The response of broilers during three periods of growth to dietary valine
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.anifeedsci.2016.02.017 http://hdl.handle.net/11449/173123 |
Resumo: | In diets based on corn and soybean meal valine is considered the fourth limiting amino acid. Despite that, there have been few studies to date on the response of broilers to dietary valine and most of them use empirical procedures leading to a great variation in the recommendations. Thus, the aim of this study was to quantify the performance and body composition of broiler chickens subjected to different intakes of digestible valine using the dilution technique. Three trials were conducted separately with Cobb 500 broilers in the starter (1-14 days), grower (14-28 days) and finisher phase (28-42 days). In the starter and grower phases, the birds were distributed in a completely randomized design with eight treatments (seven levels of valine and a control treatment), with seven replicates, each consisting of 12 birds for starter and grower phases while 10 birds were used in the finisher phase. Basal diets were formulated by dilution technique, being one summit diet with valine as the first limiting amino acid and diluted with a nitrogen-free diet to obtain the intermediary levels. Valine intake for maximum weight gain, valine deposition, and protein deposition in the defeathered body and feather were estimated with broken-line models. Body fat content was calculated with linear regressions. Results indicate that to maximize performance of broiler chickens across several parameters, the recommended requirement of digestible valine for the starter, grower and finisher diet is 226, 637 and 1231 mg/bird/day, respectively. These recommendations allow achieving optimum performance in the broiler production system but they can be different depending on way birds are sold (whole chicken or cut-up) and age of the birds at slaughter. |
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The response of broilers during three periods of growth to dietary valineBroken-lineRelative responseRequirementValine depositionIn diets based on corn and soybean meal valine is considered the fourth limiting amino acid. Despite that, there have been few studies to date on the response of broilers to dietary valine and most of them use empirical procedures leading to a great variation in the recommendations. Thus, the aim of this study was to quantify the performance and body composition of broiler chickens subjected to different intakes of digestible valine using the dilution technique. Three trials were conducted separately with Cobb 500 broilers in the starter (1-14 days), grower (14-28 days) and finisher phase (28-42 days). In the starter and grower phases, the birds were distributed in a completely randomized design with eight treatments (seven levels of valine and a control treatment), with seven replicates, each consisting of 12 birds for starter and grower phases while 10 birds were used in the finisher phase. Basal diets were formulated by dilution technique, being one summit diet with valine as the first limiting amino acid and diluted with a nitrogen-free diet to obtain the intermediary levels. Valine intake for maximum weight gain, valine deposition, and protein deposition in the defeathered body and feather were estimated with broken-line models. Body fat content was calculated with linear regressions. Results indicate that to maximize performance of broiler chickens across several parameters, the recommended requirement of digestible valine for the starter, grower and finisher diet is 226, 637 and 1231 mg/bird/day, respectively. These recommendations allow achieving optimum performance in the broiler production system but they can be different depending on way birds are sold (whole chicken or cut-up) and age of the birds at slaughter.Department of Animal Sciences Faculdade de Ciências Agrárias e Veterinárias-UNESP, Via de Acesso Paulo Donato CastelllaneDepartment of Animal Production and Nutrition Faculdade de Medicina Veterinária e Zootecnia-USP, Av. Duque de Caxias NorteUniversity of KwaZulu-NatalDepartment of Animal Sciences Faculdade de Ciências Agrárias e Veterinárias-UNESP, Via de Acesso Paulo Donato CastelllaneUniversidade Estadual Paulista (Unesp)Universidade de São Paulo (USP)University of KwaZulu-NatalFerreira, Nayara Tavares [UNESP]Albuquerque, Ricardo deSakomura, Nilva Kazue [UNESP]Dorigam, Juliano César de Paula [UNESP]Silva, Edney Pereira da [UNESP]Burbarelli, Maria Fernanda C.Ferreira, João GuilhermeGous, Robert Mervyn2018-12-11T17:03:44Z2018-12-11T17:03:44Z2016-04-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article110-120application/pdfhttp://dx.doi.org/10.1016/j.anifeedsci.2016.02.017Animal Feed Science and Technology, v. 214, p. 110-120.0377-8401http://hdl.handle.net/11449/17312310.1016/j.anifeedsci.2016.02.0172-s2.0-849757805552-s2.0-84975780555.pdf6152329000274858Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengAnimal Feed Science and Technology0,937info:eu-repo/semantics/openAccess2024-06-07T18:40:52Zoai:repositorio.unesp.br:11449/173123Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T16:42:10.556773Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
The response of broilers during three periods of growth to dietary valine |
title |
The response of broilers during three periods of growth to dietary valine |
spellingShingle |
The response of broilers during three periods of growth to dietary valine Ferreira, Nayara Tavares [UNESP] Broken-line Relative response Requirement Valine deposition |
title_short |
The response of broilers during three periods of growth to dietary valine |
title_full |
The response of broilers during three periods of growth to dietary valine |
title_fullStr |
The response of broilers during three periods of growth to dietary valine |
title_full_unstemmed |
The response of broilers during three periods of growth to dietary valine |
title_sort |
The response of broilers during three periods of growth to dietary valine |
author |
Ferreira, Nayara Tavares [UNESP] |
author_facet |
Ferreira, Nayara Tavares [UNESP] Albuquerque, Ricardo de Sakomura, Nilva Kazue [UNESP] Dorigam, Juliano César de Paula [UNESP] Silva, Edney Pereira da [UNESP] Burbarelli, Maria Fernanda C. Ferreira, João Guilherme Gous, Robert Mervyn |
author_role |
author |
author2 |
Albuquerque, Ricardo de Sakomura, Nilva Kazue [UNESP] Dorigam, Juliano César de Paula [UNESP] Silva, Edney Pereira da [UNESP] Burbarelli, Maria Fernanda C. Ferreira, João Guilherme Gous, Robert Mervyn |
author2_role |
author author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Universidade de São Paulo (USP) University of KwaZulu-Natal |
dc.contributor.author.fl_str_mv |
Ferreira, Nayara Tavares [UNESP] Albuquerque, Ricardo de Sakomura, Nilva Kazue [UNESP] Dorigam, Juliano César de Paula [UNESP] Silva, Edney Pereira da [UNESP] Burbarelli, Maria Fernanda C. Ferreira, João Guilherme Gous, Robert Mervyn |
dc.subject.por.fl_str_mv |
Broken-line Relative response Requirement Valine deposition |
topic |
Broken-line Relative response Requirement Valine deposition |
description |
In diets based on corn and soybean meal valine is considered the fourth limiting amino acid. Despite that, there have been few studies to date on the response of broilers to dietary valine and most of them use empirical procedures leading to a great variation in the recommendations. Thus, the aim of this study was to quantify the performance and body composition of broiler chickens subjected to different intakes of digestible valine using the dilution technique. Three trials were conducted separately with Cobb 500 broilers in the starter (1-14 days), grower (14-28 days) and finisher phase (28-42 days). In the starter and grower phases, the birds were distributed in a completely randomized design with eight treatments (seven levels of valine and a control treatment), with seven replicates, each consisting of 12 birds for starter and grower phases while 10 birds were used in the finisher phase. Basal diets were formulated by dilution technique, being one summit diet with valine as the first limiting amino acid and diluted with a nitrogen-free diet to obtain the intermediary levels. Valine intake for maximum weight gain, valine deposition, and protein deposition in the defeathered body and feather were estimated with broken-line models. Body fat content was calculated with linear regressions. Results indicate that to maximize performance of broiler chickens across several parameters, the recommended requirement of digestible valine for the starter, grower and finisher diet is 226, 637 and 1231 mg/bird/day, respectively. These recommendations allow achieving optimum performance in the broiler production system but they can be different depending on way birds are sold (whole chicken or cut-up) and age of the birds at slaughter. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-04-01 2018-12-11T17:03:44Z 2018-12-11T17:03:44Z |
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/10.1016/j.anifeedsci.2016.02.017 Animal Feed Science and Technology, v. 214, p. 110-120. 0377-8401 http://hdl.handle.net/11449/173123 10.1016/j.anifeedsci.2016.02.017 2-s2.0-84975780555 2-s2.0-84975780555.pdf 6152329000274858 |
url |
http://dx.doi.org/10.1016/j.anifeedsci.2016.02.017 http://hdl.handle.net/11449/173123 |
identifier_str_mv |
Animal Feed Science and Technology, v. 214, p. 110-120. 0377-8401 10.1016/j.anifeedsci.2016.02.017 2-s2.0-84975780555 2-s2.0-84975780555.pdf 6152329000274858 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Animal Feed Science and Technology 0,937 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
110-120 application/pdf |
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_ |
1808128688178331648 |