期刊论文

中文

中国农业科学

0578-1752

2009

42

2

742-747

10.3864/j.issn.0578-1752.2009.02.046

湖南省科技厅重点攻关项目

本校为第一机构

[目的]研究猪生长性状相关基因多态性,各多态位点对猪生长及胴体性状的影响,为分子标记辅助选择提供依据.[方法]采用PCR-RFLP方法分析PIT1、HDAC1,IGF2基因在不同品种酶切位点多态性,分析不同基因型对生长与胴体性状的遗传效应.[结果]PIT1基因C等位基因、HDAC1基因G等位基因、IGF2基因A等位基因均有显著提高生长的效应,达100 kg活重所需时间一般可缩短6～9 d.PIT1基因C等位基因、HDAC1基因G等位基因、IGF2基因A等位基因提高瘦肉率3～5个百分点、背膘厚降低2～3 mm,生长性能指数得到相应提高.[结论]上述基因的有利等位基因有可能在选种中作为分子标记.

[Objective] The objective of this study was to study the polymorphism of porcine three loci of PIT1, HDAC1 and IGF2 and its relationship with the growth and carcass traits in swine. [ Method ] The polymorphism of three genes was analyzed by PCR-RFLP method. The genotypic effects of such genes on growth and carcass traits were analyzed. [Result] CC genotype of PIT1, GG of HDAC1 and AA of IGF2 had favorable effect on growth and the age at 100 kg liveweight is 6-9days less than the contrary genotypes. The effects of CC genotype of PIT1, the GG genotype of HDAC1 and the BB genotype of IGF2 on lean...