TY  - CONF
AU  - Rakonjac, Simeon
AU  - Bogosavljević-Bošković, Snežana
AU  - Dosković, Vladimir
AU  - Lukić, Miloš
AU  - Škrbić, Zdenka
AU  - Petričević, Veselin
AU  - Petrović, Milun D.
PY  - 2022
UR  - http://r.istocar.bg.ac.rs/handle/123456789/811
AB  - Cilj ovog rada je bio da se utvrdi uticaj sistema gajenja (podnog i
organskog) i genotipa kokoši nosilja (Isa Brown hibrid i New Hampshire rasa) na
sadržaj holesterola u jajima. U sedam navrata tokom jednogodišnjeg proizvodnog
ciklusa (24, 32, 40, 48, 56, 64 i 72. nedelja starosti nosilja) uzeto je po 15 jaja iz sve
četiri ogledne grupe, i na zbirnim uzorcima je utvrđen sadržaj holesterola. Na
osnovu dobijenih rezultata, može se zaključiti da su jedinke iz podnog sistema
gajenja imale manji sadržaj holesterola u jajima u odnosu na organski gajene
kokoši nosilje, dok se uticaj genotipa na ovu osobinu ne može sa sigurnošću
definistati.
AB  - The aim of this study was to determine the effect of the rearing system (floor
and organic) and the genotype of laying hens (Isa Brown hybrid and New
Hampshire breed) on the cholesterol content in eggs. On seven occasions during
the one-year production cycle (24, 32, 40, 48, 56, 64 and 72 weeks hen's age), 15
eggs from all four experimental groups were taken, and cholesterol content was
determined on pooled samples. Based on the obtained results, it can be concluded
that laying hens from the floor rearing system had lower cholesterol content in
eggs compared to organic, while the effect of genotype on this trait cannot be
defined with certainty.
C3  - Zbornik radova XXVII Savetovanje o biotehnologiji sa međunarodnim učešćem, Čačak, 25-26. mart 2022.
T1  - UTICAJ SISTEMA GAJENJA I GENOTIPA KOKOŠI NOSILJA NA SADRŽAJ HOLESTEROLA U JAJIMA
T1  - EFFECT OF REARING SYSTEMS AND LAYER HENS GENOTYPES ON CHOLESTEROL CONTENT IN EGGS
SP  - 213
EP  - 218
DO  - 10.46793/SBT27.213R
ER  - 

@conference{
author = "Rakonjac, Simeon and Bogosavljević-Bošković, Snežana and Dosković, Vladimir and Lukić, Miloš and Škrbić, Zdenka and Petričević, Veselin and Petrović, Milun D.",
year = "2022",
abstract = "Cilj ovog rada je bio da se utvrdi uticaj sistema gajenja (podnog i
organskog) i genotipa kokoši nosilja (Isa Brown hibrid i New Hampshire rasa) na
sadržaj holesterola u jajima. U sedam navrata tokom jednogodišnjeg proizvodnog
ciklusa (24, 32, 40, 48, 56, 64 i 72. nedelja starosti nosilja) uzeto je po 15 jaja iz sve
četiri ogledne grupe, i na zbirnim uzorcima je utvrđen sadržaj holesterola. Na
osnovu dobijenih rezultata, može se zaključiti da su jedinke iz podnog sistema
gajenja imale manji sadržaj holesterola u jajima u odnosu na organski gajene
kokoši nosilje, dok se uticaj genotipa na ovu osobinu ne može sa sigurnošću
definistati., The aim of this study was to determine the effect of the rearing system (floor
and organic) and the genotype of laying hens (Isa Brown hybrid and New
Hampshire breed) on the cholesterol content in eggs. On seven occasions during
the one-year production cycle (24, 32, 40, 48, 56, 64 and 72 weeks hen's age), 15
eggs from all four experimental groups were taken, and cholesterol content was
determined on pooled samples. Based on the obtained results, it can be concluded
that laying hens from the floor rearing system had lower cholesterol content in
eggs compared to organic, while the effect of genotype on this trait cannot be
defined with certainty.",
journal = "Zbornik radova XXVII Savetovanje o biotehnologiji sa međunarodnim učešćem, Čačak, 25-26. mart 2022.",
title = "UTICAJ SISTEMA GAJENJA I GENOTIPA KOKOŠI NOSILJA NA SADRŽAJ HOLESTEROLA U JAJIMA, EFFECT OF REARING SYSTEMS AND LAYER HENS GENOTYPES ON CHOLESTEROL CONTENT IN EGGS",
pages = "213-218",
doi = "10.46793/SBT27.213R"
}

Rakonjac, S., Bogosavljević-Bošković, S., Dosković, V., Lukić, M., Škrbić, Z., Petričević, V.,& Petrović, M. D.. (2022). UTICAJ SISTEMA GAJENJA I GENOTIPA KOKOŠI NOSILJA NA SADRŽAJ HOLESTEROLA U JAJIMA. in Zbornik radova XXVII Savetovanje o biotehnologiji sa međunarodnim učešćem, Čačak, 25-26. mart 2022., 213-218.
https://doi.org/10.46793/SBT27.213R

Rakonjac S, Bogosavljević-Bošković S, Dosković V, Lukić M, Škrbić Z, Petričević V, Petrović MD. UTICAJ SISTEMA GAJENJA I GENOTIPA KOKOŠI NOSILJA NA SADRŽAJ HOLESTEROLA U JAJIMA. in Zbornik radova XXVII Savetovanje o biotehnologiji sa međunarodnim učešćem, Čačak, 25-26. mart 2022.. 2022;:213-218.
doi:10.46793/SBT27.213R .

Rakonjac, Simeon, Bogosavljević-Bošković, Snežana, Dosković, Vladimir, Lukić, Miloš, Škrbić, Zdenka, Petričević, Veselin, Petrović, Milun D., "UTICAJ SISTEMA GAJENJA I GENOTIPA KOKOŠI NOSILJA NA SADRŽAJ HOLESTEROLA U JAJIMA" in Zbornik radova XXVII Savetovanje o biotehnologiji sa međunarodnim učešćem, Čačak, 25-26. mart 2022. (2022):213-218,
https://doi.org/10.46793/SBT27.213R . .

TY  - JOUR
AU  - Rakonjac, Simeon
AU  - Dosković, Vladimir
AU  - Bogosavljević-Bošković, Snežana
AU  - Škrbić, Zdenka
AU  - Lukić, Miloš
AU  - Petričević, Veselin
AU  - Petrović, Milun D.
PY  - 2021
UR  - http://r.istocar.bg.ac.rs/handle/123456789/758
AB  - The aim of this study was to evaluate the effect of rearing systems
and genotypes on production performance and egg quality. Isa Brown
and New Hampshire genotypes were used in this study. These two
genotypes were housed in floor and organic rearing systems. During the
experimental period, which lasted one year (52 weeks), the following
production performance parameters were recorded: egg production,
daily egg mass, feed consumption, feed conversion efficiency, and
mortality. Fifteen eggs per group were collected for analysis at 64 weeks
of hen age. These samples were evaluated for external parameters
(egg weight and egg shape index), internal parameters (albumen
height, Haugh unit, and the proportions of albumen, yolk and shell),
eggshell quality parameters (shell thickness, shell deformation and
shell breaking strength), and eggs’ chemical composition (dry matter,
minerals, protein and lipids). Generally, Isa Brown hens had better
production performance than New Hampshire hens. At the same time,
organic New Hampshire layers performed better than floor-reared ones.
Genotype had a significant effect on all ten egg quality parameters
(external, internal and eggshell quality), rearing system independently
affected only egg weight, and the interaction of the observed factors
significantly influenced seven parameters. Genotype had a significant
effect on three of the four chemical composition parameters, while no
significant effect of the rearing system was established on the chemical
composition of eggs. The rearing system x genotype interaction
significantly affected the eggs’ protein content.
PB  - Fundação APINCO de Ciência e Tecnologia Avícolas
T2  - Brazilian Journal of Poultry Science
T1  - Production Performance and Egg Quality of Laying Hens as Influenced by Genotype and Rearing System
VL  - 23
IS  - 02
SP  - 001
EP  - 008
DO  - 10.1590/1806-9061-2019-1045
ER  - 

@article{
author = "Rakonjac, Simeon and Dosković, Vladimir and Bogosavljević-Bošković, Snežana and Škrbić, Zdenka and Lukić, Miloš and Petričević, Veselin and Petrović, Milun D.",
year = "2021",
abstract = "The aim of this study was to evaluate the effect of rearing systems
and genotypes on production performance and egg quality. Isa Brown
and New Hampshire genotypes were used in this study. These two
genotypes were housed in floor and organic rearing systems. During the
experimental period, which lasted one year (52 weeks), the following
production performance parameters were recorded: egg production,
daily egg mass, feed consumption, feed conversion efficiency, and
mortality. Fifteen eggs per group were collected for analysis at 64 weeks
of hen age. These samples were evaluated for external parameters
(egg weight and egg shape index), internal parameters (albumen
height, Haugh unit, and the proportions of albumen, yolk and shell),
eggshell quality parameters (shell thickness, shell deformation and
shell breaking strength), and eggs’ chemical composition (dry matter,
minerals, protein and lipids). Generally, Isa Brown hens had better
production performance than New Hampshire hens. At the same time,
organic New Hampshire layers performed better than floor-reared ones.
Genotype had a significant effect on all ten egg quality parameters
(external, internal and eggshell quality), rearing system independently
affected only egg weight, and the interaction of the observed factors
significantly influenced seven parameters. Genotype had a significant
effect on three of the four chemical composition parameters, while no
significant effect of the rearing system was established on the chemical
composition of eggs. The rearing system x genotype interaction
significantly affected the eggs’ protein content.",
publisher = "Fundação APINCO de Ciência e Tecnologia Avícolas",
journal = "Brazilian Journal of Poultry Science",
title = "Production Performance and Egg Quality of Laying Hens as Influenced by Genotype and Rearing System",
volume = "23",
number = "02",
pages = "001-008",
doi = "10.1590/1806-9061-2019-1045"
}

Rakonjac, S., Dosković, V., Bogosavljević-Bošković, S., Škrbić, Z., Lukić, M., Petričević, V.,& Petrović, M. D.. (2021). Production Performance and Egg Quality of Laying Hens as Influenced by Genotype and Rearing System. in Brazilian Journal of Poultry Science
Fundação APINCO de Ciência e Tecnologia Avícolas., 23(02), 001-008.
https://doi.org/10.1590/1806-9061-2019-1045

Rakonjac S, Dosković V, Bogosavljević-Bošković S, Škrbić Z, Lukić M, Petričević V, Petrović MD. Production Performance and Egg Quality of Laying Hens as Influenced by Genotype and Rearing System. in Brazilian Journal of Poultry Science. 2021;23(02):001-008.
doi:10.1590/1806-9061-2019-1045 .

Rakonjac, Simeon, Dosković, Vladimir, Bogosavljević-Bošković, Snežana, Škrbić, Zdenka, Lukić, Miloš, Petričević, Veselin, Petrović, Milun D., "Production Performance and Egg Quality of Laying Hens as Influenced by Genotype and Rearing System" in Brazilian Journal of Poultry Science, 23, no. 02 (2021):001-008,
https://doi.org/10.1590/1806-9061-2019-1045 . .

TY  - JOUR
AU  - Rakonjac, Simeon
AU  - Bogosavljević-Bošković, Snežana
AU  - Škrbić, Zdenka
AU  - Lukić, Miloš
AU  - Dosković, Vladimir
AU  - Petrović, Milun D.
AU  - Petričević, Veselin
PY  - 2019
UR  - http://r.istocar.bg.ac.rs/handle/123456789/672
AB  - The aim of this study was to compare the effect of two alternative rearing systems (floor and organic) on egg quality traits of New Hampshire laying hens in three different phases of the productive cycle (32, 48 and 72 weeks of age). Egg samples (15 eggs per group) were analysed for quality (egg weight, egg shape index, albumen height, Haugh unit, yolk colour) and chemical composition (dry matter, minerals, proteins and lipids). Egg weight, dry matter and protein content increased, while albumen height, Haugh unit and lipid content decreased with hen age (p≤0.05). Eggs from the floor rearing system had a higher shape index and lipid content compared to organic eggs (p≤0.05). Both factors and their interactions had a significant effect on yolk colour (p≤0.05).
PB  - University of Kragujevac Faculty of Agronomy in Čačak
T2  - Acta Agriculturae Serbica
T1  - Egg characteristics of New Hampshire laying hens from floor and organic rearing systems
VL  - XXIV
IS  - 48
SP  - 87
EP  - 95
DO  - 10.5937/AASer1948087R
ER  - 

@article{
author = "Rakonjac, Simeon and Bogosavljević-Bošković, Snežana and Škrbić, Zdenka and Lukić, Miloš and Dosković, Vladimir and Petrović, Milun D. and Petričević, Veselin",
year = "2019",
abstract = "The aim of this study was to compare the effect of two alternative rearing systems (floor and organic) on egg quality traits of New Hampshire laying hens in three different phases of the productive cycle (32, 48 and 72 weeks of age). Egg samples (15 eggs per group) were analysed for quality (egg weight, egg shape index, albumen height, Haugh unit, yolk colour) and chemical composition (dry matter, minerals, proteins and lipids). Egg weight, dry matter and protein content increased, while albumen height, Haugh unit and lipid content decreased with hen age (p≤0.05). Eggs from the floor rearing system had a higher shape index and lipid content compared to organic eggs (p≤0.05). Both factors and their interactions had a significant effect on yolk colour (p≤0.05).",
publisher = "University of Kragujevac Faculty of Agronomy in Čačak",
journal = "Acta Agriculturae Serbica",
title = "Egg characteristics of New Hampshire laying hens from floor and organic rearing systems",
volume = "XXIV",
number = "48",
pages = "87-95",
doi = "10.5937/AASer1948087R"
}

Rakonjac, S., Bogosavljević-Bošković, S., Škrbić, Z., Lukić, M., Dosković, V., Petrović, M. D.,& Petričević, V.. (2019). Egg characteristics of New Hampshire laying hens from floor and organic rearing systems. in Acta Agriculturae Serbica
University of Kragujevac Faculty of Agronomy in Čačak., XXIV(48), 87-95.
https://doi.org/10.5937/AASer1948087R

Rakonjac S, Bogosavljević-Bošković S, Škrbić Z, Lukić M, Dosković V, Petrović MD, Petričević V. Egg characteristics of New Hampshire laying hens from floor and organic rearing systems. in Acta Agriculturae Serbica. 2019;XXIV(48):87-95.
doi:10.5937/AASer1948087R .

Rakonjac, Simeon, Bogosavljević-Bošković, Snežana, Škrbić, Zdenka, Lukić, Miloš, Dosković, Vladimir, Petrović, Milun D., Petričević, Veselin, "Egg characteristics of New Hampshire laying hens from floor and organic rearing systems" in Acta Agriculturae Serbica, XXIV, no. 48 (2019):87-95,
https://doi.org/10.5937/AASer1948087R . .

TY  - JOUR
AU  - Rakonjac, Simeon
AU  - Bogosavljević-Bošković, Snežana
AU  - Škrbić, Zdenka
AU  - Perić, Lidija
AU  - Dosković, Vladimir
AU  - Petrović, Milun D.
AU  - Petričević, Veselin
PY  - 2017
UR  - http://r.istocar.bg.ac.rs/handle/123456789/544
AB  - The aim of this study was to evaluate the effect of rearing system, genotype and hens age on egg weight and eggs components share. The tested rearing systems were the floor and organic, and tested genotypes were Isa Brown hybrid and New Hampshire breed. Eggs were collected for analyses three times in production cycle (32 weeks hens age, 48 weeks hens age, and 72 weeks hens age). In these samples (fifteen eggs per group, eggs were one day old) were investigated: egg weight, albumen share, yolk share and shell share. Egg weight was increased with hens age. Also, the interaction between the genotype and hens age was found, so the New Hampshire eggs in 32 weeks had less weight then Isa Brown eggs (p≤0.05), while in the 48 and 72 weeks this difference was lost (p≥0.05). The share of egg albumen and yolk was significantly affected by the rearing system, genotype and hens age (p≤0.05). Floor produced eggs had a lower proportion of albumen and a higher proportion of yolk compared to organic eggs. New Hampshire eggs had a higher content of yolk and the smaller content of albumen compared to Isa Brown eggs (p≤0.05). With hens age, the share of yolk was increased and albumen share was decreased. Interaction of all three studied factors - rearing system x genotype x hens age had the most important effect on the shell share.
AB  - Cilj ovog rada je bio da ispita uticaj sistema gajenja, genotipa i starosti kokoši nosilja na masu i udeo glavnih delova jaja. Ispitivani sistemi gajenja su bili podni i organski, a ispitivani genotipovi Isa Brown hibrid i New Hampshire rasa. Jaja su sakupljana za analizu tri puta za vreme proizvodnog ciklusa (kod 32-nedeljnih nosilja, 48-nedeljnih i 72-nedeljnih). Na ovim uzorcima (15 jaja po grupi, jaja stara jedan dan) su ispitivani: masa jaja, udeo belanca, udeo žumanca i udeo ljuske jaja. Masa jaja se povećavala sa starenjem nosilja. Takođe, interakcija genotip x starost nosilja je bila značajna, pa su New hampshire kokoši u 32. nedelji nosile jaja manje mase od Isa Brown hibrida (p≤0.05), dok tih razlika u 48. i 72. nedelji nije bilo (p≥0.05). Udeo belanca i žumanca je bio od značajnim uticajem sistema gajenja, genotipa i starosti nosilja (p≤0.05). Podno gajenje kokoši su nosile jaja koja su imala manji udeo belanca a veći udeo žumanca u poređenju sa organskim kokošima (p≥0.05). Jaja New Hampshire rase su imala manji udeo belanca a veći udeo žumanca u poređenju sa Isa Brown genotipom (p≥0.05). Sa starenjem kokoši, udeo žumanca se povećavao a udeo belanca smanjivao. Interakcija sva tri ispitivana faktora - sistema gajenja, genotipa i starosti nosilja je imala najznačajniji uticaj na udeo ljuske jaja.
PB  - Agronomski fakultet, Čačak
T2  - Acta agriculturae Serbica
T1  - The effect of the rearing system, genotype and laying hens age on the egg weight and share of main parts of eggs
T1  - Uticaj sistema gajenja, genotipa i starosti kokoši nosilja na masu jaja i udeo glavnih delova jaja
VL  - 22
IS  - 44
SP  - 185
EP  - 192
DO  - 10.5937/AASer1744185R
ER  - 

@article{
author = "Rakonjac, Simeon and Bogosavljević-Bošković, Snežana and Škrbić, Zdenka and Perić, Lidija and Dosković, Vladimir and Petrović, Milun D. and Petričević, Veselin",
year = "2017",
abstract = "The aim of this study was to evaluate the effect of rearing system, genotype and hens age on egg weight and eggs components share. The tested rearing systems were the floor and organic, and tested genotypes were Isa Brown hybrid and New Hampshire breed. Eggs were collected for analyses three times in production cycle (32 weeks hens age, 48 weeks hens age, and 72 weeks hens age). In these samples (fifteen eggs per group, eggs were one day old) were investigated: egg weight, albumen share, yolk share and shell share. Egg weight was increased with hens age. Also, the interaction between the genotype and hens age was found, so the New Hampshire eggs in 32 weeks had less weight then Isa Brown eggs (p≤0.05), while in the 48 and 72 weeks this difference was lost (p≥0.05). The share of egg albumen and yolk was significantly affected by the rearing system, genotype and hens age (p≤0.05). Floor produced eggs had a lower proportion of albumen and a higher proportion of yolk compared to organic eggs. New Hampshire eggs had a higher content of yolk and the smaller content of albumen compared to Isa Brown eggs (p≤0.05). With hens age, the share of yolk was increased and albumen share was decreased. Interaction of all three studied factors - rearing system x genotype x hens age had the most important effect on the shell share., Cilj ovog rada je bio da ispita uticaj sistema gajenja, genotipa i starosti kokoši nosilja na masu i udeo glavnih delova jaja. Ispitivani sistemi gajenja su bili podni i organski, a ispitivani genotipovi Isa Brown hibrid i New Hampshire rasa. Jaja su sakupljana za analizu tri puta za vreme proizvodnog ciklusa (kod 32-nedeljnih nosilja, 48-nedeljnih i 72-nedeljnih). Na ovim uzorcima (15 jaja po grupi, jaja stara jedan dan) su ispitivani: masa jaja, udeo belanca, udeo žumanca i udeo ljuske jaja. Masa jaja se povećavala sa starenjem nosilja. Takođe, interakcija genotip x starost nosilja je bila značajna, pa su New hampshire kokoši u 32. nedelji nosile jaja manje mase od Isa Brown hibrida (p≤0.05), dok tih razlika u 48. i 72. nedelji nije bilo (p≥0.05). Udeo belanca i žumanca je bio od značajnim uticajem sistema gajenja, genotipa i starosti nosilja (p≤0.05). Podno gajenje kokoši su nosile jaja koja su imala manji udeo belanca a veći udeo žumanca u poređenju sa organskim kokošima (p≥0.05). Jaja New Hampshire rase su imala manji udeo belanca a veći udeo žumanca u poređenju sa Isa Brown genotipom (p≥0.05). Sa starenjem kokoši, udeo žumanca se povećavao a udeo belanca smanjivao. Interakcija sva tri ispitivana faktora - sistema gajenja, genotipa i starosti nosilja je imala najznačajniji uticaj na udeo ljuske jaja.",
publisher = "Agronomski fakultet, Čačak",
journal = "Acta agriculturae Serbica",
title = "The effect of the rearing system, genotype and laying hens age on the egg weight and share of main parts of eggs, Uticaj sistema gajenja, genotipa i starosti kokoši nosilja na masu jaja i udeo glavnih delova jaja",
volume = "22",
number = "44",
pages = "185-192",
doi = "10.5937/AASer1744185R"
}

Rakonjac, S., Bogosavljević-Bošković, S., Škrbić, Z., Perić, L., Dosković, V., Petrović, M. D.,& Petričević, V.. (2017). The effect of the rearing system, genotype and laying hens age on the egg weight and share of main parts of eggs. in Acta agriculturae Serbica
Agronomski fakultet, Čačak., 22(44), 185-192.
https://doi.org/10.5937/AASer1744185R

Rakonjac S, Bogosavljević-Bošković S, Škrbić Z, Perić L, Dosković V, Petrović MD, Petričević V. The effect of the rearing system, genotype and laying hens age on the egg weight and share of main parts of eggs. in Acta agriculturae Serbica. 2017;22(44):185-192.
doi:10.5937/AASer1744185R .

Rakonjac, Simeon, Bogosavljević-Bošković, Snežana, Škrbić, Zdenka, Perić, Lidija, Dosković, Vladimir, Petrović, Milun D., Petričević, Veselin, "The effect of the rearing system, genotype and laying hens age on the egg weight and share of main parts of eggs" in Acta agriculturae Serbica, 22, no. 44 (2017):185-192,
https://doi.org/10.5937/AASer1744185R . .

TY  - JOUR
AU  - Rakonjac, Simeon
AU  - Bogosavljević-Bošković, Snežana
AU  - Škrbić, Zdenka
AU  - Perić, Lidija
AU  - Dosković, Vladimir
AU  - Petričević, Veselin
AU  - Petrović, Milun D.
PY  - 2016
UR  - http://r.istocar.bg.ac.rs/handle/123456789/491
AB  - The aim of this paper was to estimate the effect of rearing systems (floor and organic) on the chemical composition of meat of laying hens. The tested genotypes were Isa Brown hybrid and dual purpose breed New Hampshire. Based on the results of this research can be concluded that the rearing system, generally, did not caused statistically significant differences in any of the parameters examined chemical composition of meat. On the other hand, the breast meat - white meat and thigh and drumstick - dark meat of New Hampshire genotype had significantly higher fat content compared to the Isa Brown hybrid. It must be noted that in the breast meat reported significant interaction genotype x rearing system. The other parameters of the chemical composition of meat were not significantly different between reared genotypes.
AB  - Cilj ovog rada je bio da se ispita uticaj sistema gajenja na hemijski sastav mesa kokoši nosilja iz alternativnih sistema gajenja: podnog i organskog. Ispitivani genotipovi su bili linijski hibrid Isa Brown i rasa kombinovanih proizvodnih sposobnosti New Hampshire. Na osnovu rezultata ovih istraživanja može se zaključiti da sistem gajenja, generalno posmatrano, nije uzrokovao značajne razlike ni u jednom od ispitivanih parametara hemijskog sastava mesa. Sa druge strane, i meso grudi - belo meso i meso bataka i karabataka - tamno meso, New Hampshire genotipa je imalo značajno veći sadržaj masti u odnosu na Isa Brown hibrid, s tim što se mora napomenuti da se kod mesa grudi, javila i značajna interakcija sistem gajenja x genotip. Ostali ispitivani parametri hemijskog sastava mesa nisu se značajno razlikovali između ispitivanih genotipova.
PB  - Institute for Animal Husbandry, Belgrade
T2  - Biotechnology in Animal Husbandry
T1  - Chemical composition of meat of laying hens in alternative rearing systems
T1  - Hemijski sastav mesa kokoši nosilja iz alternativnih sistema gajenja
VL  - 32
IS  - 4
SP  - 361
EP  - 368
DO  - 10.2298/bah1604361R
ER  - 

@article{
author = "Rakonjac, Simeon and Bogosavljević-Bošković, Snežana and Škrbić, Zdenka and Perić, Lidija and Dosković, Vladimir and Petričević, Veselin and Petrović, Milun D.",
year = "2016",
abstract = "The aim of this paper was to estimate the effect of rearing systems (floor and organic) on the chemical composition of meat of laying hens. The tested genotypes were Isa Brown hybrid and dual purpose breed New Hampshire. Based on the results of this research can be concluded that the rearing system, generally, did not caused statistically significant differences in any of the parameters examined chemical composition of meat. On the other hand, the breast meat - white meat and thigh and drumstick - dark meat of New Hampshire genotype had significantly higher fat content compared to the Isa Brown hybrid. It must be noted that in the breast meat reported significant interaction genotype x rearing system. The other parameters of the chemical composition of meat were not significantly different between reared genotypes., Cilj ovog rada je bio da se ispita uticaj sistema gajenja na hemijski sastav mesa kokoši nosilja iz alternativnih sistema gajenja: podnog i organskog. Ispitivani genotipovi su bili linijski hibrid Isa Brown i rasa kombinovanih proizvodnih sposobnosti New Hampshire. Na osnovu rezultata ovih istraživanja može se zaključiti da sistem gajenja, generalno posmatrano, nije uzrokovao značajne razlike ni u jednom od ispitivanih parametara hemijskog sastava mesa. Sa druge strane, i meso grudi - belo meso i meso bataka i karabataka - tamno meso, New Hampshire genotipa je imalo značajno veći sadržaj masti u odnosu na Isa Brown hibrid, s tim što se mora napomenuti da se kod mesa grudi, javila i značajna interakcija sistem gajenja x genotip. Ostali ispitivani parametri hemijskog sastava mesa nisu se značajno razlikovali između ispitivanih genotipova.",
publisher = "Institute for Animal Husbandry, Belgrade",
journal = "Biotechnology in Animal Husbandry",
title = "Chemical composition of meat of laying hens in alternative rearing systems, Hemijski sastav mesa kokoši nosilja iz alternativnih sistema gajenja",
volume = "32",
number = "4",
pages = "361-368",
doi = "10.2298/bah1604361R"
}

Rakonjac, S., Bogosavljević-Bošković, S., Škrbić, Z., Perić, L., Dosković, V., Petričević, V.,& Petrović, M. D.. (2016). Chemical composition of meat of laying hens in alternative rearing systems. in Biotechnology in Animal Husbandry
Institute for Animal Husbandry, Belgrade., 32(4), 361-368.
https://doi.org/10.2298/bah1604361R

Rakonjac S, Bogosavljević-Bošković S, Škrbić Z, Perić L, Dosković V, Petričević V, Petrović MD. Chemical composition of meat of laying hens in alternative rearing systems. in Biotechnology in Animal Husbandry. 2016;32(4):361-368.
doi:10.2298/bah1604361R .

Rakonjac, Simeon, Bogosavljević-Bošković, Snežana, Škrbić, Zdenka, Perić, Lidija, Dosković, Vladimir, Petričević, Veselin, Petrović, Milun D., "Chemical composition of meat of laying hens in alternative rearing systems" in Biotechnology in Animal Husbandry, 32, no. 4 (2016):361-368,
https://doi.org/10.2298/bah1604361R . .

TY  - JOUR
AU  - Petrović, Milun D.
AU  - Bogdanović, Vladan
AU  - Petrović, Milan M.
AU  - Bogosavljević-Bošković, Snežana
AU  - Đoković, Radojica
AU  - Đedović, Radica
AU  - Rakonjac, Simeon
PY  - 2015
UR  - http://r.istocar.bg.ac.rs/handle/123456789/452
AB  - The effect of systematic and continuous environmental factors on milk performance traits over standard lactations in 2805 Simmental cows was evaluated using the general linear model. The systematic factors included the effect of farm or breeding area, calving season, year of birth, season of birth, lactation group and their interactions. The continuous factor analysed was the effect of age at first conception. The effect of farm, lactation group and calving season on standard lactation milk performance was found to be highly significant (P (lt) 0.01), excepting the effect of calving season on milk fat percent in standard lactations which showed statistical significance (P (lt) 0.05). The interactions between year and season of birth, farm and calving season, and farm and lactation group had a highly significant effect (P (lt) 0.01) on all performance traits studied. Age at first conception, as a continuous factor, had a highly significant effect (P (lt) 0.01) on milk yield and milk fat percent, and a non-significant effect on milk fat yield. The model used to correct the performance traits over standard lactations for the effect of systematic factors was highly significant (P (lt) 0.01). The variance of the model accounted for 20.06 and 37.31% of the total variance of milk fat yield and milk fat percent, respectively. The resulting coefficients of determination (R-2) ranged from 0.20 for milk fat yield to 0.37 for milk fat percent.
PB  - De Gruyter Open Ltd, Warsaw
T2  - Annals of Animal Science
T1  - Effect of non-genetic factors on standard lactation milk performance traits in simmental cows
VL  - 15
IS  - 1
SP  - 211
EP  - 220
DO  - 10.2478/aoas-2014-0073
ER  - 

@article{
author = "Petrović, Milun D. and Bogdanović, Vladan and Petrović, Milan M. and Bogosavljević-Bošković, Snežana and Đoković, Radojica and Đedović, Radica and Rakonjac, Simeon",
year = "2015",
abstract = "The effect of systematic and continuous environmental factors on milk performance traits over standard lactations in 2805 Simmental cows was evaluated using the general linear model. The systematic factors included the effect of farm or breeding area, calving season, year of birth, season of birth, lactation group and their interactions. The continuous factor analysed was the effect of age at first conception. The effect of farm, lactation group and calving season on standard lactation milk performance was found to be highly significant (P (lt) 0.01), excepting the effect of calving season on milk fat percent in standard lactations which showed statistical significance (P (lt) 0.05). The interactions between year and season of birth, farm and calving season, and farm and lactation group had a highly significant effect (P (lt) 0.01) on all performance traits studied. Age at first conception, as a continuous factor, had a highly significant effect (P (lt) 0.01) on milk yield and milk fat percent, and a non-significant effect on milk fat yield. The model used to correct the performance traits over standard lactations for the effect of systematic factors was highly significant (P (lt) 0.01). The variance of the model accounted for 20.06 and 37.31% of the total variance of milk fat yield and milk fat percent, respectively. The resulting coefficients of determination (R-2) ranged from 0.20 for milk fat yield to 0.37 for milk fat percent.",
publisher = "De Gruyter Open Ltd, Warsaw",
journal = "Annals of Animal Science",
title = "Effect of non-genetic factors on standard lactation milk performance traits in simmental cows",
volume = "15",
number = "1",
pages = "211-220",
doi = "10.2478/aoas-2014-0073"
}

Petrović, M. D., Bogdanović, V., Petrović, M. M., Bogosavljević-Bošković, S., Đoković, R., Đedović, R.,& Rakonjac, S.. (2015). Effect of non-genetic factors on standard lactation milk performance traits in simmental cows. in Annals of Animal Science
De Gruyter Open Ltd, Warsaw., 15(1), 211-220.
https://doi.org/10.2478/aoas-2014-0073

Petrović MD, Bogdanović V, Petrović MM, Bogosavljević-Bošković S, Đoković R, Đedović R, Rakonjac S. Effect of non-genetic factors on standard lactation milk performance traits in simmental cows. in Annals of Animal Science. 2015;15(1):211-220.
doi:10.2478/aoas-2014-0073 .

Petrović, Milun D., Bogdanović, Vladan, Petrović, Milan M., Bogosavljević-Bošković, Snežana, Đoković, Radojica, Đedović, Radica, Rakonjac, Simeon, "Effect of non-genetic factors on standard lactation milk performance traits in simmental cows" in Annals of Animal Science, 15, no. 1 (2015):211-220,
https://doi.org/10.2478/aoas-2014-0073 . .

TY  - JOUR
AU  - Rakonjac, Simeon
AU  - Bogosavljević-Bošković, Snežana
AU  - Pavlovski, Zlatica
AU  - Škrbić, Zdenka
AU  - Dosković, Vladimir
AU  - Petrović, Milun D.
AU  - Petričević, Veselin
PY  - 2014
UR  - http://r.istocar.bg.ac.rs/handle/123456789/424
AB  - Alternative laying hen rearing systems have been rapidly introduced into poultry production in an effort to harmonise poultry health and welfare with consumer, producer, industry and environmental demands. They are an integral part of modern egg production. Husbandry systems for keeping laying hens have an impact on, inter alia, the chemical composition of eggs. The subject matter of this study is a comparative review of the results obtained by different authors on the effect of rearing system on chemical composition ( proteins, lipids, cholesterol, vitamins and fatty acids content) and hygienic conditions of eggs from different rearing systems of laying hens. Eggs from these laying hen rearing systems have been proven by a large body of literature data to have better nutritional properties. Moreover, the results analysed also indicate differences within rearing systems. Rearing systems also have an influence on hygienic and microbiological quality of eggs. In view of the above, this comparable overview of the literature on the use of different rearing systems in table egg production can serve as a tool in determining the future direction of research as well as an indicator of its practical application.
PB  - Cambridge Univ Press, Cambridge
T2  - Worlds Poultry Science Journal
T1  - Laying hen rearing systems: a review of chemical composition and hygienic conditions of eggs
VL  - 70
IS  - 1
SP  - 151
EP  - 163
DO  - 10.1017/S0043933914000130
ER  - 

@article{
author = "Rakonjac, Simeon and Bogosavljević-Bošković, Snežana and Pavlovski, Zlatica and Škrbić, Zdenka and Dosković, Vladimir and Petrović, Milun D. and Petričević, Veselin",
year = "2014",
abstract = "Alternative laying hen rearing systems have been rapidly introduced into poultry production in an effort to harmonise poultry health and welfare with consumer, producer, industry and environmental demands. They are an integral part of modern egg production. Husbandry systems for keeping laying hens have an impact on, inter alia, the chemical composition of eggs. The subject matter of this study is a comparative review of the results obtained by different authors on the effect of rearing system on chemical composition ( proteins, lipids, cholesterol, vitamins and fatty acids content) and hygienic conditions of eggs from different rearing systems of laying hens. Eggs from these laying hen rearing systems have been proven by a large body of literature data to have better nutritional properties. Moreover, the results analysed also indicate differences within rearing systems. Rearing systems also have an influence on hygienic and microbiological quality of eggs. In view of the above, this comparable overview of the literature on the use of different rearing systems in table egg production can serve as a tool in determining the future direction of research as well as an indicator of its practical application.",
publisher = "Cambridge Univ Press, Cambridge",
journal = "Worlds Poultry Science Journal",
title = "Laying hen rearing systems: a review of chemical composition and hygienic conditions of eggs",
volume = "70",
number = "1",
pages = "151-163",
doi = "10.1017/S0043933914000130"
}

Rakonjac, S., Bogosavljević-Bošković, S., Pavlovski, Z., Škrbić, Z., Dosković, V., Petrović, M. D.,& Petričević, V.. (2014). Laying hen rearing systems: a review of chemical composition and hygienic conditions of eggs. in Worlds Poultry Science Journal
Cambridge Univ Press, Cambridge., 70(1), 151-163.
https://doi.org/10.1017/S0043933914000130

Rakonjac S, Bogosavljević-Bošković S, Pavlovski Z, Škrbić Z, Dosković V, Petrović MD, Petričević V. Laying hen rearing systems: a review of chemical composition and hygienic conditions of eggs. in Worlds Poultry Science Journal. 2014;70(1):151-163.
doi:10.1017/S0043933914000130 .

Rakonjac, Simeon, Bogosavljević-Bošković, Snežana, Pavlovski, Zlatica, Škrbić, Zdenka, Dosković, Vladimir, Petrović, Milun D., Petričević, Veselin, "Laying hen rearing systems: a review of chemical composition and hygienic conditions of eggs" in Worlds Poultry Science Journal, 70, no. 1 (2014):151-163,
https://doi.org/10.1017/S0043933914000130 . .

TY  - JOUR
AU  - Rakonjac, Simeon
AU  - Bogosavljević-Bošković, Snežana
AU  - Pavlovski, Zlatica
AU  - Škrbić, Zdenka
AU  - Dosković, Vladimir
AU  - Petrović, Milun D.
AU  - Petričević, Veselin
PY  - 2014
UR  - http://r.istocar.bg.ac.rs/handle/123456789/423
AB  - Laying hen rearing systems have been the focus of scientific research for many years. Over the last few decades, new laying hen rearing systems have been rapidly introduced in an effort to harmonise poultry health and welfare with consumer, producer, industry and environmental demands. Given the above situation, the subject matter of this paper was a comparative review of the results obtained by different authors on the effect of rearing system on productive traits (egg production and mortality) and egg quality characteristics (egg weight, proportions of main egg parts, Haugh units, yolk colour and carotenoids) in laying hens. Although productive performance in alternative systems is often lower compared to conventional, intensive layers, eggs from alternative systems have been proven in numerous studies to have better nutritional properties. Moreover, research results indicate differences within rearing systems. In view of this, this overview of the literature on the use of different rearing systems in table egg production can serve as a tool in determining the future direction of research as well as an indicator of its practical application.
PB  - Cambridge Univ Press, Cambridge
T2  - Worlds Poultry Science Journal
T1  - Laying hen rearing systems: a review of major production results and egg quality traits
VL  - 70
IS  - 1
SP  - 93
EP  - 104
DO  - 10.1017/S0043933914000087
ER  - 

@article{
author = "Rakonjac, Simeon and Bogosavljević-Bošković, Snežana and Pavlovski, Zlatica and Škrbić, Zdenka and Dosković, Vladimir and Petrović, Milun D. and Petričević, Veselin",
year = "2014",
abstract = "Laying hen rearing systems have been the focus of scientific research for many years. Over the last few decades, new laying hen rearing systems have been rapidly introduced in an effort to harmonise poultry health and welfare with consumer, producer, industry and environmental demands. Given the above situation, the subject matter of this paper was a comparative review of the results obtained by different authors on the effect of rearing system on productive traits (egg production and mortality) and egg quality characteristics (egg weight, proportions of main egg parts, Haugh units, yolk colour and carotenoids) in laying hens. Although productive performance in alternative systems is often lower compared to conventional, intensive layers, eggs from alternative systems have been proven in numerous studies to have better nutritional properties. Moreover, research results indicate differences within rearing systems. In view of this, this overview of the literature on the use of different rearing systems in table egg production can serve as a tool in determining the future direction of research as well as an indicator of its practical application.",
publisher = "Cambridge Univ Press, Cambridge",
journal = "Worlds Poultry Science Journal",
title = "Laying hen rearing systems: a review of major production results and egg quality traits",
volume = "70",
number = "1",
pages = "93-104",
doi = "10.1017/S0043933914000087"
}

Rakonjac, S., Bogosavljević-Bošković, S., Pavlovski, Z., Škrbić, Z., Dosković, V., Petrović, M. D.,& Petričević, V.. (2014). Laying hen rearing systems: a review of major production results and egg quality traits. in Worlds Poultry Science Journal
Cambridge Univ Press, Cambridge., 70(1), 93-104.
https://doi.org/10.1017/S0043933914000087

Rakonjac S, Bogosavljević-Bošković S, Pavlovski Z, Škrbić Z, Dosković V, Petrović MD, Petričević V. Laying hen rearing systems: a review of major production results and egg quality traits. in Worlds Poultry Science Journal. 2014;70(1):93-104.
doi:10.1017/S0043933914000087 .

Rakonjac, Simeon, Bogosavljević-Bošković, Snežana, Pavlovski, Zlatica, Škrbić, Zdenka, Dosković, Vladimir, Petrović, Milun D., Petričević, Veselin, "Laying hen rearing systems: a review of major production results and egg quality traits" in Worlds Poultry Science Journal, 70, no. 1 (2014):93-104,
https://doi.org/10.1017/S0043933914000087 . .

TY  - CONF
AU  - Nikšić, Dragan
AU  - Petrović, Milan M.
AU  - Pantelić, Vlada
AU  - Ostojić Andrić, Dušica
AU  - Caro Petrović, Violeta
AU  - Perišić, Predrag
AU  - Petrović, Milun D.
PY  - 2013
UR  - http://r.istocar.bg.ac.rs/handle/123456789/685
AB  - The work is the presentation of performance data and phenotypes of milk traits of Simmental cows in Serbia. The analysis of quantitative phenotypic parameters was carried out in four breeding areas and on dozen of large and small farms housing and rearing 1370 cows – first calving heifers. The obtained data were analysed using the method of Least Squares and analysis results were obtained by applying mathematical-statistical data analysis using mixed models. Mathematical - statistical analysis of data was performed using linear methods with fixed effects, using the method of Least Squares (LS method).
Based on these results, it was established that the breeding area, statistically analysed, caused highly significant deviations (P <0.01) of production traits from the general population average. Calving season has influenced significantly (P<0.05), and the interaction of area and calving season has produced a highly significant variation in milk yield, milk fat and protein (P <0.01).
PB  - Institute for Animal Husbandry, Belgrade-Zemun
C3  - Proceedings of the 10th International Symposium Modern Trends in Livestock Production, Belgrade, Serbia, October 2-4, 2013
T1  - VARIABILITY OF MILK TRAITS IN THE POPULATION OF SIMMENTAL CATTLE IN SERBIA
SP  - 536
EP  - 542
UR  - https://hdl.handle.net/21.15107/rcub_ristocar_685
ER  - 

@conference{
author = "Nikšić, Dragan and Petrović, Milan M. and Pantelić, Vlada and Ostojić Andrić, Dušica and Caro Petrović, Violeta and Perišić, Predrag and Petrović, Milun D.",
year = "2013",
abstract = "The work is the presentation of performance data and phenotypes of milk traits of Simmental cows in Serbia. The analysis of quantitative phenotypic parameters was carried out in four breeding areas and on dozen of large and small farms housing and rearing 1370 cows – first calving heifers. The obtained data were analysed using the method of Least Squares and analysis results were obtained by applying mathematical-statistical data analysis using mixed models. Mathematical - statistical analysis of data was performed using linear methods with fixed effects, using the method of Least Squares (LS method).
Based on these results, it was established that the breeding area, statistically analysed, caused highly significant deviations (P <0.01) of production traits from the general population average. Calving season has influenced significantly (P<0.05), and the interaction of area and calving season has produced a highly significant variation in milk yield, milk fat and protein (P <0.01).",
publisher = "Institute for Animal Husbandry, Belgrade-Zemun",
journal = "Proceedings of the 10th International Symposium Modern Trends in Livestock Production, Belgrade, Serbia, October 2-4, 2013",
title = "VARIABILITY OF MILK TRAITS IN THE POPULATION OF SIMMENTAL CATTLE IN SERBIA",
pages = "536-542",
url = "https://hdl.handle.net/21.15107/rcub_ristocar_685"
}

Nikšić, D., Petrović, M. M., Pantelić, V., Ostojić Andrić, D., Caro Petrović, V., Perišić, P.,& Petrović, M. D.. (2013). VARIABILITY OF MILK TRAITS IN THE POPULATION OF SIMMENTAL CATTLE IN SERBIA. in Proceedings of the 10th International Symposium Modern Trends in Livestock Production, Belgrade, Serbia, October 2-4, 2013
Institute for Animal Husbandry, Belgrade-Zemun., 536-542.
https://hdl.handle.net/21.15107/rcub_ristocar_685

Nikšić D, Petrović MM, Pantelić V, Ostojić Andrić D, Caro Petrović V, Perišić P, Petrović MD. VARIABILITY OF MILK TRAITS IN THE POPULATION OF SIMMENTAL CATTLE IN SERBIA. in Proceedings of the 10th International Symposium Modern Trends in Livestock Production, Belgrade, Serbia, October 2-4, 2013. 2013;:536-542.
https://hdl.handle.net/21.15107/rcub_ristocar_685 .

Nikšić, Dragan, Petrović, Milan M., Pantelić, Vlada, Ostojić Andrić, Dušica, Caro Petrović, Violeta, Perišić, Predrag, Petrović, Milun D., "VARIABILITY OF MILK TRAITS IN THE POPULATION OF SIMMENTAL CATTLE IN SERBIA" in Proceedings of the 10th International Symposium Modern Trends in Livestock Production, Belgrade, Serbia, October 2-4, 2013 (2013):536-542,
https://hdl.handle.net/21.15107/rcub_ristocar_685 .

TY  - CONF
AU  - Lazarević, Marina
AU  - Petrović, Milan M.
AU  - Pantelić, Vlada
AU  - Ružić-Muslić, Dragana
AU  - Bogdanović, Vladan
AU  - Đedović, Radica
AU  - Petrović, Milun D.
PY  - 2013
UR  - http://r.istocar.bg.ac.rs/handle/123456789/687
AB  - The work includes the review of production results, i.e. milk performance phenotypes of Black and White Holstein cows in Central Serbia. The analysis of quantitative phenotypic parameters was carried out in five regions (breeding regions) on several large and small farms which housed 1090 cows - first calving heifers. 
Using the method of Least Squares - the fixed model, highly significant deviation of milk yield, milk fat from the average (P < 0.01) was established. Cows reared in the region 4 in the first lactation produced 503 kg less milk compared to the general average and 852 kg less milk than those reared in the region 3. Birth year caused statistically significant differences in milk yield and milk fat yield (P < 0.05), except % of milk protein where no significant variations (P> 0.05) were determined. Season in which the cows had calved caused a highly significant deviation of milk yield (P < 0.01) and significant deviations of yields of milk fat and protein (P < 0,05).
PB  - Institute for Animal Husbandry, Belgrade-Zemun
C3  - Proceedings of the 10th International Symposium Modern Trends in Livestock Production, Belgrade, Serbia, October 2-4, 2013
T1  - STUDY OF THE VARIABILITY OF MILK TRAITS IN THE POPULATION OF HOLSTEIN FRIESIAN CATTLE IN CENTRAL SERBIA
SP  - 543
EP  - 549
UR  - https://hdl.handle.net/21.15107/rcub_ristocar_687
ER  - 

@conference{
author = "Lazarević, Marina and Petrović, Milan M. and Pantelić, Vlada and Ružić-Muslić, Dragana and Bogdanović, Vladan and Đedović, Radica and Petrović, Milun D.",
year = "2013",
abstract = "The work includes the review of production results, i.e. milk performance phenotypes of Black and White Holstein cows in Central Serbia. The analysis of quantitative phenotypic parameters was carried out in five regions (breeding regions) on several large and small farms which housed 1090 cows - first calving heifers. 
Using the method of Least Squares - the fixed model, highly significant deviation of milk yield, milk fat from the average (P < 0.01) was established. Cows reared in the region 4 in the first lactation produced 503 kg less milk compared to the general average and 852 kg less milk than those reared in the region 3. Birth year caused statistically significant differences in milk yield and milk fat yield (P < 0.05), except % of milk protein where no significant variations (P> 0.05) were determined. Season in which the cows had calved caused a highly significant deviation of milk yield (P < 0.01) and significant deviations of yields of milk fat and protein (P < 0,05).",
publisher = "Institute for Animal Husbandry, Belgrade-Zemun",
journal = "Proceedings of the 10th International Symposium Modern Trends in Livestock Production, Belgrade, Serbia, October 2-4, 2013",
title = "STUDY OF THE VARIABILITY OF MILK TRAITS IN THE POPULATION OF HOLSTEIN FRIESIAN CATTLE IN CENTRAL SERBIA",
pages = "543-549",
url = "https://hdl.handle.net/21.15107/rcub_ristocar_687"
}

Lazarević, M., Petrović, M. M., Pantelić, V., Ružić-Muslić, D., Bogdanović, V., Đedović, R.,& Petrović, M. D.. (2013). STUDY OF THE VARIABILITY OF MILK TRAITS IN THE POPULATION OF HOLSTEIN FRIESIAN CATTLE IN CENTRAL SERBIA. in Proceedings of the 10th International Symposium Modern Trends in Livestock Production, Belgrade, Serbia, October 2-4, 2013
Institute for Animal Husbandry, Belgrade-Zemun., 543-549.
https://hdl.handle.net/21.15107/rcub_ristocar_687

Lazarević M, Petrović MM, Pantelić V, Ružić-Muslić D, Bogdanović V, Đedović R, Petrović MD. STUDY OF THE VARIABILITY OF MILK TRAITS IN THE POPULATION OF HOLSTEIN FRIESIAN CATTLE IN CENTRAL SERBIA. in Proceedings of the 10th International Symposium Modern Trends in Livestock Production, Belgrade, Serbia, October 2-4, 2013. 2013;:543-549.
https://hdl.handle.net/21.15107/rcub_ristocar_687 .

Lazarević, Marina, Petrović, Milan M., Pantelić, Vlada, Ružić-Muslić, Dragana, Bogdanović, Vladan, Đedović, Radica, Petrović, Milun D., "STUDY OF THE VARIABILITY OF MILK TRAITS IN THE POPULATION OF HOLSTEIN FRIESIAN CATTLE IN CENTRAL SERBIA" in Proceedings of the 10th International Symposium Modern Trends in Livestock Production, Belgrade, Serbia, October 2-4, 2013 (2013):543-549,
https://hdl.handle.net/21.15107/rcub_ristocar_687 .

TY  - JOUR
AU  - Đoković, Radojica
AU  - Kurcubic, Vladimir S.
AU  - Ilić, Zoran Z.
AU  - Cincović, Marko
AU  - Fratrić, Natalija
AU  - Stanimirović, Zoran
AU  - Petrović, Milun D.
AU  - Petrović, Milan P.
PY  - 2013
UR  - http://r.istocar.bg.ac.rs/handle/123456789/373
AB  - Fifteen early-lactation cows and 15 mid-lactation cows were chosen for the analysis. Blood samples were collected to measure the beta-hydroxybutyrate (BHB), non-esterified fatty acids (NEFA), triglycerides (TG), glucose (Glu), total protein (TP), albumin (ALB), total bilirubin (TB), urea (U) and the activity of aspartate transaminase (AST) and gamma-glutamyl transferase (GGT). Earlyl-actation cows showed significantly higher (P (lt) 0.05) values of serum BHB and NEFA, and lower of (P (lt) 0.05) glycemia levels compared to mid-lactation cows. High lipomobilization (NEFA >0.4 mmol/l) and subclinical ketosis (BHB >1.2 mmol/L) were detected in 6 (40%) and 14 (94.4%) early-lactation cows, respectively, and in none of the mid lactation cows. AST activities above 100 IU/1 were detected in two early-lactation and none of the mid-lactation cows. TG concentrations below 0.12 mmol/l were found in 7 (44%) early-lactation and 2 (13.3%) mid-lactation cows. Glucose levels were below 2.5 mmol/l in 10 (66.6%) early-lactation and 5 (33.3%) mid-lactation cows. Early-lactation cows showed lower blood serum concentrations of TG (P>0.05), ALB (P>0.05), TP (P (lt) 0.05), U (P>0.05) and GTT (P>0.05) activities and higher concentrations of TB (P>0.05) and AST activities (P (lt) 0.05), as compared to mid-lactation cows. These metabolic characteristics were correlated with DMI and energy balance (EB). Blood serum values for glucose, TG, BHB, NEFA and AST showed that early-lactation cows suffered from metabolic disturbances, associated with ketosis, and some degree of hepatic lesions, probably due to fat infiltration. These serum parameters may have a key role in evaluating the metabolic status of dairy cows.
PB  - Polska Akad Nauk, Inst Genetyki I Hodowli Zwierzat, Mrokow
T2  - Animal Science Papers and Reports
T1  - Evaluation of the metabolic status of Simmental dairy cows in early and mid lactation
VL  - 31
IS  - 2
SP  - 101
EP  - 110
UR  - https://hdl.handle.net/21.15107/rcub_veterinar_1022
ER  - 

@article{
author = "Đoković, Radojica and Kurcubic, Vladimir S. and Ilić, Zoran Z. and Cincović, Marko and Fratrić, Natalija and Stanimirović, Zoran and Petrović, Milun D. and Petrović, Milan P.",
year = "2013",
abstract = "Fifteen early-lactation cows and 15 mid-lactation cows were chosen for the analysis. Blood samples were collected to measure the beta-hydroxybutyrate (BHB), non-esterified fatty acids (NEFA), triglycerides (TG), glucose (Glu), total protein (TP), albumin (ALB), total bilirubin (TB), urea (U) and the activity of aspartate transaminase (AST) and gamma-glutamyl transferase (GGT). Earlyl-actation cows showed significantly higher (P (lt) 0.05) values of serum BHB and NEFA, and lower of (P (lt) 0.05) glycemia levels compared to mid-lactation cows. High lipomobilization (NEFA >0.4 mmol/l) and subclinical ketosis (BHB >1.2 mmol/L) were detected in 6 (40%) and 14 (94.4%) early-lactation cows, respectively, and in none of the mid lactation cows. AST activities above 100 IU/1 were detected in two early-lactation and none of the mid-lactation cows. TG concentrations below 0.12 mmol/l were found in 7 (44%) early-lactation and 2 (13.3%) mid-lactation cows. Glucose levels were below 2.5 mmol/l in 10 (66.6%) early-lactation and 5 (33.3%) mid-lactation cows. Early-lactation cows showed lower blood serum concentrations of TG (P>0.05), ALB (P>0.05), TP (P (lt) 0.05), U (P>0.05) and GTT (P>0.05) activities and higher concentrations of TB (P>0.05) and AST activities (P (lt) 0.05), as compared to mid-lactation cows. These metabolic characteristics were correlated with DMI and energy balance (EB). Blood serum values for glucose, TG, BHB, NEFA and AST showed that early-lactation cows suffered from metabolic disturbances, associated with ketosis, and some degree of hepatic lesions, probably due to fat infiltration. These serum parameters may have a key role in evaluating the metabolic status of dairy cows.",
publisher = "Polska Akad Nauk, Inst Genetyki I Hodowli Zwierzat, Mrokow",
journal = "Animal Science Papers and Reports",
title = "Evaluation of the metabolic status of Simmental dairy cows in early and mid lactation",
volume = "31",
number = "2",
pages = "101-110",
url = "https://hdl.handle.net/21.15107/rcub_veterinar_1022"
}

Đoković, R., Kurcubic, V. S., Ilić, Z. Z., Cincović, M., Fratrić, N., Stanimirović, Z., Petrović, M. D.,& Petrović, M. P.. (2013). Evaluation of the metabolic status of Simmental dairy cows in early and mid lactation. in Animal Science Papers and Reports
Polska Akad Nauk, Inst Genetyki I Hodowli Zwierzat, Mrokow., 31(2), 101-110.
https://hdl.handle.net/21.15107/rcub_veterinar_1022

Đoković R, Kurcubic VS, Ilić ZZ, Cincović M, Fratrić N, Stanimirović Z, Petrović MD, Petrović MP. Evaluation of the metabolic status of Simmental dairy cows in early and mid lactation. in Animal Science Papers and Reports. 2013;31(2):101-110.
https://hdl.handle.net/21.15107/rcub_veterinar_1022 .

Đoković, Radojica, Kurcubic, Vladimir S., Ilić, Zoran Z., Cincović, Marko, Fratrić, Natalija, Stanimirović, Zoran, Petrović, Milun D., Petrović, Milan P., "Evaluation of the metabolic status of Simmental dairy cows in early and mid lactation" in Animal Science Papers and Reports, 31, no. 2 (2013):101-110,
https://hdl.handle.net/21.15107/rcub_veterinar_1022 .

TY  - JOUR
AU  - Bogdanović, Vladan
AU  - Đedović, Radica
AU  - Perišić, Predrag
AU  - Stanojević, D.
AU  - Petrović, Milun D.
AU  - Trivunović, Snežana
AU  - Kučević, Denis
AU  - Petrović, Milan M.
PY  - 2012
UR  - http://r.istocar.bg.ac.rs/handle/123456789/336
AB  - In order to have a more precise description of dairy farm structure and characteristics of dairy production systems, as well as to assess possibilities for improving production and farming conditions in which milk production is organized, a survey based research was directed at a select group of farms across the Serbia. 1180 questionnaires have been mailed to farmers whose farms are registered for either cattle or mixed production. Questionnaire was divided into 6 sections: general information of the farm, agricultural and structural information, zootechnical information, sanitary and veterinarian information, information about education and extension, and information on the perspectives of future farming. About 59% of analyzed farms have size up to 20 ha, with average size of about 10 ha. On the other hand, about 55% farms raises up to 15 cows and heifers with average of 6 heads per farm, while 3% of farms have more than 200 cows and heifers. Over 86% of surveyed farmers intend to expand existing farm production, mainly by increasing the number of animals, stricter selection and improvement of the conditions for feeding, housing, care and milking. About 75% of farmers have expressed a positive expectation from future membership of Serbia in EU, although these expectations are not clearly defined.
AB  - U cilju preciznijeg opisa strukture mlečnih farmi i karakteristika sistema za proizvodnju mleka, kao i procene mogućnosti za unapređenje proizvodnje i farmskih uslova u kojima se proizvodnja mleka organizuje, sprovedena je anketa među poljoprivrednim proizvođačima (farmerima) širom Srbije. Ukupno je poslato 1180 anketa farmerima čije su farme registrovane za govedarsku ili mešovitu proizvodnju. Upitnik koji je poslat farmerima sastojao se iz 6 delova i obuhvatao je opšte informacije o farmi, poljoprivredne i strukturne informacije, zootehničke informacije, sanitarne i veterinarske aspekte proizvodnje, edukaciju i savetodavstvo, kao i perspektive budućeg poslovanja. Oko 59% analiziranih farmi ima veličinu do 20ha, sa prosekom od oko 10ha. Sa druge strane, na oko 55% farmi odgaja se do 15 krava i junica, sa prosekom od 6 grla po farmi. Preko 86% anketiranih farmera namerava da proširi postojeću proizvodnju i to uglavnom povećanjem broja životinja, strožijom selekcijom roditeljskih parova, kao i unapređenjem uslova ishrane, smeštaja i nege. Oko 75% anketiranih farmera izrazilo je pozitivna očekivanja od budućeg članstva Srbije u EU, iako ta očekivanja nisu uvek jasna ili precizno definisana.
PB  - Institute for Animal Husbandry, Belgrade
T2  - Biotechnology in Animal Husbandry
T1  - An assessment of dairy farm structure and characteristics of dairy production systems in Serbia
T1  - Procena strukture mlečnih farmi i karakteristika sistema za proizvodnju mleka u Srbiji
VL  - 28
IS  - 4
SP  - 689
EP  - 696
DO  - 10.2298/BAH1204689B
ER  - 

@article{
author = "Bogdanović, Vladan and Đedović, Radica and Perišić, Predrag and Stanojević, D. and Petrović, Milun D. and Trivunović, Snežana and Kučević, Denis and Petrović, Milan M.",
year = "2012",
abstract = "In order to have a more precise description of dairy farm structure and characteristics of dairy production systems, as well as to assess possibilities for improving production and farming conditions in which milk production is organized, a survey based research was directed at a select group of farms across the Serbia. 1180 questionnaires have been mailed to farmers whose farms are registered for either cattle or mixed production. Questionnaire was divided into 6 sections: general information of the farm, agricultural and structural information, zootechnical information, sanitary and veterinarian information, information about education and extension, and information on the perspectives of future farming. About 59% of analyzed farms have size up to 20 ha, with average size of about 10 ha. On the other hand, about 55% farms raises up to 15 cows and heifers with average of 6 heads per farm, while 3% of farms have more than 200 cows and heifers. Over 86% of surveyed farmers intend to expand existing farm production, mainly by increasing the number of animals, stricter selection and improvement of the conditions for feeding, housing, care and milking. About 75% of farmers have expressed a positive expectation from future membership of Serbia in EU, although these expectations are not clearly defined., U cilju preciznijeg opisa strukture mlečnih farmi i karakteristika sistema za proizvodnju mleka, kao i procene mogućnosti za unapređenje proizvodnje i farmskih uslova u kojima se proizvodnja mleka organizuje, sprovedena je anketa među poljoprivrednim proizvođačima (farmerima) širom Srbije. Ukupno je poslato 1180 anketa farmerima čije su farme registrovane za govedarsku ili mešovitu proizvodnju. Upitnik koji je poslat farmerima sastojao se iz 6 delova i obuhvatao je opšte informacije o farmi, poljoprivredne i strukturne informacije, zootehničke informacije, sanitarne i veterinarske aspekte proizvodnje, edukaciju i savetodavstvo, kao i perspektive budućeg poslovanja. Oko 59% analiziranih farmi ima veličinu do 20ha, sa prosekom od oko 10ha. Sa druge strane, na oko 55% farmi odgaja se do 15 krava i junica, sa prosekom od 6 grla po farmi. Preko 86% anketiranih farmera namerava da proširi postojeću proizvodnju i to uglavnom povećanjem broja životinja, strožijom selekcijom roditeljskih parova, kao i unapređenjem uslova ishrane, smeštaja i nege. Oko 75% anketiranih farmera izrazilo je pozitivna očekivanja od budućeg članstva Srbije u EU, iako ta očekivanja nisu uvek jasna ili precizno definisana.",
publisher = "Institute for Animal Husbandry, Belgrade",
journal = "Biotechnology in Animal Husbandry",
title = "An assessment of dairy farm structure and characteristics of dairy production systems in Serbia, Procena strukture mlečnih farmi i karakteristika sistema za proizvodnju mleka u Srbiji",
volume = "28",
number = "4",
pages = "689-696",
doi = "10.2298/BAH1204689B"
}

Bogdanović, V., Đedović, R., Perišić, P., Stanojević, D., Petrović, M. D., Trivunović, S., Kučević, D.,& Petrović, M. M.. (2012). An assessment of dairy farm structure and characteristics of dairy production systems in Serbia. in Biotechnology in Animal Husbandry
Institute for Animal Husbandry, Belgrade., 28(4), 689-696.
https://doi.org/10.2298/BAH1204689B

Bogdanović V, Đedović R, Perišić P, Stanojević D, Petrović MD, Trivunović S, Kučević D, Petrović MM. An assessment of dairy farm structure and characteristics of dairy production systems in Serbia. in Biotechnology in Animal Husbandry. 2012;28(4):689-696.
doi:10.2298/BAH1204689B .

Bogdanović, Vladan, Đedović, Radica, Perišić, Predrag, Stanojević, D., Petrović, Milun D., Trivunović, Snežana, Kučević, Denis, Petrović, Milan M., "An assessment of dairy farm structure and characteristics of dairy production systems in Serbia" in Biotechnology in Animal Husbandry, 28, no. 4 (2012):689-696,
https://doi.org/10.2298/BAH1204689B . .

TY  - JOUR
AU  - Petrović, Milun D.
AU  - Petrović, Milan M.
AU  - Skalicki, Zlatko
AU  - Bogdanović, Vladan
AU  - Đoković, Radojica
AU  - Rakonjac, Simeon
PY  - 2012
UR  - http://r.istocar.bg.ac.rs/handle/123456789/349
AB  - The effect of interaction between the farm and calving season, as well as the farm and group of lactations on milk performance traits (milk yield, yield of milk fat, 4% fat corrected milk and milk fat content) was analyzed on sample of 2805 Simmental cows with total 9718 standard lactations, housed on dairy farm 'Zlatiborski suvati' on Zlatibor (578 cows and 1968 lactations), dairy farm of the Agricultural holding Dobričevo in Ćuprija (964 cows and 3237 lactations) and dairy animals housed on family farms/households in the region of Kotraža (1263 cows and 4513 lactations). The significance of the effect of interaction between the farm and calving season, as well as interaction between the farm and group of lactations on all milk performance traits was very high (P (lt) 0.001), which justified their inclusion into models for assessment of the breeding value of dairy cows. The share of variance of interactions in total variance of milk performance traits in standard lactations was low (below and around 4%), which clearly indicated even more systematic factors and their interactions which influence the total variability of observed traits of milk performance of cows in standard lactations.
AB  - Uticaj interakcije farme i sezone telenja kao i farme i grupe laktacija na osobine mlečnosti (proizvodnja mleka, mlečne masti, 4% mast-korigovanog mleka i sadržaj mlečne masti) analizirano je kod 2805 krava simentalske rase sa ukupno 9718 standardnih laktacija koje su bile smeštene na farmi muznih krava 'Zlatiborski suvati' na Zlatiboru (578 krava i 1968 laktacija), farmi muznih krava na Poljoprivrednom dobru Dobričevo u Ćupriji (964 krava i 3237 laktacija) i području Kotraže na individualnim gazdinstvima (1263 krava i 4513 laktacija). Značajnost uticaja interakcija farme i sezone telenja, kao i interakcije farme i grupe laktacija na sve osobine mlečnosti standardnih laktacija bila je vrlo visoka (P (lt) 0.001), što opravdava njihovo uključivanje u modele za ocenu priplodne vrednosti muznih krava. Udeo varijanse interakcija u ukupnoj varijansi osobina mlečnosti standardnih laktacija bio je nizak (ispod i oko 4%), što jasno ukazuje na još veliki broj sistematskih faktora i njihovih interakcija koji utiču na ukupnu varijabilnost posmatranih osobina mlečnosti krava u standardnim laktacijama.
PB  - Institute for Animal Husbandry, Belgrade
T2  - Biotechnology in Animal Husbandry
T1  - The effect of interaction of systematic factors on milk performance of Simmental cows in standard lactation
T1  - Efekat interakcije sistematskih faktora na mlečnost krava simentalske rase u standardnim laktacijama
VL  - 28
IS  - 1
SP  - 67
EP  - 75
DO  - 10.2298/BAH1201067P
ER  - 

@article{
author = "Petrović, Milun D. and Petrović, Milan M. and Skalicki, Zlatko and Bogdanović, Vladan and Đoković, Radojica and Rakonjac, Simeon",
year = "2012",
abstract = "The effect of interaction between the farm and calving season, as well as the farm and group of lactations on milk performance traits (milk yield, yield of milk fat, 4% fat corrected milk and milk fat content) was analyzed on sample of 2805 Simmental cows with total 9718 standard lactations, housed on dairy farm 'Zlatiborski suvati' on Zlatibor (578 cows and 1968 lactations), dairy farm of the Agricultural holding Dobričevo in Ćuprija (964 cows and 3237 lactations) and dairy animals housed on family farms/households in the region of Kotraža (1263 cows and 4513 lactations). The significance of the effect of interaction between the farm and calving season, as well as interaction between the farm and group of lactations on all milk performance traits was very high (P (lt) 0.001), which justified their inclusion into models for assessment of the breeding value of dairy cows. The share of variance of interactions in total variance of milk performance traits in standard lactations was low (below and around 4%), which clearly indicated even more systematic factors and their interactions which influence the total variability of observed traits of milk performance of cows in standard lactations., Uticaj interakcije farme i sezone telenja kao i farme i grupe laktacija na osobine mlečnosti (proizvodnja mleka, mlečne masti, 4% mast-korigovanog mleka i sadržaj mlečne masti) analizirano je kod 2805 krava simentalske rase sa ukupno 9718 standardnih laktacija koje su bile smeštene na farmi muznih krava 'Zlatiborski suvati' na Zlatiboru (578 krava i 1968 laktacija), farmi muznih krava na Poljoprivrednom dobru Dobričevo u Ćupriji (964 krava i 3237 laktacija) i području Kotraže na individualnim gazdinstvima (1263 krava i 4513 laktacija). Značajnost uticaja interakcija farme i sezone telenja, kao i interakcije farme i grupe laktacija na sve osobine mlečnosti standardnih laktacija bila je vrlo visoka (P (lt) 0.001), što opravdava njihovo uključivanje u modele za ocenu priplodne vrednosti muznih krava. Udeo varijanse interakcija u ukupnoj varijansi osobina mlečnosti standardnih laktacija bio je nizak (ispod i oko 4%), što jasno ukazuje na još veliki broj sistematskih faktora i njihovih interakcija koji utiču na ukupnu varijabilnost posmatranih osobina mlečnosti krava u standardnim laktacijama.",
publisher = "Institute for Animal Husbandry, Belgrade",
journal = "Biotechnology in Animal Husbandry",
title = "The effect of interaction of systematic factors on milk performance of Simmental cows in standard lactation, Efekat interakcije sistematskih faktora na mlečnost krava simentalske rase u standardnim laktacijama",
volume = "28",
number = "1",
pages = "67-75",
doi = "10.2298/BAH1201067P"
}

Petrović, M. D., Petrović, M. M., Skalicki, Z., Bogdanović, V., Đoković, R.,& Rakonjac, S.. (2012). The effect of interaction of systematic factors on milk performance of Simmental cows in standard lactation. in Biotechnology in Animal Husbandry
Institute for Animal Husbandry, Belgrade., 28(1), 67-75.
https://doi.org/10.2298/BAH1201067P

Petrović MD, Petrović MM, Skalicki Z, Bogdanović V, Đoković R, Rakonjac S. The effect of interaction of systematic factors on milk performance of Simmental cows in standard lactation. in Biotechnology in Animal Husbandry. 2012;28(1):67-75.
doi:10.2298/BAH1201067P .

Petrović, Milun D., Petrović, Milan M., Skalicki, Zlatko, Bogdanović, Vladan, Đoković, Radojica, Rakonjac, Simeon, "The effect of interaction of systematic factors on milk performance of Simmental cows in standard lactation" in Biotechnology in Animal Husbandry, 28, no. 1 (2012):67-75,
https://doi.org/10.2298/BAH1201067P . .

TY  - JOUR
AU  - Đedović, Radica
AU  - Bogdanović, Vladan
AU  - Trifunović, Gligorije
AU  - Petrović, Milun D.
AU  - Petrović, Milan M.
AU  - Stanojević, D.
PY  - 2012
UR  - http://r.istocar.bg.ac.rs/handle/123456789/345
AB  - In this study a relationship between the milk yield and following reproduction traits: number of inseminations per conception [AIS], service period [SP], age at calving [AC], calving interval [CI] and birth weight [BW] is studied. The research involved dairy cows of European type of Black and White cattle which are being intensively improved by the genes of Holstein - Friesian breed. Mean values of general average for number of inseminations per conception, service period, age at calving, calving interval and birth weight are: 2.00; 98.78; 1088.08; 376.70 and 36.40, respectively. In general, the estimated phenotypic correlations (rp) between the milk yield over standard lactations and fertility traits were positive and unfavorable, and ranged from 0.24 for the relationship between milk yield and birth weight to 0.70 for relationship between milk yield and age at calving.
AB  - U radu je ispitivan odnos između prinosa mleka i sledećih osobina plodnosti: indeks osemenjavanja [IO], servis period [SP], uzrast pri teljenju [UT], međutelidbeni interval [MI] i masa teladi pri rođenju [MTR]. Ispitivanja su se odnosila na mlečne krave evropskog tipa crno-belih goveda koje se intenzivno oplemenjuju genima holštajn-frizijske rase. Za analizu je korišćen Metod najmanjih kvadrata - LSMLMW (HARVEY, 1990), fiksni model. Srednje vrednosti opšteg proseka za indeks osemenjavanja, servis period, uzrast pri teljenju, međutelidbeni interval i masu teladi pri rođenju su: 2,00; 98,78; 1088,08 ; 376,70 i 36,40, respektivno. Procenjene fenotipske korelacije (rp) između prinosa mleka i osobina plodnosti generalno su bile pozitivne i nepovoljne, i imale su vrednosti od 0,24 za odnos između prinosa mleka i masu teladi pri rođenju do 0,70 za odnos između prinosa mleka i uzrasta pri teljenju.
PB  - Institute for Animal Husbandry, Belgrade
T2  - Biotechnology in Animal Husbandry
T1  - The effect of the level of milk yield on the reproduction traits in black and white cows
T1  - Uticaj nivoa mlečnosti na osobine plodnosti krava crno bele rase
VL  - 28
IS  - 3
SP  - 487
EP  - 496
DO  - 10.2298/BAH1203487D
ER  - 

@article{
author = "Đedović, Radica and Bogdanović, Vladan and Trifunović, Gligorije and Petrović, Milun D. and Petrović, Milan M. and Stanojević, D.",
year = "2012",
abstract = "In this study a relationship between the milk yield and following reproduction traits: number of inseminations per conception [AIS], service period [SP], age at calving [AC], calving interval [CI] and birth weight [BW] is studied. The research involved dairy cows of European type of Black and White cattle which are being intensively improved by the genes of Holstein - Friesian breed. Mean values of general average for number of inseminations per conception, service period, age at calving, calving interval and birth weight are: 2.00; 98.78; 1088.08; 376.70 and 36.40, respectively. In general, the estimated phenotypic correlations (rp) between the milk yield over standard lactations and fertility traits were positive and unfavorable, and ranged from 0.24 for the relationship between milk yield and birth weight to 0.70 for relationship between milk yield and age at calving., U radu je ispitivan odnos između prinosa mleka i sledećih osobina plodnosti: indeks osemenjavanja [IO], servis period [SP], uzrast pri teljenju [UT], međutelidbeni interval [MI] i masa teladi pri rođenju [MTR]. Ispitivanja su se odnosila na mlečne krave evropskog tipa crno-belih goveda koje se intenzivno oplemenjuju genima holštajn-frizijske rase. Za analizu je korišćen Metod najmanjih kvadrata - LSMLMW (HARVEY, 1990), fiksni model. Srednje vrednosti opšteg proseka za indeks osemenjavanja, servis period, uzrast pri teljenju, međutelidbeni interval i masu teladi pri rođenju su: 2,00; 98,78; 1088,08 ; 376,70 i 36,40, respektivno. Procenjene fenotipske korelacije (rp) između prinosa mleka i osobina plodnosti generalno su bile pozitivne i nepovoljne, i imale su vrednosti od 0,24 za odnos između prinosa mleka i masu teladi pri rođenju do 0,70 za odnos između prinosa mleka i uzrasta pri teljenju.",
publisher = "Institute for Animal Husbandry, Belgrade",
journal = "Biotechnology in Animal Husbandry",
title = "The effect of the level of milk yield on the reproduction traits in black and white cows, Uticaj nivoa mlečnosti na osobine plodnosti krava crno bele rase",
volume = "28",
number = "3",
pages = "487-496",
doi = "10.2298/BAH1203487D"
}

Đedović, R., Bogdanović, V., Trifunović, G., Petrović, M. D., Petrović, M. M.,& Stanojević, D.. (2012). The effect of the level of milk yield on the reproduction traits in black and white cows. in Biotechnology in Animal Husbandry
Institute for Animal Husbandry, Belgrade., 28(3), 487-496.
https://doi.org/10.2298/BAH1203487D

Đedović R, Bogdanović V, Trifunović G, Petrović MD, Petrović MM, Stanojević D. The effect of the level of milk yield on the reproduction traits in black and white cows. in Biotechnology in Animal Husbandry. 2012;28(3):487-496.
doi:10.2298/BAH1203487D .

Đedović, Radica, Bogdanović, Vladan, Trifunović, Gligorije, Petrović, Milun D., Petrović, Milan M., Stanojević, D., "The effect of the level of milk yield on the reproduction traits in black and white cows" in Biotechnology in Animal Husbandry, 28, no. 3 (2012):487-496,
https://doi.org/10.2298/BAH1203487D . .

TY  - JOUR
AU  - Petrović, Milun D.
AU  - Bogdanović, Vladan
AU  - Petrović, Milan M.
AU  - Rakonjac, Simeon
PY  - 2011
UR  - http://r.istocar.bg.ac.rs/handle/123456789/271
AB  - The relationship between milk production traits over whole lactations was evaluated across three generations of Simmental cows, i.e. between daughters, dams and grand dams, by a phenotypic regression analysis with whole lactation traits in the daughter generation being used as the dependent variables (x1), and those in the dam and grand dam generations being used as the independent variables (x2 and x3). The results were obtained from a sample of 1170 daughters and as many dams and grand dams. The significance of the partial regression coefficients b2 and b3 was separately evaluated by a t-test. An analysis of variance was used to estimate the significance of the simultaneous effect of the production traits of dams and grand dams on the milk production achieved in the daughter generation. The calculated value of the partial regression coefficients for the whole lactation production traits across three generations (grand dams, dams and daughters) and their statistical significances determined by the t and F tests, as well as the regression equations used, suggested that the effect of the grand dam generation on the milk production traits in granddaughters was substantially lower than the effect of dams. The calculated partial regression coefficients (b2 and b3) were positive and statistically very significant (P (lt) 0.01), excepting the regression coefficients b3 for lactation length and b2 for milk fat content that were not statistically significant (P>0.05). A very significant change (P (lt) 0.01) was observed in all production traits in the daughter generation as simultaneously affected by the traits in the dam and grand dam generations.
AB  - Povezanost osobina mlečnosti u punim laktacijama analizirana je između tri generacije krava simentalske rase, odnosno između kćerki, majki i baba, fenotipskom regresionom analizom u uslovima kada su osobine punih laktacija u generaciji kćerki posmatrane kao zavisno (x1), a osobine punih laktacija u generaciji majki i baba kao nezavisno promenljive (x2 i x3). Rezultati su dobijeni na uzorku od po 1170 kćerki, majki i baba. Pojedinačno ispitivanje značajnosti delimičnih regresionih koeficijenata b2 i b3 izvršeno je t-testom, a analizom značajnosti istovremenog uticaja proizvodnih osobina majki i baba na ostvarenu proizvodnju kod kćerki izvršena je metodom analize varijanse. Na osnovu izračunate vrednosti delimičnih regresionih koeficijenata za proizvodne osobine celih laktacija kroz tri generacije (babe, majke i kćerke) i njihove statističke značajnosti određene t i F testom, kao i jednačina regresije konstatovano je da je uticaj generacije baba na proizvodnju unuka znatno manji u odnosu na uticaj kojeg imaju majke. Svi izračunati delimični koeficijenti regresije (b2 i b3) bili su pozitivni i statistički vrlo značajni (P (lt) 0.01), izuzimajući koeficijent regresije b3 kod trajanja laktacije i b2 kod sadržaja mlečne masti koji nisu bili statistički značajni (P>0.05). Značajnost promena svih posmatranih proizvodnih osobina u generaciji kćerki pri istovremenom uticaju tih osobina iz generacije majki i baba bila je vrlo visoka (P (lt) 0.01).
PB  - Institute for Animal Husbandry, Belgrade
T2  - Biotechnology in Animal Husbandry
T1  - Regression analysis of milk production traits in Simmental cows
T1  - Korelaciona analiza povezanosti proizvodnih osobina kroz tri generacije krava simentalske rase
VL  - 27
IS  - 4
SP  - 1433
EP  - 1441
DO  - 10.2298/BAH1104433P
ER  - 

@article{
author = "Petrović, Milun D. and Bogdanović, Vladan and Petrović, Milan M. and Rakonjac, Simeon",
year = "2011",
abstract = "The relationship between milk production traits over whole lactations was evaluated across three generations of Simmental cows, i.e. between daughters, dams and grand dams, by a phenotypic regression analysis with whole lactation traits in the daughter generation being used as the dependent variables (x1), and those in the dam and grand dam generations being used as the independent variables (x2 and x3). The results were obtained from a sample of 1170 daughters and as many dams and grand dams. The significance of the partial regression coefficients b2 and b3 was separately evaluated by a t-test. An analysis of variance was used to estimate the significance of the simultaneous effect of the production traits of dams and grand dams on the milk production achieved in the daughter generation. The calculated value of the partial regression coefficients for the whole lactation production traits across three generations (grand dams, dams and daughters) and their statistical significances determined by the t and F tests, as well as the regression equations used, suggested that the effect of the grand dam generation on the milk production traits in granddaughters was substantially lower than the effect of dams. The calculated partial regression coefficients (b2 and b3) were positive and statistically very significant (P (lt) 0.01), excepting the regression coefficients b3 for lactation length and b2 for milk fat content that were not statistically significant (P>0.05). A very significant change (P (lt) 0.01) was observed in all production traits in the daughter generation as simultaneously affected by the traits in the dam and grand dam generations., Povezanost osobina mlečnosti u punim laktacijama analizirana je između tri generacije krava simentalske rase, odnosno između kćerki, majki i baba, fenotipskom regresionom analizom u uslovima kada su osobine punih laktacija u generaciji kćerki posmatrane kao zavisno (x1), a osobine punih laktacija u generaciji majki i baba kao nezavisno promenljive (x2 i x3). Rezultati su dobijeni na uzorku od po 1170 kćerki, majki i baba. Pojedinačno ispitivanje značajnosti delimičnih regresionih koeficijenata b2 i b3 izvršeno je t-testom, a analizom značajnosti istovremenog uticaja proizvodnih osobina majki i baba na ostvarenu proizvodnju kod kćerki izvršena je metodom analize varijanse. Na osnovu izračunate vrednosti delimičnih regresionih koeficijenata za proizvodne osobine celih laktacija kroz tri generacije (babe, majke i kćerke) i njihove statističke značajnosti određene t i F testom, kao i jednačina regresije konstatovano je da je uticaj generacije baba na proizvodnju unuka znatno manji u odnosu na uticaj kojeg imaju majke. Svi izračunati delimični koeficijenti regresije (b2 i b3) bili su pozitivni i statistički vrlo značajni (P (lt) 0.01), izuzimajući koeficijent regresije b3 kod trajanja laktacije i b2 kod sadržaja mlečne masti koji nisu bili statistički značajni (P>0.05). Značajnost promena svih posmatranih proizvodnih osobina u generaciji kćerki pri istovremenom uticaju tih osobina iz generacije majki i baba bila je vrlo visoka (P (lt) 0.01).",
publisher = "Institute for Animal Husbandry, Belgrade",
journal = "Biotechnology in Animal Husbandry",
title = "Regression analysis of milk production traits in Simmental cows, Korelaciona analiza povezanosti proizvodnih osobina kroz tri generacije krava simentalske rase",
volume = "27",
number = "4",
pages = "1433-1441",
doi = "10.2298/BAH1104433P"
}

Petrović, M. D., Bogdanović, V., Petrović, M. M.,& Rakonjac, S.. (2011). Regression analysis of milk production traits in Simmental cows. in Biotechnology in Animal Husbandry
Institute for Animal Husbandry, Belgrade., 27(4), 1433-1441.
https://doi.org/10.2298/BAH1104433P

Petrović MD, Bogdanović V, Petrović MM, Rakonjac S. Regression analysis of milk production traits in Simmental cows. in Biotechnology in Animal Husbandry. 2011;27(4):1433-1441.
doi:10.2298/BAH1104433P .

Petrović, Milun D., Bogdanović, Vladan, Petrović, Milan M., Rakonjac, Simeon, "Regression analysis of milk production traits in Simmental cows" in Biotechnology in Animal Husbandry, 27, no. 4 (2011):1433-1441,
https://doi.org/10.2298/BAH1104433P . .

TY  - JOUR
AU  - Petrović, Milan M.
AU  - Sretenović, Ljiljana
AU  - Aleksić, S.
AU  - Pantelić, Vlada
AU  - Novaković, Željko
AU  - Perišić, Predrag
AU  - Petrović, Milun D.
PY  - 2009
UR  - http://r.istocar.bg.ac.rs/handle/123456789/185
AB  - Results of the effect of direct and indirect selection of quantitative traits of fertility and milk performance of first calving cows of Simmental breed in Serbia are presented. Investigation of genetic parameters of heritability (additive genetic variance in total phenotypic variability of quantitative traits) and analysis of milk traits was done in four breeding regions and several tenths of farms where 3980 daughters of 32 sires were housed and reared. Results of analysis were obtained by application of mathematical-statistical data analysis, using mixed models (Harvey, 1990). Mathematical-statistical analysis of data was done using linear methods, i.e. method of least squares (LS method). Based on obtained results it was established that bulls-sires and several paragenetic factors caused no significant variation of fertility traits in relation to general average (P (lt) 0.01). Quantitative milk traits of first calving cows, under the influence of breeding region, had significantly higher deviation from the general average (**P (lt) 0.01). Significant deviations (*P (lt) 0.05) were caused by year of calving on milk yield and yield of milk fat (4765.0 kg and milk fat 3.86%). Established heritability coefficients for reproductive traits were following: .102, .051 and .088, and milk traits .297, .207 and .197).
AB  - Najbrojnija populacija goveda u Republici Srbiji pripada Simentalskoj rasi (oko 500.000 plotkinja ili više od 80%). Ako se imaju u vidu tekuće promene u genetskom poboljšanju goveda i veoma velikom napretku u tehnologijama reprodukcije, očigledno da će se sadašnji programi morati menjati i poboljšavati. S obzirom na to, da je ekonomski značaj reproduktivnih i osobina mlečnosti visok neophodno je poznavanje pojedinih faktora koji utiču na plodnost i mlečnost krava, a oni se dele na genetske i paragenetske. Uspeh u poboljšanju plodnosti genetskim putem je dosta ograničen niskim vrednostima heritabiliteta, što ne znači da geni ne deluju na ovu osobinu, već da je vrednost aditivne genetske varijacije mala. Naslednost, odnosno proučavanje aditivne genetske varijanse u ukupnoj fenotipskoj varijabilnosti kvantitativnih osobina, predstavlja deo najvažjnijih istraživanja sa gledišta stvaranja populacije goveda visokih genetskih potencijala i odabiranja roditeljskih parova budućih generacija. Vrednosti koeficijenata naslednosti za osobine plodnosti su pod uticajem različitih faktora, kao što su: genotip životinje, uzrast, intenzitet selekcije, metod odgajivanja, ambijentalni uslovi i dr. Cilj ovih istraživanja je bio da se ispitaju važniji genetski parametri plodnosti i mlečnosti, odnosno naslednosti ovih kvantitativnih osobina radi izbora pravca i daljeg oplemenjivanja ove populacije. Prikupljeni podaci za analizu potiču iz četiri regiona - odgajivačka područja u Srbiji. Istraživanja su uključila 3980 krava - prvotelki simentalske rase, kćeri 32 bika - oca, koje su oteljene u periodu od šest godina (2002-2007). Sva ispitivana grla (krave - prvotelke) su držana vezano i slobodno u posedu privatnih farmera (od 8 do 65 grla po farmi) i bila su standardno hranjena, a razlike su bile u količini, odnosu i kvalitetu kabaste i koncentrovane hrane (područje gajenja). Matematičko-statistička analiza podataka obavljena je primenom mešovitog modela najmanjih kvadrata (LS-Least Squares) primenom programa najmanjih kvadrata (LSMLMW), Harvey, (1990). Različiti broj individua u pojedinim klasama kao i postojanje više uticaja (područje, godina telenja, sezona telenja, bikovi očevi) koji su delovali na ispoljavanje ispitivanih osobina, uslovio je analizu u kojoj je korišćen metod najmanjih kvadrata. Bikovi-očevi i niz paragenetskih uticaja nisu prouzrokovali značajno variranje osobina plodnosti u odnosu na opšti prosek (P (lt) 0.01). Kvantitativne osobine mlečnosti krava prvotelki su pod uticajem odgajivačkog područja imale visoko značajno odstupanje od opšteg proseka (**P (lt) 0.01). Značajna odstupanja (P (lt) 0.05) je izazvala godina telenja na prinos mleka i mlečne masti. Godišnje doba početka laktacije krava obuhvaćenih našim istraživanjem pokazuje značajna odstupanja prinosa mleka i mlečne masti u odnosu na opšti prosek (P (lt) 0.01). Tako su junice oteljene u februaru , martu i aprilu imale značajno i visoko značajno više mleka i mlečne masti u odnosu na one koje su se otelile u drugim mesecima u godini. Ustanovljeni koeficijenti heritabiliteta reproduktivnih svojstava koji su dobijeni našim istraživanjem su imali niske vrednosti i bili su nižeg nivoa u odnosu na one koje su dobili Petrović et al. (1998, 2001, 2006). Rezultati naslednosti osobina mlečnosti dobijeni našim istraživanjima su bili viši u odnosu na koeficijente za iste osobine koje su objavili Panić and Vidović (2006), niži u odnosu na rezultate istraživanja Petrović et al. (1999) and Kapš and Špehar (2004) a u saglasnosti sa koeficijentima heritabiliteta koje su u turskoj populaciji simentalskih goveda ustanovili Ulek and Tekun (2006).
PB  - Institute for Animal Husbandry, Belgrade
T2  - Biotechnology in Animal Husbandry
T1  - Investigation of the heritability of phenotypes of fertility and milk performance of Simmental cattle breed in Serbia
T1  - Ispitivanje naslednosti fenotipova plodnosti i mlečnosti simentalske rase goveda u Srbiji
VL  - 25
IS  - 5-6-1
SP  - 285
EP  - 292
DO  - 10.2298/BAH0906285P
ER  - 

@article{
author = "Petrović, Milan M. and Sretenović, Ljiljana and Aleksić, S. and Pantelić, Vlada and Novaković, Željko and Perišić, Predrag and Petrović, Milun D.",
year = "2009",
abstract = "Results of the effect of direct and indirect selection of quantitative traits of fertility and milk performance of first calving cows of Simmental breed in Serbia are presented. Investigation of genetic parameters of heritability (additive genetic variance in total phenotypic variability of quantitative traits) and analysis of milk traits was done in four breeding regions and several tenths of farms where 3980 daughters of 32 sires were housed and reared. Results of analysis were obtained by application of mathematical-statistical data analysis, using mixed models (Harvey, 1990). Mathematical-statistical analysis of data was done using linear methods, i.e. method of least squares (LS method). Based on obtained results it was established that bulls-sires and several paragenetic factors caused no significant variation of fertility traits in relation to general average (P (lt) 0.01). Quantitative milk traits of first calving cows, under the influence of breeding region, had significantly higher deviation from the general average (**P (lt) 0.01). Significant deviations (*P (lt) 0.05) were caused by year of calving on milk yield and yield of milk fat (4765.0 kg and milk fat 3.86%). Established heritability coefficients for reproductive traits were following: .102, .051 and .088, and milk traits .297, .207 and .197)., Najbrojnija populacija goveda u Republici Srbiji pripada Simentalskoj rasi (oko 500.000 plotkinja ili više od 80%). Ako se imaju u vidu tekuće promene u genetskom poboljšanju goveda i veoma velikom napretku u tehnologijama reprodukcije, očigledno da će se sadašnji programi morati menjati i poboljšavati. S obzirom na to, da je ekonomski značaj reproduktivnih i osobina mlečnosti visok neophodno je poznavanje pojedinih faktora koji utiču na plodnost i mlečnost krava, a oni se dele na genetske i paragenetske. Uspeh u poboljšanju plodnosti genetskim putem je dosta ograničen niskim vrednostima heritabiliteta, što ne znači da geni ne deluju na ovu osobinu, već da je vrednost aditivne genetske varijacije mala. Naslednost, odnosno proučavanje aditivne genetske varijanse u ukupnoj fenotipskoj varijabilnosti kvantitativnih osobina, predstavlja deo najvažjnijih istraživanja sa gledišta stvaranja populacije goveda visokih genetskih potencijala i odabiranja roditeljskih parova budućih generacija. Vrednosti koeficijenata naslednosti za osobine plodnosti su pod uticajem različitih faktora, kao što su: genotip životinje, uzrast, intenzitet selekcije, metod odgajivanja, ambijentalni uslovi i dr. Cilj ovih istraživanja je bio da se ispitaju važniji genetski parametri plodnosti i mlečnosti, odnosno naslednosti ovih kvantitativnih osobina radi izbora pravca i daljeg oplemenjivanja ove populacije. Prikupljeni podaci za analizu potiču iz četiri regiona - odgajivačka područja u Srbiji. Istraživanja su uključila 3980 krava - prvotelki simentalske rase, kćeri 32 bika - oca, koje su oteljene u periodu od šest godina (2002-2007). Sva ispitivana grla (krave - prvotelke) su držana vezano i slobodno u posedu privatnih farmera (od 8 do 65 grla po farmi) i bila su standardno hranjena, a razlike su bile u količini, odnosu i kvalitetu kabaste i koncentrovane hrane (područje gajenja). Matematičko-statistička analiza podataka obavljena je primenom mešovitog modela najmanjih kvadrata (LS-Least Squares) primenom programa najmanjih kvadrata (LSMLMW), Harvey, (1990). Različiti broj individua u pojedinim klasama kao i postojanje više uticaja (područje, godina telenja, sezona telenja, bikovi očevi) koji su delovali na ispoljavanje ispitivanih osobina, uslovio je analizu u kojoj je korišćen metod najmanjih kvadrata. Bikovi-očevi i niz paragenetskih uticaja nisu prouzrokovali značajno variranje osobina plodnosti u odnosu na opšti prosek (P (lt) 0.01). Kvantitativne osobine mlečnosti krava prvotelki su pod uticajem odgajivačkog područja imale visoko značajno odstupanje od opšteg proseka (**P (lt) 0.01). Značajna odstupanja (P (lt) 0.05) je izazvala godina telenja na prinos mleka i mlečne masti. Godišnje doba početka laktacije krava obuhvaćenih našim istraživanjem pokazuje značajna odstupanja prinosa mleka i mlečne masti u odnosu na opšti prosek (P (lt) 0.01). Tako su junice oteljene u februaru , martu i aprilu imale značajno i visoko značajno više mleka i mlečne masti u odnosu na one koje su se otelile u drugim mesecima u godini. Ustanovljeni koeficijenti heritabiliteta reproduktivnih svojstava koji su dobijeni našim istraživanjem su imali niske vrednosti i bili su nižeg nivoa u odnosu na one koje su dobili Petrović et al. (1998, 2001, 2006). Rezultati naslednosti osobina mlečnosti dobijeni našim istraživanjima su bili viši u odnosu na koeficijente za iste osobine koje su objavili Panić and Vidović (2006), niži u odnosu na rezultate istraživanja Petrović et al. (1999) and Kapš and Špehar (2004) a u saglasnosti sa koeficijentima heritabiliteta koje su u turskoj populaciji simentalskih goveda ustanovili Ulek and Tekun (2006).",
publisher = "Institute for Animal Husbandry, Belgrade",
journal = "Biotechnology in Animal Husbandry",
title = "Investigation of the heritability of phenotypes of fertility and milk performance of Simmental cattle breed in Serbia, Ispitivanje naslednosti fenotipova plodnosti i mlečnosti simentalske rase goveda u Srbiji",
volume = "25",
number = "5-6-1",
pages = "285-292",
doi = "10.2298/BAH0906285P"
}

Petrović, M. M., Sretenović, L., Aleksić, S., Pantelić, V., Novaković, Ž., Perišić, P.,& Petrović, M. D.. (2009). Investigation of the heritability of phenotypes of fertility and milk performance of Simmental cattle breed in Serbia. in Biotechnology in Animal Husbandry
Institute for Animal Husbandry, Belgrade., 25(5-6-1), 285-292.
https://doi.org/10.2298/BAH0906285P

Petrović MM, Sretenović L, Aleksić S, Pantelić V, Novaković Ž, Perišić P, Petrović MD. Investigation of the heritability of phenotypes of fertility and milk performance of Simmental cattle breed in Serbia. in Biotechnology in Animal Husbandry. 2009;25(5-6-1):285-292.
doi:10.2298/BAH0906285P .

Petrović, Milan M., Sretenović, Ljiljana, Aleksić, S., Pantelić, Vlada, Novaković, Željko, Perišić, Predrag, Petrović, Milun D., "Investigation of the heritability of phenotypes of fertility and milk performance of Simmental cattle breed in Serbia" in Biotechnology in Animal Husbandry, 25, no. 5-6-1 (2009):285-292,
https://doi.org/10.2298/BAH0906285P . .

TY  - JOUR
AU  - Petrović, Milun D.
AU  - Skalicki, Zlatko
AU  - Petrović, Milan M.
AU  - Bogdanović, Vladan
PY  - 2009
UR  - http://r.istocar.bg.ac.rs/handle/123456789/213
AB  - The effect of systematic factors on production traits over complete lactations was investigated in 2,805 Simmental cows born in 1982 and onwards. The cows were housed at three farms in different areas: at the Zlatiborski Suvati dairy farm, Zlatibor, at the Dobricevo Agricultural Farm, Cuprija and at private farms in the region of Kotraze. The systematic factors (farm, calving season, lactation groups, group (year x season of birth), farm x calving season and farm x lactation group interactions) and age at first conception had statistically highly significant (P (lt) 0.001) effects on all complete lactation traits, with the exception of the effect of calving season on complete lactation duration (P (lt) 0.05) and milk-fat content (P>0.05). No statistically significant effect was produced by age at first conception on complete lactation duration and milk-fat content (P>0.05). Determination coefficients ranged from 0.100 in complete lactation duration to 0.361 in milk-fat content.
AB  - Ispitivanje uticaja sistematskih faktora na ispoljenost proizvodnih osobina celih laktacija obavljeno je kod 2805 krava simentalske rase rođenih od 1982. godine pa na dalje. Krave su smeštene na tri farme, odnosno područja: farmi muznih krava 'Zlatiborski suvati' na Zlatiboru, Poljoprivrednom dobru Dobričevo u Ćupriji i području Kotraže na individualnim gazdinstvima. Sistematski faktori (farma, sezona telenja, grupe laktacija, grupa (godina x sezona rođenja), interakcije farma x sezona telenja i farma x grupe laktacija) i uzrast pri prvoj oplodnji statistički su vrlo visoko značajano (P (lt) 0.001) uticali na sve osobine punih laktacija, izuzimajući uticaj sezone telenja na trajanje punih laktacija (P (lt) 0.05) i sadržaj mlečne masti (P>0.05). Uzrast pri prvoj oplodnji nije statistički značajno uticao na trajanje celih laktacija i sadržaj mlečne masti u njima (P>0.05). Koeficijenti determinacije kretali su se od 0.100 kod trajanja celih laktacija do 0.361 kod sadržaja mlečne masti.
PB  - Institute for Animal Husbandry, Belgrade
T2  - Biotechnology in Animal Husbandry
T1  - The effect of systematic factors on milk yield in Simmental cows over complete lactations
T1  - Uticaj sistematskih faktora na mlečnost krava Simentalske rase u celim laktacijama
VL  - 25
IS  - 1-2
SP  - 61
EP  - 71
DO  - 10.2298/BAH0902061P
ER  - 

@article{
author = "Petrović, Milun D. and Skalicki, Zlatko and Petrović, Milan M. and Bogdanović, Vladan",
year = "2009",
abstract = "The effect of systematic factors on production traits over complete lactations was investigated in 2,805 Simmental cows born in 1982 and onwards. The cows were housed at three farms in different areas: at the Zlatiborski Suvati dairy farm, Zlatibor, at the Dobricevo Agricultural Farm, Cuprija and at private farms in the region of Kotraze. The systematic factors (farm, calving season, lactation groups, group (year x season of birth), farm x calving season and farm x lactation group interactions) and age at first conception had statistically highly significant (P (lt) 0.001) effects on all complete lactation traits, with the exception of the effect of calving season on complete lactation duration (P (lt) 0.05) and milk-fat content (P>0.05). No statistically significant effect was produced by age at first conception on complete lactation duration and milk-fat content (P>0.05). Determination coefficients ranged from 0.100 in complete lactation duration to 0.361 in milk-fat content., Ispitivanje uticaja sistematskih faktora na ispoljenost proizvodnih osobina celih laktacija obavljeno je kod 2805 krava simentalske rase rođenih od 1982. godine pa na dalje. Krave su smeštene na tri farme, odnosno područja: farmi muznih krava 'Zlatiborski suvati' na Zlatiboru, Poljoprivrednom dobru Dobričevo u Ćupriji i području Kotraže na individualnim gazdinstvima. Sistematski faktori (farma, sezona telenja, grupe laktacija, grupa (godina x sezona rođenja), interakcije farma x sezona telenja i farma x grupe laktacija) i uzrast pri prvoj oplodnji statistički su vrlo visoko značajano (P (lt) 0.001) uticali na sve osobine punih laktacija, izuzimajući uticaj sezone telenja na trajanje punih laktacija (P (lt) 0.05) i sadržaj mlečne masti (P>0.05). Uzrast pri prvoj oplodnji nije statistički značajno uticao na trajanje celih laktacija i sadržaj mlečne masti u njima (P>0.05). Koeficijenti determinacije kretali su se od 0.100 kod trajanja celih laktacija do 0.361 kod sadržaja mlečne masti.",
publisher = "Institute for Animal Husbandry, Belgrade",
journal = "Biotechnology in Animal Husbandry",
title = "The effect of systematic factors on milk yield in Simmental cows over complete lactations, Uticaj sistematskih faktora na mlečnost krava Simentalske rase u celim laktacijama",
volume = "25",
number = "1-2",
pages = "61-71",
doi = "10.2298/BAH0902061P"
}

Petrović, M. D., Skalicki, Z., Petrović, M. M.,& Bogdanović, V.. (2009). The effect of systematic factors on milk yield in Simmental cows over complete lactations. in Biotechnology in Animal Husbandry
Institute for Animal Husbandry, Belgrade., 25(1-2), 61-71.
https://doi.org/10.2298/BAH0902061P

Petrović MD, Skalicki Z, Petrović MM, Bogdanović V. The effect of systematic factors on milk yield in Simmental cows over complete lactations. in Biotechnology in Animal Husbandry. 2009;25(1-2):61-71.
doi:10.2298/BAH0902061P .

Petrović, Milun D., Skalicki, Zlatko, Petrović, Milan M., Bogdanović, Vladan, "The effect of systematic factors on milk yield in Simmental cows over complete lactations" in Biotechnology in Animal Husbandry, 25, no. 1-2 (2009):61-71,
https://doi.org/10.2298/BAH0902061P . .

TY  - JOUR
AU  - Petrović, Milan M.
AU  - Sretenović, Ljiljana
AU  - Bogdanović, Vladan
AU  - Perišić, Predrag
AU  - Aleksić, S.
AU  - Pantelić, Vlada
AU  - Petrović, Milun D.
AU  - Novaković, Željko
PY  - 2009
UR  - http://r.istocar.bg.ac.rs/handle/123456789/211
AB  - Results of the effect of direct and indirect selection on quantitative properties of milk production of first calving Simmental cows in Serbia, are presented in the paper. Analysis of quantitative phenotypic parameters was carried out in four breeding regions and certain number of smaller farms where 1319 daughters of 13 bull sires were reared. Results of the analysis were obtained by application of mathematical-statistical data analysis, using mixed models (Harvey, 1990). Mathematical-statistical analysis of data was carried out using linear methods with fixed effect, through method of least squares (LS method), and for evaluation of bull breeding value mixed model of random bull sire effect was used (BLUP method). Based on obtained results it was established that analyzed breeding region has statistically highly significantly (**P (lt) 0.01.) caused deviations of production phenotypes from general average. Season and year of calving (*P (lt) 0.05.) have caused significant variations of production properties. .
AB  - U radu su prikazani rezultati efekata direktne i indirektne selekcije kvantitativnih svojstava mlečnosti krava-prvotelki simentalske rase goveda u Srbiji. Analiza kvanitativnih fenotipskih parametara je obavljena u četiri odgajivačka područja i na više desetina manjih farmi na kojima je držano i gajeno 1319 kćeri, 13 bikova-očeva. Rezultati analize su dobijeni primenom matematičko-statističke analize podataka, korišćenjem mešovitih modela (Harvey, 1990). Matematičko-statistička analiza podataka je obavljena korišćenjem linearnih metoda sa fiksnim uticajem, preko metoda najmanjih kvadrata (LS metod) a za ocenu priplodne vrednosti bikova korišćen je mešoviti model slučajnog uticaja oca (BLUP metod).Na osnovu dobijenih rezultata ustanovljeno je da je odgajivačko područje statistički analizirano visoko značajno (**P (lt) 0.01.) prouzrokovalo odstupanja proizvodnih fenotipova od opšteg proseka. Sezona telenja i godina (*P (lt) 0.05.) su prouzrokovali značajna variranja proizvodnih osobina. Rezultati odstupanja osobina proizvodnosti pod uticajem godine telenja ukazuju na pozitivne tendencije u povećanju prinosa mleka . Značajna odstupanja (P (lt) 0.05) je izazvala godina telenja i na prinos mleka i mlečne masti. Godišnje doba početka laktacije krava obuhvaćenih našim istraživanjem pokazuje visokoznačajna odstupanja prinosa mleka i mlečne masti u odnosu na opšti prosek (P (lt) 0.01). Tako su junice oteljene u februaru , martu i aprilu imale značajno i visoko značajno više mleka i mlečne masti u odnosu na one koje su se otelile u drugim mesecima u godini. Interakcija odgajivačkog područja i sezone telenja je prouzrokovala visoko značajna odstupanja prinosa mleka (**P (lt) 0.01), međutim nije bilo statističkih značajnih variranja sadržaja mlečne masti. Prema analizi negativnih i pozitivnih BLUP rešenja (priplodne vrednosti) za prinos 4%MKM formirana je ocena ranga prema kojoj je bik broj 13. najbolje ocenjen, a bik-otac br.9 bio je rangiran na poslednje mesto. Krave - prvotelke obuhvaćene našim istraživanjem proizvele su 4868 kg mleka sa 183.03 kg mlečne masti , odnosno 3.76% mle. mast i 4693kg 4%MKM. Rezultati dobijeni nasim istraživanjima su značajno viši u odnosu na rezultate o mlečnosti iste rase (Lazarevic R. i sar., 1986). viši od onih koje je ustanovio Petrovic M.M. i sar. (1997 i 2006). Dobijeni rezultati su u saglasnosti sa onima koje su dobili Petrović M.D. i sar. (2005) i Pantelić i sar.(2008). Naši rezultati su pokazali da postoji pozitivan genetski trend u smislu kvantitaivnih osobina mlečnosti domaćih somentalskih krava. Poredeći naše rezultate i rezultate napred navedenih autora može se zaključiti da se prinos mleka simentalskih krava (matični zapat) u Srbiji godišnje uvećava za najmanje 100 kg mleka po kravi (zavisno od genetike, područja, odnosno tehnologija ishrane i držanja).
PB  - Institute for Animal Husbandry, Belgrade
T2  - Biotechnology in Animal Husbandry
T1  - Quantitative analysis of genetic improvement of milk production phenotypes in Simmental cows
T1  - Kvantitativna analiza genetskog unapređenja fenotipova mlečnosti krava Simentalske rase
VL  - 25
IS  - 1-2
SP  - 45
EP  - 51
DO  - 10.2298/BAH0902045P
ER  - 

@article{
author = "Petrović, Milan M. and Sretenović, Ljiljana and Bogdanović, Vladan and Perišić, Predrag and Aleksić, S. and Pantelić, Vlada and Petrović, Milun D. and Novaković, Željko",
year = "2009",
abstract = "Results of the effect of direct and indirect selection on quantitative properties of milk production of first calving Simmental cows in Serbia, are presented in the paper. Analysis of quantitative phenotypic parameters was carried out in four breeding regions and certain number of smaller farms where 1319 daughters of 13 bull sires were reared. Results of the analysis were obtained by application of mathematical-statistical data analysis, using mixed models (Harvey, 1990). Mathematical-statistical analysis of data was carried out using linear methods with fixed effect, through method of least squares (LS method), and for evaluation of bull breeding value mixed model of random bull sire effect was used (BLUP method). Based on obtained results it was established that analyzed breeding region has statistically highly significantly (**P (lt) 0.01.) caused deviations of production phenotypes from general average. Season and year of calving (*P (lt) 0.05.) have caused significant variations of production properties. ., U radu su prikazani rezultati efekata direktne i indirektne selekcije kvantitativnih svojstava mlečnosti krava-prvotelki simentalske rase goveda u Srbiji. Analiza kvanitativnih fenotipskih parametara je obavljena u četiri odgajivačka područja i na više desetina manjih farmi na kojima je držano i gajeno 1319 kćeri, 13 bikova-očeva. Rezultati analize su dobijeni primenom matematičko-statističke analize podataka, korišćenjem mešovitih modela (Harvey, 1990). Matematičko-statistička analiza podataka je obavljena korišćenjem linearnih metoda sa fiksnim uticajem, preko metoda najmanjih kvadrata (LS metod) a za ocenu priplodne vrednosti bikova korišćen je mešoviti model slučajnog uticaja oca (BLUP metod).Na osnovu dobijenih rezultata ustanovljeno je da je odgajivačko područje statistički analizirano visoko značajno (**P (lt) 0.01.) prouzrokovalo odstupanja proizvodnih fenotipova od opšteg proseka. Sezona telenja i godina (*P (lt) 0.05.) su prouzrokovali značajna variranja proizvodnih osobina. Rezultati odstupanja osobina proizvodnosti pod uticajem godine telenja ukazuju na pozitivne tendencije u povećanju prinosa mleka . Značajna odstupanja (P (lt) 0.05) je izazvala godina telenja i na prinos mleka i mlečne masti. Godišnje doba početka laktacije krava obuhvaćenih našim istraživanjem pokazuje visokoznačajna odstupanja prinosa mleka i mlečne masti u odnosu na opšti prosek (P (lt) 0.01). Tako su junice oteljene u februaru , martu i aprilu imale značajno i visoko značajno više mleka i mlečne masti u odnosu na one koje su se otelile u drugim mesecima u godini. Interakcija odgajivačkog područja i sezone telenja je prouzrokovala visoko značajna odstupanja prinosa mleka (**P (lt) 0.01), međutim nije bilo statističkih značajnih variranja sadržaja mlečne masti. Prema analizi negativnih i pozitivnih BLUP rešenja (priplodne vrednosti) za prinos 4%MKM formirana je ocena ranga prema kojoj je bik broj 13. najbolje ocenjen, a bik-otac br.9 bio je rangiran na poslednje mesto. Krave - prvotelke obuhvaćene našim istraživanjem proizvele su 4868 kg mleka sa 183.03 kg mlečne masti , odnosno 3.76% mle. mast i 4693kg 4%MKM. Rezultati dobijeni nasim istraživanjima su značajno viši u odnosu na rezultate o mlečnosti iste rase (Lazarevic R. i sar., 1986). viši od onih koje je ustanovio Petrovic M.M. i sar. (1997 i 2006). Dobijeni rezultati su u saglasnosti sa onima koje su dobili Petrović M.D. i sar. (2005) i Pantelić i sar.(2008). Naši rezultati su pokazali da postoji pozitivan genetski trend u smislu kvantitaivnih osobina mlečnosti domaćih somentalskih krava. Poredeći naše rezultate i rezultate napred navedenih autora može se zaključiti da se prinos mleka simentalskih krava (matični zapat) u Srbiji godišnje uvećava za najmanje 100 kg mleka po kravi (zavisno od genetike, područja, odnosno tehnologija ishrane i držanja).",
publisher = "Institute for Animal Husbandry, Belgrade",
journal = "Biotechnology in Animal Husbandry",
title = "Quantitative analysis of genetic improvement of milk production phenotypes in Simmental cows, Kvantitativna analiza genetskog unapređenja fenotipova mlečnosti krava Simentalske rase",
volume = "25",
number = "1-2",
pages = "45-51",
doi = "10.2298/BAH0902045P"
}

Petrović, M. M., Sretenović, L., Bogdanović, V., Perišić, P., Aleksić, S., Pantelić, V., Petrović, M. D.,& Novaković, Ž.. (2009). Quantitative analysis of genetic improvement of milk production phenotypes in Simmental cows. in Biotechnology in Animal Husbandry
Institute for Animal Husbandry, Belgrade., 25(1-2), 45-51.
https://doi.org/10.2298/BAH0902045P

Petrović MM, Sretenović L, Bogdanović V, Perišić P, Aleksić S, Pantelić V, Petrović MD, Novaković Ž. Quantitative analysis of genetic improvement of milk production phenotypes in Simmental cows. in Biotechnology in Animal Husbandry. 2009;25(1-2):45-51.
doi:10.2298/BAH0902045P .

Petrović, Milan M., Sretenović, Ljiljana, Bogdanović, Vladan, Perišić, Predrag, Aleksić, S., Pantelić, Vlada, Petrović, Milun D., Novaković, Željko, "Quantitative analysis of genetic improvement of milk production phenotypes in Simmental cows" in Biotechnology in Animal Husbandry, 25, no. 1-2 (2009):45-51,
https://doi.org/10.2298/BAH0902045P . .

TY  - JOUR
AU  - Petrović, Milun D.
AU  - Skalicki, Zlatko
AU  - Bogdanović, Vladan
AU  - Petrović, Milan M.
PY  - 2007
UR  - http://r.istocar.bg.ac.rs/handle/123456789/144
AB  - The examination was made on the effect of systematic factors (parturition group, calving season, birth type, calf gender, and birth type-calf gender interaction) and age at first conception on the expression of reproductive traits (gestation length, service period, fertility intensity and calf birth weight) in 143 Simmental cows. The overall mean (μ) for gestation length, service period, intercalving period and calf birth weight was 284.14 days, 153.82 days, 416.92 days and 35.40 kg, respectively. The parturition group effect on all fertility traits was highly significant (P (lt) 0.01). The calving season statistically significantly (P (lt) 0.05) affected the intercalving period and calf birth weight. Birth type induced very significantly longer gestation (P (lt) 0.01) and higher calf birth weight in singles (P (lt) 0.01) and significantly longer service period in twins (P (lt) 0.05). Calf gender had a very significant effect (P (lt) 0.01) only on calf birth weight, and the interaction between birth type and calf gender significantly affected gestation duration only (P (lt) 0.05). The regression effect of age at first conception on all fertility traits was not significant (P>0.05).
AB  - Na ispoljenost reproduktivnih osobina (dužina bremenitosti, servis period, intenzitet plodnosti i masa teladi pri rođenju) kod 143 krave simentalske rase, ispitivan je uticaj sistematskih faktora (grupe partusa, sezone telenja, tip rođenja, pol teladi i interakcija tipa rođenja i pola teladi) i uzrasta pri prvoj oplodnji. Opšti prosek (μ) za dužinu bremenitosti iznosio je 284.14 dana, servis period 153.82 dana, međutelidbeni interval 416.92 i masu teladi pri rođenju 35.40 kg. Uticaj grupe partusa na sve osobine plodnosti bio je visoko značajan (P (lt) 0.01). Sezona telenja statistički značajno (P (lt) 0.05) je uticala na međutelidbeni interval i masu teladi pri rođenju. Tip rođenja uslovio je vrlo značajno dužu bremenitost (P (lt) 0.01) i veću masu teladi pri rođenju kod jedinaca (P (lt) 0.01) i značajno duži servis period kod blizanaca (P (lt) 0.05). Pol teladi vrlo značajno je uticao (P (lt) 0.01) samo na masu teladi pri rođenju, dok je interakcija tipa rođenja i pola teladi značajno uticala samo na trajanje bremenitosti (P (lt) 0.05). Regresijski uticaj uzrasta pri prvoj oplodnji na sve osobine plodnosti nije bio signifikantan (P>0.05).
PB  - Institute for Animal Husbandry, Belgrade
T2  - Biotechnology in Animal Husbandry
T1  - The effect of paragenetic factors on reproductive traits of simmental cows
T1  - Uticaj paragenetskih faktora na reproduktivne osobine krava simentalske rase
VL  - 23
IS  - 5-6-2
SP  - 1
EP  - 8
DO  - 10.2298/BAH0702001M
ER  - 

@article{
author = "Petrović, Milun D. and Skalicki, Zlatko and Bogdanović, Vladan and Petrović, Milan M.",
year = "2007",
abstract = "The examination was made on the effect of systematic factors (parturition group, calving season, birth type, calf gender, and birth type-calf gender interaction) and age at first conception on the expression of reproductive traits (gestation length, service period, fertility intensity and calf birth weight) in 143 Simmental cows. The overall mean (μ) for gestation length, service period, intercalving period and calf birth weight was 284.14 days, 153.82 days, 416.92 days and 35.40 kg, respectively. The parturition group effect on all fertility traits was highly significant (P (lt) 0.01). The calving season statistically significantly (P (lt) 0.05) affected the intercalving period and calf birth weight. Birth type induced very significantly longer gestation (P (lt) 0.01) and higher calf birth weight in singles (P (lt) 0.01) and significantly longer service period in twins (P (lt) 0.05). Calf gender had a very significant effect (P (lt) 0.01) only on calf birth weight, and the interaction between birth type and calf gender significantly affected gestation duration only (P (lt) 0.05). The regression effect of age at first conception on all fertility traits was not significant (P>0.05)., Na ispoljenost reproduktivnih osobina (dužina bremenitosti, servis period, intenzitet plodnosti i masa teladi pri rođenju) kod 143 krave simentalske rase, ispitivan je uticaj sistematskih faktora (grupe partusa, sezone telenja, tip rođenja, pol teladi i interakcija tipa rođenja i pola teladi) i uzrasta pri prvoj oplodnji. Opšti prosek (μ) za dužinu bremenitosti iznosio je 284.14 dana, servis period 153.82 dana, međutelidbeni interval 416.92 i masu teladi pri rođenju 35.40 kg. Uticaj grupe partusa na sve osobine plodnosti bio je visoko značajan (P (lt) 0.01). Sezona telenja statistički značajno (P (lt) 0.05) je uticala na međutelidbeni interval i masu teladi pri rođenju. Tip rođenja uslovio je vrlo značajno dužu bremenitost (P (lt) 0.01) i veću masu teladi pri rođenju kod jedinaca (P (lt) 0.01) i značajno duži servis period kod blizanaca (P (lt) 0.05). Pol teladi vrlo značajno je uticao (P (lt) 0.01) samo na masu teladi pri rođenju, dok je interakcija tipa rođenja i pola teladi značajno uticala samo na trajanje bremenitosti (P (lt) 0.05). Regresijski uticaj uzrasta pri prvoj oplodnji na sve osobine plodnosti nije bio signifikantan (P>0.05).",
publisher = "Institute for Animal Husbandry, Belgrade",
journal = "Biotechnology in Animal Husbandry",
title = "The effect of paragenetic factors on reproductive traits of simmental cows, Uticaj paragenetskih faktora na reproduktivne osobine krava simentalske rase",
volume = "23",
number = "5-6-2",
pages = "1-8",
doi = "10.2298/BAH0702001M"
}

Petrović, M. D., Skalicki, Z., Bogdanović, V.,& Petrović, M. M.. (2007). The effect of paragenetic factors on reproductive traits of simmental cows. in Biotechnology in Animal Husbandry
Institute for Animal Husbandry, Belgrade., 23(5-6-2), 1-8.
https://doi.org/10.2298/BAH0702001M

Petrović MD, Skalicki Z, Bogdanović V, Petrović MM. The effect of paragenetic factors on reproductive traits of simmental cows. in Biotechnology in Animal Husbandry. 2007;23(5-6-2):1-8.
doi:10.2298/BAH0702001M .

Petrović, Milun D., Skalicki, Zlatko, Bogdanović, Vladan, Petrović, Milan M., "The effect of paragenetic factors on reproductive traits of simmental cows" in Biotechnology in Animal Husbandry, 23, no. 5-6-2 (2007):1-8,
https://doi.org/10.2298/BAH0702001M . .

TY  - CONF
AU  - Petrović, Milun D.
AU  - Petrović, Milan M.
AU  - Nenadović, G.
AU  - Kurcubic, Vladimir S.
AU  - Marinkov, Gordana
PY  - 2006
UR  - http://r.istocar.bg.ac.rs/handle/123456789/95
AB  - This paper is based on investigation of chemical and hygiene parameters of the quality of cow raw milk. Samples were collected on 10 collection spots of the dairy firm "Imlek", in 4 identical time intervals in the period of one month (20.06.2005.-20.07.2005.) in municipality of Gornji Milanovac, and research was carried out in the laboratory of "Imlek" in Čačak. Differences in chemical composition and hygienic quality of milk were analyzed, and slight variability was established between collection spots. Average content of milk fat was 3,89%, protein 3,20%, and dry matter without fat 8,56%. It was established that in regard to protein content there is significant and very significant statistical difference between collection spots. This is consequence of different nutrition, focus is on introduction of protein enriched feeds into nutrition of cows. High variability of number of micro organisms is consequence of inadequate, non-standardized obtaining (milking) and storing of raw milk. Average number of micro-organisms was 844.875/ml, and it varied from 112.000–5.000.000/ml. Average somatic cell count was 357.850/ml. Variance analysis determined that collection spots had statistically highly significant effect (P (lt) 0.01) only on protein content, whereas their influence on content of fat, dry matter without fat, number of microorganisms and somatic cell count wasn't significant (P>0.05). Individual testing (LSD test) established that milk collected from 7th collection spot had significantly higher protein content compared to other collection spots, which indicated that dairy heads of cattle consumed higher quantity of feeds rich on proteins and had better balanced diet in regard to ratio of energy and protein.
AB  - Rad je zasnovan na ispitivanju hemijskih i higijenskih parametara kvaliteta sirovog mleka. Uzimanje uzoraka je vršeno na 10 "Imlek"-ovih sabirnih mesta u 4 jednaka vremenska razmaka u periodu od mesec dana (20.06.2005.-20.07.2005.godine) u opštini Gornji Milanovac, a ispitivanje je izvršeno u laboratoriji "Imlek"-a u Čačku. Analizirane su razlike u hemijskom sastavu i higijenskom kvalitetu mleka, pri čemu su utvrđene male varijabilnosti između sabirnih mesta. Prosečan sadržaj mlečne masti iznosio je 3,89%, proteina 3,20%, a suve materije bez masti 8,56%. Utvrđeno je da kod sadržaja proteina postoji značajna i vrlo značajna statistička razlika između sabirnih mesta. To je posledica različite ishrane, pri čemu se daje akcenat na uvođenje u ishranu proteinski bogatih hraniva. Ispitivanje hemijskog sastava i mikrobiološke ispravnosti, koje je vršeno kod proizvođača AD "Imlek"-a, pokazalo je izvestan pomak u poboljšavanju higijenskog kvaliteta sirovog mleka. Visoka varijabilnost kod broja mikroorganizama posledica je neadekvatnog, nestandardizovanog dobijanja (muže) i čuvanja sirovog mleka. Prosečan broj mikroorganizama je iznosio 844.875/ml, a kretao se od 112.000-5.000.000/ml. Prosečan broj somatskih ćelija je 357.850/ml.
PB  - Institute for Animal Husbandry, Belgrade
C3  - Biotechnology in Animal Husbandry
T1  - Chemical-microbiological quality parameters of raw cow milk
T1  - Hemijski-mikrobiološki parametri kvaliteta sirovog kravljeg mleka
VL  - 22
IS  - 5-6
SP  - 109
EP  - 119
DO  - 10.2298/BAH0606109P
ER  - 

@conference{
author = "Petrović, Milun D. and Petrović, Milan M. and Nenadović, G. and Kurcubic, Vladimir S. and Marinkov, Gordana",
year = "2006",
abstract = "This paper is based on investigation of chemical and hygiene parameters of the quality of cow raw milk. Samples were collected on 10 collection spots of the dairy firm "Imlek", in 4 identical time intervals in the period of one month (20.06.2005.-20.07.2005.) in municipality of Gornji Milanovac, and research was carried out in the laboratory of "Imlek" in Čačak. Differences in chemical composition and hygienic quality of milk were analyzed, and slight variability was established between collection spots. Average content of milk fat was 3,89%, protein 3,20%, and dry matter without fat 8,56%. It was established that in regard to protein content there is significant and very significant statistical difference between collection spots. This is consequence of different nutrition, focus is on introduction of protein enriched feeds into nutrition of cows. High variability of number of micro organisms is consequence of inadequate, non-standardized obtaining (milking) and storing of raw milk. Average number of micro-organisms was 844.875/ml, and it varied from 112.000–5.000.000/ml. Average somatic cell count was 357.850/ml. Variance analysis determined that collection spots had statistically highly significant effect (P (lt) 0.01) only on protein content, whereas their influence on content of fat, dry matter without fat, number of microorganisms and somatic cell count wasn't significant (P>0.05). Individual testing (LSD test) established that milk collected from 7th collection spot had significantly higher protein content compared to other collection spots, which indicated that dairy heads of cattle consumed higher quantity of feeds rich on proteins and had better balanced diet in regard to ratio of energy and protein., Rad je zasnovan na ispitivanju hemijskih i higijenskih parametara kvaliteta sirovog mleka. Uzimanje uzoraka je vršeno na 10 "Imlek"-ovih sabirnih mesta u 4 jednaka vremenska razmaka u periodu od mesec dana (20.06.2005.-20.07.2005.godine) u opštini Gornji Milanovac, a ispitivanje je izvršeno u laboratoriji "Imlek"-a u Čačku. Analizirane su razlike u hemijskom sastavu i higijenskom kvalitetu mleka, pri čemu su utvrđene male varijabilnosti između sabirnih mesta. Prosečan sadržaj mlečne masti iznosio je 3,89%, proteina 3,20%, a suve materije bez masti 8,56%. Utvrđeno je da kod sadržaja proteina postoji značajna i vrlo značajna statistička razlika između sabirnih mesta. To je posledica različite ishrane, pri čemu se daje akcenat na uvođenje u ishranu proteinski bogatih hraniva. Ispitivanje hemijskog sastava i mikrobiološke ispravnosti, koje je vršeno kod proizvođača AD "Imlek"-a, pokazalo je izvestan pomak u poboljšavanju higijenskog kvaliteta sirovog mleka. Visoka varijabilnost kod broja mikroorganizama posledica je neadekvatnog, nestandardizovanog dobijanja (muže) i čuvanja sirovog mleka. Prosečan broj mikroorganizama je iznosio 844.875/ml, a kretao se od 112.000-5.000.000/ml. Prosečan broj somatskih ćelija je 357.850/ml.",
publisher = "Institute for Animal Husbandry, Belgrade",
journal = "Biotechnology in Animal Husbandry",
title = "Chemical-microbiological quality parameters of raw cow milk, Hemijski-mikrobiološki parametri kvaliteta sirovog kravljeg mleka",
volume = "22",
number = "5-6",
pages = "109-119",
doi = "10.2298/BAH0606109P"
}

Petrović, M. D., Petrović, M. M., Nenadović, G., Kurcubic, V. S.,& Marinkov, G.. (2006). Chemical-microbiological quality parameters of raw cow milk. in Biotechnology in Animal Husbandry
Institute for Animal Husbandry, Belgrade., 22(5-6), 109-119.
https://doi.org/10.2298/BAH0606109P

Petrović MD, Petrović MM, Nenadović G, Kurcubic VS, Marinkov G. Chemical-microbiological quality parameters of raw cow milk. in Biotechnology in Animal Husbandry. 2006;22(5-6):109-119.
doi:10.2298/BAH0606109P .

Petrović, Milun D., Petrović, Milan M., Nenadović, G., Kurcubic, Vladimir S., Marinkov, Gordana, "Chemical-microbiological quality parameters of raw cow milk" in Biotechnology in Animal Husbandry, 22, no. 5-6 (2006):109-119,
https://doi.org/10.2298/BAH0606109P . .

TY  - CONF
AU  - Petrović, Milun D.
AU  - Skalicki, Zlatko
AU  - Bogdanović, Vladan
AU  - Petrović, Milan M.
AU  - Kurcubic, Vladimir S.
PY  - 2005
UR  - http://r.istocar.bg.ac.rs/handle/123456789/75
PB  - Institute for Animal Husbandry, Belgrade
C3  - Biotechnology in Animal Husbandry
T1  - The effect of paragenetic factors on performance traits in complete lactations in Simmental cows
T1  - Uticaj paragenetskih faktora na proizvodne osobine u punim laktacijama kod krava simentalske rase
VL  - 21
IS  - 5-6-2
SP  - 7
EP  - 12
DO  - 10.2298/BAH0502007P
ER  - 

@conference{
author = "Petrović, Milun D. and Skalicki, Zlatko and Bogdanović, Vladan and Petrović, Milan M. and Kurcubic, Vladimir S.",
year = "2005",
publisher = "Institute for Animal Husbandry, Belgrade",
journal = "Biotechnology in Animal Husbandry",
title = "The effect of paragenetic factors on performance traits in complete lactations in Simmental cows, Uticaj paragenetskih faktora na proizvodne osobine u punim laktacijama kod krava simentalske rase",
volume = "21",
number = "5-6-2",
pages = "7-12",
doi = "10.2298/BAH0502007P"
}

Petrović, M. D., Skalicki, Z., Bogdanović, V., Petrović, M. M.,& Kurcubic, V. S.. (2005). The effect of paragenetic factors on performance traits in complete lactations in Simmental cows. in Biotechnology in Animal Husbandry
Institute for Animal Husbandry, Belgrade., 21(5-6-2), 7-12.
https://doi.org/10.2298/BAH0502007P

Petrović MD, Skalicki Z, Bogdanović V, Petrović MM, Kurcubic VS. The effect of paragenetic factors on performance traits in complete lactations in Simmental cows. in Biotechnology in Animal Husbandry. 2005;21(5-6-2):7-12.
doi:10.2298/BAH0502007P .

Petrović, Milun D., Skalicki, Zlatko, Bogdanović, Vladan, Petrović, Milan M., Kurcubic, Vladimir S., "The effect of paragenetic factors on performance traits in complete lactations in Simmental cows" in Biotechnology in Animal Husbandry, 21, no. 5-6-2 (2005):7-12,
https://doi.org/10.2298/BAH0502007P . .