The aim of this study was to identify allele variability and frequencies of six microsatellite markers (BM861, INRA124, INRA189, UMN0103, UMN0307 and UMN0504) specific to the Y-chromosome. DNA samples from 147 males of three Korean native and seven exotic cattle breeds were tested. Three (Chikso, Heugu, and Jeju black cattle) Korean native cattle (KNC) breeds showed Bos taurus genotype. In the neighbor-joining tree, based on Nei’s DA genetic distance, ten breeds represented main group. In addition, Bayesian clustering result showed that 3 main clusters are for individual allele variability and frequencies. Moreover, KNC breeds showed differences in genotype with B. taurus type when compared to previous studies. The molecular information of paternal lineage in this study would be useful for the conservation and utilization of three KNC breeds as genetic resources.

• 서상원(농촌진흥청 국립축산과학원 가축유전자원시험장 경상대학교 축산학과) | Sawgwon Suh
• 김영신(농촌진흥청 국립축산과학원 가축유전자원시험장) | Young-Sin Kim
• 조창연(농촌진흥청 국립축산과학원 가축유전자원시험장) | Chang-Yeon Cho
• 변미정(농촌진흥청 국립축산과학원 가축유전자원시험장) | Mi-Jeong Byun
• 최성복(농촌진흥청 국립축산과학원 가축유전자원시험장) | Seong-Bok Choi
• 김상우(농촌진흥청 국립축산과학원 가축유전자원시험장) | Sang-Woo Kim
• 고응규(농촌진흥청 국립축산과학원 가축유전자원시험장) | Yeoung-Gyu Ko
• 임현태(경상대학교 축산학과) | Hyun-Tae Lim
• 김재환(농촌진흥청 국립축산과학원 가축유전자원시험장) | Jae-Hwan Kim Corresponding author