Effect of dietary protein level and length of fattening period on dressing percentage and carcass conformation in broiler chickens
Uticaj nivoa proteina u hrani i dužine trajanja tova na randman i mere konformacije trupova pilića

2017
Authors
Dosković, Vladimir
Bogosavljević-Bošković, Snežana

Škrbić, Zdenka

Đoković, Radojica
Rakonjac, Simeon

Petričević, Veselin

Article (Published version)
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This study analyses the effect of different protein levels in broiler feeds (supplemented with protease) and different lengths of fattening period on some parameters related to dressed carcass quality. Medium-growing Master Gris broiler chickens were used in a fattening trial lasting 63 days. At slaughter, dressing percentages and abdominal fat percentages were determined based on traditionally dressed carcass weights and abdominal fat weights of broilers at 49 and 63 days, and conformation indices were calculated based on absolute conformation measurements. Results showed that dietary treatment had an effect only on one relative conformation measurement - body weight/shank length in chickens at 49 days, as control broilers had higher values of this index compared to chickens receiving feeds containing reduced levels of crude protein and protease supplementation (0.2% or 0.3%). Length of fattening period affected almost all studied parameters, except breast angle, dressing percentage o...f traditionally dressed carcass and abdominal fat percentage.
U radu je analiziran uticaj različitog nivoa proteina u hrani za tov pilića (uz dodatak enzima proteaze) i dužine trajanja tova na neke parametre kvaliteta obrađenih trupova. U ogledu je korišćen medium-growing linijski hibrid Master Gris, a ogled je trajao 63 dana. Na liniji klanja, na osnovu mase klasično obrađenog trupa i mase abdominalne masti pilića uzrasta 49. i 63.dana tova utvrđen je randman klasimično obrađenog trupa i udeo abdominalne masti, a na osnovu apsolutnih mera konformacije izračunati su indeksi mera konformacije. Rezultati ogleda su pokazali da je uticaj ispitivanih obroka ispoljio efekat samo na jednu relativnu meru konformacije trupova - telesna masa/dužina piska kod pilića starosti 49.dana, jer su pilići iz kontrolne grupe imali veću vrednost ovog indeksa u odnosu na piliće koji su hranjeni smešama sa nižim nivoima sirovih proteina, uz dodatak enzima proteaze (0,2% ili 0,3%). Različita dužina trajanja tova uticala je na skoro sve ispitivane parametre, izuzev na ve...ličinu grudnog ugla, randman klasično obrađenog trupa i udeo abdominalne masti.
Keywords:
broiler chickens / protease / length of fattening period / traditionally dressed carcass / conformation measurement / pilići / proteaza / dužina trajanja tova / klasično obrađen trup / mere konformacijeSource:
Biotechnology in Animal Husbandry, 2017, 33, 2, 211-219Publisher:
- Institute for Animal Husbandry, Belgrade
Funding / projects:
Collections
Institution/Community
RIStocarTY - JOUR AU - Dosković, Vladimir AU - Bogosavljević-Bošković, Snežana AU - Škrbić, Zdenka AU - Đoković, Radojica AU - Rakonjac, Simeon AU - Petričević, Veselin PY - 2017 UR - http://r.istocar.bg.ac.rs/handle/123456789/512 AB - This study analyses the effect of different protein levels in broiler feeds (supplemented with protease) and different lengths of fattening period on some parameters related to dressed carcass quality. Medium-growing Master Gris broiler chickens were used in a fattening trial lasting 63 days. At slaughter, dressing percentages and abdominal fat percentages were determined based on traditionally dressed carcass weights and abdominal fat weights of broilers at 49 and 63 days, and conformation indices were calculated based on absolute conformation measurements. Results showed that dietary treatment had an effect only on one relative conformation measurement - body weight/shank length in chickens at 49 days, as control broilers had higher values of this index compared to chickens receiving feeds containing reduced levels of crude protein and protease supplementation (0.2% or 0.3%). Length of fattening period affected almost all studied parameters, except breast angle, dressing percentage of traditionally dressed carcass and abdominal fat percentage. AB - U radu je analiziran uticaj različitog nivoa proteina u hrani za tov pilića (uz dodatak enzima proteaze) i dužine trajanja tova na neke parametre kvaliteta obrađenih trupova. U ogledu je korišćen medium-growing linijski hibrid Master Gris, a ogled je trajao 63 dana. Na liniji klanja, na osnovu mase klasično obrađenog trupa i mase abdominalne masti pilića uzrasta 49. i 63.dana tova utvrđen je randman klasimično obrađenog trupa i udeo abdominalne masti, a na osnovu apsolutnih mera konformacije izračunati su indeksi mera konformacije. Rezultati ogleda su pokazali da je uticaj ispitivanih obroka ispoljio efekat samo na jednu relativnu meru konformacije trupova - telesna masa/dužina piska kod pilića starosti 49.dana, jer su pilići iz kontrolne grupe imali veću vrednost ovog indeksa u odnosu na piliće koji su hranjeni smešama sa nižim nivoima sirovih proteina, uz dodatak enzima proteaze (0,2% ili 0,3%). Različita dužina trajanja tova uticala je na skoro sve ispitivane parametre, izuzev na veličinu grudnog ugla, randman klasično obrađenog trupa i udeo abdominalne masti. PB - Institute for Animal Husbandry, Belgrade T2 - Biotechnology in Animal Husbandry T1 - Effect of dietary protein level and length of fattening period on dressing percentage and carcass conformation in broiler chickens T1 - Uticaj nivoa proteina u hrani i dužine trajanja tova na randman i mere konformacije trupova pilića VL - 33 IS - 2 SP - 211 EP - 219 DO - 10.2298/BAH1702211D ER -
@article{ author = "Dosković, Vladimir and Bogosavljević-Bošković, Snežana and Škrbić, Zdenka and Đoković, Radojica and Rakonjac, Simeon and Petričević, Veselin", year = "2017", abstract = "This study analyses the effect of different protein levels in broiler feeds (supplemented with protease) and different lengths of fattening period on some parameters related to dressed carcass quality. Medium-growing Master Gris broiler chickens were used in a fattening trial lasting 63 days. At slaughter, dressing percentages and abdominal fat percentages were determined based on traditionally dressed carcass weights and abdominal fat weights of broilers at 49 and 63 days, and conformation indices were calculated based on absolute conformation measurements. Results showed that dietary treatment had an effect only on one relative conformation measurement - body weight/shank length in chickens at 49 days, as control broilers had higher values of this index compared to chickens receiving feeds containing reduced levels of crude protein and protease supplementation (0.2% or 0.3%). Length of fattening period affected almost all studied parameters, except breast angle, dressing percentage of traditionally dressed carcass and abdominal fat percentage., U radu je analiziran uticaj različitog nivoa proteina u hrani za tov pilića (uz dodatak enzima proteaze) i dužine trajanja tova na neke parametre kvaliteta obrađenih trupova. U ogledu je korišćen medium-growing linijski hibrid Master Gris, a ogled je trajao 63 dana. Na liniji klanja, na osnovu mase klasično obrađenog trupa i mase abdominalne masti pilića uzrasta 49. i 63.dana tova utvrđen je randman klasimično obrađenog trupa i udeo abdominalne masti, a na osnovu apsolutnih mera konformacije izračunati su indeksi mera konformacije. Rezultati ogleda su pokazali da je uticaj ispitivanih obroka ispoljio efekat samo na jednu relativnu meru konformacije trupova - telesna masa/dužina piska kod pilića starosti 49.dana, jer su pilići iz kontrolne grupe imali veću vrednost ovog indeksa u odnosu na piliće koji su hranjeni smešama sa nižim nivoima sirovih proteina, uz dodatak enzima proteaze (0,2% ili 0,3%). Različita dužina trajanja tova uticala je na skoro sve ispitivane parametre, izuzev na veličinu grudnog ugla, randman klasično obrađenog trupa i udeo abdominalne masti.", publisher = "Institute for Animal Husbandry, Belgrade", journal = "Biotechnology in Animal Husbandry", title = "Effect of dietary protein level and length of fattening period on dressing percentage and carcass conformation in broiler chickens, Uticaj nivoa proteina u hrani i dužine trajanja tova na randman i mere konformacije trupova pilića", volume = "33", number = "2", pages = "211-219", doi = "10.2298/BAH1702211D" }
Dosković, V., Bogosavljević-Bošković, S., Škrbić, Z., Đoković, R., Rakonjac, S.,& Petričević, V.. (2017). Effect of dietary protein level and length of fattening period on dressing percentage and carcass conformation in broiler chickens. in Biotechnology in Animal Husbandry Institute for Animal Husbandry, Belgrade., 33(2), 211-219. https://doi.org/10.2298/BAH1702211D
Dosković V, Bogosavljević-Bošković S, Škrbić Z, Đoković R, Rakonjac S, Petričević V. Effect of dietary protein level and length of fattening period on dressing percentage and carcass conformation in broiler chickens. in Biotechnology in Animal Husbandry. 2017;33(2):211-219. doi:10.2298/BAH1702211D .
Dosković, Vladimir, Bogosavljević-Bošković, Snežana, Škrbić, Zdenka, Đoković, Radojica, Rakonjac, Simeon, Petričević, Veselin, "Effect of dietary protein level and length of fattening period on dressing percentage and carcass conformation in broiler chickens" in Biotechnology in Animal Husbandry, 33, no. 2 (2017):211-219, https://doi.org/10.2298/BAH1702211D . .