1. College of Animal Science and Technology, Hunan Agricultural University, Hunan, China
2. R&D Department, Hunan Engineering Research Center of Poultry Production Safety, Hunan, China
3. Technical R&D Department, Beijing Deyuanshun Biotechnology Co, Ltd, Beijing, China
4. Technical R&D Department, Hunan Xiang Jia Husbandry Limited by Share Ltd, Changde, Hunan, China