Data/hora: 09/06/2024 19:46:45

Biblioteca(s): | Embrapa Gado de Corte.
Data corrente: | 27/10/2023
Data da última atualização: | 31/10/2023
Autoria: | MORALES, D. DA S.; SILVA, D. O.; AYRES, D. R.; SANTANA JÚNIOR, M. L.; BIGNARDI, A. B.; VENTURA, R. V.; MENEZES, G. R. de O.; CARVALHEIRO, R.; PICCOLI, M. L.; ROSO, V. M.; PEREIRA, R. J.
Afiliação: | DÉBORA DA SILVA MORALES, UNIVERSIDADE FEDERAL DE RONDONÓPOLIS; DIOGO OSMAR SILVA, UNIVERSIDADE FEDERAL DE RONDONÓPOLIS; DENISE ROCHA AYRES, UNIVERSIDADE FEDERAL DE RONDONÓPOLIS; MÁRIO LUIZ SANTANA JUNIOR, INIVERSIDADE FEDERAL DE RONDONÓPOLIS; ANNAIZA BRAGA BIGNARDI, UNIVERSIDADE FEDERAL DE RONDONÓPOLIS; RICARDO VIEIRA VENTURA, UNIVERSIDADE DE SÃO PAULO; GILBERTO ROMEIRO DE OLIVEIRA MENEZE, CNPGC; ROBERTO CARVALHEIRO, UNIVERSIDADE ESTADUAL PAULISTA; MÁRIO LUIZ PICCOLI, GenSys Consultores Associados S/S; VANERLEI MOZAQUATRO ROSO, GenSys Consultores Associados S/S; RODRIGO JUNQUEIRA PEREIRA, UNIVERSIDADE FEDERAL DE RONDONÓPOLIS.
Título: | Genetic associations between stayability to consecutive calvings and traits of economic interest in taurine and zebu breeds.
Ano de publicação: | 2023
Fonte/Imprenta: | Journal of Animal Breeding and Genetics, v. 140, 2023.
Páginas: | 13 p.
ISSN: | 1439--0388
DOI: | 10.1111/jbg.12827
Idioma: | Inglês
Conteúdo: | Stayability (STAY) is a way to evaluate the productive longevity of females. Measuring the STAY at each cow calving allows earlier indicators of longevity to be obtained. Our objective with this study was to verify the association between STAY and consecutive calvings and traits potentially used as selection criteria in beef cattle, such as age at first calving (AFC), days to calving (DC), weaning weight (WW), and yearling weight (YW). Data from the Nelore, Angus/Brangus, and Hereford/Braford breeds were used. The estimation of variance components and subsequent prediction of breeding values were performed for all traits. The estimated breeding values (EBV) were used to analyse the association between STAY and the other traits. The Pearson's correlation estimated between the EBV for the intercept coefficient for STAY to consecutive calvings and those of AFC, DC, WW (direct and maternal effects), and YW was favourable and of low magnitude (<0.25) depending on the breed studied. The influence of the genetic merit of AFC on the chance of selection for STAY was favourable and relevant regardless of the intensity of selection and breed. DC and WW (maternal effect) traits were favourably influenced by the chance of selection for STAY, irrespective of breed. The WW (direct effect) did not affect the chance of selection for STAY for the Nelore and Hereford/Braford breeds and negatively influenced, but to a small extent, the Angus/Brangus breed. For YW, an increase in genetic merit affected the chances of selection for STAY, depending on the breed and selection intensity evaluated. The influence of the genetic merit for AFC, DC, and WW (maternal effect) on the chance of selection for STAY to consecutive calvings was favourable and relevant regardless of the selection intensity scenario evaluated. The WW (direct effect) did not influence the chance of selection for STAY. For the scenario with high selection intensity, the selection for YW favourably influenced the chance of selection for STAY in Angus/Brangus and Hereford/Braford breeds but not in Nelore.
Thesagro: | Gado de Corte; Gado Hereford; Gado Nelore; Gado Zebu; Parto; Reprodução Animal; Touro.
Thesaurus Nal: | Animal breeding; Animal reproduction; Beef cattle; Calving; Genetic correlation; Quantitative genetics; Selection index; Taurine.
Categoria do assunto: | --
Registro original: | Embrapa Gado de Corte (CNPGC)
Exemplares: | CNPGC - (17920-1) - UPC - AP - DD -  -  -  - DIS