Table 1.
Composition and nutrient levels of basal diets (%, as-fed basis).
| Ingredients | D 1 to 14 | D 15 to 28 |
|---|---|---|
| Corn | 60.02 | 63.00 |
| Soybean meal, 43% | 10.00 | 15.50 |
| Extruded soybean | 12.00 | 8.00 |
| Spray dried plasma protein | 3.00 | 0.00 |
| Fish meal, 64.6% | 5.00 | 4.00 |
| Whey powder, 3.8% | 4.00 | 4.00 |
| Soybean oil | 2.76 | 2.27 |
| Dicalcium phosphate | 0.67 | 0.66 |
| Limestone | 0.96 | 0.80 |
| Salt | 0.30 | 0.30 |
| L-lysine HCl, 78% | 0.36 | 0.45 |
| DL-Methionine, 98% | 0.08 | 0.08 |
| L-Threonine, 98% | 0.08 | 0.15 |
| L-Tryptophan, 98% | 0.02 | 0.04 |
| Chromic oxide | 0.25 | 0.25 |
| Vitamin-mineral premix 1 | 0.50 | 0.50 |
| Calculated nutrient levels 2 | ||
| Digestible energy, MJ/kg | 14.41 | 14.07 |
| Crude protein | 19.28 | 17.21 |
| Calcium | 0.80 | 0.70 |
| Digestible phosphorus | 0.40 | 0.33 |
| Standardized ileal digestible lysine | 1.44 | 1.47 |
| Standardized ileal digestible methionine | 0.45 | 0.43 |
| Standardized ileal digestible threonine | 0.93 | 0.86 |
| Standardized ileal digestible tryptophan | 0.22 | 0.20 |
Note: 1 Vitamin and mineral premix provided the following per kilogram of diet: 12,000 IU vitamin A as vitamin A acetate, 2500 IU vitamin D as vitamin D3, 30 IU vitamin E as DL-α-tocopheryl acetate, 12 μg of vitamin B12, 3 mg vitamin K as menadione sodium bisulfate, 15 mg D-pantothenic acid as calcium pantothenate, 40 mg of nicotinic acid, 400 mg choline as choline chloride, 30 mg Mn as manganese oxide, 80 mg Zn as zinc oxide, 90 mg Fe as iron sulfate, 10 mg Cu as copper sulfate, 0.35 mg I as ethylenediamine dihydroiodide, and 0.3 mg Se as sodium selenite. 2 Digestible energy, crude protein, digestible lysine, digestible methionine, digestible threonine were analyzed values. Other values were calculated.