Table 1. Ingredients and nutritional composition of the diets.
| Item | Diets | |
|---|---|---|
| Control | Treatment | |
| Ingredients (% of dry matter) | ||
| Chinese wildrye hay | 10 | 15 |
| Alfalfa hay | 25 | 0 |
| Corn silage | 25 | 25 |
| Corn | 21.97 | 33 |
| Pure wheat bran | 2 | 3 |
| Soybean meal | 14.97 | 22.4 |
| Limestone | 0.4 | 0.6 |
| Calcium phosphate dibasic | 0.08 | 0.1 |
| Salt | 0.28 | 0.4 |
| Premix a | 0.3 | 0.5 |
| Forage: concentrate (F: C) | 6: 4 | 4: 6 |
| Nutritional composition (% of dry matter) | ||
| NE, MJ/kg | 6.32 | 6.52 |
| CP, % | 17.24 | 17.27 |
| NDF, % | 38.81 | 35.07 |
| ADF, % | 23.66 | 19.31 |
| NFC, % | 32.58 | 37.51 |
| Ca, % | 0.78 | 0.44 |
| P, % | 0.30 | 0.33 |
a Premix provided: 3000, 1250, and 40 IU kg-1 of diet of vitamin A, D and E, and 6.25, 62.5, 62.5, 50, 0.25, 0.125, 0.125 mg kg-1 of diet of Cu, Fe, Zn, Mn, I, Se, Co, respectively.
NE, Net energy; CP, Crude Protein; NDF, Neutral Detergent Fiber; ADF, Acid Detergent Fiber; NFC, Non-Fiber Carbohydrate.