1. Animal Products Processing Division; Livestock Research Institute; Council of Agriculture; Tainan Taiwan
2. Department of Animal Science; National Chung Hsing University; Taichung Taiwan
3. National Taichung Nursing College; Taichung Taiwan
4. Department of Animal Science; National Pingtung University of Science and Technology; Pingtung County Taiwan
5. School of Veterinary Medicine; Azabu University; Sagamihara Japan