畜牧兽医学报 ›› 2016, Vol. 47 ›› Issue (9): 1817-1823.doi: 10.11843/j.issn.0366-6964.2016.09.009

• 遗传繁育 • 上一篇    下一篇

中国西门塔尔牛肉用群体重要经济性状遗传参数估计

牛红1,宝金山2,吴洋1,朱波1,张文刚1,夏江威1,宋禹昕1,郭鹏1,徐凌洋1,陈燕1,高雪1,张路培1,高会江1,李俊雅1*   

  1. (1.中国农业科学院北京畜牧兽医研究所,北京 100193; 2.锡林郭勒盟乌拉盖管理区兽医局,乌拉盖 026321)
  • 收稿日期:2016-01-22 出版日期:2016-09-23 发布日期:2016-09-23
  • 通讯作者: 李俊雅,研究员,E-mail: JL1@iascaas.net.cn
  • 作者简介:牛红(1990-),女,吉林公主岭人,硕士生,主要从事分子数量遗传学研究,Tel: 010-62818176,E-mail: nhnh0304@126.com
  • 基金资助:

    “十二五”国家科技支撑计划(2011BAD28B04);国家自然科学基金(31372294);国家高技术研究发展计划(2013AA102505-4)

Estimation of Genetic Parameters for Economic Important Traits in Chinese Simmental Beef Cattle

NIU Hong 1,BAO Jin-shan 2,WU Yang 1,ZHU Bo 1,ZHANG Wen-gang 1,XIA Jiang-wei 1,SONG Yu-xin 1,GUO Peng 1,XU Ling-yang 1,CHEN Yan 1,GAO Xue1,ZHANG Lu-pei 1,GAO Hui-jiang 1,LI Jun-ya 1*   

  1. (1.Institute of Animal Science,Chinese Academy of Agricultural Sciences,Beijing 100193,China;2.Veterinary Bureau of Ulgai Precinct in Xilin Gol League,Ulgai 026321,China)
  • Received:2016-01-22 Online:2016-09-23 Published:2016-09-23

摘要:

本研究旨在对出生于2008-2013年的中国西门塔尔牛肉用群体的重要经济性状进行遗传参数和方差组分估计,该群体大小为2 939头。采用非求导约束最大似然法估计遗传力、遗传相关和方差组分。结果显示,初生重、断奶重、出栏重、胴体重、屠宰率和净肉率的遗传力估计值分别为0.48、0.44、0.43、0.38、0.31、0.39。其中,初生重和断奶重的遗传相关估计结果为0.57,出栏重和胴体重的遗传相关为0.94,屠宰率和净肉率的遗传相关为0.89。该群体的生长和屠宰相关性状均属于中高遗传力性状,且性状之间具有较高的遗传相关。本研究对中国西门塔尔牛肉用群体重要经济性状的遗传参数做了系统评估分析,为将来制定育种方案和遗传评估奠定基础。

Abstract:

This experiment was conducted to estimate the variance component and genetic parameters including heritability and genetic correlation for economic important traits of 2 939 Simmental beef cattle that were born between 2008 and 2013.These parameters were estimated using derivative-free restricted maximum likelihood method.We found that the estimation of heritability for birth weight,weaning weight,marketing weight,carcass weight,dressing percentage and meat percentage were 0.48,0.44,0.43,0.38,0.31 and 0.39,respectively.Furthermore,the genetic correlation between birth weight and weaning weight,marketing weight and carcass weight,dressing percentage and meat percentage were 0.57,0.94 and 0.89,respectively.The heritabilities of these development traits and carcass traits in Chinese Simmental beef cattle population belong to medium and high heritability,and these traits had high genetic correlation values.Our study conducted the system analysis on genetic parameters of important economic traits in Chinese Simmental beef cattle.And the results lay the foundation for further breeding scheme and genetic evaluation.

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