Bayesian estimates of genetic variance of fertility and hatchability under a threshold animal model

被引：0

作者：

Dobek, A

Szydlowski, M

Szwaczkowski, T

Skotarczak, E

Molinski, K

机构：

[1] August Cieszkowski Agr Univ Poznan, Dept Math & Stat Methods, PL-60637 Poznan, Poland

[2] Dept Anim Breeding & Genet, PL-60637 Poznan, Poland

来源：

JOURNAL OF ANIMAL AND FEED SCIENCES | 2003年 / 12卷 / 02期

关键词：

genetic trend; genetic variance; Gibbs sampling; laying hens; threshold model; heritability;

D O I：

暂无

中图分类号：

S8 [畜牧、动物医学、狩猎、蚕、蜂];

学科分类号：

0905 ;

摘要：

The genetic variability of fertility and hatchability of laying hens were studied in four strains under long-term selection for productive traits. Data were collected over nine generations. The total number of individuals recorded per strain ranged from 2015 to 5386. The traits were analysed as binary characters under the threshold animal model using Gibbs sampling. The point estimates of heritability of fertility were relatively high and ranged from 0.38 to 0.46. The estimates for hatchability were lower and ranged from 0.22 to 0.24. All the strains showed positive genetic trends.

引用

页码：307 / 314

页数：8

共 23 条

[1] Genetic parameters of survival to the different stages of embryonic death in laying hens [J].