Productive features of broiler chickens in hot weather: Effects of strain and sex

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dc.contributor.authorDo Nascimento, Dáphinne Cardoso Nagib
dc.contributor.authorDourado, Leilane Rocha Barros
dc.contributor.authorDe Siqueira, Jefferson Costa
dc.contributor.authorDe Lima, Stélio Bezerra Pinheiro
dc.contributor.authorDa Conceição Macêdo Da Silva, Melina
dc.contributor.authorDa Silva, Gabriela Gome
dc.contributor.authorSakomura, Nilva Kazue [UNESP]
dc.contributor.authorDe Campos Ferreira, Guilherme José Bolzani
dc.contributor.authorBiagiotti, Daniel
dc.contributor.institutionUFPI
dc.contributor.institutionUFMA
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2018-12-11T17:37:13Z
dc.date.available2018-12-11T17:37:13Z
dc.date.issued2018-03-01
dc.description.abstractThe objective of the present study was to evaluate the performance of broiler strains (Cobb 500, Ross 308, and Hubbard Flex) in hot weather. Environmental temperatures above thermal comfort trigger responses of the animals to maintain homeothermia, which negatively affects productive performance. A total of 2, 160 chicks of both sexes, were distributed in an experimental design that was completely randomized in a factorial arrangement of 3 × 2 (strains and sexes) with six replicates of 60 birds each. Feed intake (FI), live weight (LW), weight gain (WG), and feed conversion (FC) were analyzed at periods of 1-7, 1-21, 1-28, 1-42, and 1-49 days old. At 42 and 49 days old, the carcass weight (CW), carcass yield (CY), breast yield (BY), thigh yield (TY), and drumstick yield (DY) were analyzed. The strains differed in LW and WG in most periods, especially for Cobb broilers in the pre-start period (1-7 days) and Hubbard broilers in the last two periods (1-42 and 1-49 days). Except for the pre-initial stage, which there was no influence of the strains on FC, the Hubbard broilers showed the best FC, at 1-49 d, similarly to Cobb broilers. Regardless of strain, the males showed superior performance to that of females. At 42 d, the Cobb broilers showed a superior BY to that of the other strains, presenting better TY than did the Ross and Hubbard strains. At 49 d, the Cobb and Ross strains showed the best BY, with the Hubbard strain having the greatest DY. Males showed higher values in cut yields, except in the BY in which females showed better results.en
dc.description.affiliationUniversidade Federal do Piauí UFPI
dc.description.affiliationUFPI
dc.description.affiliationUniversidade Federal do Maranhão UFMA
dc.description.affiliationUniversidade Estadual Paulista UNESP
dc.description.affiliationUnespUniversidade Estadual Paulista UNESP
dc.format.extent731-745
dc.identifierhttp://dx.doi.org/10.5433/1679-0359.2018v39n2p731
dc.identifier.citationSemina:Ciencias Agrarias, v. 39, n. 2, p. 731-745, 2018.
dc.identifier.doi10.5433/1679-0359.2018v39n2p731
dc.identifier.issn1679-0359
dc.identifier.issn1676-546X
dc.identifier.lattes6152329000274858
dc.identifier.scopus2-s2.0-85047641717
dc.identifier.urihttp://hdl.handle.net/11449/179902
dc.language.isoeng
dc.relation.ispartofSemina:Ciencias Agrarias
dc.relation.ispartofsjr0,320
dc.rights.accessRightsAcesso restrito
dc.sourceScopus
dc.subjectCarcass yield
dc.subjectGenetics
dc.subjectPoultry industry
dc.titleProductive features of broiler chickens in hot weather: Effects of strain and sexen
dc.typeArtigo
unesp.author.lattes6152329000274858

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