Digestible threonine-to-lysine ratio in diets for brown egg-laying hens

Detalhes bibliográficos
Autor(a) principal: Lelis, Guilherme R.
Data de Publicação: 2019
Outros Autores: Tavernari, Fernando de C., Calderano, Arele A., Dalla Costa, Filipe A. [UNESP], Albino, Luiz F. T., Rostagno, Horacio S., Brito, Claudson O., Araujo, Wagner A. G. de, Ribeiro Junior, Valdir
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.3382/japr/pfy057
http://hdl.handle.net/11449/184654
Resumo: The objective of this study was to evaluate the levels of digestible threonine to determine the ideal digestible threonine-to-lysine ratio in the diet of brown egg-laying hens aged 42-54 wk. A total of 270 Dekalb Brown hens were used in a completely randomized design (5 treatments x 9 replicates x 6 birds = 270 birds). Five different ratios of digestible threonine-to-lysine were evaluated: 66% (0.435% Thr dig), 70%, 74%, 78%, and 82%. The diets were formulated to satisfy the animals' nutritional requirements and amino acid relationships (2,950 Kcal/Kg ME and 14.81% CP), with the exception of threonine and lysine. The ratio of digestible threonine-to-lysine was obtained by L-Threonine (98%) supplementation in place of starch. Parameters such as feed intake (g/bird/d), egg production (%), egg weight (g), egg mass (g), feed (kg/dz and g/g), relative weight of egg components (% yolk, albumen, and eggshell), and weight gain (g) were evaluated. As a result, feed intake, egg weight, relative weight of egg components, and weight gain were found not to be influenced by the digestible threonine-to-lysine ratio used. Egg production, egg mass, and feed conversion (kg/dz and g/g) displayed a quadratic effect for the different ratios used. Based on the results, the digestible threonine-to-lysine ratio recommended in the diets of laying hens between 42 and 54 wk of age is 72%, which corresponds to 0.478% of digestible threonine or 460 mg/bird/d of digestible threonine.
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spelling Digestible threonine-to-lysine ratio in diets for brown egg-laying hensEgg massdigestible amino acidegg productionlysinethreoninelaying hensThe objective of this study was to evaluate the levels of digestible threonine to determine the ideal digestible threonine-to-lysine ratio in the diet of brown egg-laying hens aged 42-54 wk. A total of 270 Dekalb Brown hens were used in a completely randomized design (5 treatments x 9 replicates x 6 birds = 270 birds). Five different ratios of digestible threonine-to-lysine were evaluated: 66% (0.435% Thr dig), 70%, 74%, 78%, and 82%. The diets were formulated to satisfy the animals' nutritional requirements and amino acid relationships (2,950 Kcal/Kg ME and 14.81% CP), with the exception of threonine and lysine. The ratio of digestible threonine-to-lysine was obtained by L-Threonine (98%) supplementation in place of starch. Parameters such as feed intake (g/bird/d), egg production (%), egg weight (g), egg mass (g), feed (kg/dz and g/g), relative weight of egg components (% yolk, albumen, and eggshell), and weight gain (g) were evaluated. As a result, feed intake, egg weight, relative weight of egg components, and weight gain were found not to be influenced by the digestible threonine-to-lysine ratio used. Egg production, egg mass, and feed conversion (kg/dz and g/g) displayed a quadratic effect for the different ratios used. Based on the results, the digestible threonine-to-lysine ratio recommended in the diets of laying hens between 42 and 54 wk of age is 72%, which corresponds to 0.478% of digestible threonine or 460 mg/bird/d of digestible threonine.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Fundação de Amparo à Pesquisa do Estado de Minas Gerais (FAPEMIG)Vale Fertilizantes SA, BR-38044795 Uberaba, MG, BrazilEmbrapa Suinos & Aves, BR-89700000 Concordia, SC, BrazilUniv Fed Vicosa, BR-36570900 Vicosa, MG, BrazilUniv Estadual Paulista, BR-14884900 Jaboticabal, SP, BrazilUniv Fed Sergipe, BR-49100000 Sao Cristovao, SE, BrazilUniv Fed Sergipe, BR-49060108 Aracaju, SE, BrazilUniv Estadual Paulista, BR-14884900 Jaboticabal, SP, BrazilOxford Univ PressVale Fertilizantes SAEmpresa Brasileira de Pesquisa Agropecuária (EMBRAPA)Universidade Federal de Viçosa (UFV)Universidade Estadual Paulista (Unesp)Universidade Federal de Sergipe (UFS)Lelis, Guilherme R.Tavernari, Fernando de C.Calderano, Arele A.Dalla Costa, Filipe A. [UNESP]Albino, Luiz F. T.Rostagno, Horacio S.Brito, Claudson O.Araujo, Wagner A. G. deRibeiro Junior, Valdir2019-10-04T12:15:38Z2019-10-04T12:15:38Z2019-03-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article145-152http://dx.doi.org/10.3382/japr/pfy057Journal Of Applied Poultry Research. Oxford: Oxford Univ Press, v. 28, n. 1, p. 145-152, 2019.1056-6171http://hdl.handle.net/11449/18465410.3382/japr/pfy057WOS:000482123600016Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal Of Applied Poultry Researchinfo:eu-repo/semantics/openAccess2021-10-23T15:54:51Zoai:repositorio.unesp.br:11449/184654Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T18:31:44.217546Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Digestible threonine-to-lysine ratio in diets for brown egg-laying hens
title Digestible threonine-to-lysine ratio in diets for brown egg-laying hens
spellingShingle Digestible threonine-to-lysine ratio in diets for brown egg-laying hens
Lelis, Guilherme R.
Egg mass
digestible amino acid
egg production
lysine
threonine
laying hens
title_short Digestible threonine-to-lysine ratio in diets for brown egg-laying hens
title_full Digestible threonine-to-lysine ratio in diets for brown egg-laying hens
title_fullStr Digestible threonine-to-lysine ratio in diets for brown egg-laying hens
title_full_unstemmed Digestible threonine-to-lysine ratio in diets for brown egg-laying hens
title_sort Digestible threonine-to-lysine ratio in diets for brown egg-laying hens
author Lelis, Guilherme R.
author_facet Lelis, Guilherme R.
Tavernari, Fernando de C.
Calderano, Arele A.
Dalla Costa, Filipe A. [UNESP]
Albino, Luiz F. T.
Rostagno, Horacio S.
Brito, Claudson O.
Araujo, Wagner A. G. de
Ribeiro Junior, Valdir
author_role author
author2 Tavernari, Fernando de C.
Calderano, Arele A.
Dalla Costa, Filipe A. [UNESP]
Albino, Luiz F. T.
Rostagno, Horacio S.
Brito, Claudson O.
Araujo, Wagner A. G. de
Ribeiro Junior, Valdir
author2_role author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Vale Fertilizantes SA
Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA)
Universidade Federal de Viçosa (UFV)
Universidade Estadual Paulista (Unesp)
Universidade Federal de Sergipe (UFS)
dc.contributor.author.fl_str_mv Lelis, Guilherme R.
Tavernari, Fernando de C.
Calderano, Arele A.
Dalla Costa, Filipe A. [UNESP]
Albino, Luiz F. T.
Rostagno, Horacio S.
Brito, Claudson O.
Araujo, Wagner A. G. de
Ribeiro Junior, Valdir
dc.subject.por.fl_str_mv Egg mass
digestible amino acid
egg production
lysine
threonine
laying hens
topic Egg mass
digestible amino acid
egg production
lysine
threonine
laying hens
description The objective of this study was to evaluate the levels of digestible threonine to determine the ideal digestible threonine-to-lysine ratio in the diet of brown egg-laying hens aged 42-54 wk. A total of 270 Dekalb Brown hens were used in a completely randomized design (5 treatments x 9 replicates x 6 birds = 270 birds). Five different ratios of digestible threonine-to-lysine were evaluated: 66% (0.435% Thr dig), 70%, 74%, 78%, and 82%. The diets were formulated to satisfy the animals' nutritional requirements and amino acid relationships (2,950 Kcal/Kg ME and 14.81% CP), with the exception of threonine and lysine. The ratio of digestible threonine-to-lysine was obtained by L-Threonine (98%) supplementation in place of starch. Parameters such as feed intake (g/bird/d), egg production (%), egg weight (g), egg mass (g), feed (kg/dz and g/g), relative weight of egg components (% yolk, albumen, and eggshell), and weight gain (g) were evaluated. As a result, feed intake, egg weight, relative weight of egg components, and weight gain were found not to be influenced by the digestible threonine-to-lysine ratio used. Egg production, egg mass, and feed conversion (kg/dz and g/g) displayed a quadratic effect for the different ratios used. Based on the results, the digestible threonine-to-lysine ratio recommended in the diets of laying hens between 42 and 54 wk of age is 72%, which corresponds to 0.478% of digestible threonine or 460 mg/bird/d of digestible threonine.
publishDate 2019
dc.date.none.fl_str_mv 2019-10-04T12:15:38Z
2019-10-04T12:15:38Z
2019-03-01
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/10.3382/japr/pfy057
Journal Of Applied Poultry Research. Oxford: Oxford Univ Press, v. 28, n. 1, p. 145-152, 2019.
1056-6171
http://hdl.handle.net/11449/184654
10.3382/japr/pfy057
WOS:000482123600016
url http://dx.doi.org/10.3382/japr/pfy057
http://hdl.handle.net/11449/184654
identifier_str_mv Journal Of Applied Poultry Research. Oxford: Oxford Univ Press, v. 28, n. 1, p. 145-152, 2019.
1056-6171
10.3382/japr/pfy057
WOS:000482123600016
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Journal Of Applied Poultry Research
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 145-152
dc.publisher.none.fl_str_mv Oxford Univ Press
publisher.none.fl_str_mv Oxford Univ Press
dc.source.none.fl_str_mv Web of Science
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
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