Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 451-03-68/2020-14/200045 (Institute of Science Application in Agriculture, Belgrade)

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Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 451-03-68/2020-14/200045 (Institute of Science Application in Agriculture, Belgrade) (en)
Ministarstvo prosvete, nauke i tehnološkog razvoja Republike Srbije, Ugovor br. 451-03-68/2020-14/200045 (Institut za primenu nauke u poljoprivredi, Beograd) (sr_RS)
Министарство просвете, науке и технолошког развоја Републике Србије, Уговор бр. 451-03-68/2020-14/200045 (Институт за примену науке у пољопривреди, Београд) (sr)
Authors

Publications

Assessment of egg and eggshell quality: Insights from a three-year study on Isa Brown hybrid layers

Petričević, Veselin; Škrbić, Zdenka; Lukić, Miloš; Rakonjac, Simeon; Dosković, Vladimir; Petričević, Maja; Tolimir, Nataša

(Institute for Animal Husbandry, Belgrade-Zemun, 2023-12-18)

TY  - JOUR
AU  - Petričević, Veselin
AU  - Škrbić, Zdenka
AU  - Lukić, Miloš
AU  - Rakonjac, Simeon
AU  - Dosković, Vladimir
AU  - Petričević, Maja
AU  - Tolimir, Nataša
PY  - 2023-12-18
UR  - http://r.istocar.bg.ac.rs/handle/123456789/972
AB  - The aim of this research was to examine the influence of the year (production cycle) and laying age on the quality of eggs for consumption. Examination of certain properties of egg and shell quality was carried out over a period of three years continuously and in four evenly spaced time intervals (24, 35, 46, and 57 weeks of age). Determining the external quality of eggs included determining the weight and shape index. Examination of the internal quality of eggs included the determination of albumen height and Haugh units. At the same time, the quality of the eggshell involved the determination of the following properties: (weight, thickness, deformation, breaking force, and color of the shell). The obtained results showed that during three production cycles, the genetic progress of this hybrid was confirmed, which is primarily reflected in a statistically significantly higher (p<0.05) value of egg weight, egg white height, and Haugh's units in the third year compared to the first year examinations. Also, under the influence of this factor, statistically significantly higher values of weight and shell thickness and a darker shell color were determined in the third compared to the first year of research. No statistically significant differences were found for other examined parameters under the influence of this factor. In the presence of statistically significant influence (p<0.05), various laying ages were systematically examined for internal and external egg quality attributes alongside shell quality properties, excluding shell deformation. Egg weight increased significantly with increasing laying age, while shape index values, contrary to egg weight, decreased. The parameters of internal egg quality were worse with increasing laying age. Regarding the shell quality properties, it was found that the shell weight and thickness, similar to the egg weight, increased with the age of the layers, while the breaking force was found to be the lowest in the oldest layers. The interaction of both tested factors did not cause a statistically significant effect on tested egg quality traits.
PB  - Institute for Animal Husbandry, Belgrade-Zemun
T2  - Biotechnology in Animal Husbandry
T1  - Assessment of egg and eggshell quality: Insights from a three-year study on Isa Brown hybrid layers
VL  - 39
IS  - 2
SP  - 131
EP  - 140
DO  - 10.2298/BAH2302131P
ER  - 
@article{
author = "Petričević, Veselin and Škrbić, Zdenka and Lukić, Miloš and Rakonjac, Simeon and Dosković, Vladimir and Petričević, Maja and Tolimir, Nataša",
year = "2023-12-18",
abstract = "The aim of this research was to examine the influence of the year (production cycle) and laying age on the quality of eggs for consumption. Examination of certain properties of egg and shell quality was carried out over a period of three years continuously and in four evenly spaced time intervals (24, 35, 46, and 57 weeks of age). Determining the external quality of eggs included determining the weight and shape index. Examination of the internal quality of eggs included the determination of albumen height and Haugh units. At the same time, the quality of the eggshell involved the determination of the following properties: (weight, thickness, deformation, breaking force, and color of the shell). The obtained results showed that during three production cycles, the genetic progress of this hybrid was confirmed, which is primarily reflected in a statistically significantly higher (p<0.05) value of egg weight, egg white height, and Haugh's units in the third year compared to the first year examinations. Also, under the influence of this factor, statistically significantly higher values of weight and shell thickness and a darker shell color were determined in the third compared to the first year of research. No statistically significant differences were found for other examined parameters under the influence of this factor. In the presence of statistically significant influence (p<0.05), various laying ages were systematically examined for internal and external egg quality attributes alongside shell quality properties, excluding shell deformation. Egg weight increased significantly with increasing laying age, while shape index values, contrary to egg weight, decreased. The parameters of internal egg quality were worse with increasing laying age. Regarding the shell quality properties, it was found that the shell weight and thickness, similar to the egg weight, increased with the age of the layers, while the breaking force was found to be the lowest in the oldest layers. The interaction of both tested factors did not cause a statistically significant effect on tested egg quality traits.",
publisher = "Institute for Animal Husbandry, Belgrade-Zemun",
journal = "Biotechnology in Animal Husbandry",
title = "Assessment of egg and eggshell quality: Insights from a three-year study on Isa Brown hybrid layers",
volume = "39",
number = "2",
pages = "131-140",
doi = "10.2298/BAH2302131P"
}
Petričević, V., Škrbić, Z., Lukić, M., Rakonjac, S., Dosković, V., Petričević, M.,& Tolimir, N.. (2023-12-18). Assessment of egg and eggshell quality: Insights from a three-year study on Isa Brown hybrid layers. in Biotechnology in Animal Husbandry
Institute for Animal Husbandry, Belgrade-Zemun., 39(2), 131-140.
https://doi.org/10.2298/BAH2302131P
Petričević V, Škrbić Z, Lukić M, Rakonjac S, Dosković V, Petričević M, Tolimir N. Assessment of egg and eggshell quality: Insights from a three-year study on Isa Brown hybrid layers. in Biotechnology in Animal Husbandry. 2023;39(2):131-140.
doi:10.2298/BAH2302131P .
Petričević, Veselin, Škrbić, Zdenka, Lukić, Miloš, Rakonjac, Simeon, Dosković, Vladimir, Petričević, Maja, Tolimir, Nataša, "Assessment of egg and eggshell quality: Insights from a three-year study on Isa Brown hybrid layers" in Biotechnology in Animal Husbandry, 39, no. 2 (2023-12-18):131-140,
https://doi.org/10.2298/BAH2302131P . .

Novi tehnološki postupak produženja reproduktivnog ciklusa brojlerskih roditelja uz uvažavanje dobrobiti

Tolimir, Nataša; Milić, Dragan; Škrbić, Zdenka; Lukić, Miloš; Perić, Lidija; Petričević, Veselin; Simić, Divna

(Institute for Science Application in Agriculture, 2023)


                                            

                                            
Tolimir, N., Milić, D., Škrbić, Z., Lukić, M., Perić, L., Petričević, V.,& Simić, D.. (2023). Novi tehnološki postupak produženja reproduktivnog ciklusa brojlerskih roditelja uz uvažavanje dobrobiti. in Institute for animal husbandry
Institute for Science Application in Agriculture..
https://hdl.handle.net/21.15107/rcub_ristocar_987
Tolimir N, Milić D, Škrbić Z, Lukić M, Perić L, Petričević V, Simić D. Novi tehnološki postupak produženja reproduktivnog ciklusa brojlerskih roditelja uz uvažavanje dobrobiti. in Institute for animal husbandry. 2023;.
https://hdl.handle.net/21.15107/rcub_ristocar_987 .
Tolimir, Nataša, Milić, Dragan, Škrbić, Zdenka, Lukić, Miloš, Perić, Lidija, Petričević, Veselin, Simić, Divna, "Novi tehnološki postupak produženja reproduktivnog ciklusa brojlerskih roditelja uz uvažavanje dobrobiti" in Institute for animal husbandry (2023),
https://hdl.handle.net/21.15107/rcub_ristocar_987 .

Eggs from different housing systems and production programs on the market of the city of Belgrade

Tolimir, Nataša; Maslovarić, Marijana; Škrbić, Zdenka; Lukić, Miloš; Nedeljković-Trailović, Jelena

(Institut za stočarstvo, 2023)

TY  - CONF
AU  - Tolimir, Nataša
AU  - Maslovarić, Marijana
AU  - Škrbić, Zdenka
AU  - Lukić, Miloš
AU  - Nedeljković-Trailović, Jelena
PY  - 2023
UR  - http://r.istocar.bg.ac.rs/handle/123456789/913
AB  - In the year when the already extended deadline for egg producers in Serbia to shift from cage
farming to hen housing systems expires, the aim of the study was to analyse the egg market in Belgrade, as the largest market in Serbia. The representation of eggs from different housing systems and production programs in 11 supermarkets, covering the majority of retail chains in Serbia, was examined. In addition, the survey of 247 consumers was conducted in order to determine their views on the housing system and the price of eggs. Results showed the presence of 9 egg producers on Belgrade market, 8 of which provided eggs from the cage system, 5 from the floor system, while 4 offered free-range eggs. Cage eggs were represented in all supermarkets (11), floor eggs in 9 supermarkets, free-range eggs in 6, eggs from the functional food program (ꞷ-3 enriched) in 7, and organic eggs in one supermarket. The analysis of the prices of eggs in
different supermarkets, showed that the price per egg from the cage system, for a package of 10 eggs, varied between 0.13 and 0.21 EUR for Grade M, and between 0.14 and 0.25 EUR for Grade L eggs. The price for floor eggs (Grade M) ranged between 0.17 and 0.25, free-range eggs 0.20 and 0.28, ꞷ-3 eggs 0.26 and 0.32 EUR, while it was 0.55 EUR for organic eggs. By comparing the average price of Grade M cage eggs (0.18 EUR), with eggs from other housing systems and production programs, it was found that the price of floor eggs was 25% higher, free-range eggs 41% higher, ꞷ-3 eggs 56% higher and eggs from organic production 206% higher, respectively. Housing system and the price of eggs, as factors affecting decision when purchasing eggs, were not important for 35.19%, and 34.07% of respondents in the survey, respectively. It can be concluded that eggs from the cage system are still the most represented in Belgrade supermarket, but, compared to the similar research from 2017, the supply of eggs from the floor and free-range housing systems has increased. This indicates that the changes in the regulation influenced the transition of egg producers to permitted housing systems. Supply of ꞷ-3 eggs is satisfactory, while other types of designer eggs are lacking. The supply of organic eggs in supermarkets is insufficient.
PB  - Institut za stočarstvo
C3  - 14th International symposium “Modern trends in livestock production”, 4-6 October, Belgrade, Serbia, Book of abstracts
T1  - Eggs from different housing systems and production programs on the market of the city of Belgrade
SP  - 69
EP  - 69
UR  - https://hdl.handle.net/21.15107/rcub_ristocar_913
ER  - 
@conference{
author = "Tolimir, Nataša and Maslovarić, Marijana and Škrbić, Zdenka and Lukić, Miloš and Nedeljković-Trailović, Jelena",
year = "2023",
abstract = "In the year when the already extended deadline for egg producers in Serbia to shift from cage
farming to hen housing systems expires, the aim of the study was to analyse the egg market in Belgrade, as the largest market in Serbia. The representation of eggs from different housing systems and production programs in 11 supermarkets, covering the majority of retail chains in Serbia, was examined. In addition, the survey of 247 consumers was conducted in order to determine their views on the housing system and the price of eggs. Results showed the presence of 9 egg producers on Belgrade market, 8 of which provided eggs from the cage system, 5 from the floor system, while 4 offered free-range eggs. Cage eggs were represented in all supermarkets (11), floor eggs in 9 supermarkets, free-range eggs in 6, eggs from the functional food program (ꞷ-3 enriched) in 7, and organic eggs in one supermarket. The analysis of the prices of eggs in
different supermarkets, showed that the price per egg from the cage system, for a package of 10 eggs, varied between 0.13 and 0.21 EUR for Grade M, and between 0.14 and 0.25 EUR for Grade L eggs. The price for floor eggs (Grade M) ranged between 0.17 and 0.25, free-range eggs 0.20 and 0.28, ꞷ-3 eggs 0.26 and 0.32 EUR, while it was 0.55 EUR for organic eggs. By comparing the average price of Grade M cage eggs (0.18 EUR), with eggs from other housing systems and production programs, it was found that the price of floor eggs was 25% higher, free-range eggs 41% higher, ꞷ-3 eggs 56% higher and eggs from organic production 206% higher, respectively. Housing system and the price of eggs, as factors affecting decision when purchasing eggs, were not important for 35.19%, and 34.07% of respondents in the survey, respectively. It can be concluded that eggs from the cage system are still the most represented in Belgrade supermarket, but, compared to the similar research from 2017, the supply of eggs from the floor and free-range housing systems has increased. This indicates that the changes in the regulation influenced the transition of egg producers to permitted housing systems. Supply of ꞷ-3 eggs is satisfactory, while other types of designer eggs are lacking. The supply of organic eggs in supermarkets is insufficient.",
publisher = "Institut za stočarstvo",
journal = "14th International symposium “Modern trends in livestock production”, 4-6 October, Belgrade, Serbia, Book of abstracts",
title = "Eggs from different housing systems and production programs on the market of the city of Belgrade",
pages = "69-69",
url = "https://hdl.handle.net/21.15107/rcub_ristocar_913"
}
Tolimir, N., Maslovarić, M., Škrbić, Z., Lukić, M.,& Nedeljković-Trailović, J.. (2023). Eggs from different housing systems and production programs on the market of the city of Belgrade. in 14th International symposium “Modern trends in livestock production”, 4-6 October, Belgrade, Serbia, Book of abstracts
Institut za stočarstvo., 69-69.
https://hdl.handle.net/21.15107/rcub_ristocar_913
Tolimir N, Maslovarić M, Škrbić Z, Lukić M, Nedeljković-Trailović J. Eggs from different housing systems and production programs on the market of the city of Belgrade. in 14th International symposium “Modern trends in livestock production”, 4-6 October, Belgrade, Serbia, Book of abstracts. 2023;:69-69.
https://hdl.handle.net/21.15107/rcub_ristocar_913 .
Tolimir, Nataša, Maslovarić, Marijana, Škrbić, Zdenka, Lukić, Miloš, Nedeljković-Trailović, Jelena, "Eggs from different housing systems and production programs on the market of the city of Belgrade" in 14th International symposium “Modern trends in livestock production”, 4-6 October, Belgrade, Serbia, Book of abstracts (2023):69-69,
https://hdl.handle.net/21.15107/rcub_ristocar_913 .

Quality of eggs from Banat naked neck and ISA brown layers during storage

Škrbić, Zdenka; Lukić, Miloš; Petričević, Veselin; Rakonjac, Simeon; Dosković, Vladimir; Tolimir, Nataša; Milenković, Danijel

(Institut za stočarstvo, 2023)

TY  - CONF
AU  - Škrbić, Zdenka
AU  - Lukić, Miloš
AU  - Petričević, Veselin
AU  - Rakonjac, Simeon
AU  - Dosković, Vladimir
AU  - Tolimir, Nataša
AU  - Milenković, Danijel
PY  - 2023
UR  - http://r.istocar.bg.ac.rs/handle/123456789/911
AB  - The genotype of the hens, as well as the production system and the diet of the hens, determine the quality of the eggs that are best at the moment of oviposition. In addition to the initial quality of the eggs, the duration and conditions of storage are factors that determine the quality of the eggs that reach the consumer. The aim of the work was to determine the sustainability of the egg quality of the native Banat Naked Neck (BNN) hens and to compare it with the eggs of the ISA Brown (ISA) hybrid laying hens under the same conditions of production and storage. The eggs were stored in a refrigerator at a temperature of 8℃ for 2 or 4 weeks, and in accordance with the Rulebook on Egg Quality (2019). Eggs were sampled in 3 repetitions, and two groups were formed: storage time 2 weeks (ST2) and storage time 4 weeks (ST4) each with 90 eggs, i.e.
45 eggs per genotype and duration of storage. The analysis of the initial quality of BNN and ISA eggs showed differences (p<0.01) in the ratio of egg structural parts, that is, yolk and white, which were maintained throughout the entire storage period. The eggs of BNN had a higher share of egg yolk and a lower share of albumen compared to the eggs of ISA layers. Egg weight of BNN and ISA layers did not initially differ and was 62.06 g and 62.78 g, respectively. However, egg weight loss during the storage period was lower (p<0.01) in BNN (1.20% after 2 weeks and 2.66% after 4 weeks) compared to ISA eggs (1.98% after 2 weeks and 4.24% after 4 weeks). Albumen height and Haugh Units (HU) showed higher values initially and after two weeks of storage (p<0.01) in ISA laying eggs. After four weeks of storage, there were no significant (p>0.05) differences between eggs of BNN and ISA layers in terms of albumen height and HU. In accordance with the mentioned parameters of egg freshness, the pH value of the albumen was higher (p<0.01) in BNN hens after two weeks of egg storage. After four weeks of storage, these processes were more moderate and the determined differences between the eggs of BNN and ISA layers were at a lower
level of significance (p<0.05). In conclusion, BNN eggs during the storage period have more moderate processes of loss of freshness and egg weight compared to eggs of ISA layers, which after four weeks of storage brings them into an equal relationship in terms of quality, although the initial quality of eggs of ISA layers was better.
PB  - Institut za stočarstvo
C3  - 14th International symposium “Modern trends in livestock production”, 4-6 October, Belgrade, Serbia, Book of abstracts
T1  - Quality of eggs from Banat naked neck and ISA brown layers during storage
SP  - 70
EP  - 70
UR  - https://hdl.handle.net/21.15107/rcub_ristocar_911
ER  - 
@conference{
author = "Škrbić, Zdenka and Lukić, Miloš and Petričević, Veselin and Rakonjac, Simeon and Dosković, Vladimir and Tolimir, Nataša and Milenković, Danijel",
year = "2023",
abstract = "The genotype of the hens, as well as the production system and the diet of the hens, determine the quality of the eggs that are best at the moment of oviposition. In addition to the initial quality of the eggs, the duration and conditions of storage are factors that determine the quality of the eggs that reach the consumer. The aim of the work was to determine the sustainability of the egg quality of the native Banat Naked Neck (BNN) hens and to compare it with the eggs of the ISA Brown (ISA) hybrid laying hens under the same conditions of production and storage. The eggs were stored in a refrigerator at a temperature of 8℃ for 2 or 4 weeks, and in accordance with the Rulebook on Egg Quality (2019). Eggs were sampled in 3 repetitions, and two groups were formed: storage time 2 weeks (ST2) and storage time 4 weeks (ST4) each with 90 eggs, i.e.
45 eggs per genotype and duration of storage. The analysis of the initial quality of BNN and ISA eggs showed differences (p<0.01) in the ratio of egg structural parts, that is, yolk and white, which were maintained throughout the entire storage period. The eggs of BNN had a higher share of egg yolk and a lower share of albumen compared to the eggs of ISA layers. Egg weight of BNN and ISA layers did not initially differ and was 62.06 g and 62.78 g, respectively. However, egg weight loss during the storage period was lower (p<0.01) in BNN (1.20% after 2 weeks and 2.66% after 4 weeks) compared to ISA eggs (1.98% after 2 weeks and 4.24% after 4 weeks). Albumen height and Haugh Units (HU) showed higher values initially and after two weeks of storage (p<0.01) in ISA laying eggs. After four weeks of storage, there were no significant (p>0.05) differences between eggs of BNN and ISA layers in terms of albumen height and HU. In accordance with the mentioned parameters of egg freshness, the pH value of the albumen was higher (p<0.01) in BNN hens after two weeks of egg storage. After four weeks of storage, these processes were more moderate and the determined differences between the eggs of BNN and ISA layers were at a lower
level of significance (p<0.05). In conclusion, BNN eggs during the storage period have more moderate processes of loss of freshness and egg weight compared to eggs of ISA layers, which after four weeks of storage brings them into an equal relationship in terms of quality, although the initial quality of eggs of ISA layers was better.",
publisher = "Institut za stočarstvo",
journal = "14th International symposium “Modern trends in livestock production”, 4-6 October, Belgrade, Serbia, Book of abstracts",
title = "Quality of eggs from Banat naked neck and ISA brown layers during storage",
pages = "70-70",
url = "https://hdl.handle.net/21.15107/rcub_ristocar_911"
}
Škrbić, Z., Lukić, M., Petričević, V., Rakonjac, S., Dosković, V., Tolimir, N.,& Milenković, D.. (2023). Quality of eggs from Banat naked neck and ISA brown layers during storage. in 14th International symposium “Modern trends in livestock production”, 4-6 October, Belgrade, Serbia, Book of abstracts
Institut za stočarstvo., 70-70.
https://hdl.handle.net/21.15107/rcub_ristocar_911
Škrbić Z, Lukić M, Petričević V, Rakonjac S, Dosković V, Tolimir N, Milenković D. Quality of eggs from Banat naked neck and ISA brown layers during storage. in 14th International symposium “Modern trends in livestock production”, 4-6 October, Belgrade, Serbia, Book of abstracts. 2023;:70-70.
https://hdl.handle.net/21.15107/rcub_ristocar_911 .
Škrbić, Zdenka, Lukić, Miloš, Petričević, Veselin, Rakonjac, Simeon, Dosković, Vladimir, Tolimir, Nataša, Milenković, Danijel, "Quality of eggs from Banat naked neck and ISA brown layers during storage" in 14th International symposium “Modern trends in livestock production”, 4-6 October, Belgrade, Serbia, Book of abstracts (2023):70-70,
https://hdl.handle.net/21.15107/rcub_ristocar_911 .

Model multifaznog starter perioda u ishrani brojlera - sa tehnološkim postupkom dobijanja smeša (tehničko rešenje)

Tolimir, Nataša; Perić, Lidija; Škrbić, Zdenka; Jovanović, Rade; Maslovarić, Marijana; Lukić, Miloš; Milić, Dragan

(2022)

TY  - GEN
AU  - Tolimir, Nataša
AU  - Perić, Lidija
AU  - Škrbić, Zdenka
AU  - Jovanović, Rade
AU  - Maslovarić, Marijana
AU  - Lukić, Miloš
AU  - Milić, Dragan
PY  - 2022
UR  - http://r.istocar.bg.ac.rs/handle/123456789/864
AB  - Ishrana brojlera je jedan od najznačajnijih uslova za ispoljavnje genetskog potencijala savremenih hibrida, a u ukupnim troškovima proizvodnje čini oko 70 %. U proizvodnim uslovima, kod nas i u svetu, najčešće primenjivan koncept ishrane brojlera je sa tri do pet potpunih krmnih smeša. NCR 1994 (National Research Council, USA) za ishranu brojlera definiše potrebe za tri fiksna perioda: starter (1-3 nedelje), grover (3-6 nedelja) i finišer (6-8 nedelja). Rezultati istraživanja ukazuju da pri ishrani sa tri ili četiri smeše, potrebe brojlera u pojedinim fazama tova nisu usaglašene sa nutritivnim sastavom smeša. Posledice pothranjenosti/prehranjenosti brojlera istovremeno predstavljaju ekonomski i ekološki problem u proizvodnji pilećeg mesa. Nedostatak proteina u starter periodu rezultira izostankom osnove za optimalan rast, dok višak proteina u finišer periodu dovodi, sa jedne strane do povećanja troškova proizvodnje usled ishrane smešama višeg nivoa proteina, koje imaju višu cenu, pri čemu za njima nema realne potrebe, a sa druge strane, do ekološkog problema usled povećanja ekskrecije azota u fecesu, koji potiče iz viška proteina u hrani. U rešavanju problema neprecizne ishrane primenjuju se različiti programi multifazne ishrane, pri čemu su jedni sa fokusom na ekonomičnost, pojedini na očuvanju životne sredine, dok pojedini programi imaju za cilj jedno i drugo i zasnivaju se na konceptu sniženog sadržaja proteina do nivoa kojim se ne ugrožavaju proizvodne performanse brojlera, a ostvaruje se smanjenje ekskrecije azota.
Inovacija novog modela multifazne ishrane brojlera zasniva se na definisanom programu ishrane za provenijencu Ross 308, za tov pilića po polovima, sa ukupno devet smeša, uključujući i tehnološki postupak njihovog dobijanja.
T2  - Tehničko rešenje
T1  - Model multifaznog starter perioda u ishrani brojlera - sa tehnološkim postupkom dobijanja smeša (tehničko rešenje)
UR  - https://hdl.handle.net/21.15107/rcub_ristocar_864
ER  - 
@misc{
author = "Tolimir, Nataša and Perić, Lidija and Škrbić, Zdenka and Jovanović, Rade and Maslovarić, Marijana and Lukić, Miloš and Milić, Dragan",
year = "2022",
abstract = "Ishrana brojlera je jedan od najznačajnijih uslova za ispoljavnje genetskog potencijala savremenih hibrida, a u ukupnim troškovima proizvodnje čini oko 70 %. U proizvodnim uslovima, kod nas i u svetu, najčešće primenjivan koncept ishrane brojlera je sa tri do pet potpunih krmnih smeša. NCR 1994 (National Research Council, USA) za ishranu brojlera definiše potrebe za tri fiksna perioda: starter (1-3 nedelje), grover (3-6 nedelja) i finišer (6-8 nedelja). Rezultati istraživanja ukazuju da pri ishrani sa tri ili četiri smeše, potrebe brojlera u pojedinim fazama tova nisu usaglašene sa nutritivnim sastavom smeša. Posledice pothranjenosti/prehranjenosti brojlera istovremeno predstavljaju ekonomski i ekološki problem u proizvodnji pilećeg mesa. Nedostatak proteina u starter periodu rezultira izostankom osnove za optimalan rast, dok višak proteina u finišer periodu dovodi, sa jedne strane do povećanja troškova proizvodnje usled ishrane smešama višeg nivoa proteina, koje imaju višu cenu, pri čemu za njima nema realne potrebe, a sa druge strane, do ekološkog problema usled povećanja ekskrecije azota u fecesu, koji potiče iz viška proteina u hrani. U rešavanju problema neprecizne ishrane primenjuju se različiti programi multifazne ishrane, pri čemu su jedni sa fokusom na ekonomičnost, pojedini na očuvanju životne sredine, dok pojedini programi imaju za cilj jedno i drugo i zasnivaju se na konceptu sniženog sadržaja proteina do nivoa kojim se ne ugrožavaju proizvodne performanse brojlera, a ostvaruje se smanjenje ekskrecije azota.
Inovacija novog modela multifazne ishrane brojlera zasniva se na definisanom programu ishrane za provenijencu Ross 308, za tov pilića po polovima, sa ukupno devet smeša, uključujući i tehnološki postupak njihovog dobijanja.",
journal = "Tehničko rešenje",
title = "Model multifaznog starter perioda u ishrani brojlera - sa tehnološkim postupkom dobijanja smeša (tehničko rešenje)",
url = "https://hdl.handle.net/21.15107/rcub_ristocar_864"
}
Tolimir, N., Perić, L., Škrbić, Z., Jovanović, R., Maslovarić, M., Lukić, M.,& Milić, D.. (2022). Model multifaznog starter perioda u ishrani brojlera - sa tehnološkim postupkom dobijanja smeša (tehničko rešenje). in Tehničko rešenje.
https://hdl.handle.net/21.15107/rcub_ristocar_864
Tolimir N, Perić L, Škrbić Z, Jovanović R, Maslovarić M, Lukić M, Milić D. Model multifaznog starter perioda u ishrani brojlera - sa tehnološkim postupkom dobijanja smeša (tehničko rešenje). in Tehničko rešenje. 2022;.
https://hdl.handle.net/21.15107/rcub_ristocar_864 .
Tolimir, Nataša, Perić, Lidija, Škrbić, Zdenka, Jovanović, Rade, Maslovarić, Marijana, Lukić, Miloš, Milić, Dragan, "Model multifaznog starter perioda u ishrani brojlera - sa tehnološkim postupkom dobijanja smeša (tehničko rešenje)" in Tehničko rešenje (2022),
https://hdl.handle.net/21.15107/rcub_ristocar_864 .

Attitudes of Serbian producers and consumers of table eggs on the ban on conventional batteries and the transition to enriched cages and alternative production systems

Tolimir, Nataša; Maslovarić, Marijana; Škrbić, Zdenka; Lukić, Miloš; Budimović, Nenad; Milić, Dragan; Radišić, Robert

(Institute for Animal Husbandry, Belgrade, 2020)

TY  - JOUR
AU  - Tolimir, Nataša
AU  - Maslovarić, Marijana
AU  - Škrbić, Zdenka
AU  - Lukić, Miloš
AU  - Budimović, Nenad
AU  - Milić, Dragan
AU  - Radišić, Robert
PY  - 2020
UR  - http://r.istocar.bg.ac.rs/handle/123456789/723
AB  - The aim of the survey was to determine how the egg production sector is complying with animal welfare legislation, which requires a ban on conventional cages and the transition to permitted systems for rearing laying hens - enriched cages and alternative systems, as well as the attitudes of egg producers and consumers on the impact of permitted systems of egg production/purchase and hen welfare. The survey included producers (50), with 1000 and more hens, where in the sample, the percentage share of producers was according to the capacity - the size of the farm, i.e. similar to the share in the total egg production in Serbia. A consumer survey (261) established their views on the impact of the welfare of layers and the rearing system when buying eggs. According to the test results, it can be stated that: when switching to permitted rearing systems, enriched cages were the choice of all surveyed producers (100%) and that in the transition period from 2014 to autumn 2020, 16.3% of respondents switched from conventional cages to enriched ones (2.04% in full and 14.29% in part). According to the results obtained, 80.49% of them are planning to switch from a conventional cage system to another rearing system, of which 60.98% said they would do so if they had the financial means, while about 19% of producers believe they will be forced to leave production. All producers expect that the transition to enriched cages will lead to a reduction in their production, and 83.33% of them believe that it will be from 20 to 40%. Surveyed producers (87.18%) expect that the transition from conventional cages will increase production costs, and 65.11% believe that this will not affect
Nataša Tolimir et al.
464
the welfare of layers. A survey of consumer attitudes found that when buying eggs, the production system was very important for 19.91% of consumers, and for 19.41% of consumers it was not important at all, while the welfare of layers was very important for 26.84% and not at all important for 10.32% of consumers. The conclusion of the research is that in Serbia the transition to permitted rearing systems is slow, that harmonization with legal regulations is a great challenge and that changes are expected in the coming period that may have far-reaching consequences for the sector of table egg production.
PB  - Institute for Animal Husbandry, Belgrade
T2  - Biotechnology in Animal Husbandry
T1  - Attitudes of Serbian producers and consumers of table eggs on the ban on conventional batteries and the transition to enriched cages and alternative production systems
VL  - 36
IS  - 4
SP  - 463
EP  - 476
DO  - 10.2298/BAH2004463T
ER  - 
@article{
author = "Tolimir, Nataša and Maslovarić, Marijana and Škrbić, Zdenka and Lukić, Miloš and Budimović, Nenad and Milić, Dragan and Radišić, Robert",
year = "2020",
abstract = "The aim of the survey was to determine how the egg production sector is complying with animal welfare legislation, which requires a ban on conventional cages and the transition to permitted systems for rearing laying hens - enriched cages and alternative systems, as well as the attitudes of egg producers and consumers on the impact of permitted systems of egg production/purchase and hen welfare. The survey included producers (50), with 1000 and more hens, where in the sample, the percentage share of producers was according to the capacity - the size of the farm, i.e. similar to the share in the total egg production in Serbia. A consumer survey (261) established their views on the impact of the welfare of layers and the rearing system when buying eggs. According to the test results, it can be stated that: when switching to permitted rearing systems, enriched cages were the choice of all surveyed producers (100%) and that in the transition period from 2014 to autumn 2020, 16.3% of respondents switched from conventional cages to enriched ones (2.04% in full and 14.29% in part). According to the results obtained, 80.49% of them are planning to switch from a conventional cage system to another rearing system, of which 60.98% said they would do so if they had the financial means, while about 19% of producers believe they will be forced to leave production. All producers expect that the transition to enriched cages will lead to a reduction in their production, and 83.33% of them believe that it will be from 20 to 40%. Surveyed producers (87.18%) expect that the transition from conventional cages will increase production costs, and 65.11% believe that this will not affect
Nataša Tolimir et al.
464
the welfare of layers. A survey of consumer attitudes found that when buying eggs, the production system was very important for 19.91% of consumers, and for 19.41% of consumers it was not important at all, while the welfare of layers was very important for 26.84% and not at all important for 10.32% of consumers. The conclusion of the research is that in Serbia the transition to permitted rearing systems is slow, that harmonization with legal regulations is a great challenge and that changes are expected in the coming period that may have far-reaching consequences for the sector of table egg production.",
publisher = "Institute for Animal Husbandry, Belgrade",
journal = "Biotechnology in Animal Husbandry",
title = "Attitudes of Serbian producers and consumers of table eggs on the ban on conventional batteries and the transition to enriched cages and alternative production systems",
volume = "36",
number = "4",
pages = "463-476",
doi = "10.2298/BAH2004463T"
}
Tolimir, N., Maslovarić, M., Škrbić, Z., Lukić, M., Budimović, N., Milić, D.,& Radišić, R.. (2020). Attitudes of Serbian producers and consumers of table eggs on the ban on conventional batteries and the transition to enriched cages and alternative production systems. in Biotechnology in Animal Husbandry
Institute for Animal Husbandry, Belgrade., 36(4), 463-476.
https://doi.org/10.2298/BAH2004463T
Tolimir N, Maslovarić M, Škrbić Z, Lukić M, Budimović N, Milić D, Radišić R. Attitudes of Serbian producers and consumers of table eggs on the ban on conventional batteries and the transition to enriched cages and alternative production systems. in Biotechnology in Animal Husbandry. 2020;36(4):463-476.
doi:10.2298/BAH2004463T .
Tolimir, Nataša, Maslovarić, Marijana, Škrbić, Zdenka, Lukić, Miloš, Budimović, Nenad, Milić, Dragan, Radišić, Robert, "Attitudes of Serbian producers and consumers of table eggs on the ban on conventional batteries and the transition to enriched cages and alternative production systems" in Biotechnology in Animal Husbandry, 36, no. 4 (2020):463-476,
https://doi.org/10.2298/BAH2004463T . .