Institution: | a Institute of Agricultural Science and Technology, Kyungpook National University, Daegu 702-701, South Korea b Biotechnology division, Korea Forest Research Institute, Suwon 441-350, South Korea c Grassland and Forage crops division, National Livestock Research Institute, Suwon 441-706, South Korea d Department of Animal Science and Biotechnology, Kyungpook National University, Daegu 702-701, South Korea |