Evaluation of strain, dietary energy level and stocking density on broiler feathering

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dc.contributor.authorMoreira, J. [UFVJM]
dc.contributor.authorMendes, A. A.
dc.contributor.authorGarcia, R. G.
dc.contributor.authorGarcia, E. A.
dc.contributor.authorRoça, R. O.
dc.contributor.authorNääs, I. A.
dc.contributor.authorDalanezi, J. A.
dc.contributor.authorPelícia, K.
dc.contributor.institutionUniversidade Federal dos Vales do Jequitinhonha e Mucuri (UFVJM)
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.contributor.institutionUniversidade Estadual de Campinas (UNICAMP)
dc.date.accessioned2017-03-06T18:38:25Z
dc.date.available2017-03-06T18:38:25Z
dc.date.issued2006-03-01
dc.description.abstractsThis study evaluated the effects of strain, stocking density and dietary energy level on the feathering of broiler chickens. Four trials were carried out between September 2000 and April 2002. There were 10,685 broiler chicks from the strains Ross 308, Cobb 500, Hybro PG, Hubbard, MPK, and Isa Vedette. The bids were reared at stocking densities varying between 10 and 16 birds/m² and were given diets containing different metabolizable energy levels. Broiler feathering was evaluated either by atrributing scores from 1 to 10 to feather covering along the thigh and back (visual inspection), or by determining the percentage weight of the feathers at 28 and 42 days of age. Increasing rearing densities resulted in poorer feathering, mainly if 12 or 13 birds/m² were compared with 16 birds/m². The strains showed different feathering; it was better in Cobb 500 and MPK birds, whereas Hubbard birds showed poorer feathering, mostly along the back. The energy level in the diet has also affected feathering scores. Medium energy level resulted in better feathering along the back at 28 days, and the low level, in better feathering along the thigh at 35 days of age. Finally, feather scores were better in females than in males.en
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de Minas Gerais (FAPEMIG)
dc.description.sponsorshipEmpresa de Pesquisa Agropecuária de Minas Gerais (EPAMIG)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.identifierhttp://dx.doi.org/10.1590/S1516-635X2006000100002
dc.identifier.citationMOREIRA, J. et al. Evaluation of strain, dietary energy level and stocking density on broiler feathering. Revista Brasileira de Ciência Avícola, Campinas, v. 8, n. 1, p. 15-22, 2006.pt_BR
dc.identifier.doi10.1590/S1516-635X2006000100002
dc.identifier.issn1516-635X
dc.identifier.scieloS1516-635X2006000100002
dc.identifier.urihttps://acervo.ufvjm.edu.br/items/6cfb9ecb-3b83-4624-8b5d-e1b1e4051c72
dc.language.isoeng
dc.publisherFundação APINCO de Ciência e Tecnologia Avícolas
dc.relation.ispartofRevista Brasileira de Ciência Avícola
dc.rights.accessRightsAcesso aberto
dc.sourceSciELO
dc.subject.keywordBroiler chickensen
dc.subject.keywordDietary energyen
dc.subject.keywordFeatheringen
dc.subject.keywordStrainen
dc.subject.keywordStocking densityen
dc.titleEvaluation of strain, dietary energy level and stocking density on broiler featheringen
dc.typeArtigopt_BR

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