| Parameter | Treatment | |
| Fresh (frozen) Alfalfa Control | Alfalfa Silage | |
| Feed Amino Acids Composition (%) |
|
|
| Total | 60.25 | 53.96 |
| Essential | 34.23 | 27.53 |
| Non-Essential | 26.02 | 26.43 |
| Feed Digesta Flows to the Duodenum, (g/d) |
| |
| Total | 139.34a | 109.49b |
| Essential | 73.25a | 57.38b |
| Non-Essential | 66.09a | 52.11b |
| Post-prandial Differences in Plasma Amino Acids (nmol/mL) |
| |
| Essential | −575a | −106b |
| Non-Essential | −320 | 71 NS |