Commercial laying hen diets formulated according to different recommendations of total and digestible amino acids
Autor(a) principal: | |
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Data de Publicação: | 2005 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1590/S1516-635X2005000300007 http://hdl.handle.net/11449/4815 |
Resumo: | An experiment was conducted to evaluate different commercial laying hen diets formulated based on recommendations for total and digestible amino acids. One hundred and twenty Lohmann LSL commercial laying hens aged 25 weeks were distributed in a completely randomized experimental design involving five replications of six birds in four treatments. Diet formulation on a total amino acid basis followed the recommendations of NRC (1994) and Rostagno et al. (2000), whereas formulation on digestible amino acids basis was according to Rostagno et al. (2000) and Degussa (1997) recommendations. The experimental period was divided into five periods of fourteen days. Performance parameters (egg production, feed intake, feed conversion, egg mass) were evaluated for each period, and on the last two days of each period, three eggs per replication were collected to evaluate egg quality parameters (Haugh unit, egg specific gravity, egg weight, eggshell thickness and percentage). Means were compared by orthogonal contrasts. Results on feed intake, egg production, egg mass, feed conversion and egg specific gravity showed that total amino acid recommendations promoted better bird responses than digestible amino acid recommendations. |
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Repositório Institucional da UNESP |
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Commercial laying hen diets formulated according to different recommendations of total and digestible amino acidsEgg qualityLayersNutritionPerformancePoultryAn experiment was conducted to evaluate different commercial laying hen diets formulated based on recommendations for total and digestible amino acids. One hundred and twenty Lohmann LSL commercial laying hens aged 25 weeks were distributed in a completely randomized experimental design involving five replications of six birds in four treatments. Diet formulation on a total amino acid basis followed the recommendations of NRC (1994) and Rostagno et al. (2000), whereas formulation on digestible amino acids basis was according to Rostagno et al. (2000) and Degussa (1997) recommendations. The experimental period was divided into five periods of fourteen days. Performance parameters (egg production, feed intake, feed conversion, egg mass) were evaluated for each period, and on the last two days of each period, three eggs per replication were collected to evaluate egg quality parameters (Haugh unit, egg specific gravity, egg weight, eggshell thickness and percentage). Means were compared by orthogonal contrasts. Results on feed intake, egg production, egg mass, feed conversion and egg specific gravity showed that total amino acid recommendations promoted better bird responses than digestible amino acid recommendations.Universidade Estadual Paulista Faculdade de Ciências Agrárias e Veterinárias Departamento de ZootecniaUniversidade Estadual Paulista Faculdade de Ciências Agrárias e Veterinárias Departamento de ZootecniaFundação APINCO de Ciência e Tecnologia AvícolasUniversidade Estadual Paulista (Unesp)Casartelli, em [UNESP]Filardi, RS [UNESP]Junqueira, Otto Mack [UNESP]Laurentiz, AC [UNESP]Assuena, V [UNESP]Duarte, KF [UNESP]2014-05-20T13:18:56Z2014-05-20T13:18:56Z2005-09-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article177-180application/pdfhttp://dx.doi.org/10.1590/S1516-635X2005000300007Revista Brasileira de Ciência Avícola. Fundação APINCO de Ciência e Tecnologia Avícolas, v. 7, n. 3, p. 177-180, 2005.1516-635Xhttp://hdl.handle.net/11449/481510.1590/S1516-635X2005000300007S1516-635X2005000300007S1516-635X2005000300007.pdf8942267939443572SciELOreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengRevista Brasileira de Ciência Avícola0.463info:eu-repo/semantics/openAccess2024-06-07T18:40:13Zoai:repositorio.unesp.br:11449/4815Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T14:34:43.539636Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Commercial laying hen diets formulated according to different recommendations of total and digestible amino acids |
title |
Commercial laying hen diets formulated according to different recommendations of total and digestible amino acids |
spellingShingle |
Commercial laying hen diets formulated according to different recommendations of total and digestible amino acids Casartelli, em [UNESP] Egg quality Layers Nutrition Performance Poultry |
title_short |
Commercial laying hen diets formulated according to different recommendations of total and digestible amino acids |
title_full |
Commercial laying hen diets formulated according to different recommendations of total and digestible amino acids |
title_fullStr |
Commercial laying hen diets formulated according to different recommendations of total and digestible amino acids |
title_full_unstemmed |
Commercial laying hen diets formulated according to different recommendations of total and digestible amino acids |
title_sort |
Commercial laying hen diets formulated according to different recommendations of total and digestible amino acids |
author |
Casartelli, em [UNESP] |
author_facet |
Casartelli, em [UNESP] Filardi, RS [UNESP] Junqueira, Otto Mack [UNESP] Laurentiz, AC [UNESP] Assuena, V [UNESP] Duarte, KF [UNESP] |
author_role |
author |
author2 |
Filardi, RS [UNESP] Junqueira, Otto Mack [UNESP] Laurentiz, AC [UNESP] Assuena, V [UNESP] Duarte, KF [UNESP] |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Casartelli, em [UNESP] Filardi, RS [UNESP] Junqueira, Otto Mack [UNESP] Laurentiz, AC [UNESP] Assuena, V [UNESP] Duarte, KF [UNESP] |
dc.subject.por.fl_str_mv |
Egg quality Layers Nutrition Performance Poultry |
topic |
Egg quality Layers Nutrition Performance Poultry |
description |
An experiment was conducted to evaluate different commercial laying hen diets formulated based on recommendations for total and digestible amino acids. One hundred and twenty Lohmann LSL commercial laying hens aged 25 weeks were distributed in a completely randomized experimental design involving five replications of six birds in four treatments. Diet formulation on a total amino acid basis followed the recommendations of NRC (1994) and Rostagno et al. (2000), whereas formulation on digestible amino acids basis was according to Rostagno et al. (2000) and Degussa (1997) recommendations. The experimental period was divided into five periods of fourteen days. Performance parameters (egg production, feed intake, feed conversion, egg mass) were evaluated for each period, and on the last two days of each period, three eggs per replication were collected to evaluate egg quality parameters (Haugh unit, egg specific gravity, egg weight, eggshell thickness and percentage). Means were compared by orthogonal contrasts. Results on feed intake, egg production, egg mass, feed conversion and egg specific gravity showed that total amino acid recommendations promoted better bird responses than digestible amino acid recommendations. |
publishDate |
2005 |
dc.date.none.fl_str_mv |
2005-09-01 2014-05-20T13:18:56Z 2014-05-20T13:18:56Z |
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/10.1590/S1516-635X2005000300007 Revista Brasileira de Ciência Avícola. Fundação APINCO de Ciência e Tecnologia Avícolas, v. 7, n. 3, p. 177-180, 2005. 1516-635X http://hdl.handle.net/11449/4815 10.1590/S1516-635X2005000300007 S1516-635X2005000300007 S1516-635X2005000300007.pdf 8942267939443572 |
url |
http://dx.doi.org/10.1590/S1516-635X2005000300007 http://hdl.handle.net/11449/4815 |
identifier_str_mv |
Revista Brasileira de Ciência Avícola. Fundação APINCO de Ciência e Tecnologia Avícolas, v. 7, n. 3, p. 177-180, 2005. 1516-635X 10.1590/S1516-635X2005000300007 S1516-635X2005000300007 S1516-635X2005000300007.pdf 8942267939443572 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Revista Brasileira de Ciência Avícola 0.463 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
177-180 application/pdf |
dc.publisher.none.fl_str_mv |
Fundação APINCO de Ciência e Tecnologia Avícolas |
publisher.none.fl_str_mv |
Fundação APINCO de Ciência e Tecnologia Avícolas |
dc.source.none.fl_str_mv |
SciELO 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_ |
1808128380798763008 |