Table 2.
Ingredients and nutrient levels of the experimental diets for Shaziling pigs (30~50 kg and >50 kg) (air-dried, %).
| Dietary Protein Levels | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Item | 30–50 kg | >50 kg | ||||||||
| +20% | +10% | 0 | −10% | −20% | +20% | +10% | 0 | −10% | −20% | |
| Ingredients, % | ||||||||||
| Corn | 47.32 | 51.76 | 56.07 | 61.58 | 67.04 | 62.04 | 66.04 | 70.55 | 74.35 | 78.63 |
| Soybean meal | 17.72 | 13 | 8 | 3.3 | 0 | 14 | 10 | 5.5 | 1.7 | 0 |
| Corn gluten meal | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Wheat bran | 31.18 | 31.46 | 31.96 | 30.96 | 28.5 | 20.18 | 20.18 | 20.18 | 20.18 | 16 |
| Soybean oil | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Lys | 0.32 | 0.32 | 0.45 | 0.55 | 0.6 | 0.32 | 0.32 | 0.45 | 0.36 | 0.4 |
| Met | 0.2 | 0.2 | 0.2 | 0.22 | 0.22 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 |
| Thr | 0.12 | 0.16 | 0 | 0.25 | 0.27 | 0.12 | 0.16 | 0.2 | 0.25 | 0.2 |
| Trp | 0.02 | 0.05 | 0.07 | 0.09 | 0.11 | 0.02 | 0.05 | 0.07 | 0.09 | 0.1 |
| CaHPO4 | 0.8 | 0.73 | 0.73 | 0.73 | 0.76 | 0.8 | 0.73 | 0.73 | 0.73 | 1.61 |
| CaCO3 | 1.02 | 1.02 | 1.02 | 1.02 | 1.2 | 1.02 | 1.02 | 0.82 | 0.84 | 1.56 |
| Salt | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 |
| Premix a | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Nutrient levels b | ||||||||||
| Digestible energy, MJ/kg | 12.19 | 12.18 | 12.12 | 12.74 | 12.23 | 12.73 | 12.73 | 12.74 | 12.74 | 12.71 |
| Crude protein, % | 16.81 | 15.41 | 14.06 | 14.43 | 11.4 | 14.46 | 13.27 | 12.03 | 10.81 | 9.71 |
| Calcium, % | 0.67 | 0.64 | 0.62 | 0.55 | 0.67 | 0.65 | 0.62 | 0.53 | 0.52 | 0.98 |
| Total phosphorus, % | 0.66 | 0.63 | 0.62 | 0.56 | 0.57 | 0.57 | 0.55 | 0.53 | 0.52 | 0.63 |
| Available phosphorus, % | 0.28 | 0.27 | 0.26 | 0.24 | 0.25 | 0.25 | 0.23 | 0.23 | 0.22 | 0.34 |
a Premix provided for 1 kg of the diet: Cu, 128 mg; Mn, 97.6 mg; Zn 109 mg; Fe, 197.6 mg; Se, 1 mg; I, 1 mg; Co, 1 mg; VA, 32,500 IU; VD3, 10,000 IU; VE, 80 IU; VK3, 10 mg; VB1, 10 mg/kg; VB2, 25 mg; VB6, 8 mg; VB12, 0.075 mg; biotin, 0.075 mg; folic acid, 5 mg; nicotinamide, 100 mg; pantothenic acid, 50 mg; choline, 1600 mg; mildewcide, 0.10%; ethoxyquinoline (33%), 0.05%; acidifier, 0.25%. b Crude protein was measured, and others were calculated.