Application of the Bayesian method to estimate genetic and phenotypic parameters of growth traits of meat quails

Revista Brasileira de Zootecnia

Winter, Eliane Maria Wilbert²  Martins, Elias Nunes¹  Surek, Diego²  Oliveira, Edson Gonçalves de²  Almeida, Marina Isabel Mateus de²  Natel, Andressa Santanna² 

[1] Universidade Estadual de Maringá;Universidade Federal do Paraná

关键词: genetic correlations;    Gibbs sampling;    meat quails;    weight    IntroduçãoO constante crescimento populacional vem estimulando a exploração de outras aves como novas opções de fontes protéicas;   

DOI  :  10.1590/S1516-35982006000600015

学科分类：兽医学

来源: Universidade Federal de Vicosa

【 摘 要 】

The objectives of this study were to estimate phenotypic and genetic parameters for growth traits of meat quails. A total of 1022 birds were housed, identified and individually weighted at 7 days (PES7); 14 days (PES14); 28 days (PES28) and at 42 days (PES42). Covariance components and genetic parameters were estimated by Bayesian procedures using Gibbs sampling with MTGSAM software. Genetic correlations between PES7 and PES14, PES28, and PES42 were respectively 0.73, 0.52 and 0.55 and between PES14 and PES28 and PES42 were respectively 0.73 and 0.56. Genetic correlation of 0.81 between PES28 and PES42 days indicates the possibility to increase weight at 42 days by selecting for weight at 28 days of age. Estimates of phenotypic correlations ranged from 0.57 to 0.85 and were larger than the genetic ones suggesting small magnitude of positive environmental correlation estimates. The smallest credibility intervals were observed for genetic correlations between PES28 and PES42 and between PES14 and PES28.

【 授权许可】

CC BY-NC