| DFD | Dietary fecal deodorant |
| SPME | Solid-phase microextraction |
| eNose | Electronic nose |
| YSE | Yucca schidigera extract |
| QSE | Quillaja saponaria extract |
| FOS | Fructooligosaccharides |
| OBG | Oat beta-glucans |
| VFA | Volatile fatty acid |
| BCVFA | Branched-chain volatile fatty acids |
| VOCs | Volatile organic compounds |
| PRAS | Pre-reduced anaerobe sterilized |
| PCA | Principal component analysis |
| HCA | Hierarchical cluster analysis |
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