1. Department of Veterinary Medicine, Faculty of Applied Biological Sciences, Gifu University, Gifu 501-1193, Japan
2. Nagoya Higashiyama Zoo and Botanical Gardens, Aichi 464-0804, Japan
3. Laboratory of Racing Chemistry, Tochigi 320-0851, Japan
4. Graduate School of Medicine, Hokkaido University, Sapporo 060-8638, Japan
5. Education and Research Center for Food Animal Health (GeFAH), Gifu University, Gifu 501-1193, Japan