Polymorphism of insulin-like growth factor I gene in six chicken breeds and its relationship with growth traits
Polymorphism of insulin-like growth factor I gene in six chicken breeds and its relationship with growth traits
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DOI：
10.5713/ajas.2004.301
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发表时间：
2004-03-01
期刊：
影响因子：
--
通讯作者：
Sun, H
中科院分区：
文献类型：
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作者：
Wang, WJ;Ouyang, K;Sun, H
采用PCR-Pst I-RFLP方法对6个鸡品种（n=515）的IGF I基因进行了多态性分析，发现等位基因A（621 bp）和等位基因B（364和257 bp）。在这些鸡种中，外来鸡种携带高频率的等位基因B，而中国地方鸡种携带高频率的等位基因A。同时对133只宁都黄鸡和162只万寨黄鸡的IGF-Ⅰ的作用进行了研究。通过对5个生长性状的测定，分析IGFI基因多态性与生产性能的关系。宁都黄鸡和万寨黄鸡BB基因型4月龄体重显著高于AA基因型（p
The polymorphism of insulin-like growth factor I (IGF I) in 6 chicken breeds (total n=515) was detected by PCR-Pst I-RFLP, and allele A (621 bp) or allele B (364 and 257 bp) were observed. In these chicken breeds, it was found that exotic chicken carried high frequencies of allele B, while Chinese native chicken breeds carried high frequencies of allele A. Meanwhile the role of IGF I was investigated in 133 Ningdu Yellow chicken and 162 Wanzhai Yellow chicken. Five growth traits were recorded for analyzing the association between IGFI gene polymorphism and performance. In both the Ningdu and Wanzhai Yellow breeds, body weight at 4 months was significantly higher with BB genotype than with AA genotype (p