1. Department of Theriogenology, Faculty of Veterinary Medicine, Cairo University, Giza 12211, Egypt
2. Laboratory of Veterinary Physiology, Tokyo University of Agriculture and Technology, Tokyo183–8509, Japan
3. Laboratory of Veterinary Pharmacology, Tokyo University of Agriculture and Technology, Tokyo 183–8509, Japan
4. Department of Pharmacology, Faculty of Veterinary Medicine, Suez Canal University, Ismailia, 41522, Egypt
5. Department of Theriogenology, Faculty of Veterinary Medicine, Kafrelsheikh University, Kafrelsheikh 13561, Egypt