1. NODAI Genome Research Center, Tokyo University of Agriculture, Tokyo, Japan
2. Laboratory of Animal Health, Department of Animal Science, Tokyo University of Agriculture, Funako, Atsugi, Kanagawa, Japan
3. Chiba Prefectural Institute of Public Health, Nitona, Chuo, Chiba, Japan
4. Technical Research Institute, Nishimatsu Construction Co. Ltd., Shinbashi, Minato-ku, Tokyo, Japan
5. Biological Resource Center, National Institute of Technology and Evaluation (NBRC), Kisarazu, Chiba, Japan
6. Department of Animal Science, Tokyo University of Agriculture, Funako, Atsugi, Kanagawa, Japan