Effect of dietary betaine supplementation on the performance, carcass yield, and intestinal morphometrics of broilers submitted to heat stress

Página do item simplificado
dc.contributor.authorSakomura, N. K. [UNESP]
dc.contributor.authorBarbosa, N. A A [UNESP]
dc.contributor.authorLongo, F. A.
dc.contributor.authorda Silva, E. P.
dc.contributor.authorBonato, M. A. [UNESP]
dc.contributor.authorFernandes, J. B K [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionBtech Brasil
dc.date.accessioned2014-05-27T11:30:03Z
dc.date.available2014-05-27T11:30:03Z
dc.date.issued2013-07-30
dc.description.abstractThe objective of this study was to evaluate the effect of betaine in methionine- and choline-reduced diets fed to broilers submitted to heat stress. In total, 1,408 male broilers were randomly distributed into eight treatments, according to 2 × 4 (environment x diet) factorial arrangement, with eight replicates of 2 birds each. Birds were reared environmental chambers under controlled temperature (25-26 °C) or cyclic heat-stressing temperature (25-31 °C). The following diets were tested: positive control (PC), formulated to meet broiler nutritional requirements; negative control (NC), with reduced DL-methionine and choline chloride levels; and with two supplementation levels of natural betaine to the negative control diet (NC+NB1 and NC+NB2). Live performance, carcass traits, and intestinal morphometrics were evaluated when broilers were 45 days of age. The results showed that all evaluated parameters were influenced by the interaction between environment and diet, except for breast meat drip loss. The breakdown of the interactions showed that birds fed the PC diet and reared in the controlled environment had greater breast drip loss than those submitted to the cyclic heat-stress environment. Birds submitted to cyclic heat stress and fed the PC diet presented the lowest feed intake. Feed conversion ratio was influenced only by diet. The FCR of broilers fed the NC+NB2 diet was intermediate relative to those fed the PC and NC diets. The addition of betaine in the diet, with 11.18% digestible methionine and 24.73% total choline reductions, did not affect broiler live performance, carcass yield, or intestinal morphometrics.en
dc.description.affiliationDepartment of Animal Science School of Agricultural and Veterinary Sciences Universidade Estadual Paulista Júlio de Mesquita Filho, Jaboticabal, São Paulo
dc.description.affiliationBtech Brasil, São Paulo
dc.description.affiliationAquaculture Center Universidade Estadual Paulista Júlio de Mesquita Filho, Jaboticabal, São Paulo
dc.description.affiliationUnespDepartment of Animal Science School of Agricultural and Veterinary Sciences Universidade Estadual Paulista Júlio de Mesquita Filho, Jaboticabal, São Paulo
dc.description.affiliationUnespAquaculture Center Universidade Estadual Paulista Júlio de Mesquita Filho, Jaboticabal, São Paulo
dc.format.extent105-111
dc.identifierhttp://dx.doi.org/10.1590/S1516-635X2013000200005
dc.identifier.citationRevista Brasileira de Ciencia Avicola, v. 15, n. 2, p. 105-111, 2013.
dc.identifier.doi10.1590/S1516-635X2013000200005
dc.identifier.file2-s2.0-84880634455.pdf
dc.identifier.issn1516-635X
dc.identifier.scieloS1516-635X2013000200005
dc.identifier.scopus2-s2.0-84880634455
dc.identifier.urihttp://hdl.handle.net/11449/76073
dc.identifier.wosWOS:000326811000005
dc.language.isoeng
dc.relation.ispartofRevista Brasileira de Ciência Avícola
dc.relation.ispartofjcr0.463
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectAdditivesen
dc.subjectEnvironmenten
dc.subjectMethionineen
dc.subjectTemperatureen
dc.titleEffect of dietary betaine supplementation on the performance, carcass yield, and intestinal morphometrics of broilers submitted to heat stressen
dc.typeArtigo
dcterms.licensehttp://www.scielo.br/revistas/rbca/iaboutj.htm#03

Arquivos

Pacote Original
Agora exibindo 1 - 1 de 1
Imagem de Miniatura
Nome:
2-s2.0-84880634455.pdf
Tamanho:
464.9 KB
Formato:
Adobe Portable Document Format
Baixar

Coleções

Jaboticabal - CAUNESP - Centro de Aquicultura da Unesp