1. Laboratory of Theriogenology, Faculty of Agriculture, University of Miyazaki, Miyazaki 889-2192, Japan
2. Department of Theriogenology, Faculty of Veterinary Medicine, Mansoura University, Mansoura 35516, Egypt
3. Sumiyoshi Science Field, University of Miyazaki, Miyazaki 880-0121, Japan
4. Veterinary Teaching Hospital, Faculty of Agriculture, University of Miyazaki, Miyazaki 889-2192, Japan
5. Department of Obstetrics and Gynecology, Faculty of Medicine, University of Miyazaki, Miyazaki 889-1692, Japan
6. Laboratory of Parasitic Diseases, Faculty of Agriculture, University of Miyazaki, Miyazaki 889-2192, Japan