中国畜牧兽医2012，Vol.39Issue(3)：140-144,5.
胰岛素样生长因子Ⅰ基因第1内含子微卫星多态性对山西白猪体重和体尺性状的影响
Association of CA Repeat Polymorphism at Intron 1 of Insulin-like Growth Factor Ⅰ Gene with Body Weight and Body Size in Shanxi White Pig
摘要
Abstract
A total of 174 pigs from Shanxi White pig were used to investigate associations between the polymorphic (CA)n sequence repeat located at the first intron of the insulin-like growth factor (IGF- I ) gene and the traits of body weights at different growth stages and body sizes at six-month age by unvariate animal model. There were six alieles, which were 198,202, 204,206,208 and 210 bp,were detected in Shanxi White population. The frequencies of alleles of 198 and 202 bp,with less CA repeat number, were 0. 2759 and 0. 2385, respectively, which were greater than those of alleles with more CA repeat number, such as the allele of 208 bp, whose frequency was 0. 0747. Twelve genotypes were found in Shanxi White population, the frequencies of homozygotes were greater than 0. 010 apart from 208/208 bp,and the frequencies of heterozygotes were 0. 017. The associations of IGF- I genotype with the traits of birth weight, weaning weight, body weight, body height, body length, chest girth,back fat thickness alive at six-month age were significant (P<0. 05). Individuals with genotype of 204/204 bp has greater body weight and thinner back fat thickness than those of others, which was in accordance with the pig breeding direction in China,should be selected as boars or sows in the selection and breeding programme.关键词
山西白猪/IGF-Ⅰ基因/微卫星/体重/体尺Key words
Shanxi White pig/ IGF- I gene/ microsatellite/body weight/ body size分类
农业科技引用本文复制引用
王效京,王松柏,石建中,杨晓奋,贾静敏,高鹏飞,郭晓红,李步高,曹果清..胰岛素样生长因子Ⅰ基因第1内含子微卫星多态性对山西白猪体重和体尺性状的影响[J].中国畜牧兽医,2012,39(3):140-144,5.基金项目
山西省攻关项目(991016和20080311031) （991016和20080311031）
科技部农业科技成果转化资金项目(2008GB2A300032). （2008GB2A300032）
