Note on the optimum number of daughters per sire to maximize the genetic progress for litter size in Segurena sheep

被引：1

作者：

Analla, M

Munoz-Serrano, A

Serradilla, JM

机构：

[1] Univ Cordoba, Fisiogenet Anim ETSIAM, Lab Fisiogenet Anim, E-14080 Cordoba, Spain

[2] Fac Sci, Dept Biol, Tetouan 93002, Morocco

来源：

LIVESTOCK PRODUCTION SCIENCE | 1997年 / 52卷 / 03期

关键词：

litter size; daughters' number; genetic progress; meat sheep;

D O I：

10.1016/S0301-6226(97)00118-8

中图分类号：

S8 [畜牧、动物医学、狩猎、蚕、蜂];

学科分类号：

0905 ;

摘要：

Litter size performances of more than 6000 ewes, distributed in 20 herds connected through artificial insemination, were simulated during 21 consecutive lambings. Three different structures of progeny-tests were considered. The objective was to assess for the adequate number of daughters per tested sire, for a correct prediction of its litter size breeding value in order to maximize the genetic progress for this trait in the Segurena selection scheme. Results showed that when testing sires with about 30 daughters each one and according to the given parameters considered, the maximum genetic progress is obtained.

引用

页码：229 / 232

页数：4