1. Department of Veterinary Pharmacology, Faculty of Agriculture, University of Miyazaki, Miyazaki 889–2192, Japan
2. Department of Forensic Medicine and Toxicology, Faculty of Veterinary Medicine, Benha University, Toukh 13736, Egypt
3. Sumiyoshi Livestock Science Station, Field Science Center, Faculty of Agriculture, University of Miyazaki, Miyazaki 889–2192, Japan
4. Laboratory of Theriogenology, Faculty of Agriculture, University of Miyazaki, Miyazaki 889–2192, Japan