1. Department of Animal Science, Tokyo University of Agriculture, 1737 Funako, Atsugi, Kanagawa 243-0034, Japan
2. Department of Genome Center, Tokyo University of Agriculture, 1-1-1 Sakuragaoka, Setagaya, Tokyo 156-8502, Japan
3. Chiba Prefectural Institute of Public Health, 666-2 Nitona, Chuo, Chiba, Chiba 260-8715, Japan
4. Technical Research Institute, Nishimatsu Construction Co., Ltd., 6-17-21 Shinbashi, Minato, Tokyo 105-0004, Japan
5. Biological Resource Center, National Institute of Technology and Evaluation, 2-5-8 Kazusakamatari, Kisarazu, Chiba 292-0818, Japan