Effect of free-choice feeding on the performance and ileal digestibility of nutrients in broilers

Detalhes bibliográficos
Autor(a) principal: Cruz, V C [UNESP]
Data de Publicação: 2005
Outros Autores: Pezzato, Antonio Celso [UNESP], Pinheiro, D F [UNESP], Gonçalves, J C [UNESP], Sartori, José Roberto [UNESP]
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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spelling 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
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