›› 2014, Vol. 41 ›› Issue (11): 227-231.

• 遗传繁育 • 上一篇    下一篇

草原红牛胰岛素样生长因子结合蛋白6基因外显子2的遗传多态性及遗传效应分析

杨春, 刘振, 李春义   

  1. 中国农业科学院特产研究所, 吉林省特种动物分子生物学重点实验室, 吉林长春 130112
  • 收稿日期:2014-02-25 出版日期:2014-11-20 发布日期:2014-12-06
  • 通讯作者: 李春义 E-mail:lichunyi1959@163.com
  • 作者简介:杨春(1983-),男,吉林人,博士,助理研究员,研究方向:特种动物分子生物学。
  • 基金资助:
    国家自然科学基金(31070878);973前期研究专项(2011CB111515)。

Genetic Polymorphisms of Exon 2 of IGFBP6 Gene and its Genetic Effects in Red Cattle

YANG Chun, LIU Zhen, LI Chun-yi   

  1. State Key Laboratory for Molecular Biology of Special Economic Animals, Institute of Special Animal and Sciences, Chinese Academy of Agricultural Sciences, Changchun 130112, China
  • Received:2014-02-25 Online:2014-11-20 Published:2014-12-06

摘要: 本试验旨在研究草原红牛不同基因型与屠宰肉用性状的关联性。选用草原红牛作为试验群体,采用PCR-SSCP方法检测胰岛素样生长因子结合蛋白6(insulin-like growth factors binding proteins 6,IGFBP6)基因外显子2的多态性,采用最小二乘法拟合线性模型将突变位点的不同基因型与牛屠宰肉用性状进行关联分析。结果表明,在IGFBP6基因外显子2上发现1个多态性位点A180G,具有3种基因型:AA、AB和BB。SPSS 13.0统计分析结果表明,IGFBP6基因外显子2 AB和BB基因型净肉重极显著高于AA基因型(P<0.01);眼肌面积和骨重显著高于AA基因型(P<0.05),而在宰前活重、胴体重、肾脂重和肋脂重方面3种基因型个体之间差异不显著(P>0.05)。结果显示,IGFBP6基因的多态性与屠宰肉用性状具有一定的关联性,可为今后草原红牛的育种保种工作提供理论依据,并对草原红牛肉用性状的改善提供参考。

关键词: 草原红牛; 胰岛素样生长因子结合蛋白6基因; 遗传多态性; 遗传效应

Abstract: This experiment was conducted to study the slaughter of the relationship between meat traits and genotypes. This study selected Red cattles as the experimental group, using PCR-SSCP method of detection of bovine IGFBP6 gene exon 2 polymorphism analysis with the slaughter of the relationship between meat traits by the GLM model of the SPSS 13.0 statistical software to analysis. The results showed that IGFBP6 gene had a polymorphic site A180G in exon 2, at the same time had three genotypes of AA, AB and BB. Between the three genetypes,AB and BB genetypes were very significant higher than AA genetype in net meat weight (P<0.01),and were significant higher than AA genetype in eye muscle area and bone weigh (P<0.05), while in the ante-mortem live weight, carcass weight, kidney fat weight and rib fat weight in the three genotypes were no significant differences (P>0.05). These results indicated that the slaughter of meat was associated with certain traits, accessibility for the future protection of breeding species of Red cattle to provide a theoretical basis, and Red cattle of beef with traits improve the delivery methods and theoretical on the guidance.

Key words: Red cattle; IGFBP6 gene; genetic polymorpism; genetic effects

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