1. Key Laboratory of Animal Breeding, Reproduction and Molecular Design of Jiangsu Province, College of Animal Science and Technology, Yangzhou University, Yangzhou, Jiangsu 225009, P.R. China
2. College of Veterinary Medicine, Suez Canal University, Ismailia 41522, Egypt
3. Department of Orthopedics, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215006, P.R. China