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<p>The first step of breeding program is the study on genetic diversity in breeds and varieties. To develop a program for fast-growing and multiparous new breed, the genetic diversity, differentiation and population structure were analyzed in economically important five sheep (<i>Ovis aries</i>) breeds, reared in the DPR Korea, using 15 microsatellite markers. All breeds exhibited moderate to high levels of genetic diversity and were found to be heterozygous with a range of 0.579–0.692. In addition, the average number of alleles is 5.94–7.89, allele abundance is 5.727–7.611, and inbreeding coefficient is 0.009–0.115. The UPGMA dendrogram divided five sheep populations into two groups at genetic distance 0.27, which was consistent with the classification according to geographical and economic values, and was supported by the results of the STRUCTURE analysis. On the other hand, estimates of Bayesian population using STRUCTURE indicate that five populations are valuable as germplasm and that there is a possibility of breed improvement by cross breeding. The microsatellite markers used in this study will contribute to improved adaptability and increased production of sheep breeds, enabling scientific conservation management and efficient use of sheep genetic resources.</p>

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Analysis of genetic relationships between five sheep breeds using microsatellite markers

  • 期刊论文

  • 发表日期：

    2026年3月18日

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  • Won-Sok Ri,
  • Song-Hyok Kim,
  • Song-Hyok Pak,
  • Sam-Rang Song,
  • Un-Hyang Ho,
  • Song-Hun Jang,
  • Chung-Il Yo

摘要

The first step of breeding program is the study on genetic diversity in breeds and varieties. To develop a program for fast-growing and multiparous new breed, the genetic diversity, differentiation and population structure were analyzed in economically important five sheep (Ovis aries) breeds, reared in the DPR Korea, using 15 microsatellite markers. All breeds exhibited moderate to high levels of genetic diversity and were found to be heterozygous with a range of 0.579–0.692. In addition, the average number of alleles is 5.94–7.89, allele abundance is 5.727–7.611, and inbreeding coefficient is 0.009–0.115. The UPGMA dendrogram divided five sheep populations into two groups at genetic distance 0.27, which was consistent with the classification according to geographical and economic values, and was supported by the results of the STRUCTURE analysis. On the other hand, estimates of Bayesian population using STRUCTURE indicate that five populations are valuable as germplasm and that there is a possibility of breed improvement by cross breeding. The microsatellite markers used in this study will contribute to improved adaptability and increased production of sheep breeds, enabling scientific conservation management and efficient use of sheep genetic resources.