Digestible methionine levels for white-egg layer pullets from 7 to 12 weeks of age
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , , , |
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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Acta Scientiarum. Animal Sciences (Online) |
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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 |
_version_ |
1799315362848702464 |