1 Key Laboratory of Agro-Ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Observation and Experiment Station of Animal Nutrition and Feed Science in South-Central China, Ministry of Agriculture, Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production, Changsha, Hunan, China; University of the Chinese Academy of Sciences, Beijing, China.
2 Institute of Apicultural Research, Chinese Academy of Agricultural Science, Beijing, China.
3 Key Laboratory of Agro-Ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Observation and Experiment Station of Animal Nutrition and Feed Science in South-Central China, Ministry of Agriculture, Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production, Changsha, Hunan, China.
4 Department of Drug Design and Pharmacology, University of Copenhagen, Copenhagen, Denmark.
5 College of Fisheries, Huazhong Agricultural University, Wuhan, Hubei, China; Department of Infectious Disease and Pathology, University of Florida, Gainesville, FL, USA.