Assessment of Genetic Purity and Population Genomic Features in Black Angus Cattle Using Whole Genome Re-Sequencing
[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.
Black Angus cattlegenetic diversitypopulation genetic structurepuritywhole genome
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NSTL
万方数据
