Digestible lysine and methionine+cystine requirements of growing broilers

Detalhes bibliográficos
Autor(a) principal: Barbosa, Maria José Baptista
Data de Publicação: 2008
Outros Autores: Junqueira, Otto Mack, Andreotti, Marcelo de Oliveira, Cancherini, Luciana Cardoso
Tipo de documento: Artigo
Idioma: por
Título da fonte: Acta Scientiarum. Animal Sciences (Online)
Texto Completo: https://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/2644
Resumo: An experiment was conducted to evaluate the digestible lysine and methionine+cystine (met+cis) diet requirements for broiler chickens of 22 to 42 day-old, feed rations with 3 lysine levels (0.90; 0.99 and 1.09%) and 3 met+cis levels (0.74; 0.81 and 0.89%). Weight gain (WG) and feed conversion (FC) were better in medium and high levels of lysine. Feed intake (FI) and viability (V) were not affected. The met+cis levels did not affect performance. Best CA interaction occurred in the 2 highest levels of aminoacids. The rate of lysine efficiency was influenced by lysine levels, albeit not by met+cis levels. The rate of methionine efficiency was influenced by lysine and met+cis, with interaction for this parameter. Carcass weight, carcass yield, abdominal fat and chemical composition of the breast meat were not affected by lysine and met+cis. For best performance, the digestible lysine and methionine+cystine levels must be 0.99% and 0.74%, respectively. If focus is on carcass or cut yield, the requirements of digestible lysine and methionine+cystine were 0.90 and 0.74%, respectively.
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spelling Digestible lysine and methionine+cystine requirements of growing broilersExigências de lisina e metionina+cistina digestíveis em dietas para frangos de corte na fase de crescimentoaminoácidos digestíveisdesempenhofrangos de corte5.04.00.00-2 ZootecniaAn experiment was conducted to evaluate the digestible lysine and methionine+cystine (met+cis) diet requirements for broiler chickens of 22 to 42 day-old, feed rations with 3 lysine levels (0.90; 0.99 and 1.09%) and 3 met+cis levels (0.74; 0.81 and 0.89%). Weight gain (WG) and feed conversion (FC) were better in medium and high levels of lysine. Feed intake (FI) and viability (V) were not affected. The met+cis levels did not affect performance. Best CA interaction occurred in the 2 highest levels of aminoacids. The rate of lysine efficiency was influenced by lysine levels, albeit not by met+cis levels. The rate of methionine efficiency was influenced by lysine and met+cis, with interaction for this parameter. Carcass weight, carcass yield, abdominal fat and chemical composition of the breast meat were not affected by lysine and met+cis. For best performance, the digestible lysine and methionine+cystine levels must be 0.99% and 0.74%, respectively. If focus is on carcass or cut yield, the requirements of digestible lysine and methionine+cystine were 0.90 and 0.74%, respectively.O experimento foi realizado com o objetivo de estudar as exigências de lisina e de aminoácidos sulfurados digestíveis (met+cis) para frangos de corte. Foram utilizados frangos de 22 a 42 dias de idade, recebendo rações com 3 níveis de lisina (0,90; 0,99 e 1,09%) e 3 níveis de met+cis (0,74; 0,81 e 0,89%). O ganho de peso (GP) e a conversão alimentar (CA) foram melhores nos níveis médio e alto de lisina, porém o consumo de ração (CR) e a viabilidade (V) não foram afetados. Os níveis de met+cis não afetaram o desempenho. A melhor interação para a CA foi nos 2 níveis mais altos de aminoácidos estudados. A taxa de eficiência de lisina (TEL) foi influenciada pelos níveis de lisina, porém não o foi pelos níveis de met+cis. A taxa de eficiência de metionina (TEM) foi influenciada tanto pela lisina como pela met+cis com interação para este parâmetro. O peso, rendimento de carcaça e de cortes, gordura abdominal e a composição química da carne do peito não foram afetados pela lisina e met+cis. Os níveis de lisina e de aminoácidos sulfurados digestíveis para melhor desempenho foram 0,99% e 0,74%, respectivamente. Contudo, se o interesse for o rendimento de carcaça e de partes, as exigências de lisina digestível e de aminoácidos sulfurados digestíveis foram 0,90 e 0,74%, respectivamente.Editora da Universidade Estadual de Maringá2008-05-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/264410.4025/actascianimsci.v23i0.2644Acta Scientiarum. Animal Sciences; Vol 23 (2001); 909-915Acta Scientiarum. Animal Sciences; v. 23 (2001); 909-9151807-86721806-2636reponame:Acta Scientiarum. Animal Sciences (Online)instname:Universidade Estadual de Maringá (UEM)instacron:UEMporhttps://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/2644/2165Barbosa, Maria José BaptistaJunqueira, Otto MackAndreotti, Marcelo de OliveiraCancherini, Luciana Cardosoinfo:eu-repo/semantics/openAccess2024-05-17T13:03:47Zoai:periodicos.uem.br/ojs:article/2644Revistahttp://www.periodicos.uem.br/ojs/index.php/ActaSciAnimSciPUBhttp://www.periodicos.uem.br/ojs/index.php/ActaSciAnimSci/oaiactaanim@uem.br||actaanim@uem.br|| rev.acta@gmail.com1807-86721806-2636opendoar:2024-05-17T13:03:47Acta Scientiarum. Animal Sciences (Online) - Universidade Estadual de Maringá (UEM)false
dc.title.none.fl_str_mv Digestible lysine and methionine+cystine requirements of growing broilers
Exigências de lisina e metionina+cistina digestíveis em dietas para frangos de corte na fase de crescimento
title Digestible lysine and methionine+cystine requirements of growing broilers
spellingShingle Digestible lysine and methionine+cystine requirements of growing broilers
Barbosa, Maria José Baptista
aminoácidos digestíveis
desempenho
frangos de corte
5.04.00.00-2 Zootecnia
title_short Digestible lysine and methionine+cystine requirements of growing broilers
title_full Digestible lysine and methionine+cystine requirements of growing broilers
title_fullStr Digestible lysine and methionine+cystine requirements of growing broilers
title_full_unstemmed Digestible lysine and methionine+cystine requirements of growing broilers
title_sort Digestible lysine and methionine+cystine requirements of growing broilers
author Barbosa, Maria José Baptista
author_facet Barbosa, Maria José Baptista
Junqueira, Otto Mack
Andreotti, Marcelo de Oliveira
Cancherini, Luciana Cardoso
author_role author
author2 Junqueira, Otto Mack
Andreotti, Marcelo de Oliveira
Cancherini, Luciana Cardoso
author2_role author
author
author
dc.contributor.author.fl_str_mv Barbosa, Maria José Baptista
Junqueira, Otto Mack
Andreotti, Marcelo de Oliveira
Cancherini, Luciana Cardoso
dc.subject.por.fl_str_mv aminoácidos digestíveis
desempenho
frangos de corte
5.04.00.00-2 Zootecnia
topic aminoácidos digestíveis
desempenho
frangos de corte
5.04.00.00-2 Zootecnia
description An experiment was conducted to evaluate the digestible lysine and methionine+cystine (met+cis) diet requirements for broiler chickens of 22 to 42 day-old, feed rations with 3 lysine levels (0.90; 0.99 and 1.09%) and 3 met+cis levels (0.74; 0.81 and 0.89%). Weight gain (WG) and feed conversion (FC) were better in medium and high levels of lysine. Feed intake (FI) and viability (V) were not affected. The met+cis levels did not affect performance. Best CA interaction occurred in the 2 highest levels of aminoacids. The rate of lysine efficiency was influenced by lysine levels, albeit not by met+cis levels. The rate of methionine efficiency was influenced by lysine and met+cis, with interaction for this parameter. Carcass weight, carcass yield, abdominal fat and chemical composition of the breast meat were not affected by lysine and met+cis. For best performance, the digestible lysine and methionine+cystine levels must be 0.99% and 0.74%, respectively. If focus is on carcass or cut yield, the requirements of digestible lysine and methionine+cystine were 0.90 and 0.74%, respectively.
publishDate 2008
dc.date.none.fl_str_mv 2008-05-09
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/2644
10.4025/actascianimsci.v23i0.2644
url https://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/2644
identifier_str_mv 10.4025/actascianimsci.v23i0.2644
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/2644/2165
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Editora da Universidade Estadual de Maringá
publisher.none.fl_str_mv Editora da Universidade Estadual de Maringá
dc.source.none.fl_str_mv Acta Scientiarum. Animal Sciences; Vol 23 (2001); 909-915
Acta Scientiarum. Animal Sciences; v. 23 (2001); 909-915
1807-8672
1806-2636
reponame:Acta Scientiarum. Animal Sciences (Online)
instname:Universidade Estadual de Maringá (UEM)
instacron:UEM
instname_str Universidade Estadual de Maringá (UEM)
instacron_str UEM
institution UEM
reponame_str Acta Scientiarum. Animal Sciences (Online)
collection Acta Scientiarum. Animal Sciences (Online)
repository.name.fl_str_mv Acta Scientiarum. Animal Sciences (Online) - Universidade Estadual de Maringá (UEM)
repository.mail.fl_str_mv actaanim@uem.br||actaanim@uem.br|| rev.acta@gmail.com
_version_ 1799315358563172352

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