earticle

영어

In this study, 844 Hanwoo proven bulls in South Korea (called KPN) were classified into 8 groups based on their birth year. Microsatellite (MS) marker information for paternity identification of each individual is pr ovided at the homepage of the National Agricultural Cooperation Federation, Korea (NACF) and is mainly fo r the analysis of genetic diversity and structural changes. The polymorphism analysis of KPN whole groups revealed the average number of alleles in each marker (number of alleles), the expected heterozygosity (Hex), the observed heterozygosity (Hob), the polymorphism information content (PIC) and the Fis mean as 10.54, 0.76 4, 0.773, 0.727 and -0.014, respectively. For group D, with the birth year 2004-2005, the Hex and Hob were 0.777 and 0.792 respectively and the PIC was 0.740. The Hex of group C and D, with birth years 2003-2004 and 2007 -2008, respectively, were greater than Hob. In all the other groups, Hob was greater than Hex. Genetic compositi on and structure were analyzed using STRUCTURE software. According to the analyzed results, the generatio n of Hanwoo groups showed changes in specific genetic components according to the flow. It was confirmed that the continuous improvement in the Hanwoo affects the genetic structure of the proven bulls group. The results of this study are expected to be used for enhancing the efficiency of Hanwoo improvement project.