Table 1.
Ingredient and nutrient compositions of experimental diets
| Ingredients (% of DM)1 | Farm 1 | Farm 2 |
|---|---|---|
| Alfalfa hay | 15.0 | 12.0 |
| Leymus chinensis | 3.0 | 9.0 |
| Wheat straw | 5.0 | 9.0 |
| Maize silage | 25.0 | 15.0 |
| Maize | 27.0 | 30.0 |
| Wheat bran | 3.0 | 1.4 |
| Soybean meal | 12.85 | 15.0 |
| Cottonseed meal | 6.0 | 5.0 |
| Calcium carbonate | 0.4 | 0.85 |
| Calcium hydrogen phosphate | 0.75 | 0.75 |
| Sodium bicarbonate | 0.75 | 0.75 |
| Sodium chloride | 0.5 | 0.5 |
| Dairy premix2 | 0.75 | 0.75 |
| Nutrient composition (% of DM) | ||
| NEL (Mcal/kg of DM) | 1.59 | 1.63 |
| Crude protein | 15.4 | 15.9 |
| Neutral detergent fiber | 38.9 | 28.7 |
| Acid detergent fiber | 26.0 | 23.2 |
| Non-fiber carbohydrates | 37.1 | 38.3 |
| Calcium | 0.89 | 0.85 |
| Phosphorous | 0.52 | 0.56 |
1
Fed as TMR.
2
Contained: Mn, 0.24%; K, 0.5%; S, 0.2%; Zn, 4,000 mg/kg; Cu, 1,000 mg/kg; Mn, 2,500 mg/kg; I, 64 mg/kg; Co, 5 mg/kg; vitamin A, 1,000,000 IU/kg; vitamin D, 3,000,000 IU/kg; and vitamin E, 82,000 IU/kg.