Data/hora: 11/06/2024 04:37:36

Biblioteca(s): | Embrapa Gado de Leite.
Data corrente: | 13/08/2021
Data da última atualização: | 13/08/2021
Autoria: | BRITO, L. C.; PEIXOTO, M. G. C. D.; CARRARA, E. R.; SILVA, F. F. e; VENTURA, H. T.; BRUNELI, F. A. T.; LOPES, P. S.
Afiliação: | LAÍS COSTA BRITO, Universidade Federal de Viçosa; MARIA GABRIELA CAMPOLINA D PEIXOTO, CNPGL; EULA REGINA CARRARA, Universidade Federal de Viçosa; FABYANO FONSECA E SILVA, Universidade Federal de Viçosa; HENRIQUE TORRES VENTURA, Associação Brasileira de Criadores de Zebu; FRANK ANGELO TOMITA BRUNELI, CNPGL; PAULO SÁVIO LOPES, Universidade Federal de Viçosa.
Título: | Genetic parameters for milk, growth, and reproductive traits in Guzerá cattle under tropical conditions.
Ano de publicação: | 2020
Fonte/Imprenta: | Tropical Animal Health and Production, v. 52, p. 2251-2257, 2020.
DOI: | https://doi.org/10.1007/s11250-020-02255-0
Idioma: | Inglês
Conteúdo: | This study aimed to estimate the genetic parameters of milk (305-day milk yield (MY305)), growth (weaning weight (WW), yearling weight (YW), and weight at 550 days (W550)), and reproductive (age at first calving (AFC)) traits in Guzerá cattle by using Bayesian multiple-trait models. Systematic effects included sex and age at calving for the growth and milk traits, respectively. The additive genetic and contemporary groups (herd and year and season of birth) were included as random effects. Additionally, maternal genetic and permanent effects were also included as random effects for theWW. The heritability estimates were 0.29 (MY305), 0.42 (WW), 0.49 (YW), 0.56 (W550), and 0.25 (AFC). The genetic correlations among the growth traits were higher than 0.83; between the MY305 and WW, MY305 and YW, and MY305 and W550, the genetic correlations were 0.25, 0.32, and 0.36, respectively. The AFC was negatively correlated with the milk and growth traits. These results suggest the viability and potential of the joint selection for milk, beef, and reproductive traits in Guzerá cattle.
Palavras-Chave: | Bayesian inference; Correlação genética; Inferência bayesiana; Zebu cattle.
Thesagro: | Bovino; Crescimento; Gado Guzerá; Gado Zebu; Produção Leiteira; Reprodução Animal.
Thesaurus Nal: | Genetic correlation; Milk yield.
Categoria do assunto: | L Ciência Animal e Produtos de Origem Animal
Registro original: | Embrapa Gado de Leite (CNPGL)
Exemplares: | CNPGL - (25198-1) - UPC - AP - DD -  -  -  - DIS