| Item | Dietary treatment | |
| O3 | C | |
| Ingredient, kg DM cow−1 day−1 |
|
|
| Alfalfa | 8.00 | 8.00 |
| Corn silage | 5.88 | 5.88 |
| Soybean meal | 2.71 | 2.71 |
| Ground corn | 2.76 | 2.76 |
| Alfalfa hay | 1.33 | 1.33 |
| Commercial feed | 3.62 | 3.62 |
| Cracked corn | 0.88 | 2.30 |
| Ca-FA | 0.70 | 0.00 |
| Nutrient |
|
|
| DM, % | 40.38 | 41.02 |
| CP, % of DM | 18.31 | 18.26 |
| NDF, % of DM | 24.35 | 24.22 |
| ADF, % of DM | 13.48 | 13.28 |
| ADL, % of DM | 2.36 | 2.35 |
| EE, % of DM | 6.61 | 4.48 |
| Ash, % of DM | 7.57 | 7.13 |
| ME, Mcal kg DM−1 | 2.79 | 2.71 |