Table 2.
Composition and nutrient level of the base ration (dry matter basis).
| Items | Experimental diets | ||
|---|---|---|---|
| CON | SB | FSB | |
| Ingredient composition (%) | |||
| Corn | 23.40 | 23.05 | 23.05 |
| Soybean meal | 5.50 | 7.00 | 7.00 |
| Corn gluten feed | 2.30 | 0.50 | 0.50 |
| Cottonseed meal | 1.20 | 1.50 | 1.50 |
| Slow-released urea | 0.20 | 0.35 | 0.35 |
| Distillers grains | 45.00 | 45.00 | 45.00 |
| Hybrid giant napier | 20.00 | ||
| Sugarcane bagasse | 20.00 | ||
| Fermented Sugarcane bagasse | 20.00 | ||
| limestone | 0.90 | 0.90 | 0.90 |
| CaHCO3 | 0.00 | 0.20 | 0.20 |
| MgO | 0.20 | 0.20 | 0.20 |
| NaCl | 0.32 | 0.32 | 0.32 |
| NaHCO3 | 0.48 | 0.48 | 0.48 |
| Premix1 | 0.50 | 0.50 | 0.50 |
| Total | 100 | 100 | 100 |
| Nutrient content | |||
| NEmf/(MJ/kg)2 | 9.54 | 9.07 | 9.15 |
| Crude protein (%) | 10.72 | 10.62 | 10.65 |
| Ether extract (%) | 2.74 | 2.53 | 2.55 |
| Neutral detergent fiber (%) | 45.04 | 48.20 | 43.09 |
| Acid detergent fiber (%) | 23.73 | 26.35 | 23.86 |
| Acid detergent lignin (%) | 1.67 | 4.38 | 3.81 |
| Calcium (%) | 0.48 | 0.47 | 0.48 |
| Phosphorus (%) | 0.32 | 0.30 | 0.31 |
1One kg of premix contained the following: VA 1600000 IU, VD3 60,000 IU, VE 6000 IU, Cu 2 g, Fe 12 g, Mn 8 g, Zn 8 g, Se 60 mg, I 120 mg, Co 40 mg. 2NEmf was a calculated value, NEmf = (NEm + NEg) × F, F was the correction coefficient for NEmf, reference to Feeding Standard of Beef Cattle (NY/T 815-2004), while the other nutrient levels were measured value.