TABLE 1.
Categories of chicken breeds.
| Population | Geographic Origin | Classification | Number |
| Silkies (SK) | Jiangxi Province, China | Indigenous Breeds | 89 |
| Shouguang (SG) | Shandong Province, China | 109 | |
| Tibetan (TB) | Tibet, China | 41 | |
| Hongshan (HS) | Hubei Province, China | 96 | |
| Beijing You (BY) | Beijing, China | 56 | |
| Houdan (HD) | France | 86 | |
| Luxi Game (LX-G) | Shandong Province, China | Fight Breeds | 10 |
| Henan Game (HN-G) | Henan Province, China | 11 | |
| Xishuangbanna Game (XS-G) | Yunnan Province, China | 10 | |
| Zhangzhou Game (ZZ-G) | Fujian Province, China | 11 | |
| Turpan Game (Tur-G) | Xinjiang, China | 10 | |
| Rhode Island Red (RIR) | Rhode Island, America | Commercial Breeds | 478 |
| White Leghorn (WL) | Tuscany, Italy | 230 | |
| Cornish (Cor) | Cornwall, England | 10 | |
| Red jungle fowl (RJF) | Daerah Istimewa Aceh, Indonesia | Wild Breed | 7 |
| Total | 1,254 |
TB: data of 15 Samples were collected from the Experimental Chicken Farm at the China Agricultural University, 10 samples were collected form Nimu, Tibet, 13 Samples were collected form Naidong, Tibet and 3 samples were collected form Lingzhi, Tibet. WL: data of 39 were collected from the experimental Chicken Farm at China Agricultural University and 191 samples were collected form a commercial company in Yanqing, Beijing. RIR: data came from two batches, the first data has 96 samples, the second data has 382 samples.