"info:eu-repo/grantAgreement/MESTD/inst-2020/200045/RS//"

Link to this page

"info:eu-repo/grantAgreement/MESTD/inst-2020/200045/RS//"

Authors

Publications

The effect of space allowance in the cage and floor systems on feather condition and egg production

Škrbić, Zdenka; Lukić, Miloš; Petričević, Veselin; Bogosavljević-Bošković, Snežana; Rakonjac, Simeon; Dosković, Vladimir; Tolimir, Nataša

(Institute for Animal Husbandry, Belgrade, 2022)

TY  - JOUR
AU  - Škrbić, Zdenka
AU  - Lukić, Miloš
AU  - Petričević, Veselin
AU  - Bogosavljević-Bošković, Snežana
AU  - Rakonjac, Simeon
AU  - Dosković, Vladimir
AU  - Tolimir, Nataša
PY  - 2022
UR  - http://r.istocar.bg.ac.rs/handle/123456789/804
AB  - The egg production sector is in a transitional period with regard to the permitted housing systems, i.e. rearing in conventional cages under certain conditions to the complete ban of any form of cage system. The changes were caused by concern for the layer wellfare but with the expected effects on productivity as well. The aim of the research was to determine the effects of the floor space allowance in cage and non-cage housing systems on the feather score and egg production of laying hens of three ages, from the aspect of the regulated minimum and optimal space in the cage system (C) and the space provided in the extensive rearing system with hens in smaller groups in the facility (extensive indoor -EI). In order to determine the feather score, the body weight of the laying hens and the weight of the eggs, three groups of laying hens were formed: C4 (564 cm2 per hen, cage system), C3 (751 cm2 per hen, cage system) and EI ( 3000 cm2 per hen, extensive indoor). The feather score and body weight of laying hens were determined in three ages of hens (30, 40, 50 weeks), by individual assessment and measurement of all hens in the experiment. The hen-day egg production and egg weight were determined in the same weeks of laying age. In addition to the expected decrease in feather score with the age of hens, results indicated a significant interaction between age and space allowance per hen. Observed by individual body parts, as well as based on the overall feather score, the space allowance per hen exhibited a full, cumulative effect at 50 weeks of age. Based on the space allowance, it was possible to rank the overall feather score, with the laying hens with the most space having the best feather score. The effect of the space allowance on the body weight of the laying hens was manifested through the space available on the feeder, which resulted in the lowest (p<0.01) body weight values recorded in laying hens of the C4 group. Egg production was not significantly influenced by the space allowance per hen (p=0.069), but a connection between egg production and the housing system can be concluded. The average egg weight, in addition to the known effect of layer age, was the lowest (p<0.01) in the group with the least space allowance per hen.
PB  - Institute for Animal Husbandry, Belgrade
T2  - Biotechnology in Animal Husbandry
T1  - The effect of space allowance in the cage and floor systems on feather condition and egg production
VL  - 38
IS  - 2
SP  - 125
EP  - 137
DO  - 10.2298/ BAH2202125S
ER  - 
@article{
author = "Škrbić, Zdenka and Lukić, Miloš and Petričević, Veselin and Bogosavljević-Bošković, Snežana and Rakonjac, Simeon and Dosković, Vladimir and Tolimir, Nataša",
year = "2022",
abstract = "The egg production sector is in a transitional period with regard to the permitted housing systems, i.e. rearing in conventional cages under certain conditions to the complete ban of any form of cage system. The changes were caused by concern for the layer wellfare but with the expected effects on productivity as well. The aim of the research was to determine the effects of the floor space allowance in cage and non-cage housing systems on the feather score and egg production of laying hens of three ages, from the aspect of the regulated minimum and optimal space in the cage system (C) and the space provided in the extensive rearing system with hens in smaller groups in the facility (extensive indoor -EI). In order to determine the feather score, the body weight of the laying hens and the weight of the eggs, three groups of laying hens were formed: C4 (564 cm2 per hen, cage system), C3 (751 cm2 per hen, cage system) and EI ( 3000 cm2 per hen, extensive indoor). The feather score and body weight of laying hens were determined in three ages of hens (30, 40, 50 weeks), by individual assessment and measurement of all hens in the experiment. The hen-day egg production and egg weight were determined in the same weeks of laying age. In addition to the expected decrease in feather score with the age of hens, results indicated a significant interaction between age and space allowance per hen. Observed by individual body parts, as well as based on the overall feather score, the space allowance per hen exhibited a full, cumulative effect at 50 weeks of age. Based on the space allowance, it was possible to rank the overall feather score, with the laying hens with the most space having the best feather score. The effect of the space allowance on the body weight of the laying hens was manifested through the space available on the feeder, which resulted in the lowest (p<0.01) body weight values recorded in laying hens of the C4 group. Egg production was not significantly influenced by the space allowance per hen (p=0.069), but a connection between egg production and the housing system can be concluded. The average egg weight, in addition to the known effect of layer age, was the lowest (p<0.01) in the group with the least space allowance per hen.",
publisher = "Institute for Animal Husbandry, Belgrade",
journal = "Biotechnology in Animal Husbandry",
title = "The effect of space allowance in the cage and floor systems on feather condition and egg production",
volume = "38",
number = "2",
pages = "125-137",
doi = "10.2298/ BAH2202125S"
}
Škrbić, Z., Lukić, M., Petričević, V., Bogosavljević-Bošković, S., Rakonjac, S., Dosković, V.,& Tolimir, N.. (2022). The effect of space allowance in the cage and floor systems on feather condition and egg production. in Biotechnology in Animal Husbandry
Institute for Animal Husbandry, Belgrade., 38(2), 125-137.
https://doi.org/10.2298/ BAH2202125S
Škrbić Z, Lukić M, Petričević V, Bogosavljević-Bošković S, Rakonjac S, Dosković V, Tolimir N. The effect of space allowance in the cage and floor systems on feather condition and egg production. in Biotechnology in Animal Husbandry. 2022;38(2):125-137.
doi:10.2298/ BAH2202125S .
Škrbić, Zdenka, Lukić, Miloš, Petričević, Veselin, Bogosavljević-Bošković, Snežana, Rakonjac, Simeon, Dosković, Vladimir, Tolimir, Nataša, "The effect of space allowance in the cage and floor systems on feather condition and egg production" in Biotechnology in Animal Husbandry, 38, no. 2 (2022):125-137,
https://doi.org/10.2298/ BAH2202125S . .

How Does the Choice of Genotype and Feed in the Local Market Affect Broiler Performance and the Farm Economy? A Case Study in Serbia

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

(MDPI, 2022)

TY  - JOUR
AU  - Lukić, Miloš
AU  - Petričević, Veselin
AU  - Delić, Nikola
AU  - Tolimir, Nataša
AU  - Dosković, Vladimir
AU  - Rakonjac, Simeon
AU  - Škrbić, Zdenka
PY  - 2022
UR  - http://r.istocar.bg.ac.rs/handle/123456789/791
AB  - Key questions for a local broiler farm are: which broiler hybrid to rear and which industrial
feed to use? To show how farmers can manage them, a combination of biological tests and feed
characterizations of the most commonly used hybrids and broiler feeds in the local (Serbian) market was designed and performed. The hybrids Cobb 500 and Ross 308 were used, as well as feed of the same quality category from three established domestic producers (A, B, and C) available in the market. A factorial trial (2   3) was performed on a total of 1800 unsexed day-old chicks divided into six experimental treatments, with six repetitions per treatment and 50 chickens in each repetition.
Prior to and after the biological trial, the feed was characterized. The results confirm the equally
high production potential of the two tested fast-growing hybrids, the different quality of the three
industrial feeds, and that for the expression of genetic potential, each feeding and fattening period
was equally valuable. A complete picture of the tested feeds was obtained within a suitable posttest feed characterization with a farm economy included in the analysis, and the results differed in different production and market scenarios, which allows for finding the optimal feed for the local farm.
PB  - MDPI
T2  - Agriculture
T1  - How Does the Choice of Genotype and Feed in the Local Market Affect Broiler Performance and the Farm Economy? A Case Study in Serbia
VL  - 12
IS  - 6
SP  - 1
EP  - 15
DO  - 10.3390/agriculture12060843
ER  - 
@article{
author = "Lukić, Miloš and Petričević, Veselin and Delić, Nikola and Tolimir, Nataša and Dosković, Vladimir and Rakonjac, Simeon and Škrbić, Zdenka",
year = "2022",
abstract = "Key questions for a local broiler farm are: which broiler hybrid to rear and which industrial
feed to use? To show how farmers can manage them, a combination of biological tests and feed
characterizations of the most commonly used hybrids and broiler feeds in the local (Serbian) market was designed and performed. The hybrids Cobb 500 and Ross 308 were used, as well as feed of the same quality category from three established domestic producers (A, B, and C) available in the market. A factorial trial (2   3) was performed on a total of 1800 unsexed day-old chicks divided into six experimental treatments, with six repetitions per treatment and 50 chickens in each repetition.
Prior to and after the biological trial, the feed was characterized. The results confirm the equally
high production potential of the two tested fast-growing hybrids, the different quality of the three
industrial feeds, and that for the expression of genetic potential, each feeding and fattening period
was equally valuable. A complete picture of the tested feeds was obtained within a suitable posttest feed characterization with a farm economy included in the analysis, and the results differed in different production and market scenarios, which allows for finding the optimal feed for the local farm.",
publisher = "MDPI",
journal = "Agriculture",
title = "How Does the Choice of Genotype and Feed in the Local Market Affect Broiler Performance and the Farm Economy? A Case Study in Serbia",
volume = "12",
number = "6",
pages = "1-15",
doi = "10.3390/agriculture12060843"
}
Lukić, M., Petričević, V., Delić, N., Tolimir, N., Dosković, V., Rakonjac, S.,& Škrbić, Z.. (2022). How Does the Choice of Genotype and Feed in the Local Market Affect Broiler Performance and the Farm Economy? A Case Study in Serbia. in Agriculture
MDPI., 12(6), 1-15.
https://doi.org/10.3390/agriculture12060843
Lukić M, Petričević V, Delić N, Tolimir N, Dosković V, Rakonjac S, Škrbić Z. How Does the Choice of Genotype and Feed in the Local Market Affect Broiler Performance and the Farm Economy? A Case Study in Serbia. in Agriculture. 2022;12(6):1-15.
doi:10.3390/agriculture12060843 .
Lukić, Miloš, Petričević, Veselin, Delić, Nikola, Tolimir, Nataša, Dosković, Vladimir, Rakonjac, Simeon, Škrbić, Zdenka, "How Does the Choice of Genotype and Feed in the Local Market Affect Broiler Performance and the Farm Economy? A Case Study in Serbia" in Agriculture, 12, no. 6 (2022):1-15,
https://doi.org/10.3390/agriculture12060843 . .
3

The importance of eggs in the diet, consumer preferences, the production and market of table eggs in Serbia

Tolimir, Nataša; Škrbić, Zdenka; Maslovarić, Marijana; Lukić, Miloš; Milić, Dragan

(2021)

TY  - CONF
AU  - Tolimir, Nataša
AU  - Škrbić, Zdenka
AU  - Maslovarić, Marijana
AU  - Lukić, Miloš
AU  - Milić, Dragan
PY  - 2021
UR  - http://r.istocar.bg.ac.rs/handle/123456789/756
AB  - Nutrition is very important for maintaining the good health of
people at all stages of life and as such should be the subject of interest not only for
nutritionists, but also for each individual. The choice of food stuffs in the diet is
significantly influenced by habits, and in recent decades it has been noticed that
consumers are increasingly concerned about the way food is produced, its safety
and harmlessness. Although eggs, as a food, have an excellent nutritional
composition, they have had a bad reputation for decades due to the high content of
cholesterol, which was considered bad, which is why many consumers avoided
them or ate only egg whites. The results of research indicating that cholesterol in
food such as eggs has an insignificant effect on blood cholesterol have contributed
to solving the problem of cholestephobia, so that official nutrition organizations,
around year 2000, recommended the abolition of restrictions on egg consumption.
Egg consumption and method of preparation vary significantly among different
countries, which may be related to dietary traditions and consumer preferences.
During the last decades, the attitudes of consumers are gaining in importance and
are being studied in relation to the characteristics of egg quality, according to
production systems, the welfare of chickens, etc. A comprehensive view of
consumers' perceptions, their habits and understanding of the role of eggs in the
diet requires a systematic approach, at the level of the entire social community,
including education, which is especially important for younger populations. The
aim of this paper is to point out the importance of eggs in the diet, to show the
situation in the sector of table egg production in Serbia, with reference to EU
countries, including expected changes caused by changes in the legislation, which
may have far-reaching consequences for this sector, consumers and the market
situation.
C3  - Proceedings of the 13th International Symposium Modern Trends in Livestock Production, October 6 – 8, 2021, Belgrade, Serbia
T1  - The importance of eggs in the diet, consumer preferences, the production and market of table eggs in Serbia
SP  - 126
EP  - 148
UR  - https://hdl.handle.net/21.15107/rcub_ristocar_756
ER  - 
@conference{
author = "Tolimir, Nataša and Škrbić, Zdenka and Maslovarić, Marijana and Lukić, Miloš and Milić, Dragan",
year = "2021",
abstract = "Nutrition is very important for maintaining the good health of
people at all stages of life and as such should be the subject of interest not only for
nutritionists, but also for each individual. The choice of food stuffs in the diet is
significantly influenced by habits, and in recent decades it has been noticed that
consumers are increasingly concerned about the way food is produced, its safety
and harmlessness. Although eggs, as a food, have an excellent nutritional
composition, they have had a bad reputation for decades due to the high content of
cholesterol, which was considered bad, which is why many consumers avoided
them or ate only egg whites. The results of research indicating that cholesterol in
food such as eggs has an insignificant effect on blood cholesterol have contributed
to solving the problem of cholestephobia, so that official nutrition organizations,
around year 2000, recommended the abolition of restrictions on egg consumption.
Egg consumption and method of preparation vary significantly among different
countries, which may be related to dietary traditions and consumer preferences.
During the last decades, the attitudes of consumers are gaining in importance and
are being studied in relation to the characteristics of egg quality, according to
production systems, the welfare of chickens, etc. A comprehensive view of
consumers' perceptions, their habits and understanding of the role of eggs in the
diet requires a systematic approach, at the level of the entire social community,
including education, which is especially important for younger populations. The
aim of this paper is to point out the importance of eggs in the diet, to show the
situation in the sector of table egg production in Serbia, with reference to EU
countries, including expected changes caused by changes in the legislation, which
may have far-reaching consequences for this sector, consumers and the market
situation.",
journal = "Proceedings of the 13th International Symposium Modern Trends in Livestock Production, October 6 – 8, 2021, Belgrade, Serbia",
title = "The importance of eggs in the diet, consumer preferences, the production and market of table eggs in Serbia",
pages = "126-148",
url = "https://hdl.handle.net/21.15107/rcub_ristocar_756"
}
Tolimir, N., Škrbić, Z., Maslovarić, M., Lukić, M.,& Milić, D.. (2021). The importance of eggs in the diet, consumer preferences, the production and market of table eggs in Serbia. in Proceedings of the 13th International Symposium Modern Trends in Livestock Production, October 6 – 8, 2021, Belgrade, Serbia, 126-148.
https://hdl.handle.net/21.15107/rcub_ristocar_756
Tolimir N, Škrbić Z, Maslovarić M, Lukić M, Milić D. The importance of eggs in the diet, consumer preferences, the production and market of table eggs in Serbia. in Proceedings of the 13th International Symposium Modern Trends in Livestock Production, October 6 – 8, 2021, Belgrade, Serbia. 2021;:126-148.
https://hdl.handle.net/21.15107/rcub_ristocar_756 .
Tolimir, Nataša, Škrbić, Zdenka, Maslovarić, Marijana, Lukić, Miloš, Milić, Dragan, "The importance of eggs in the diet, consumer preferences, the production and market of table eggs in Serbia" in Proceedings of the 13th International Symposium Modern Trends in Livestock Production, October 6 – 8, 2021, Belgrade, Serbia (2021):126-148,
https://hdl.handle.net/21.15107/rcub_ristocar_756 .

Genotype and breeder flock age impact on broiler performance in suboptimal conditions

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

(Institute for Animal Husbandry, Belgrade, 2020)

TY  - JOUR
AU  - Lukić, Miloš
AU  - Petričević, Veselin
AU  - Škrbić, Zdenka
AU  - Delić, Nikola
AU  - Tolimir, Nataša
AU  - Dosković, Vladimir
AU  - Rakonjac, Simeon
PY  - 2020
UR  - http://r.istocar.bg.ac.rs/handle/123456789/722
AB  - A comparative study of production traits was performed between COBB 500 broilers from a 52-week-old breeder flock and a ROSS 308 from two breeder flocks of different ages (52 weeks and molted flock 79-week-old) in equal, relatively suboptimal ambiental (temperature oscillations) and nutritional conditions (market feed of average quality). The experiment was performed on a total of 720 day-old chicks of both sexes in 4 experimental groups (Cobb; Ross 52; Ross 79; Ross mix - a mixture of Ross broilers from two breeder ages), with 6 replications per group and 30 chickens in each replication. Mortality, body weight (days 0, 7, 21 and 42), weight gain, feed conversion and production index (EPEF) were monitored in 42 days of fattening. It was determined that heavier day-old chickens (p<0.01) with better gain in the first week of production, were obtained from the older breeder flock. Except in the first week, Cobb generally had the highest (p<0.05) body weights and gains in the experiment, aside from in mid and the end of the test, where did not differ significantly from the body weight of the Ross 79 and Ross mix group of broilers, respectively. Results also indicate that genetics (used hybrid) may have a greater influence on the final body weight and daily gain in suboptimal test conditions than the breeder age. Cobb 500 broilers also had significantly higher mortality under test conditions (p<0.05). Feed conversion and the achieved EPEF production index did not vary significantly in the test in chickens of different genotypes or parents. In general, suboptimal conditions in our research constrained realisation of the genetic production potential, with a suppressive effect on both hybrids, higher on the growth in Ross 308, and on the resistance measured by mortality in Cobb 500 hybrids.
PB  - Institute for Animal Husbandry, Belgrade
T2  - Biotechnology in Animal Husbandry
T1  - Genotype and breeder flock age impact on broiler performance in suboptimal conditions
VL  - 36
IS  - 4
SP  - 447
EP  - 462
DO  - 10.2298/BAH2004447L
ER  - 
@article{
author = "Lukić, Miloš and Petričević, Veselin and Škrbić, Zdenka and Delić, Nikola and Tolimir, Nataša and Dosković, Vladimir and Rakonjac, Simeon",
year = "2020",
abstract = "A comparative study of production traits was performed between COBB 500 broilers from a 52-week-old breeder flock and a ROSS 308 from two breeder flocks of different ages (52 weeks and molted flock 79-week-old) in equal, relatively suboptimal ambiental (temperature oscillations) and nutritional conditions (market feed of average quality). The experiment was performed on a total of 720 day-old chicks of both sexes in 4 experimental groups (Cobb; Ross 52; Ross 79; Ross mix - a mixture of Ross broilers from two breeder ages), with 6 replications per group and 30 chickens in each replication. Mortality, body weight (days 0, 7, 21 and 42), weight gain, feed conversion and production index (EPEF) were monitored in 42 days of fattening. It was determined that heavier day-old chickens (p<0.01) with better gain in the first week of production, were obtained from the older breeder flock. Except in the first week, Cobb generally had the highest (p<0.05) body weights and gains in the experiment, aside from in mid and the end of the test, where did not differ significantly from the body weight of the Ross 79 and Ross mix group of broilers, respectively. Results also indicate that genetics (used hybrid) may have a greater influence on the final body weight and daily gain in suboptimal test conditions than the breeder age. Cobb 500 broilers also had significantly higher mortality under test conditions (p<0.05). Feed conversion and the achieved EPEF production index did not vary significantly in the test in chickens of different genotypes or parents. In general, suboptimal conditions in our research constrained realisation of the genetic production potential, with a suppressive effect on both hybrids, higher on the growth in Ross 308, and on the resistance measured by mortality in Cobb 500 hybrids.",
publisher = "Institute for Animal Husbandry, Belgrade",
journal = "Biotechnology in Animal Husbandry",
title = "Genotype and breeder flock age impact on broiler performance in suboptimal conditions",
volume = "36",
number = "4",
pages = "447-462",
doi = "10.2298/BAH2004447L"
}
Lukić, M., Petričević, V., Škrbić, Z., Delić, N., Tolimir, N., Dosković, V.,& Rakonjac, S.. (2020). Genotype and breeder flock age impact on broiler performance in suboptimal conditions. in Biotechnology in Animal Husbandry
Institute for Animal Husbandry, Belgrade., 36(4), 447-462.
https://doi.org/10.2298/BAH2004447L
Lukić M, Petričević V, Škrbić Z, Delić N, Tolimir N, Dosković V, Rakonjac S. Genotype and breeder flock age impact on broiler performance in suboptimal conditions. in Biotechnology in Animal Husbandry. 2020;36(4):447-462.
doi:10.2298/BAH2004447L .
Lukić, Miloš, Petričević, Veselin, Škrbić, Zdenka, Delić, Nikola, Tolimir, Nataša, Dosković, Vladimir, Rakonjac, Simeon, "Genotype and breeder flock age impact on broiler performance in suboptimal conditions" in Biotechnology in Animal Husbandry, 36, no. 4 (2020):447-462,
https://doi.org/10.2298/BAH2004447L . .
7