1. Jiangsu Academy of Agricultural Sciences, Institute of Animal Science, Nanjing, China.
2. The Jiangsu Provincial Platform for Conservation and Utilization of Agricultural Germplasm, Nanjing, China.
3. Key Laboratory of Crop and Animal Integrated Farming, Ministry of Agriculture, Nanjing, China.
4. College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China.