Combined Selection Index for New Yorkshire Dam Line with High Prolificacy  

大白猪高繁母本新品系选育的综合选择指数制定(英文)

作　　者：孙华[1] 宋忠旭[1] 彭先文[1] 李良华[1] 董斌科[1] 梅书棋[1] 

机构地区：[1]湖北省农业科学院畜牧兽医研究所/动物胚胎工程及分子育种湖北省重点实验室,湖北武汉430064

出　　处：《Agricultural Science & Technology》2013年第10期1443-1445,1461,共4页农业科学与技术（英文版）

基　　金：Supported by National Science and Technology Support Plan during the Eleventh Five-year Plan(2006BAD01A08-02);Hubei Agricultural Innovation Program(2007-620-004-003);Special Fund for Modern Pig Production Technology Construction(NYCYTX-009)~~

摘　　要：The combined selection index used in the breeding of new Yorkshire dam line with high prolificacy according to breeding objects was formulated as /：2.272E- BVNB-0.056EBVDAYS. After 5 generations breeding, the two main selected traits such as total number of born and age at 100 kg weight was 12.17 piglets/litter and 165.18 d, respectively. The genetic improvements per generates was 0.156 and -2.198, respec- tively. The breeding objects of the new Yorkshire dam line with high prolificacy were basically reached. It indicated that the methods and index could be used in pig breeding.根据育种目标制定大白猪高繁母本新品系的综合选择指数为:I=2.272EBV NB-0.056EBVDAYS。经过5个世代的选育,2个主选性状窝产仔数和达100 kg体重日龄分别为12.17头/窝和165.18 d,每代遗传改进量分别为0.156和-2.198,基本达到了育种目标。说明指数的制定是成功的,可以应用于育种实践。

关 键 词：New Yorkshire dam line with high prolificacy Breeding objects Com- bined selection index 

分 类 号：S828[农业科学—畜牧学]