Table 2.
Composition and nutrient levels of the experimental diets (DM basis).
| Items | CON | Whole-Plant Corn Silage Addition Level (%) | ||
|---|---|---|---|---|
| 5 | 10 | 15 | ||
| Ingredients (%) | ||||
| Corn | 69.00 | 66.10 | 63.20 | 60.30 |
| Soybean meal | 20.00 | 19.90 | 19.80 | 19.70 |
| 4% Premix (1) | 4.00 | 4.00 | 4.00 | 4.00 |
| Wheat bran | 7.00 | 5.00 | 3.00 | 1.00 |
| Whole-plant corn silage | 0.00 | 5.00 | 10.00 | 15.00 |
| Total | 100.00 | 100.00 | 100.00 | 100.00 |
| Nutrient levels (2) | ||||
| Metabolizable energy (MJ/kg) | 13.47 | 13.35 | 13.23 | 13.10 |
| CP (%) | 15.89 | 15.74 | 15.60 | 15.46 |
| CF (%) | 3.45 | 4.65 | 5.85 | 7.05 |
| Ca (%) | 0.50 | 0.62 | 0.74 | 0.85 |
| P (%) | 0.35 | 0.35 | 0.35 | 0.36 |
| Available phosphorus (%) | 0.10 | 0.10 | 0.11 | 0.11 |
| NDF (%) | 11.80 | 12.83 | 13.87 | 14.91 |
| ADF (%) | 5.25 | 6.34 | 7.43 | 8.53 |
| Lysine (%) | 0.85 | 0.83 | 0.82 | 0.80 |
| Threonine (%) | 0.58 | 0.57 | 0.56 | 0.55 |
| Methionine (%) | 0.24 | 0.23 | 0.23 | 0.23 |
(1) Premix provided the following per kg of diet: Fe (as ferrous sulfate) 2~7 g, Cu (as cupric oxide) 0.200–0.625 g, Zn (as zinc sulfate) 1.0–2.0 g, Mn (as manganese sulfate) 0.5–1.5 g, Se (as sodium sulfate) 3.0–10.0 mg, I 3.0–25.0 mg, VA 100–160 KIU, VD 30–80 KIU, VE 290 mg, VK3 0.0–90.0 mg, VB, 25 mg, VB6 25 mg, VB12 0.2 mg, pantothenic acid 180 mg, nicotinic acid 240 mg, and folic acid 10 mg; (2) nutrient levels are calculated values. CP: crude protein; CF: crude fiber; NDF: neutral detergent fiber; ADF: acid detergent fiber.