| N | Nitrogen |
| PH | Plant height |
| SD | Stem diameter |
| FiYield | First-cycle yield |
| ReYield | Regrowth yield |
| Yield | Total yield |
| N-NH3 | Ammonia nitrogen |
| DM | Dry matter |
| MM | Mineral matter |
| CP | Crude protein |
| NDF | Neutral detergent fiber |
| ADF | Acid detergent fiber |
| TDN | Total digestible nutrient |
| IVDMD | in vitro dry matter digestibility |
| IVNDFD | in vitro neutral detergent fiber digestibility |
| ACE | Acetic acid |
| BUT | Butyric acid |