Table 1.
Composition and nutrient levels of the basal diets
| Items | d 1–21 | d 22–42 |
|---|---|---|
| Ingredient, % | ||
| Corn (CP 8.0%) | 51.30 | 53.25 |
| Soybean meal (CP 44%) | 37.00 | 33.50 |
| Wheat powder (CP 13.5%) | 4.20 | 5.00 |
| Soybean oil | 4.20 | 5.00 |
| DL-Methionine, 99% | 0.25 | 0.15 |
| L-Lysine HCl, 78% | 0.25 | 0.20 |
| Limestone | 1.12 | 1.00 |
| Dicalcium phosphate | 1.00 | 1.20 |
| Sodium chloride | 0.35 | 0.35 |
| Choline chloride, 50% | 0.12 | 0.15 |
| Vitamin premixa | 0.02 | 0.02 |
| Mineral premixb | 0.10 | 0.10 |
| NSP enzymec | 0.02 | 0.02 |
| Phytase | 0.02 | 0.01 |
| Antioxidantd | 0.05 | 0.05 |
| Total | 100.00 | 100.00 |
| Nutrient levelse | ||
| Metabolizable energy, Mcal/kg | 3.03 | 3.10 |
| Crude protein, % | 21.45 | 20.05 |
| Total calcium, % | 0.77 | 0.76 |
| Total phosphorus, % | 0.57 | 0.59 |
| Available phosphorus, % | 0.27 | 0.30 |
| Lysine, % | 1.33 | 1.21 |
| Methionine, % | 0.56 | 0.44 |
| Methionine + Cystine, % | 0.90 | 0.77 |
| Threonine, % | 0.80 | 0.75 |
| Tryptophan, % | 0.25 | 0.23 |
aVitamin premix provided per kilogram of complete diet: vitamin A, 10,000 IU; vitamin D3, 2,400 IU; vitamin E, 20 IU; vitamin K3, 2.0 mg; vitamin B1, 1.6 mg; vitamin B2, 6.4 mg; vitamin B6, 2.4 mg; vitamin B12, 0.020 mg; nicotinic acid, 30 mg; pantothenic acid, 9.2 mg; folic acid, 1.0 mg; biotin, 0.10 mg
bMineral premix provided per kilogram of complete diet: iron, 40 mg; copper, 8 mg; manganese, 60 mg; zinc, 55 mg; iodine, 0.75 mg; selenium, 0.15 mg
cNSP enzyme: non-starch polysaccharide enzyme
dAntioxidant: 33% ethoxyquinoline
eCalculated value based on the analyzed data of experimental diets