1. Key
Laboratory of Agro-Ecological Processes in Subtropical Region, Institute
of Subtropical Agriculture, Chinese Academy of Sciences; National
Engineering Laboratory for Pollution Control and Waste Utilization
in Livestock and Poultry Production; Hunan Provincial Engineering
Research Center for Healthy Livestock and Poultry Production; Scientific
Observing and Experimental Station of Animal Nutrition and Feed Science
in South-Central, Ministry of Agriculture, Changsha, Hunan 410125, P. R. China
2. University of Chinese Academy of Sciences, Beijing 100039, China
3. Department of Animal Science, Hunan Agriculture University, Changsha, Hunan 410125, China
4. Hunan Co-Innovation Center of
Animal Production Safety, Changsha, Hunan 410128, China
5. School of Food, Jiangsu Food & Pharmaceutical Science College, Higher Education Park in Huaian, Huaian Jiangsu Province 223005, P. R. China
6. Institute of Apicultural
Research, Chinese Academy of Agricultural Sciences, Beijing 100093, China