Table 2.
Composition and calculated nutrient levels of phase 2 (28 to 46 wk of age) diets.1
| Item | CON | Ile70 | Ile80 | Ile90 | Ile100 |
|---|---|---|---|---|---|
| Ingredient (g/kg) | |||||
| Corn | 549.5 | 546.0 | 546.0 | 546.0 | 546.0 |
| SBM 46% | 185.2 | 162.6 | 162.6 | 162.6 | 162.6 |
| Wheat | 80.0 | 80.0 | 80.0 | 80.0 | 80.0 |
| Limestone fine | 67.7 | 71.7 | 71.7 | 71.7 | 71.7 |
| Limestone course | 27.1 | 28.7 | 28.7 | 28.7 | 28.7 |
| Pork meal-58% | 30.6 | 10.0 | 10.0 | 10.0 | 10.0 |
| Corn DDGS | 5.0 | 5.0 | 5.0 | 5.0 | 5.0 |
| Corn starch | 15.00 | 46.34 | 45.59 | 44.82 | 44.04 |
| Soy oil | 5.2 | 5.5 | 5.5 | 5.5 | 5.5 |
| Vitamin and trace premix2 | 10.0 | 10.0 | 10.0 | 10.0 | 10.0 |
| Monocalcium phosphate | 14.4 | 20.2 | 20.2 | 20.2 | 20.2 |
| Sodium bicarbonate | 1.9 | 2.3 | 2.3 | 2.3 | 2.3 |
| Salt | 2.3 | 2.3 | 2.3 | 2.3 | 2.3 |
| DL-Methionine-99% | 2.08 | 2.51 | 2.51 | 2.51 | 2.51 |
| L-Lysine HCL | 0.82 | 2.10 | 2.10 | 2.10 | 2.10 |
| L-Threonine-98.5% | 0.35 | 0.96 | 0.96 | 0.96 | 0.96 |
| L-Valine-95% | 0.00 | 0.72 | 0.72 | 0.72 | 0.72 |
| L-Tryptophan-98.5% | 0.00 | 0.11 | 0.11 | 0.11 | 0.11 |
| L-Isoleucine-92% | 0.00 | 0.00 | 0.75 | 1.52 | 2.30 |
| Titanium dioxide | 3.00 | 3.00 | 3.00 | 3.00 | 3.00 |
| Calculated values (%) | |||||
| AMEn (kcal/kg) | 2,750 | 2,750 | 2,750 | 2,750 | 2,750 |
| Crude protein | 16 | 14 | 14 | 14 | 14 |
| SID amino acids (%) | |||||
| Arg | 0.90 | 0.77 | 0.77 | 0.77 | 0.77 |
| Glu | 2.74 | 2.54 | 2.54 | 2.54 | 2.54 |
| His | 0.35 | 0.31 | 0.31 | 0.31 | 0.31 |
| Ile | 0.57 | 0.50 | 0.57 | 0.64 | 0.71 |
| Leu | 1.24 | 1.11 | 1.11 | 1.11 | 1.11 |
| Leu + Val | 1.74 | 1.69 | 1.69 | 1.69 | 1.69 |
| Lys | 0.71 | 0.71 | 0.71 | 0.71 | 0.71 |
| Met | 0.43 | 0.45 | 0.45 | 0.45 | 0.45 |
| Met + Cys | 0.64 | 0.64 | 0.64 | 0.64 | 0.64 |
| Phe | 0.66 | 0.58 | 0.58 | 0.58 | 0.58 |
| Phe + Tyr | 1.09 | 0.98 | 0.98 | 0.98 | 0.98 |
| Thr | 0.50 | 0.50 | 0.50 | 0.50 | 0.50 |
| Trp | 0.16 | 0.16 | 0.16 | 0.16 | 0.16 |
| Val | 0.63 | 0.62 | 0.62 | 0.62 | 0.62 |
| Calcium (%) | 4.3 | 4.4 | 4.4 | 4.4 | 4.4 |
| Total phosphorus (%) | 0.73 | 0.73 | 0.73 | 0.73 | 0.73 |
Abbreviations: CON, control; SID, standardized ileal digestible.
CON: Control treatment formulated to provide Ile requirements through intact protein only. Ile70-100: Protein-restricted diets fortified with L-Ile to meet SID Ile:Lys ratios of 70, 80, 90, 100.
Vitamins and minerals provided per kilogram of premix: vitamin A, 1,200,000 IU; vitamin D3, 500,000 IU; vitamin E, 8,000 IU; vitamin B12, 1,700 mcg; biotin, 22,000 mcg; menadione, 330 mg; thiamin, 400 mg; riboflavin, 800 mg; pantothenic acid, 2,000 mg; pyridoxine, 430 mg; niacin 65,000 mg; folic acid, 220 mg; choline, 60,000 mg; iron, 6,000 mg; copper, 1,000 mg, manganese, 7,000 mg, zinc, 7,000 mg, iodine, 100 mg.