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Position: Home > Articles > Assessment of Genetic Purity and Population Genomic Features in Black Angus Cattle Using Whole Genome Re-Sequencing China Cattle Science 2024,50 (2) 63-66

利用基因组重测序技术鉴定黑安格斯牛的纯度

作  者：
何亮宏;王楠;邓占钊;李双;刘学玮;雷初朝
单  位：
关键词：
黑安格斯牛;遗传多样性;群体遗传结构;纯度;全基因组
摘  要：
[目的]基于10头黑安格斯牛和60头对照组牛的全基因组重测序数据,分析黑安格斯牛的纯度、遗传多样性及群体结构.[方法]全基因组重测序技术和生物信息学方法.[结果]通过对10头黑安格斯牛全基因组数据进行分析,共检测到15,064,459个SNP位点,其核苷酸多样性(pi)为0.0015,观测杂合度(Ho)为0.2381,期望杂合度(He)为0.2430,表明黑安格斯牛的遗传多样性较低;主成分分析和群体遗传结构分析发现,黑安格斯牛与欧洲普通牛聚为一类,其中有4头黑安格斯牛存在偏离情况,表明这4头牛主要与中国瘤牛与东亚普通牛韩牛之间存在杂交.[结论]10头黑安格斯牛中,6头为纯种黑安格斯牛,4头为杂种牛.
译  名：
Assessment of Genetic Purity and Population Genomic Features in Black Angus Cattle Using Whole Genome Re-Sequencing
关键词：
Black Angus cattle%genetic diversity%population genetic structure%purity%whole genome
摘  要：
[Objective]This study utilizes whole-genome resequencing technology to evaluate the genetic integ-rity and diversity of Black Angus cattle.[Methods]Employing whole-genome resequencing data from 10 Black An-gus cattle and 60 control group cattle using bioinformatics tools and analyses,this study investigates the genetic pu-rity,diversity,and population structure.[Results]The whole-genome sequence data analysis of 10 Black Angus cattle revealed 15,064,459 SNP sites.The nucleotide diversity(pi)was recorded at 0.0015,with observed het-erozygosity(Ho)at 0.2381 and expected heterozygosity(He)at 0.2430,indicating a low genetic diversity within the breed.Principal component analysis and population genetic structure assessments showed that Black Angus cat-tle generally cluster with European taurine cattle.Notably,deviations in four Black Angus cattle suggest hybridiza-tion events predominantly with Chinese indicine cattle and East Asian breeds,such as Korean cattle.[Conclusion]Among the cattle examined,six were identified as purebred Black Angus,while four exhibited signs of hybridiza-tion.

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