Abstract
1 Department of Life Science, Chung-Ang University, Seoul 156-756, Republic of Korea
2 Environmental Biotechnology National Core Research Center, Gyeongsang National University, Jinju 660-701, Republic of Korea
3 Division of Environmental Science and Ecological Engineering, Korea University, Seoul 136-701, Republic of Korea
4 Department of Animal Science and Technology, Sunchon National University, Sunchon 540-742, Republic of Korea