Scientia Agricultura Sinica ›› 2005, Vol. 38 ›› Issue (12): 2520-2525 .

• ANIMAL SCIENCE·VETERINARY SCIENCERE·SOURCE INSECT • Previous Articles     Next Articles

Correlation of Polymorphisms of POU1F1 Gene and Growth Traits in Qinchuan Cattle and Its Hybrid Cattle

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  1. 中国农业大学
  • Received:2005-06-20 Revised:1900-01-01 Online:2005-12-10 Published:2005-12-10

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Abstract: PCR-RFLP was firstly applied to analyze the correlation of polymorphisms of POU1F1 gene and growth traits in 164 beef cattle, at the age of 4 months (±10 d), including Qinchuan cattle, Qinchuan×Limousin cattle, Qinchuan×Red Angus and Qinchuan×German Yellow cattle. The results showed that 451 bp PCR products digested with HinfI demonstrated polymorphisms in four populations which were at Hardy-Weinberg equilibrium (P>0.05). Moreover, the frequencies of allele A/B of QQ, AQ, DQ and LQ populations were 0.232/0.768, 0.333/0.667, 0.178/0.822 and 0.181/0.819, respectively. The correlation of polymorphisms of POU1F1 gene and growth traits among the 4 populations was analyzed. In heart girth, height at hip cross, individuals with genotype AB and BB in population were higher than that of genotype AA, that is, BB and AB＞AA (P＜0.05). So POU1F1 gene can be one of a candidate genes for growth traits with heart girth, height at hip cross, but not for body length trait. The conclusion is that genotype BB is a predominant genotype and B is a predominant allele.

Key words: Qinchuan cattle, PCR-RFLP, POU1F1 gene, Polymorphism, Growth traits

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