Digestible methionine levels for white-egg layer pullets from 7 to 12 weeks of age

Detalhes bibliográficos
Autor(a) principal: Figueiredo Júnior, Jalceyr Pessoa
Data de Publicação: 2020
Outros Autores: Costa, Fernando Guilherme Perazzo, Guerra, Ricardo Romão, Santana, Marcelo Helder Medeiros, Lima, Matheus Ramalho de, Pinheiro, Sarah Gomes
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Acta Scientiarum. Animal Sciences (Online)
Texto Completo: https://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/47222
Resumo: An experiment was carried out to evaluate the requirement of digestible methionine for growing pullets at growth phase (7 to 12 weeks of age). A completely randomized design was distributed in five treatments, six replicates, and 15 pullets per experimental unit. 450 Dekalb White pullets from the 7th weeks of age, with an average initial weight of 313.14 ± 12.49 g were used. Dietary treatments consisted in five diets supplemented with DL-Methionine which resulted in five levels of digestible methionine (0.266, 0.294, 0.322, 0.350, and 0.378 %). Performance, serological blood, histopathology and histomorphometry data were evaluated. Quadratic responses were observed for final live weight (p < 0.0143), weight gain (p < 0.0073), feed conversion ratio (p < 0.0058), glycogen deposition in the liver (p < 0.0001), gamma-glutamyl transferase enzyme activity (p < 0.0008), and villus height (p < 0.0024) with digestible dMet levels. In conclusion, the use of 0.343 % dMet, corresponding to a dMet:dLys ratio 55, is recommended for white-egg pullets from 7 to 12 weeks of age.
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spelling Digestible methionine levels for white-egg layer pullets from 7 to 12 weeks of ageDigestible methionine levels for white-egg layer pullets from 7 to 12 weeks of ageEnzymatic profileEssential amino acidHistologyMorphometry.enzymatic profile; essential amino acid; histology; morphometry.An experiment was carried out to evaluate the requirement of digestible methionine for growing pullets at growth phase (7 to 12 weeks of age). A completely randomized design was distributed in five treatments, six replicates, and 15 pullets per experimental unit. 450 Dekalb White pullets from the 7th weeks of age, with an average initial weight of 313.14 ± 12.49 g were used. Dietary treatments consisted in five diets supplemented with DL-Methionine which resulted in five levels of digestible methionine (0.266, 0.294, 0.322, 0.350, and 0.378 %). Performance, serological blood, histopathology and histomorphometry data were evaluated. Quadratic responses were observed for final live weight (p < 0.0143), weight gain (p < 0.0073), feed conversion ratio (p < 0.0058), glycogen deposition in the liver (p < 0.0001), gamma-glutamyl transferase enzyme activity (p < 0.0008), and villus height (p < 0.0024) with digestible dMet levels. In conclusion, the use of 0.343 % dMet, corresponding to a dMet:dLys ratio 55, is recommended for white-egg pullets from 7 to 12 weeks of age.An experiment was carried out to evaluate the requirement of digestible methionine for growing pullets at growth phase (7 to 12 weeks of age). A completely randomized design was distributed in five treatments, six replicates, and 15 pullets per experimental unit. 450 Dekalb White pullets from the 7th weeks of age, with an average initial weight of 313.14 ± 12.49 g were used. Dietary treatments consisted in five diets supplemented with DL-Methionine which resulted in five levels of digestible methionine (0.266, 0.294, 0.322, 0.350, and 0.378 %). Performance, serological blood, histopathology and histomorphometry data were evaluated. Quadratic responses were observed for final live weight (p < 0.0143), weight gain (p < 0.0073), feed conversion ratio (p < 0.0058), glycogen deposition in the liver (p < 0.0001), gamma-glutamyl transferase enzyme activity (p < 0.0008), and villus height (p < 0.0024) with digestible dMet levels. In conclusion, the use of 0.343 % dMet, corresponding to a dMet:dLys ratio 55, is recommended for white-egg pullets from 7 to 12 weeks of age.Editora da Universidade Estadual de Maringá2020-04-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/4722210.4025/actascianimsci.v42i1.47222Acta Scientiarum. Animal Sciences; Vol 42 (2020): Publicação contínua; e47222Acta Scientiarum. Animal Sciences; v. 42 (2020): Publicação contínua; e472221807-86721806-2636reponame:Acta Scientiarum. Animal Sciences (Online)instname:Universidade Estadual de Maringá (UEM)instacron:UEMenghttps://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/47222/751375149786Copyright (c) 2020 Acta Scientiarum. Animal Scienceshttps://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccess Figueiredo Júnior, Jalceyr PessoaCosta, Fernando Guilherme PerazzoGuerra, Ricardo Romão Santana, Marcelo Helder MedeirosLima, Matheus Ramalho dePinheiro, Sarah Gomes 2020-11-16T18:33:11Zoai:periodicos.uem.br/ojs:article/47222Revistahttp://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:2020-11-16T18:33:11Acta Scientiarum. Animal Sciences (Online) - Universidade Estadual de Maringá (UEM)false
dc.title.none.fl_str_mv Digestible methionine levels for white-egg layer pullets from 7 to 12 weeks of age
Digestible methionine levels for white-egg layer pullets from 7 to 12 weeks of age
title Digestible methionine levels for white-egg layer pullets from 7 to 12 weeks of age
spellingShingle Digestible methionine levels for white-egg layer pullets from 7 to 12 weeks of age
Figueiredo Júnior, Jalceyr Pessoa
Enzymatic profile
Essential amino acid
Histology
Morphometry.
enzymatic profile; essential amino acid; histology; morphometry.
title_short Digestible methionine levels for white-egg layer pullets from 7 to 12 weeks of age
title_full Digestible methionine levels for white-egg layer pullets from 7 to 12 weeks of age
title_fullStr Digestible methionine levels for white-egg layer pullets from 7 to 12 weeks of age
title_full_unstemmed Digestible methionine levels for white-egg layer pullets from 7 to 12 weeks of age
title_sort Digestible methionine levels for white-egg layer pullets from 7 to 12 weeks of age
author Figueiredo Júnior, Jalceyr Pessoa
author_facet Figueiredo Júnior, Jalceyr Pessoa
Costa, Fernando Guilherme Perazzo
Guerra, Ricardo Romão
Santana, Marcelo Helder Medeiros
Lima, Matheus Ramalho de
Pinheiro, Sarah Gomes
author_role author
author2 Costa, Fernando Guilherme Perazzo
Guerra, Ricardo Romão
Santana, Marcelo Helder Medeiros
Lima, Matheus Ramalho de
Pinheiro, Sarah Gomes
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Figueiredo Júnior, Jalceyr Pessoa
Costa, Fernando Guilherme Perazzo
Guerra, Ricardo Romão
Santana, Marcelo Helder Medeiros
Lima, Matheus Ramalho de
Pinheiro, Sarah Gomes
dc.subject.por.fl_str_mv Enzymatic profile
Essential amino acid
Histology
Morphometry.
enzymatic profile; essential amino acid; histology; morphometry.
topic Enzymatic profile
Essential amino acid
Histology
Morphometry.
enzymatic profile; essential amino acid; histology; morphometry.
description An experiment was carried out to evaluate the requirement of digestible methionine for growing pullets at growth phase (7 to 12 weeks of age). A completely randomized design was distributed in five treatments, six replicates, and 15 pullets per experimental unit. 450 Dekalb White pullets from the 7th weeks of age, with an average initial weight of 313.14 ± 12.49 g were used. Dietary treatments consisted in five diets supplemented with DL-Methionine which resulted in five levels of digestible methionine (0.266, 0.294, 0.322, 0.350, and 0.378 %). Performance, serological blood, histopathology and histomorphometry data were evaluated. Quadratic responses were observed for final live weight (p < 0.0143), weight gain (p < 0.0073), feed conversion ratio (p < 0.0058), glycogen deposition in the liver (p < 0.0001), gamma-glutamyl transferase enzyme activity (p < 0.0008), and villus height (p < 0.0024) with digestible dMet levels. In conclusion, the use of 0.343 % dMet, corresponding to a dMet:dLys ratio 55, is recommended for white-egg pullets from 7 to 12 weeks of age.
publishDate 2020
dc.date.none.fl_str_mv 2020-04-01
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/47222
10.4025/actascianimsci.v42i1.47222
url https://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/47222
identifier_str_mv 10.4025/actascianimsci.v42i1.47222
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/47222/751375149786
dc.rights.driver.fl_str_mv Copyright (c) 2020 Acta Scientiarum. Animal Sciences
https://creativecommons.org/licenses/by/4.0
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Copyright (c) 2020 Acta Scientiarum. Animal Sciences
https://creativecommons.org/licenses/by/4.0
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 42 (2020): Publicação contínua; e47222
Acta Scientiarum. Animal Sciences; v. 42 (2020): Publicação contínua; e47222
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
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