浦东白猪遗传多样性及繁殖性能的变化分析

doi:10.16431/j.cnki.1671-7236.2017.04.022

Abstract

Abstract:

This study was aimed to investigate the genetic diversity and the reason for the degradation of the reproductive performance of Pudong White pig. The genetic diversity of Pudong White pig, six Taihu pig breeds and three Western pig breeds were analyzed based on the genome-wide SNPs.The genetic diversity and population structure of these pig breeds were also explored based on the SNPs related to reproductive traits. The results showed that Pudong White pig displayed a lower level of the genetic diversity than the Taihu area pig breeds. For the reproductive-related loci, except for Fengjing pig, Pudong White pig displayed the lowest propotion of polymorphic markers, expected heterozygosities and allelic richness (excluded Duroc pig). The result of PCA showed that Pudong White pig displayed its uniqueness in the reproductive-related SNPs. With the comparsion of Taihu pigs and Western populations, Pudong White pig displayed a lower level of the genetic diversity and more homozygous reproductive-related loci. Nevertheless, a certain number of favorable alleles were still harbored in Pudong White pig, which might result high heterosis in the offsprings. In conclusion, the results of this study might provide some valuable information for the breeding, conservation and utilization of this breed.

Key words: Pudong White pig; genetic diversity; reproductive performance

CLC Number:

S813.3

XIAO Qian, ZHANG Zhe, SUN Hao, ZHANG Xiang-zhe, SHEN Da-de, CHU Ye-gen, WANG Qi-shan, PAN Yu-chun. Genetic Diversity and Degradation Analysis of Reproductive Performance of Pudong White Pig[J]. , 2017, 44(4): 1095-1101.

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Genetic Diversity and Degradation Analysis of Reproductive Performance of Pudong White Pig

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