Genome wide assessment of genetic variation and population distinctiveness of the pig family in South Africa

Genetic diversity is of great importance and a prerequisite for genetic improvement and conservation programs in pigs and other livestock populations. The present study provides a genome wide analysis of the genetic variability and population structure of pig populations from different production systems in South Africa relative to global populations. A total of 234 pigs sampled in South Africa and consisting of village (n = 91), commercial (n = 60), indigenous (n = 40), Asian (n = 5) and wild (n = 38) populations were genotyped using Porcine SNP60K BeadChip. In addition, 389 genotypes representing village and commercial pigs from America, Europe and Asia were accessed from a previous study and used to compare population clustering and relationships of South African pigs with global populations. Moderate heterozygosity levels, ranging from 0.204 for Warthogs to 0.371 for village pigs sampled from Capricorn municipality in Eastern Cape province of South Africa were observed. Principal Co...

遗传多样性（Genetic diversity）在猪及其他家畜种群的遗传改良与保护项目中具有重要意义，是其先决条件。本研究针对南非不同生产体系猪群的遗传变异（genetic variability）与种群结构，开展了全基因组（genome wide）分析，并将其与全球种群进行了比较。本研究共对南非采样的234头猪进行基因分型（genotyped），涵盖乡村猪（n=91）、商业猪（n=60）、地方猪（n=40）、亚洲猪（n=5）及野猪（n=38）种群，采用的技术为Porcine SNP60K BeadChip芯片。此外，本研究从先前的研究中获取了389份基因型（genotypes）数据，这些数据代表美洲、欧洲及亚洲的乡村猪与商业猪，用于比较南非猪群与全球种群的聚类（clustering）模式及亲缘关系。研究观察到中等水平的杂合度（heterozygosity），范围从疣猪（Warthogs）的0.204至南非东开普省Capricorn市采样的乡村猪的0.371。主成分（Principal Co...）