Table 1.
Ingredient proportion and chemical composition of the experimental diets (% DM basis)
| Items | Experimental diets1) | |
|---|---|---|
|
| ||
| LC | HC | |
| Ingredient composition (%) | ||
| Maize silage | 33.00 | 15.00 |
| Alfalfa hay, 15%CP | 32.00 | 30.00 |
| Corn grain | 11.24 | 29.74 |
| Soybean meal, 43%CP | 14.00 | 14.50 |
| Wheat bran | 5.00 | 6.00 |
| Salt | 0.76 | 0.76 |
| Mineral and vitamin premix2) | 4.00 | 4.00 |
| Nutrient content | ||
| Dry matter (%) | 57.40 | 71.61 |
| Metabolizable energy3) (MJ/kg) | 9.82 | 10.94 |
| Crude protein (%) | 14.50 | 14.50 |
| Ether extract (%) | 3.26 | 3.30 |
| Ash (%) | 6.14 | 5.28 |
| Calcium (%) | 0.44 | 0.39 |
| Phosphorus (%) | 0.26 | 0.28 |
| NDF (%) | 37.91 | 29.45 |
| ADF(%) | 25.06 | 19.20 |
| Chromium (mg/kg) | 0.28 | 0.24 |
CP, crude protein; NDF, neutral detergent fiber; ADF, acid detergent fiber.
1)
LC and HC refer to diets with forage to concentrate ratios of 65:35, and 45:55, respectively.
2)
Premix provided the following for per kg of diet: Vit A 150,000 IU, Vit D3 50,000 IU, Vit E 375 IU, Fe 9,500 mg, Cu 560 mg, Mn 2,000 mg, Se 6.5 mg, I 65 mg, Zn 1 875 mg, Co 25 mg.
3)
ME = 0.134DMD+0.235EE+1.23 [40], ME, metabolizable energy; DMD, dry matter digestibility; EE, ether extract.