Yield and carcass composition of broilers fed with diets based on the concept of crude protein or ideal protein
Autor(a) principal: | |
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Data de Publicação: | 2004 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/19999 |
Resumo: | Two experiments were conducted to evaluate the effect of diets formulated using the criteria of crude protein (CP) and ideal protein (IP) on the yield and carcass composition of male and female broilers. Birds of two broilers strains (Hybro G and Hybro PG) were reared from 1 to 42 days of age during the summer, with average temperatures of 26°C. A completely randomized experimental design was used in a 2 x 2 factorial arrangement, with 6 replicates and 20 birds per pen. On day 42, four birds from each experimental unit were killed and carcass yield and composition were determined. Breast yield was higher in males and females fed the IP-based diet than in birds fed the CP-based diet. Abdominal fat pad and carcass crude protein were statistically similar between the two protein criteria and between strains. Carcass amino acid levels evidenced higher levels of Met, Lys, Met+Cys and Thr in the males fed IP-based diets. No differences were seen between the two criteria for the females. Diets formulated according to IP resulted in better carcass and breast yield, both for males and females. |
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Toledo, Geni Salete Pinto deLopez, JorgeCosta, P.T.C.2010-04-16T09:12:33Z20041516-635Xhttp://hdl.handle.net/10183/19999000486342Two experiments were conducted to evaluate the effect of diets formulated using the criteria of crude protein (CP) and ideal protein (IP) on the yield and carcass composition of male and female broilers. Birds of two broilers strains (Hybro G and Hybro PG) were reared from 1 to 42 days of age during the summer, with average temperatures of 26°C. A completely randomized experimental design was used in a 2 x 2 factorial arrangement, with 6 replicates and 20 birds per pen. On day 42, four birds from each experimental unit were killed and carcass yield and composition were determined. Breast yield was higher in males and females fed the IP-based diet than in birds fed the CP-based diet. Abdominal fat pad and carcass crude protein were statistically similar between the two protein criteria and between strains. Carcass amino acid levels evidenced higher levels of Met, Lys, Met+Cys and Thr in the males fed IP-based diets. No differences were seen between the two criteria for the females. Diets formulated according to IP resulted in better carcass and breast yield, both for males and females.application/pdfengRevista brasileira de ciência avícola= Brazilian journal of poultry science. Campinas, SP. Vol. 6, n. 4 (out./nov. 2004), p. 219-224AviculturaNutricao animalProteínaBroilersCarcass compositionCrude proteinCarcass yieldIdeal proteinYield and carcass composition of broilers fed with diets based on the concept of crude protein or ideal proteininfo:eu-repo/semantics/articleinfo:eu-repo/semantics/otherinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSORIGINAL000486342.pdf000486342.pdfTexto completo (inglês)application/pdf87885http://www.lume.ufrgs.br/bitstream/10183/19999/1/000486342.pdf72df6937fdaf5f204c7748dae5cef638MD51TEXT000486342.pdf.txt000486342.pdf.txtExtracted Texttext/plain25220http://www.lume.ufrgs.br/bitstream/10183/19999/2/000486342.pdf.txt5728d0738b43da323be5be8f17ebb38eMD52THUMBNAIL000486342.pdf.jpg000486342.pdf.jpgGenerated Thumbnailimage/jpeg1873http://www.lume.ufrgs.br/bitstream/10183/19999/3/000486342.pdf.jpg6e2862e34ef8d0e326f1d45613703815MD5310183/199992021-06-13 04:30:22.066924oai:www.lume.ufrgs.br:10183/19999Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2021-06-13T07:30:22Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Yield and carcass composition of broilers fed with diets based on the concept of crude protein or ideal protein |
title |
Yield and carcass composition of broilers fed with diets based on the concept of crude protein or ideal protein |
spellingShingle |
Yield and carcass composition of broilers fed with diets based on the concept of crude protein or ideal protein Toledo, Geni Salete Pinto de Avicultura Nutricao animal Proteína Broilers Carcass composition Crude protein Carcass yield Ideal protein |
title_short |
Yield and carcass composition of broilers fed with diets based on the concept of crude protein or ideal protein |
title_full |
Yield and carcass composition of broilers fed with diets based on the concept of crude protein or ideal protein |
title_fullStr |
Yield and carcass composition of broilers fed with diets based on the concept of crude protein or ideal protein |
title_full_unstemmed |
Yield and carcass composition of broilers fed with diets based on the concept of crude protein or ideal protein |
title_sort |
Yield and carcass composition of broilers fed with diets based on the concept of crude protein or ideal protein |
author |
Toledo, Geni Salete Pinto de |
author_facet |
Toledo, Geni Salete Pinto de Lopez, Jorge Costa, P.T.C. |
author_role |
author |
author2 |
Lopez, Jorge Costa, P.T.C. |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Toledo, Geni Salete Pinto de Lopez, Jorge Costa, P.T.C. |
dc.subject.por.fl_str_mv |
Avicultura Nutricao animal Proteína |
topic |
Avicultura Nutricao animal Proteína Broilers Carcass composition Crude protein Carcass yield Ideal protein |
dc.subject.eng.fl_str_mv |
Broilers Carcass composition Crude protein Carcass yield Ideal protein |
description |
Two experiments were conducted to evaluate the effect of diets formulated using the criteria of crude protein (CP) and ideal protein (IP) on the yield and carcass composition of male and female broilers. Birds of two broilers strains (Hybro G and Hybro PG) were reared from 1 to 42 days of age during the summer, with average temperatures of 26°C. A completely randomized experimental design was used in a 2 x 2 factorial arrangement, with 6 replicates and 20 birds per pen. On day 42, four birds from each experimental unit were killed and carcass yield and composition were determined. Breast yield was higher in males and females fed the IP-based diet than in birds fed the CP-based diet. Abdominal fat pad and carcass crude protein were statistically similar between the two protein criteria and between strains. Carcass amino acid levels evidenced higher levels of Met, Lys, Met+Cys and Thr in the males fed IP-based diets. No differences were seen between the two criteria for the females. Diets formulated according to IP resulted in better carcass and breast yield, both for males and females. |
publishDate |
2004 |
dc.date.issued.fl_str_mv |
2004 |
dc.date.accessioned.fl_str_mv |
2010-04-16T09:12:33Z |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/other |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10183/19999 |
dc.identifier.issn.pt_BR.fl_str_mv |
1516-635X |
dc.identifier.nrb.pt_BR.fl_str_mv |
000486342 |
identifier_str_mv |
1516-635X 000486342 |
url |
http://hdl.handle.net/10183/19999 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Revista brasileira de ciência avícola= Brazilian journal of poultry science. Campinas, SP. Vol. 6, n. 4 (out./nov. 2004), p. 219-224 |
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info:eu-repo/semantics/openAccess |
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openAccess |
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application/pdf |
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