1. Institute of Traditional South Chinese Veterinary Pharmacology, College of Animal Science and Technology, Hainan University, Haikou, P R China
2. Institute of Traditional Chinese Veterinary Medicine, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, P R China
3. Wenchang Longquan Wenchang Chicken Industrial Co. Ltd, Wenchang, P R China