Título:	Estimation of (co)variance components and genetic parameters for weights of red-winged tinamou using random regression models.
Autoria:	THOLON, P. QUEIROZ, S. A.
Afiliação:	PATRICIA THOLON, CPPSE; SANDRA AIDAR QUEIROZ, UNESP/JABOTICABAL.
Ano de publicação:	2011
Referência:	Revista Brasileira de Zootecnia, v. 40, n. 4, p. 781-787, apr. 2011.
Conteúdo:	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.
NAL Thesaurus:	genetic correlation heritability
Palavras-chave:	Legendre polynomials Tinamou Wild bird
Digital Object Identifier:	https://doi.org/10.1590/S1516-35982011000400011
Tipo do material:	Artigo de periódico
Acesso:	openAccess
Aparece nas coleções:	Artigo em periódico indexado (CPPSE)