1. Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Key Laboratory of Veterinary Biological Engineering and Technology, Ministry of Agriculture and Rural Affairs, Nanjing, China
2. College of Agriculture, Engineering & Science, University of KwaZulu-Natal, Durban, South Africa
3. Xicheng Animal Husbandry and Veterinary Station, Jintan District, Changzhou, China