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

机译:遗传多样性,人口结构和巴西局部适应Zebu和牛磺酸品种的相关性使用SNP标记

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摘要

Genetic diversity is one of the most important issues in studies on conservation of cattle breeds and endangered species. The objective of this study was to estimate the levels of genetic differentiation between locally adapted taurine (Bos taurus taurus) and zebu (Bos taurus indicus) breeds in Brazil, which were genotyped for more than 777,000 SNPs. The fixation index (F (ST)), principal component analysis (PCA), and Bayesian clustering were estimated. The F (ST) highlighted genetic differentiation between taurine and zebu breeds. The taurine lines, Caracu and Caracu Caldeano, had significant genetic differentiation (F (ST) close to 5%) despite their recent selection for different uses (meat and milk). This genetic variability can be used for conservation of locally adapted animals, as well as for breeding programs on zebu breeds. Introgression of zebu in locally adapted breeds was identified, especially in Curraleiro P,-Duro breed. The Gyr breed, however, had low breed purity at genomic level due to its very heterogeneous mixing pattern.
机译:遗传多样性是养殖种类和濒危物种保护的最重要问题之一。本研究的目的是估算巴西局部适应的牛磺酸(Bos Taurus Taurus)和Zebu(Bos Taurus indumus)品种的遗传分化水平,该毒素是超过777,000个SNP的基因分型。估计固定索引(F(ST)),主成分分析(PCA)和贝叶斯聚类。 F(ST)突出了牛磺酸和Zebu品种之间的遗传分化。尽管他们最近的不同用途(肉和牛奶)选择,但牛磺酸线,Caracu和Carcu Caldeano(F(ST)接近5%)具有显着的遗传分化(F(St)。这种遗传变异可用于保护局部适应的动物,以及Zebu品种的繁殖程序。鉴定了Zebu在局部适应品种中的血气渗入,特别是在Cringaleiro p,-duro品种中。然而,由于其非常异质的混合图案,Gyr品种在基因组水平下具有低品种纯度。

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