Digestible tryptophan requirements for broilers from 22 to 42 days old

Detalhes bibliográficos
Autor(a) principal: Duarte,Karina Ferreira
Data de Publicação: 2013
Outros Autores: Junqueira,Otto Mack, Filardi,Rosemeire da Silva, Siqueira,Jefferson Costa de, Puzotti,Maíra Mangili, Garcia,Edivaldo Antônio, Molino,Andrea de Britto, Laurentiz,Antonio Carlos de
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Revista Brasileira de Zootecnia (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013001000006
Resumo: The objective of this experiment was to establish different criteria to evaluate the requirements of digestible tryptophan for broilers from 22 to 42 d of age, using different regression models (quadratic, exponential and Linear Response Plateau) and in case of statistical significance the comparison of means by Duncan test at 5% probability was also adopted. A total of 1,920 Cobb 500 male broilers were distributed in a completely randomized experimental design, with 6 treatments (6 digestible tryptophan levels: 0.1395, 0.1610, 0.1825, 0.2040, 0.2255 and 0.2470%) and 8 replications containing 40 broilers each. Performance and carcass characteristics were evaluated. The level of 0.2255% of digestible tryptophan numerically improves feed conversion, and the 0.1919% estimated by the quadratic equation significantly improves carcass yield.
id SBZ-1_70098f4cc971cb67aca56710dd243356
oai_identifier_str oai:scielo:S1516-35982013001000006
network_acronym_str SBZ-1
network_name_str Revista Brasileira de Zootecnia (Online)
repository_id_str
spelling Digestible tryptophan requirements for broilers from 22 to 42 days olddigestible amino acidsideal proteinperformanceregression analysisThe objective of this experiment was to establish different criteria to evaluate the requirements of digestible tryptophan for broilers from 22 to 42 d of age, using different regression models (quadratic, exponential and Linear Response Plateau) and in case of statistical significance the comparison of means by Duncan test at 5% probability was also adopted. A total of 1,920 Cobb 500 male broilers were distributed in a completely randomized experimental design, with 6 treatments (6 digestible tryptophan levels: 0.1395, 0.1610, 0.1825, 0.2040, 0.2255 and 0.2470%) and 8 replications containing 40 broilers each. Performance and carcass characteristics were evaluated. The level of 0.2255% of digestible tryptophan numerically improves feed conversion, and the 0.1919% estimated by the quadratic equation significantly improves carcass yield.Sociedade Brasileira de Zootecnia2013-10-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013001000006Revista Brasileira de Zootecnia v.42 n.10 2013reponame:Revista Brasileira de Zootecnia (Online)instname:Sociedade Brasileira de Zootecnia (SBZ)instacron:SBZ10.1590/S1516-35982013001000006info:eu-repo/semantics/openAccessDuarte,Karina FerreiraJunqueira,Otto MackFilardi,Rosemeire da SilvaSiqueira,Jefferson Costa dePuzotti,Maíra MangiliGarcia,Edivaldo AntônioMolino,Andrea de BrittoLaurentiz,Antonio Carlos deeng2013-09-12T00:00:00Zoai:scielo:S1516-35982013001000006Revistahttps://www.rbz.org.br/pt-br/https://old.scielo.br/oai/scielo-oai.php||bz@sbz.org.br|| secretariarbz@sbz.org.br1806-92901516-3598opendoar:2013-09-12T00:00Revista Brasileira de Zootecnia (Online) - Sociedade Brasileira de Zootecnia (SBZ)false
dc.title.none.fl_str_mv Digestible tryptophan requirements for broilers from 22 to 42 days old
title Digestible tryptophan requirements for broilers from 22 to 42 days old
spellingShingle Digestible tryptophan requirements for broilers from 22 to 42 days old
Duarte,Karina Ferreira
digestible amino acids
ideal protein
performance
regression analysis
title_short Digestible tryptophan requirements for broilers from 22 to 42 days old
title_full Digestible tryptophan requirements for broilers from 22 to 42 days old
title_fullStr Digestible tryptophan requirements for broilers from 22 to 42 days old
title_full_unstemmed Digestible tryptophan requirements for broilers from 22 to 42 days old
title_sort Digestible tryptophan requirements for broilers from 22 to 42 days old
author Duarte,Karina Ferreira
author_facet Duarte,Karina Ferreira
Junqueira,Otto Mack
Filardi,Rosemeire da Silva
Siqueira,Jefferson Costa de
Puzotti,Maíra Mangili
Garcia,Edivaldo Antônio
Molino,Andrea de Britto
Laurentiz,Antonio Carlos de
author_role author
author2 Junqueira,Otto Mack
Filardi,Rosemeire da Silva
Siqueira,Jefferson Costa de
Puzotti,Maíra Mangili
Garcia,Edivaldo Antônio
Molino,Andrea de Britto
Laurentiz,Antonio Carlos de
author2_role author
author
author
author
author
author
author
dc.contributor.author.fl_str_mv Duarte,Karina Ferreira
Junqueira,Otto Mack
Filardi,Rosemeire da Silva
Siqueira,Jefferson Costa de
Puzotti,Maíra Mangili
Garcia,Edivaldo Antônio
Molino,Andrea de Britto
Laurentiz,Antonio Carlos de
dc.subject.por.fl_str_mv digestible amino acids
ideal protein
performance
regression analysis
topic digestible amino acids
ideal protein
performance
regression analysis
description The objective of this experiment was to establish different criteria to evaluate the requirements of digestible tryptophan for broilers from 22 to 42 d of age, using different regression models (quadratic, exponential and Linear Response Plateau) and in case of statistical significance the comparison of means by Duncan test at 5% probability was also adopted. A total of 1,920 Cobb 500 male broilers were distributed in a completely randomized experimental design, with 6 treatments (6 digestible tryptophan levels: 0.1395, 0.1610, 0.1825, 0.2040, 0.2255 and 0.2470%) and 8 replications containing 40 broilers each. Performance and carcass characteristics were evaluated. The level of 0.2255% of digestible tryptophan numerically improves feed conversion, and the 0.1919% estimated by the quadratic equation significantly improves carcass yield.
publishDate 2013
dc.date.none.fl_str_mv 2013-10-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013001000006
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013001000006
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S1516-35982013001000006
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Sociedade Brasileira de Zootecnia
publisher.none.fl_str_mv Sociedade Brasileira de Zootecnia
dc.source.none.fl_str_mv Revista Brasileira de Zootecnia v.42 n.10 2013
reponame:Revista Brasileira de Zootecnia (Online)
instname:Sociedade Brasileira de Zootecnia (SBZ)
instacron:SBZ
instname_str Sociedade Brasileira de Zootecnia (SBZ)
instacron_str SBZ
institution SBZ
reponame_str Revista Brasileira de Zootecnia (Online)
collection Revista Brasileira de Zootecnia (Online)
repository.name.fl_str_mv Revista Brasileira de Zootecnia (Online) - Sociedade Brasileira de Zootecnia (SBZ)
repository.mail.fl_str_mv ||bz@sbz.org.br|| secretariarbz@sbz.org.br
_version_ 1750318150905233408

Registros relacionados