1. Division of Animal and Dairy Science; Chungnam National University; Daejeon 305-764 Korea
2. Indonesian Agency for Agricultural Research and Development; Ministry of Agriculture; Jakarta 12540 Indonesia
3. Animal Breeding and Genetics Division; National Institute of Animal Science; Seonghwan 31000 Korea
4. Hanwoo Genetic Improvement Center; National Agricultural Cooperative Federation; Chungnam 356-831 Korea