Effect of free-choice feeding on the performance and ileal digestibility of nutrients in broilers
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/S1516-635X2005000300002 http://hdl.handle.net/11449/14091 |
Resumo: | An experiment was conducted to study ileal digestibility of nutrients and to verify the ability of broilers to select feed in order to meet their requirements for protein and energy. The treatments consisted of six diets: R+S: free-choice feeding with rice bran (energy) and soybean meal (protein); C+G: free-choice feeding with corn (energy) and corn gluten meal (protein); R+G: free-choice feeding with rice bran (energy) and corn gluten meal (protein); C+S: free-choice feeding with corn (energy) and soybean meal (protein); R+C+G+S: free-choice feeding with rice bran and corn (energy) and corn gluten meal and soybean meal (protein); and BD: basal diet represented by a complete diet composed of 63% corn and 33% soybean meal. The results indicated that the adjustment to nutritional requirements does not depend only on the ability of birds to select feed. It might also depend on intake and ingredient quality, since some ingredients did not provide a balanced amount of nutrients. The birds were able to fulfill their requirements for maintenance, that is, they consumed the minimum amount of amino acids (g per day) for maximum growth. The free-choice group with corn gluten meal as the protein source had the worst performance, which indicated that this feed is not recommended as a primary source of amino acids for broilers. The C+G diet presented the highest digestibility coefficient of dry matter and crude protein, whereas the C+S diet resulted in the highest digestibility coefficient of ether extract and nitrogen-free extract, indicating that diet digestibility was affected by the type of feed used as energy and protein sources. In general, the high digestibility values indicate that broilers are able to efficiently digest and absorb the supplied feed. |
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Effect of free-choice feeding on the performance and ileal digestibility of nutrients in broilersBroilerdigestibility coefficientfree-choice feedingperformanceAn experiment was conducted to study ileal digestibility of nutrients and to verify the ability of broilers to select feed in order to meet their requirements for protein and energy. The treatments consisted of six diets: R+S: free-choice feeding with rice bran (energy) and soybean meal (protein); C+G: free-choice feeding with corn (energy) and corn gluten meal (protein); R+G: free-choice feeding with rice bran (energy) and corn gluten meal (protein); C+S: free-choice feeding with corn (energy) and soybean meal (protein); R+C+G+S: free-choice feeding with rice bran and corn (energy) and corn gluten meal and soybean meal (protein); and BD: basal diet represented by a complete diet composed of 63% corn and 33% soybean meal. The results indicated that the adjustment to nutritional requirements does not depend only on the ability of birds to select feed. It might also depend on intake and ingredient quality, since some ingredients did not provide a balanced amount of nutrients. The birds were able to fulfill their requirements for maintenance, that is, they consumed the minimum amount of amino acids (g per day) for maximum growth. The free-choice group with corn gluten meal as the protein source had the worst performance, which indicated that this feed is not recommended as a primary source of amino acids for broilers. The C+G diet presented the highest digestibility coefficient of dry matter and crude protein, whereas the C+S diet resulted in the highest digestibility coefficient of ether extract and nitrogen-free extract, indicating that diet digestibility was affected by the type of feed used as energy and protein sources. In general, the high digestibility values indicate that broilers are able to efficiently digest and absorb the supplied feed.Universidade Estadual Paulista Faculdade de Medicina Veterinária e Zootecnia Departamento de Melhoramento e Nutrição AnimalUniversidade Estadual Paulista Faculdade de Medicina Veterinária e Zootecnia Departamento de Melhoramento e Nutrição AnimalFundação APINCO de Ciência e Tecnologia AvícolasUniversidade Estadual Paulista (Unesp)Cruz, V C [UNESP]Pezzato, Antonio Celso [UNESP]Pinheiro, D F [UNESP]Gonçalves, J C [UNESP]Sartori, José Roberto [UNESP]2013-09-30T18:27:16Z2014-05-20T13:40:35Z2013-09-30T18:27:16Z2014-05-20T13:40:35Z2005-09-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article143-150application/pdfhttp://dx.doi.org/10.1590/S1516-635X2005000300002Revista Brasileira de Ciência Avícola. Fundação APINCO de Ciência e Tecnologia Avícolas, v. 7, n. 3, p. 143-150, 2005.1516-635Xhttp://hdl.handle.net/11449/1409110.1590/S1516-635X2005000300002S1516-635X2005000300002S1516-635X2005000300002.pdf92299843159826632714999125459575SciELOreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengRevista Brasileira de Ciência Avícola0.463info:eu-repo/semantics/openAccess2024-09-06T18:55:11Zoai:repositorio.unesp.br:11449/14091Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestrepositoriounesp@unesp.bropendoar:29462024-09-06T18:55:11Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Effect of free-choice feeding on the performance and ileal digestibility of nutrients in broilers |
title |
Effect of free-choice feeding on the performance and ileal digestibility of nutrients in broilers |
spellingShingle |
Effect of free-choice feeding on the performance and ileal digestibility of nutrients in broilers Cruz, V C [UNESP] Broiler digestibility coefficient free-choice feeding performance |
title_short |
Effect of free-choice feeding on the performance and ileal digestibility of nutrients in broilers |
title_full |
Effect of free-choice feeding on the performance and ileal digestibility of nutrients in broilers |
title_fullStr |
Effect of free-choice feeding on the performance and ileal digestibility of nutrients in broilers |
title_full_unstemmed |
Effect of free-choice feeding on the performance and ileal digestibility of nutrients in broilers |
title_sort |
Effect of free-choice feeding on the performance and ileal digestibility of nutrients in broilers |
author |
Cruz, V C [UNESP] |
author_facet |
Cruz, V C [UNESP] Pezzato, Antonio Celso [UNESP] Pinheiro, D F [UNESP] Gonçalves, J C [UNESP] Sartori, José Roberto [UNESP] |
author_role |
author |
author2 |
Pezzato, Antonio Celso [UNESP] Pinheiro, D F [UNESP] Gonçalves, J C [UNESP] Sartori, José Roberto [UNESP] |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Cruz, V C [UNESP] Pezzato, Antonio Celso [UNESP] Pinheiro, D F [UNESP] Gonçalves, J C [UNESP] Sartori, José Roberto [UNESP] |
dc.subject.por.fl_str_mv |
Broiler digestibility coefficient free-choice feeding performance |
topic |
Broiler digestibility coefficient free-choice feeding performance |
description |
An experiment was conducted to study ileal digestibility of nutrients and to verify the ability of broilers to select feed in order to meet their requirements for protein and energy. The treatments consisted of six diets: R+S: free-choice feeding with rice bran (energy) and soybean meal (protein); C+G: free-choice feeding with corn (energy) and corn gluten meal (protein); R+G: free-choice feeding with rice bran (energy) and corn gluten meal (protein); C+S: free-choice feeding with corn (energy) and soybean meal (protein); R+C+G+S: free-choice feeding with rice bran and corn (energy) and corn gluten meal and soybean meal (protein); and BD: basal diet represented by a complete diet composed of 63% corn and 33% soybean meal. The results indicated that the adjustment to nutritional requirements does not depend only on the ability of birds to select feed. It might also depend on intake and ingredient quality, since some ingredients did not provide a balanced amount of nutrients. The birds were able to fulfill their requirements for maintenance, that is, they consumed the minimum amount of amino acids (g per day) for maximum growth. The free-choice group with corn gluten meal as the protein source had the worst performance, which indicated that this feed is not recommended as a primary source of amino acids for broilers. The C+G diet presented the highest digestibility coefficient of dry matter and crude protein, whereas the C+S diet resulted in the highest digestibility coefficient of ether extract and nitrogen-free extract, indicating that diet digestibility was affected by the type of feed used as energy and protein sources. In general, the high digestibility values indicate that broilers are able to efficiently digest and absorb the supplied feed. |
publishDate |
2005 |
dc.date.none.fl_str_mv |
2005-09-01 2013-09-30T18:27:16Z 2013-09-30T18:27:16Z 2014-05-20T13:40:35Z 2014-05-20T13:40:35Z |
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/S1516-635X2005000300002 Revista Brasileira de Ciência Avícola. Fundação APINCO de Ciência e Tecnologia Avícolas, v. 7, n. 3, p. 143-150, 2005. 1516-635X http://hdl.handle.net/11449/14091 10.1590/S1516-635X2005000300002 S1516-635X2005000300002 S1516-635X2005000300002.pdf 9229984315982663 2714999125459575 |
url |
http://dx.doi.org/10.1590/S1516-635X2005000300002 http://hdl.handle.net/11449/14091 |
identifier_str_mv |
Revista Brasileira de Ciência Avícola. Fundação APINCO de Ciência e Tecnologia Avícolas, v. 7, n. 3, p. 143-150, 2005. 1516-635X 10.1590/S1516-635X2005000300002 S1516-635X2005000300002 S1516-635X2005000300002.pdf 9229984315982663 2714999125459575 |
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 |
143-150 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 |
repositoriounesp@unesp.br |
_version_ |
1813546585024364544 |