Abstract
Objective: The study aims to uncover the genetic diversity and unique genetic structure of the Min pig conserved population, divide the nucleus conservation population, and construct the molecular pedigree.Methods: We used KPS Porcine Breeding Chip v1 50K for SNP detection of 94 samples (31♂, 63♀) in the Min pig conserved population from Lanxi breeding Farm.Results: The polymorphic marker ratio (PN), the observed heterozygosity (Ho), and the expected heterozygosity (He) were 0.663, 0.335, and 0.330, respectively. The pedigree-based inbreeding coefficients (F<sub>PED</sub>) was significantly different from those estimated from runs of homozygosity (F<sub>ROH</sub>) and single nucleotide polymorphism (FSNP) based on genome. The Pearson correlation coefficient between F<sub>ROH</sub> and F<sub>SNP</sub> was significant (p<0.05). The effective population content (Ne) showed a continuously decreasing trend. The rate of decline was the slowest from 200 to 50 generations ago (r = 0.95), then accelerated slightly from 50 to 5 generations ago (1.40<r<1.50) and increased significantly in the last 5 generations (r = 2.6). According to the composition of Chinese lineage, we separated the nucleus conservation population (81 individuals) and the candidate conservation population (13 individuals) of Min pig, then the nucleus conservation population of Min pig was divided into 9 families by genomic information matrix.Conclusion: Our study indicated that the genetic diversity of the Min pig conserved population was inadequate. Due to the introgression of European commercial pig breeds and the unscientific breeding process, it is necessary to construct the molecular pedigree of the nucleus conservation population for the Min pig.
Funder
Natural Science Foundation of Heilongjiang Province
Publisher
Asian Australasian Association of Animal Production Societies
Subject
General Veterinary,Genetics,Animal Science and Zoology,Physiology,Food Science
Cited by
3 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献