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Allele frequencies of TYR and MC1R in Chinese native cattle

文献类型： 外文期刊

作者： Gan, Hai-Yun 1 ; Li, Jian-Bin 2 ; Wang, Hong-Mei 2 ; Gao, Yun-Dong 2 ; Liu, Wen-Hao 2 ; Li, Jing-Peng 2 ; Zhong, Ji-Fe 1 ;

作者机构： 1.Shandong Acad Agr Sci, Dairy Cattle Res Ctr, Jinan 250100, Peoples R China

2.Shandong Acad Agr Sci, Dairy Cattle Res Ctr, Jinan 250100, Peoples R China; NE Agr Univ, Harbin, Peoples R China

关键词： Chinese native cattle;hide color;MC1R;TYR

期刊名称：ANIMAL SCIENCE JOURNAL （ 影响因子：1.749； 五年影响因子：1.909 ）

ISSN： 1344-3941

年卷期： 2007 年 78 卷 5 期

页码：

收录情况： SCI

摘要： In order to estimate the influence of TYR and MC1R on the color of the cattle hide, the MC1R and TYR in Luxi Yellow, Bohai Black, China Holstein black-white and China Holstein red-white cattle (20 animals of each of the four breeds) were sequenced. The comparison of TYR among the four hide color phenotypes revealed no sequence difference. The sequences of the MC1R coding region revealed three alleles (E-D, E+ and e), which were previously reported. Furthermore, we found an important single nucleotide polymorphism at 725 position of the MC1R coding region, which may help in cattle breed identification. A polymerase chain reaction-restriction fragment length polymorphism was performed to investigate the gene frequencies of the four breeds. Most China Holstein black-white cattle had E-D and E+ alleles (E-D = 0.12, E+ = 0.80) and no homozygous e/e and most Bohai Black cattle had E-D and E+ alleles (E-D = 0.52, E+ = 0.47). Therefore it is consistent with the hypothesis that E-D and E+ induce black pigment synthesis. On the other hand, most of the China Holstein red-white cattle and Luxi Yellow cattle had the e allele (e/e = 0.95). Unexpectedly, the E+/e genotype was present in China Holstein red-white cattle and Luxi Yellow cattle.

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