Genetic diversity, population structure, and correlations between locally adapted zebu and taurine breeds in Brazil using SNP markers

摘要: Genetic diversity is one of the most important issues in studies on conservation cattle breeds and endangered species. The objective this study was to estimate levels genetic differentiation between locally adapted taurine (Bos taurus taurus) zebu indicus) Brazil, which were genotyped for more than 777,000 SNPs. fixation index (F ST), principal component analysis (PCA), Bayesian clustering estimated. F ST highlighted breeds. lines, Caracu Caldeano, had significant close 5%) despite their recent selection different uses (meat milk). This variability can be used animals, as well breeding programs Introgression identified, especially Curraleiro Pe-Duro breed. Gyr breed, however, low breed purity at genomic level due its very heterogeneous mixing pattern.