| ADY | Active dry yeast |
| CON | Control |
| DFM | Direct fed microbial |
| DM | Dry matter |
| DMI | Dry matter intake |
| ECM | Energy corrected milk |
| Eh | Redox potential (mV) |
| FA | Fatty acid |
| FCM | Fat-corrected milk |
| H+ | Hydrogen |
| H2 | Dihydrogen |
| LPS | Lipopolysaccharide |
| MF | Milk fat |
| MOS | Mannan-oligosaccharide |
| MUFA | Mono-unsaturated fatty acid |
| MUN | Milk urea nitrogen |
| NEFA | Non-esterified fatty acid |
| NSC | Non-structural carbohydrate |
| SARA | Sub-acute ruminal acidosis |
| SCC | Somatic cell count |
| SNF | Solids non-fat |
| TMR | Total mixed ration |
| TS | Total solids |
| VFA | Volatile fatty acid |
| YCA | Yeast culture additive |
| YEA | Yeast extract additive |