Digestible threonine to lysine ratios for meat-type quails
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1590/1806-9061-2017-0636 http://hdl.handle.net/11449/221525 |
Resumo: | Three experiments were conducted to estimate the optimal digestible threonine to lysine ratios (Thr:Lys) of meat-type quails during the pre-starter (1 to 7 days), starter (8 to 14 days) and grower I (15 to 21 days) phases. In each experiment, 600 birds were distributed according to a completely randomized experimental design into five treatments, consisting of five dietary Thr:Lys ratios (0.66, 0.71, 0.76, 0.81 and 0.86%), with eight replicates of 15 quails each. Performance parameters and intestinal morphology were evaluated. During the pre-starter phase, feed intake, threonine intake, weight gain, and ileal villus height linearly increased (p<0.01) as dietary digestible Thr:Lys increased. During the starter phase, increasing digestible Thr:Lys ratios had a linear effect (p<0.01) on threonine intake and livability, and linear and quadratic effects (p<0.01) on feed intake. During the grower I phase, increasing digestible Thr:Lys ratios promoted linear increase in threonine intake and feed conversion ratio (p<0.05), and a linear decrease in weight gain. The estimated digestible Thr:Lys ratios recommended for meat-type quails are 0.85, 0.73 and 0.66%, for the pre-starter, starter and grower I phases, respectively. |
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Digestible threonine to lysine ratios for meat-type quailsAmino acidsCoturnix coturnixIdeal proteinPerformanceThree experiments were conducted to estimate the optimal digestible threonine to lysine ratios (Thr:Lys) of meat-type quails during the pre-starter (1 to 7 days), starter (8 to 14 days) and grower I (15 to 21 days) phases. In each experiment, 600 birds were distributed according to a completely randomized experimental design into five treatments, consisting of five dietary Thr:Lys ratios (0.66, 0.71, 0.76, 0.81 and 0.86%), with eight replicates of 15 quails each. Performance parameters and intestinal morphology were evaluated. During the pre-starter phase, feed intake, threonine intake, weight gain, and ileal villus height linearly increased (p<0.01) as dietary digestible Thr:Lys increased. During the starter phase, increasing digestible Thr:Lys ratios had a linear effect (p<0.01) on threonine intake and livability, and linear and quadratic effects (p<0.01) on feed intake. During the grower I phase, increasing digestible Thr:Lys ratios promoted linear increase in threonine intake and feed conversion ratio (p<0.05), and a linear decrease in weight gain. The estimated digestible Thr:Lys ratios recommended for meat-type quails are 0.85, 0.73 and 0.66%, for the pre-starter, starter and grower I phases, respectively.Fundação de Amparo à Pesquisa do Estado de Minas Gerais (FAPEMIG)Departamento de Zootecnia Universidade Federal dos Vales do Jequitinhonha e MucuriDepartamento de Zootecnia Universidade Federal de Minas GeraisDepartamento de Zootecnia Faculdade de Ciencias Agrarias e VeterinariasUniversidade Federal dos Vales do Jequitinhonha e MucuriUniversidade Federal de Minas Gerais (UFMG)Faculdade de Ciencias Agrarias e VeterinariasCastro, M. R.Pinheiro, Sandra Regina FreitasOliveira, R. G.Abreu, L. R.A.Mota, L. F.M.Miranda, J. A.2022-04-28T19:29:13Z2022-04-28T19:29:13Z2020-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article1-8http://dx.doi.org/10.1590/1806-9061-2017-0636Revista Brasileira de Ciencia Avicola, v. 22, n. 1, p. 1-8, 2020.1516-635Xhttp://hdl.handle.net/11449/22152510.1590/1806-9061-2017-06362-s2.0-85088798778Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengRevista Brasileira de Ciencia Avicolainfo:eu-repo/semantics/openAccess2022-04-28T19:29:13Zoai:repositorio.unesp.br:11449/221525Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462022-04-28T19:29:13Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Digestible threonine to lysine ratios for meat-type quails |
title |
Digestible threonine to lysine ratios for meat-type quails |
spellingShingle |
Digestible threonine to lysine ratios for meat-type quails Castro, M. R. Amino acids Coturnix coturnix Ideal protein Performance |
title_short |
Digestible threonine to lysine ratios for meat-type quails |
title_full |
Digestible threonine to lysine ratios for meat-type quails |
title_fullStr |
Digestible threonine to lysine ratios for meat-type quails |
title_full_unstemmed |
Digestible threonine to lysine ratios for meat-type quails |
title_sort |
Digestible threonine to lysine ratios for meat-type quails |
author |
Castro, M. R. |
author_facet |
Castro, M. R. Pinheiro, Sandra Regina Freitas Oliveira, R. G. Abreu, L. R.A. Mota, L. F.M. Miranda, J. A. |
author_role |
author |
author2 |
Pinheiro, Sandra Regina Freitas Oliveira, R. G. Abreu, L. R.A. Mota, L. F.M. Miranda, J. A. |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Federal dos Vales do Jequitinhonha e Mucuri Universidade Federal de Minas Gerais (UFMG) Faculdade de Ciencias Agrarias e Veterinarias |
dc.contributor.author.fl_str_mv |
Castro, M. R. Pinheiro, Sandra Regina Freitas Oliveira, R. G. Abreu, L. R.A. Mota, L. F.M. Miranda, J. A. |
dc.subject.por.fl_str_mv |
Amino acids Coturnix coturnix Ideal protein Performance |
topic |
Amino acids Coturnix coturnix Ideal protein Performance |
description |
Three experiments were conducted to estimate the optimal digestible threonine to lysine ratios (Thr:Lys) of meat-type quails during the pre-starter (1 to 7 days), starter (8 to 14 days) and grower I (15 to 21 days) phases. In each experiment, 600 birds were distributed according to a completely randomized experimental design into five treatments, consisting of five dietary Thr:Lys ratios (0.66, 0.71, 0.76, 0.81 and 0.86%), with eight replicates of 15 quails each. Performance parameters and intestinal morphology were evaluated. During the pre-starter phase, feed intake, threonine intake, weight gain, and ileal villus height linearly increased (p<0.01) as dietary digestible Thr:Lys increased. During the starter phase, increasing digestible Thr:Lys ratios had a linear effect (p<0.01) on threonine intake and livability, and linear and quadratic effects (p<0.01) on feed intake. During the grower I phase, increasing digestible Thr:Lys ratios promoted linear increase in threonine intake and feed conversion ratio (p<0.05), and a linear decrease in weight gain. The estimated digestible Thr:Lys ratios recommended for meat-type quails are 0.85, 0.73 and 0.66%, for the pre-starter, starter and grower I phases, respectively. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-01-01 2022-04-28T19:29:13Z 2022-04-28T19:29:13Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1590/1806-9061-2017-0636 Revista Brasileira de Ciencia Avicola, v. 22, n. 1, p. 1-8, 2020. 1516-635X http://hdl.handle.net/11449/221525 10.1590/1806-9061-2017-0636 2-s2.0-85088798778 |
url |
http://dx.doi.org/10.1590/1806-9061-2017-0636 http://hdl.handle.net/11449/221525 |
identifier_str_mv |
Revista Brasileira de Ciencia Avicola, v. 22, n. 1, p. 1-8, 2020. 1516-635X 10.1590/1806-9061-2017-0636 2-s2.0-85088798778 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Revista Brasileira de Ciencia Avicola |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
1-8 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1797790370951593984 |