1. College of Animal Science and Technology Anhui Agricultural University 130, Changjiang West Road Hefei Anhui230036China
2. State Key Laboratory of Genetic Resources and Evolution and Yunnan Laboratory of Molecular Biology of Domestic Animals Kunming Institute of Zoology Chinese Academy of Sciences 32 Jiaochang Dong Road Kunming Yunnan650223China
3. Jiangsu Institute of Poultry Science Chinese Academy of Agriculture Science 58 cangjie Rode Yangzhou Jiangsu225125China
4. School of Agriculture and Natural Resources University of Phayao 19 Moo 2 Tambon Maeka Amphur Muang Phayao56000Thailand
5. Howard Hughes Medical Institute University of California Santa Cruz 1156 High St Santa Cruz CA95064USA
6. Department of Ecology and Evolutionary Biology University of California Santa Cruz 1156 High St Santa Cruz CA95064USA