Data/hora: 11/06/2024 09:02:11

Provedor de dados: | 96
País: | Brazil
Título: | Estimation of (co)variance components and genetic parameters for weights of red-winged tinamou using random regression models
Autores: | Tholon,P.; Queiroz,S.A.
Data: | 2011-04-01
Ano: | 2011
Palavras-chave: | Genetic correlation; Heritability; Legendre polynomials; Tinamou; Wild bird.
Resumo: | The objective of this work was to determine genetic parameters for body weight of tinamou in captivity. It was used random regression models in analyses of data by considering the direct additive genetic (DA) and permanent environmental effects of the animal (PE) as random effects. Residual variances were modeled by using a fifth-order variance function. The mean population growth curve was fitted by sixth-order Legendre orthogonal polynomials. Direct additive genetic effects and animal environmental permanent effect were modeled by using Legendre polynomials of order two to nine. The best results were obtained by models with orders of fit of 6 for direct additive genetic effect and of order 3 for permanent effect by Akaike information criterion and of order 3 for both additive genetic effect and permanent effect by Schwarz Bayesian information criterion and likelihood ratio test. Heritability estimates ranged from 0.02 to 0.57. The first eigenvalue explained 94% and 90% of the variation from additive direct and permant environmental effects, respectively. Selection of tinamou for body weight is more effective after 112 days of age.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000400011
Editor: | Sociedade Brasileira de Zootecnia
Relação: | 10.1590/S1516-35982011000400011
Formato: | text/html
Fonte: | Revista Brasileira de Zootecnia  v.40 n.4 2011
Fonte: | info:eu-repo/semantics/openAccess