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Association of VIPR-1 gene polymorphisms and haplotypes with egg production in laying quails

文献类型： 外文期刊

作者： Pu, Yue-jin 1 ; Wu, Yan 2 ; Xu, Xiao-juan 2 ; Du, Jin-ping 2 ; Gong, Yan-zhang 1 ;

作者机构： 1.Huazhong Agr Univ, Minist Educ, Key Lab Agr Anim Genet Breeding & Reprod, Wuhan 430070, Peoples R China

2.Hubei Acad Agr Sci, Hubei Key Lab Anim Embryo Engn & Mol Breeding, Wuhan 430064, Peoples R China

关键词： Laying quail;Haplotypes;VIPR-1 gene;Egg production traits

期刊名称：JOURNAL OF ZHEJIANG UNIVERSITY-SCIENCE B （ 影响因子：3.066； 五年影响因子：3.057 ）

ISSN： 1673-1581

年卷期： 2016 年 17 卷 8 期

页码：

收录情况： SCI

摘要： The laying quail is a worldwide breed which exhibits high economic value. In our current study, the vasoactive intestinal peptide receptor-1 (VIPR-1) was selected as the candidate gene for identifying traits of egg production. A single nucleotide polymorphism (SNP) detection was performed in 443 individual quails, including 196 quails from the H line, 202 quails from the L line, and 45 wild quails. The SNPs were genotyped using a polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP). Two mutations (G373T, A313G) were detected in all the tested quail populations. The associated analysis showed that the SNP genotypes of the VIPR-1 gene were significantly linked with the egg weight of G373T and A313G in 398 quails. The quails with the genotype GG always exhibited the largest egg weight for the two mutations in the H and L lines. Linkage disequilibrium (LD) analysis indicated that G373T and A313G loci showed the weakest LD. Seven main diplotypes from the four main reconstructed haplotypes were observed, indicating a significant association of diplotypes with egg weight. Quails with the h1h2 (GGGT) diplotype always exhibited the smallest egg weight and largest egg number at 20 weeks of age. The overall results suggest that the alterations in quails may be linked with potential major loci or genes affecting reproductive traits.

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