Genetic associations between accumulated productivity, and reproductive and growth traits in Nelore cattle

Página do item simplificado
dc.contributor.authorGrossi, D. A. [UNESP]
dc.contributor.authorFrizzas, O. G. [UNESP]
dc.contributor.authorPaz, C. C. P.
dc.contributor.authorBezerra, L. A. F.
dc.contributor.authorLobo, R. B.
dc.contributor.authorOliveira, J. A. [UNESP]
dc.contributor.authorMunari, D. P. [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionAgência Paulista de Tecnologia dos Agronegócios (APTA)
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.date.accessioned2014-05-20T13:13:43Z
dc.date.available2014-05-20T13:13:43Z
dc.date.issued2008-09-01
dc.description.abstractThe total meat yield in a beef cattle production cycle is economically very important and depends on the number of calves born per year or birth season, being directly related to reproductive potential. Accumulated Productivity (ACP) is an index that expresses a cow's capacity to give birth regularly at a young age and to wean animals of greater body weight. Using data from cattle participating in the "Program for Genetic Improvement of the Nelore Breed" (PMGRN - Nelore Brasil), bi-trait analyses were performed using the Restricted Maximum Likelihood method based on an ACP animal model and the following traits: age at first calving (AFC), female body weight adjusted for 365 (BW365) and 450 (BW450) days of age, and male scrotal circumference adjusted for 365 (SC365), 450 (SC450), 550 (SC550) and 730 (SC730) days of age. Median estimated ACP heritability was 0.19 and the genetic correlations with AFC, BW365, BW450, SC365, SC450, SC550 and SC730 were 0.33, 0.70, 0.65, 0.08, 0.07, 0.12 and 0.16, respectively. ACP increased and AFC decreased over time, revealing that the selection criteria genetically improved these traits. Selection based on ACP appears to favor the heaviest females at 365 and 450 days of age who showed better reproductive performance as regards AFC. Scrotal circumference was not genetically associated with ACP. (C) 2007 Elsevier B.V. All rights reserved.en
dc.description.affiliationFCAV UNESP, Dept Ciencias Exatas, São Paulo, Brazil
dc.description.affiliationAPTA SAA, São Paulo, Brazil
dc.description.affiliationUniv São Paulo, FMRP, Dept Genet, BR-09500900 São Paulo, Brazil
dc.description.affiliationUnespFCAV UNESP, Dept Ciencias Exatas, São Paulo, Brazil
dc.format.extent139-146
dc.identifierhttp://dx.doi.org/10.1016/j.livsci.2007.12.007
dc.identifier.citationLivestock Science. Amsterdam: Elsevier B.V., v. 117, n. 2-3, p. 139-146, 2008.
dc.identifier.doi10.1016/j.livsci.2007.12.007
dc.identifier.issn1871-1413
dc.identifier.lattes6064277731903249
dc.identifier.urihttp://hdl.handle.net/11449/1416
dc.identifier.wosWOS:000259133800003
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofLivestock Science
dc.relation.ispartofjcr1.204
dc.relation.ispartofsjr0,730
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectBeef cattleen
dc.subjectGenetic correlationen
dc.subjectreproductive efficiencyen
dc.subjectHeritabilityen
dc.titleGenetic associations between accumulated productivity, and reproductive and growth traits in Nelore cattleen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
unesp.author.lattes6064277731903249
unesp.author.orcid0000-0001-6915-038X[7]
unesp.author.orcid0000-0002-7267-4552[3]
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Ciências Agrárias e Veterinárias, Jaboticabalpt

Arquivos

Licença do Pacote
Agora exibindo 1 - 2 de 2
Nenhuma Miniatura disponível
Nome:
license.txt
Tamanho:
1.71 KB
Formato:
Item-specific license agreed upon to submission
Descrição:
Nenhuma Miniatura disponível
Nome:
license.txt
Tamanho:
1.71 KB
Formato:
Item-specific license agreed upon to submission
Descrição:

Coleções

Artigos - Ciências Exatas - FCAV