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中国农学通报

中国农学通报 ›› 2015, Vol. 31 ›› Issue (2): 8-12.doi: 10.11924/j.issn.1000-6850.2014-1530

所属专题： 畜牧兽医

• 畜牧 动物医学 蚕 蜂 • 上一篇    下一篇

新疆褐牛主要经济性状的遗传参数估计

周振勇,李红波,闫向民,张金山,杜 玮,张 杨   

  1. (新疆畜牧科学院畜牧研究所,乌鲁木齐 830000）
  • 收稿日期:2014-05-28 修回日期:2015-01-23 接受日期:2014-09-29 出版日期:2015-03-19 发布日期:2015-03-19
  • 通讯作者: 周振勇
  • 基金资助:
    现代农业产业技术体系建设专项资金资助(nycytx-38)；自治区科技重大专项课题“新疆肉牛新品种（系）培育与杂交改良技术研究示范”(201230116-10)。

Genetic Parameter Estimation of Xinjiang Brown Cattle’s Main Economic Characters

Zhou Zhenyong, Li Hongbo, Yan Xiangmin, Zhang Jinshan, Du Wei, Zhang Yang   

  1. (Institute of Raise Livestock, Xinjiang Academy of Animal Science,Urumqi 830000)
  • Received:2014-05-28 Revised:2015-01-23 Accepted:2014-09-29 Online:2015-03-19 Published:2015-03-19

摘要： 评估新疆褐牛主要生长发育与经济性状的遗传参数，研究采用动物模型和非求导约束最大似然法（MTDFREML）。结果表明：新疆褐牛生长性状初生重、6月龄体重、周岁体重、2岁体重的遗传力分别为0.45、0.37、0.38、0.34，属中等水平，各阶段龄体尺指标的遗传力不同，周岁体重、2岁体重、体斜长、体高等指标存在较强的表型相关和遗传相关；建议加强开展以体高、体斜长为重要育种目标的新疆褐牛早期选种、选育工作。

关键词: 转基因方法, 转基因方法

Abstract: The study aims to determine the Xinjiang brown cattle’s genetic parameters of main growth and economic characters by using animal models and the derivation constraint maximum likelihood method (MTDFREML). Results show that: heritability of Xinjiang brown cattle’s growth characters, including birth weight, 6 months weight, one full year weight, 2 years old weight, which are 0.45, 0.37, 0.38 0.34, respectively, belong to medium level. The heritability of body measurements indexes of different age are different, indexes such as one full year weight, 2 years old weight, body slanting length and body height have comparatively strong phenotypic and genetic correlation. We suggest that the breeding work of Xinjiang brown cattle should focus on selecting major breeding objectives like body height and body slanting length.