Biotechnology Bulletin ›› 2019, Vol. 35 ›› Issue (10): 152-161.doi: 10.13560/j.cnki.biotech.bull.1985.2019-0167

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Research on SNP Associated with Multiparous Trait in Double-lamb of Tan Sheep by SNaPshot Assay

TIAN De-hong1, 2, LIU Si-jia1, DING Ning1, LI Xue1, ZHAO Kai1   

  1. 1. Northwest Institute of Plateau Biology,Chinese Academy of Sciences,Xining 810008;
    2. University of Chinese Academy of Sciences,Beijing 100049
  • Received:2019-03-02 Online:2019-10-26 Published:2019-09-30

Abstract: The SNPs(Single Nucleotide Polymorphism)detection and correlation study of multiparous traits were carried out on the double-lamb group of Tan sheep,aiming at promoting the application of SNPs in the genetic breeding of double-lamb in China. On the basis of SNPs screening at the previous studies,13 SNPs sites of 3 genes were determined as candidate sites by the flight mass spectrometry of candidate genes. Population differences were analyzed and multiparous candidate genes were screened by detecting polymorphism of the double-lamb group of Tan sheep. The association analyses showed that 5 of 13 loci were associated with multiparous performance,3 genetic models were confirmed,whereas haplotype constructed by BMPR1B gene was not associated with multiparous performance. The study is aimed at providing reference for molecule-assisted breeding techniques,such as molecule-marker species selection and breed selection for double-lamp group of Tan sheep in the protection and also a sustainable utilization of rare germplasm genetic resources of indigenous domestic animal,therefore accelerating the breeding progress of high quality multiparous mutton sheep.

Key words: Tan sheep, double-lamb, SNaPshot, prolificacy