| LAB | lactic acid bacteria |
| MRS | de Man, Rogosa, and Sharpe |
| LB | Luria–Bertani |
| H | Hotan Black Chicken |
| B | Baicheng You Chicken |
| HD | duodenum of Hotan Black Chicken |
| HJ | jejunum of Hotan Black Chicken |
| HI | ileum of Hotan Black Chicken |
| HC | cecum of Hotan Black Chicken |
| BD | duodenum of Baicheng You Chicken |
| BJ | jejunum of Baicheng You Chicken |
| BI | ileum of Baicheng You Chicken |
| BC | cecum of Baicheng You Chicken |
| OTUs | operational taxonomic units |
| PCA | principal component analysis |
| PCoA | principal coordinate analysis |
| BSH | bile salt hydrolase |