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dc.contributor.authorPereira, M. C. [UNESP]
dc.contributor.authorMercadante, M. E. Z.
dc.contributor.authorRazook, A. G.
dc.contributor.authorFigueiredo, L. A.
dc.contributor.authorAlbuquerque, Lucia Galvão de [UNESP]
dc.identifier.citationSouth African Journal of Animal Science. Hatfield: South African Journal of Animal Sciences, v. 38, n. 2, p. 136-144, 2008.
dc.description.abstractData from 1 698 animals belonging to all experimental Caracu herd were analysed with the objective of calculating the Population selection differentials, generation intervals, effective size and inbreeding coefficients, and to estimate the direct and correlated responses for growth traits after 23) years of selection for post-weaning weight. The following traits were analysed: birth weight (BW), weaning weight corrected to 2 10 days of age (W210), weight corrected to 378 days for the males (W378), weight corrected to 550 days for the females (W550) and hip height for the males (HGTm) at the end of a feedlot test, and for the females (HGTf) at 550 days of age. The sire (W378) and dam (W550) weighted selection differentials for post-weaning weight were 1.10 and 0.28 standard deviation units and generation intervals 5.2 and 6.2 years, respectively. Mean inbreeding coefficient increased in the last five years, from 0.49 to 1.95%. The heritability estimates were 0.38, 0.27, 0.36, 0.37, 0.35 and 0.41 for BW, W210, W378, W550, HGTm and HGTf, respectively. The annual genetic trend estimates were 0.98 +/- 0.17 kg/year for W378 and 0.27 +/- 0.15 kg/year for W550. The estimates for the correlated responses to selection were 0.08 +/- 0.02 kg/year for BW, 0.48 +/- 0.11 kg/year for W210, 0.06 +/- 0.02 cm/year for HGTm and 0.02 +/- 0.02 cm/year for HGTf. These results confirmed that direct selection for post-weaning weight based oil individual performance was relatively effective in achieving progress in all the growth traits.en
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.publisherSouth African Journal of Animal Sciences
dc.relation.ispartofSouth African Journal of Animal Science
dc.sourceWeb of Science
dc.subjectBeef cattleen
dc.subjectCreole bovineen
dc.subjectexperimental herden
dc.subjectgenetic trenden
dc.subjecttropical adapted breeden
dc.titleResults of 23 years of selection for post-weaning weight in a Caracu beef herden
dcterms.rightsHolderSouth African Journal of Animal Sciences
dc.contributor.institutionInst Zootecnia
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.description.affiliationInst Zootecnia, Estacao Expt Zootecnia Sertaozinho, BR-14160000 Sertaozinho, SP, Brazil
dc.description.affiliationUNESP, Fac Ciencias Agr & Vet, BR-14884000 Jaboticabal, SP, Brazil
dc.description.affiliationUnespUNESP, Fac Ciencias Agr & Vet, BR-14884000 Jaboticabal, SP, Brazil
dc.rights.accessRightsAcesso aberto
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Ciências Agrárias e Veterinárias, Jaboticabalpt
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