中国农业大学学报2018，Vol.23Issue(4)：53-59,7.DOI:10.11841/j.issn.1007-4333.2018.04.07
内蒙古绒山羊不同毛被类型遗传参数估计及遗传进展研究
Estimation of genetic parameters and research on the genetic progress of different staple length Inner Mongolian Cashmere goats
摘要
Abstract
The repetitive data of staple length (natural length) of 54 044 Inner Mongolia White Cashmere goats from 1990 to 2014were collected in a breeding farm.The staple length of Inner Mongolian Cashmere goats were divided into three types:Short-staple length (≤13 cm,SSL),intermediate-staple length (＞ 13 cm and ≤22 cm,ISL) and longstaple length (＞22 cm,LSL).After the basic statistical analysis of different hair length,it was found that there were significant differences in staple length among Inner Mongolia Cashmere goats.The staple length was ranged from 5 to 34 cm,and the distribution of staple length was consistent with the normal distribution.The average information restricted maximum likelihood (AIREML) method in a multivariate animal model on wombat software was used to analyze variance components and estimate the genetic parameters to reveal the staple length genetic regularity.The result showed that:the heritability of SSL,ISL and LSL were 0.11,0.16 and 0.22,respectively.The heritability of LSL was highest in three types.And the heritability of SSL and ISL belong to the low heritability,while the heritability of LSL was the moderate heritability.The genetic trends of all three types' staple length were consistent in both genetic progress and genetic progress.The result showed that LSL was most stable in the genetic progress.Genetic trends tor SSL (0.005 9 cm/year),ISL (0.011 3 cm/year) and LSL(0.014 1 cm/year) was positive during the period of breeding.The genetic progress of the LSL3 was the fastest among three types.So,selecting of LSL3 could accelerate genetic progress.And this study lay the theoretical foundation for the indirect selection in other important economic traits.关键词
绒山羊/毛长/遗传参数/遗传进展Key words
Cashmere goats/staple length/genetic parameters/genetic change分类
农业科技引用本文复制引用
李学武,王瑞军,王志英,李宏伟,王振宇,苏蕊,张燕军,刘志红,李金泉..内蒙古绒山羊不同毛被类型遗传参数估计及遗传进展研究[J].中国农业大学学报,2018,23(4):53-59,7.基金项目
国家绒毛用羊现代农业产业技术体系(CARS-40-05) （CARS-40-05）
国家公益性行业(农业)科研专项(201303059) （农业）
内蒙古自治区计划项目 （）
