Response of laying hens to methionine plus cystine intake by dilution technique
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982015000100015&lng=en&nrm=iso&tlng=en http://hdl.handle.net/11449/129181 |
Resumo: | The objective of this study was to measure the response of Dekalb White laying hens to different intakes of digestible methionine + cystine (met+cys) to optimise their performance. Two hundred eighty-eight Dekalb White laying hens, ranging in age from 33 to 48 weeks, were used in the study. The birds were randomly allocated into eight treatment (levels of met+cys and the control treatment) groups with six replicates of six hens per unit. The experimental diets consisted of seven increasing levels of met+cys (1.37, 2.75, 4.14, 5.51, 6.89, 7.92 and 8.95 g kg(-1)) and were prepared using a dilution technique. A control treatment was used to confirm that the limiting response was due to met+cys intake. Egg production, feed intake, egg weight, egg mass and feed conversion per mass were measured. The data were analysed with repeated measures and regression analyses using Broken Line and Quadratic models, as well as using the combination of both models. The different met+cys intakes influenced the studied variables; all the variables except feed conversion per mass were significantly different between the periods and levels. The digestible met+cys intakes based on the association of the Broken Line and Quadratic models to optimise the birds'response to egg mass are 671 mg/bird d for 33 to 36 weeks, 728 mg/bird d for 37 to 40 weeks, 743 mg/bird d for 41 to 44 weeks, and 770 mg/bird d for 45 to 48 weeks. |
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Repositório Institucional da UNESP |
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Response of laying hens to methionine plus cystine intake by dilution techniqueBroken LineDose-responseModelsRequirementStatisticThe objective of this study was to measure the response of Dekalb White laying hens to different intakes of digestible methionine + cystine (met+cys) to optimise their performance. Two hundred eighty-eight Dekalb White laying hens, ranging in age from 33 to 48 weeks, were used in the study. The birds were randomly allocated into eight treatment (levels of met+cys and the control treatment) groups with six replicates of six hens per unit. The experimental diets consisted of seven increasing levels of met+cys (1.37, 2.75, 4.14, 5.51, 6.89, 7.92 and 8.95 g kg(-1)) and were prepared using a dilution technique. A control treatment was used to confirm that the limiting response was due to met+cys intake. Egg production, feed intake, egg weight, egg mass and feed conversion per mass were measured. The data were analysed with repeated measures and regression analyses using Broken Line and Quadratic models, as well as using the combination of both models. The different met+cys intakes influenced the studied variables; all the variables except feed conversion per mass were significantly different between the periods and levels. The digestible met+cys intakes based on the association of the Broken Line and Quadratic models to optimise the birds'response to egg mass are 671 mg/bird d for 33 to 36 weeks, 728 mg/bird d for 37 to 40 weeks, 743 mg/bird d for 41 to 44 weeks, and 770 mg/bird d for 45 to 48 weeks.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Programa de Estudantes-Convenio de Pos-Graduacao (PEC-PG)Univ Estadual Paulista, Fac Ciencias Agr &Vet, Jaboticabal, SP, BrazilUniv Estadual Paulista, Ctr Aquicultura, Jaboticabal, SP, BrazilUniversidade Estadual Paulista "Júlio de Mesquita Filho", Faculdade de Ciências Agrárias e Veterinárias, Jaboticabal, SP, BrasilUniversidade Estadual Paulista "Júlio de Mesquita Filho", Centro de Aquicultura, Jaboticabal, SP, BrasilRevista Brasileira Zootecnia Brazilian Journal Animal SciUniversidade Estadual Paulista (Unesp)Palma Bendezu, Hilda Cristina [UNESP]Sakomura, Nilva Kazue [UNESP]Hauschild, Luciano [UNESP]Silva, Edney Pereira da [UNESP]Paula Dorigam, Juliano Cesar de [UNESP]Malheiros, Euclides Braga [UNESP]Kochenborger Fernandes, Joao Batista [UNESP]2015-10-21T20:32:39Z2015-10-21T20:32:39Z2015-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article15-21application/pdfhttp://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982015000100015&lng=en&nrm=iso&tlng=enRevista Brasileira De Zootecnia-brazilian Journal Of Animal Science. Vicosa-mg: Revista Brasileira Zootecnia Brazilian Journal Animal Sci, v. 44, n. 1, p. 15-21, 2015.1806-9290http://hdl.handle.net/11449/12918110.1590/S1806-92902015000100003S1516-35982015000100015WOS:000348915700003S1516-35982015000100015.pdf16129691831719446152329000274858Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengRevista Brasileira De Zootecnia-brazilian Journal Of Animal Science0.735info:eu-repo/semantics/openAccess2024-04-09T15:37:02Zoai:repositorio.unesp.br:11449/129181Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-04-09T15:37:02Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Response of laying hens to methionine plus cystine intake by dilution technique |
title |
Response of laying hens to methionine plus cystine intake by dilution technique |
spellingShingle |
Response of laying hens to methionine plus cystine intake by dilution technique Palma Bendezu, Hilda Cristina [UNESP] Broken Line Dose-response Models Requirement Statistic |
title_short |
Response of laying hens to methionine plus cystine intake by dilution technique |
title_full |
Response of laying hens to methionine plus cystine intake by dilution technique |
title_fullStr |
Response of laying hens to methionine plus cystine intake by dilution technique |
title_full_unstemmed |
Response of laying hens to methionine plus cystine intake by dilution technique |
title_sort |
Response of laying hens to methionine plus cystine intake by dilution technique |
author |
Palma Bendezu, Hilda Cristina [UNESP] |
author_facet |
Palma Bendezu, Hilda Cristina [UNESP] Sakomura, Nilva Kazue [UNESP] Hauschild, Luciano [UNESP] Silva, Edney Pereira da [UNESP] Paula Dorigam, Juliano Cesar de [UNESP] Malheiros, Euclides Braga [UNESP] Kochenborger Fernandes, Joao Batista [UNESP] |
author_role |
author |
author2 |
Sakomura, Nilva Kazue [UNESP] Hauschild, Luciano [UNESP] Silva, Edney Pereira da [UNESP] Paula Dorigam, Juliano Cesar de [UNESP] Malheiros, Euclides Braga [UNESP] Kochenborger Fernandes, Joao Batista [UNESP] |
author2_role |
author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Palma Bendezu, Hilda Cristina [UNESP] Sakomura, Nilva Kazue [UNESP] Hauschild, Luciano [UNESP] Silva, Edney Pereira da [UNESP] Paula Dorigam, Juliano Cesar de [UNESP] Malheiros, Euclides Braga [UNESP] Kochenborger Fernandes, Joao Batista [UNESP] |
dc.subject.por.fl_str_mv |
Broken Line Dose-response Models Requirement Statistic |
topic |
Broken Line Dose-response Models Requirement Statistic |
description |
The objective of this study was to measure the response of Dekalb White laying hens to different intakes of digestible methionine + cystine (met+cys) to optimise their performance. Two hundred eighty-eight Dekalb White laying hens, ranging in age from 33 to 48 weeks, were used in the study. The birds were randomly allocated into eight treatment (levels of met+cys and the control treatment) groups with six replicates of six hens per unit. The experimental diets consisted of seven increasing levels of met+cys (1.37, 2.75, 4.14, 5.51, 6.89, 7.92 and 8.95 g kg(-1)) and were prepared using a dilution technique. A control treatment was used to confirm that the limiting response was due to met+cys intake. Egg production, feed intake, egg weight, egg mass and feed conversion per mass were measured. The data were analysed with repeated measures and regression analyses using Broken Line and Quadratic models, as well as using the combination of both models. The different met+cys intakes influenced the studied variables; all the variables except feed conversion per mass were significantly different between the periods and levels. The digestible met+cys intakes based on the association of the Broken Line and Quadratic models to optimise the birds'response to egg mass are 671 mg/bird d for 33 to 36 weeks, 728 mg/bird d for 37 to 40 weeks, 743 mg/bird d for 41 to 44 weeks, and 770 mg/bird d for 45 to 48 weeks. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-10-21T20:32:39Z 2015-10-21T20:32:39Z 2015-01-01 |
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://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982015000100015&lng=en&nrm=iso&tlng=en Revista Brasileira De Zootecnia-brazilian Journal Of Animal Science. Vicosa-mg: Revista Brasileira Zootecnia Brazilian Journal Animal Sci, v. 44, n. 1, p. 15-21, 2015. 1806-9290 http://hdl.handle.net/11449/129181 10.1590/S1806-92902015000100003 S1516-35982015000100015 WOS:000348915700003 S1516-35982015000100015.pdf 1612969183171944 6152329000274858 |
url |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982015000100015&lng=en&nrm=iso&tlng=en http://hdl.handle.net/11449/129181 |
identifier_str_mv |
Revista Brasileira De Zootecnia-brazilian Journal Of Animal Science. Vicosa-mg: Revista Brasileira Zootecnia Brazilian Journal Animal Sci, v. 44, n. 1, p. 15-21, 2015. 1806-9290 10.1590/S1806-92902015000100003 S1516-35982015000100015 WOS:000348915700003 S1516-35982015000100015.pdf 1612969183171944 6152329000274858 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Revista Brasileira De Zootecnia-brazilian Journal Of Animal Science 0.735 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
15-21 application/pdf |
dc.publisher.none.fl_str_mv |
Revista Brasileira Zootecnia Brazilian Journal Animal Sci |
publisher.none.fl_str_mv |
Revista Brasileira Zootecnia Brazilian Journal Animal Sci |
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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1803047028146569216 |