1. State Key Laboratory of Animal Nutrition, Department of Animal Genetics and Breeding, National Engineering Laboratory for Animal Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, China
2. Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
3. Department of Genetics, Evolution and Environment, University College London, London, UK
4. Department of Organismal Biology, Evolutionary Biology Centre, Uppsala University, Uppsala, Sweden
5. Centre of Evolutionary and Ecological Studies, Marine Evolution and Conservation Group, University of Groningen, Groningen, The Netherlands
6. Department of Animal Sciences, Center for Reproductive Biology, Veterinary and Biomedical Research Building, Washington State University, Pullman, United States
7. Beijing Municipal General Station of Animal Science, Beijing, China
8. Institute of Animal Husbandry and Veterinary Medicine, Anhui Academy of Agricultural Sciences, Hefei, China
9. Poultry Institute, Chinese Academy of Agriculture Science, Yangzhou, China
10. Institute of Pekin Duck, Beijing, China
11. Cherry Valley farms (xianghe) Co., Ltd, Langfang, China