1. College of Animal Science and Technology, Henan University of Animal Husbandry and Economy, Zhengzhou, Henan, PR China;
2. Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Key Laboratory of Fishery Drug Development, Ministry of Agriculture, Key Laboratory of Aquatic Animal Immune Technology, Guangdong Province, Guangzhou, PR China;
3. Liuzhou Fishery, Animal Husbandry and Veterinary Bureau, Liuzhou, Guangxi, PR China