EFFECTS OF PROTEASE, DURATION OF FATTENING PERIOD AND SEX OF BROILERS ON CARCASS CONFORMATION MEASURES
Authors
Dosković, Vladimir
Bogosavljević-Bošković, Snežana

Škrbić, Zdenka

Milošević, Božidar

Lukić, Miloš

Rakonjac, Simeon

Petričević, Veselin

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This study analyses the effect of different protein levels in broiler feeds (supplemented with
protease), different lengths of fattening period and sex on body conformation in fast-growing
Cobb 500 broilers. Complete feeds for broilers in experimental groups E-I and E-II contained 4
and 6% less crude protein than the control (C) and were supplemented with protease (Ronozyme
Pro Act) at a concentration of 200mg/kg feed and 300mg/kg feed respectively. At 49 and 63 days
of age, 10 male and 10 female broilers were randomly selected from each experimental group and
slaughtered. Body conformation measurement included absolute carcass conformation measures
(metatarsus length, keel length, breast depth, breast angle, thigh girth) and relative body
conformation measures - conformation indices (body weight/metatarsus length, body weight/keel
length, body weight/breast depth, body weight/thigh girth). The results showed that dietary
treatment did not affect conformation measures, as wel...l as that the time of slaughter and sex of
chickens had a significant effect on the examined carcass quality parameters. Namely, the length
of the fattening period affected all conformation indices, as well as some absolute measures of
carcass conformation - metatarsus length, keel length and thigh girth, while sex had a significant
effect on the values of the all absolute values of carcass conformation (except for breast angle)
and indices body weight/keel length and body weight/breast depth.
Keywords:
broilers / body conformation / feeds / lengths of fattening period / sexSource:
Book of Proceedings of the XIII International Scientific Agricultural Symposium „Agrosym 2022“, Jahorina, October 6-9, 2022, Bosnia and Herzegovina, 2022, 1050-1056Funding / projects:
- "info:eu-repo/grantAgreement/MESTD/inst-2020/200088/RS// (RS-200088)
- "info:eu-repo/grantAgreement/MESTD/inst-2020/200022/RS//" (RS-200022)
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RIStocarTY - CONF AU - Dosković, Vladimir AU - Bogosavljević-Bošković, Snežana AU - Škrbić, Zdenka AU - Milošević, Božidar AU - Lukić, Miloš AU - Rakonjac, Simeon AU - Petričević, Veselin PY - 2022 UR - http://r.istocar.bg.ac.rs/handle/123456789/809 AB - This study analyses the effect of different protein levels in broiler feeds (supplemented with protease), different lengths of fattening period and sex on body conformation in fast-growing Cobb 500 broilers. Complete feeds for broilers in experimental groups E-I and E-II contained 4 and 6% less crude protein than the control (C) and were supplemented with protease (Ronozyme Pro Act) at a concentration of 200mg/kg feed and 300mg/kg feed respectively. At 49 and 63 days of age, 10 male and 10 female broilers were randomly selected from each experimental group and slaughtered. Body conformation measurement included absolute carcass conformation measures (metatarsus length, keel length, breast depth, breast angle, thigh girth) and relative body conformation measures - conformation indices (body weight/metatarsus length, body weight/keel length, body weight/breast depth, body weight/thigh girth). The results showed that dietary treatment did not affect conformation measures, as well as that the time of slaughter and sex of chickens had a significant effect on the examined carcass quality parameters. Namely, the length of the fattening period affected all conformation indices, as well as some absolute measures of carcass conformation - metatarsus length, keel length and thigh girth, while sex had a significant effect on the values of the all absolute values of carcass conformation (except for breast angle) and indices body weight/keel length and body weight/breast depth. C3 - Book of Proceedings of the XIII International Scientific Agricultural Symposium „Agrosym 2022“, Jahorina, October 6-9, 2022, Bosnia and Herzegovina T1 - EFFECTS OF PROTEASE, DURATION OF FATTENING PERIOD AND SEX OF BROILERS ON CARCASS CONFORMATION MEASURES SP - 1050 EP - 1056 UR - https://hdl.handle.net/21.15107/rcub_ristocar_809 ER -
@conference{ author = "Dosković, Vladimir and Bogosavljević-Bošković, Snežana and Škrbić, Zdenka and Milošević, Božidar and Lukić, Miloš and Rakonjac, Simeon and Petričević, Veselin", year = "2022", abstract = "This study analyses the effect of different protein levels in broiler feeds (supplemented with protease), different lengths of fattening period and sex on body conformation in fast-growing Cobb 500 broilers. Complete feeds for broilers in experimental groups E-I and E-II contained 4 and 6% less crude protein than the control (C) and were supplemented with protease (Ronozyme Pro Act) at a concentration of 200mg/kg feed and 300mg/kg feed respectively. At 49 and 63 days of age, 10 male and 10 female broilers were randomly selected from each experimental group and slaughtered. Body conformation measurement included absolute carcass conformation measures (metatarsus length, keel length, breast depth, breast angle, thigh girth) and relative body conformation measures - conformation indices (body weight/metatarsus length, body weight/keel length, body weight/breast depth, body weight/thigh girth). The results showed that dietary treatment did not affect conformation measures, as well as that the time of slaughter and sex of chickens had a significant effect on the examined carcass quality parameters. Namely, the length of the fattening period affected all conformation indices, as well as some absolute measures of carcass conformation - metatarsus length, keel length and thigh girth, while sex had a significant effect on the values of the all absolute values of carcass conformation (except for breast angle) and indices body weight/keel length and body weight/breast depth.", journal = "Book of Proceedings of the XIII International Scientific Agricultural Symposium „Agrosym 2022“, Jahorina, October 6-9, 2022, Bosnia and Herzegovina", title = "EFFECTS OF PROTEASE, DURATION OF FATTENING PERIOD AND SEX OF BROILERS ON CARCASS CONFORMATION MEASURES", pages = "1050-1056", url = "https://hdl.handle.net/21.15107/rcub_ristocar_809" }
Dosković, V., Bogosavljević-Bošković, S., Škrbić, Z., Milošević, B., Lukić, M., Rakonjac, S.,& Petričević, V.. (2022). EFFECTS OF PROTEASE, DURATION OF FATTENING PERIOD AND SEX OF BROILERS ON CARCASS CONFORMATION MEASURES. in Book of Proceedings of the XIII International Scientific Agricultural Symposium „Agrosym 2022“, Jahorina, October 6-9, 2022, Bosnia and Herzegovina, 1050-1056. https://hdl.handle.net/21.15107/rcub_ristocar_809
Dosković V, Bogosavljević-Bošković S, Škrbić Z, Milošević B, Lukić M, Rakonjac S, Petričević V. EFFECTS OF PROTEASE, DURATION OF FATTENING PERIOD AND SEX OF BROILERS ON CARCASS CONFORMATION MEASURES. in Book of Proceedings of the XIII International Scientific Agricultural Symposium „Agrosym 2022“, Jahorina, October 6-9, 2022, Bosnia and Herzegovina. 2022;:1050-1056. https://hdl.handle.net/21.15107/rcub_ristocar_809 .
Dosković, Vladimir, Bogosavljević-Bošković, Snežana, Škrbić, Zdenka, Milošević, Božidar, Lukić, Miloš, Rakonjac, Simeon, Petričević, Veselin, "EFFECTS OF PROTEASE, DURATION OF FATTENING PERIOD AND SEX OF BROILERS ON CARCASS CONFORMATION MEASURES" in Book of Proceedings of the XIII International Scientific Agricultural Symposium „Agrosym 2022“, Jahorina, October 6-9, 2022, Bosnia and Herzegovina (2022):1050-1056, https://hdl.handle.net/21.15107/rcub_ristocar_809 .