Body growth description of male and female from three broilers strains in the hot climate

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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.authorDas Chagas Fontenele De Albuquerque, Francisca
dc.contributor.authorMarques, Roberto Melo
dc.contributor.authorMarcato, Simara Marcia
dc.contributor.authorSakomura, Nilva Kazue [UNESP]
dc.contributor.authorFarias, Leonardo Atta
dc.contributor.institutionUFMA
dc.contributor.institutionUFPI
dc.contributor.institutionUniversidade Estadual de Maringá (UEM)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2020-12-12T02:38:44Z
dc.date.available2020-12-12T02:38:44Z
dc.date.issued2020-01-01
dc.description.abstractTo evaluate the growth of males and females from three broiler strains (Cobb 500, Ross 308, and Hubbard Flex) we used a completely randomized experimental design with a factorial arrangement (3 strains and 2 sexes) and six replicates of 60 birds each, 2160 chicks of both sexes in total followed for 56 days. Once a week, the birds from each pen were weighed to estimate the average weight. The sample birds were fasted for 24 hours, re-weighed, slaughtered, eviscerated, and dissected to obtain the breast, thigh and drumstick cuts. The fitted Gompertz equations were used for each strain, and sex, for the fasted weight, and the weight of breasts, thighs, and drumsticks. To verify the effect of strain on the Gompertz curve parameters we assessed the weight at maturity (Wm), rate of maturing (b), and the time at which maximum growth rate was attained (t∗) for both sexes and verified the equivalence of parameters and identity of non-linear models. For the fasted weight the rate of maturing was very similar for all strains and sexes, but the Hubbard strain showed the highest Wm and t∗. The Wm parameter was common for most cuts among the strains, and the Hubbard was the dominant strain with the highest b parameter. All three parameters were similar for the male breast weight, and only one equation required adjustment to describe the breast weight growth for the three strains. Individually adjusted equations were necessary to describe the weight of drumsticks because females showed no similarity in any of the parameters for any strain.en
dc.description.affiliationPrograma de Pós-Graduação em Ciência Animal Universidade Federal do Maranhão UFMA
dc.description.affiliationUniversidade Federal do Piauí UFPI
dc.description.affiliationUFMA
dc.description.affiliationCurso de Graduação em Zootecnia UFPI
dc.description.affiliationUniversidade Estadual de Maringá UEM
dc.description.affiliationUniversidade Estadual Paulista Julio De Mesquita Filho UNESP
dc.description.affiliationUnespUniversidade Estadual Paulista Julio De Mesquita Filho UNESP
dc.format.extent925-944
dc.identifierhttp://dx.doi.org/10.5433/1679-0359.2020v41n3p925
dc.identifier.citationSemina:Ciencias Agrarias, v. 41, n. 3, p. 925-944, 2020.
dc.identifier.doi10.5433/1679-0359.2020v41n3p925
dc.identifier.issn1679-0359
dc.identifier.issn1676-546X
dc.identifier.lattes6152329000274858
dc.identifier.orcid0000-0001-5707-4113
dc.identifier.scopus2-s2.0-85082937823
dc.identifier.urihttp://hdl.handle.net/11449/201673
dc.language.isoeng
dc.relation.ispartofSemina:Ciencias Agrarias
dc.sourceScopus
dc.subjectCarcass yield
dc.subjectGenetic
dc.subjectPoultry industry
dc.titleBody growth description of male and female from three broilers strains in the hot climateen
dc.typeArtigo
unesp.author.lattes6152329000274858[7]
unesp.author.orcid0000-0001-5707-4113[7]

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