Table 1.
Feed composition and ingredients of experiment basal diets
| Component | Starter (1 to 21 d) |
Grower (22 to 35 d) |
Finisher (36 to 42 d) |
|---|---|---|---|
| Ingredient (%) | |||
| Corn | 57.1 | 62.4 | 67.6 |
| Soybean meal (44% CP) | 37.0 | 32.0 | 27.0 |
| Vegetable oil | 1.25 | 1.70 | 1.58 |
| DL-met | 0.29 | 0.23 | 0.22 |
| L-lys HCl | 0.07 | 0.03 | 0.09 |
| Threonine | 0.05 | 0.03 | 0.04 |
| Dicalcum phosphate | 1.85 | 1.61 | 1.51 |
| Limestone | 1.15 | 0.98 | 0.95 |
| NaCl | 0.32 | 0.28 | 0.28 |
| Soduim bicarbonate | 0.15 | 0.1 | 0.1 |
| Cholincholoride | 0.17 | 0.14 | 0.14 |
| Vitamin permix1 | 0.3 | 0.25 | 0.25 |
| Mineral permix2 | 0.3 | 0.25 | 0.25 |
| Calculated analysis | |||
| ME (kcal/kg) | 2,907 | 3,003 | 3,050 |
| CP (%) | 22.13 | 20.09 | 18.21 |
| Ca (%) | 1.04 | 0.90 | 0.85 |
| AvP (%) | 0.52 | 0.45 | 0.42 |
| Met (%) | 0.58 | 0.50 | 0.47 |
| Lys (%) | 1.15 | 1.00 | 0.92 |
| Thr (%) | 0.76 | 0.67 | 0.62 |
1
The vitamin mix provided the following (per kg of diet): thiamin mononitrate, 2.5 mg; nicotinic acid, 45 mg; riboflavin, 6 mg; d-calcium pantothenate, 15 mg; vitamin B12 (cobalamin), 0.025 mg; pyridoxine hydrochloride, 3 mg; d-biotin, 0.15 mg; folic acid, 1.5 mg; choline chloride, 840 mg; cholecalciferol, 4,000 IU; trans-retinyl acetate, 10,000 IU; all-rac-α-tocopheryl acetate, 55 IU; ethoxyquin, 1.25 mg.
2
The trace mineral mix provided the following (per kg of diet): manganese (manganase oxide), 120 mg; iron (ferrous sulfate), 40 mg; zinc (zinc oxide), 100 mg; copper (copper sulfat), 16 mg; iodine (calcium iodate), 1.25 mg; selenium (sodium selenate), 0.3 mg.