Table 1. Test diets for the 21 to 38 d period (% as is basis)1.
| Ingredients | Control | High Lys | High Lys + Thr |
|---|---|---|---|
| Corn | 65.70 | 66.09 | 66.13 |
| Soybean meal | 22.52 | 22.52 | 22.52 |
| Canola meal | 3.00 | 3.00 | 3.00 |
| Yellow grease | 4.35 | 4.35 | 4.35 |
| CaCO3 | 0.67 | 0.67 | 0.67 |
| Ca3(PO4)2 | 1.66 | 1.66 | 1.66 |
| NaCl | 0.16 | 0.16 | 0.16 |
| Choline Cl | 0.03 | 0.03 | 0.03 |
| Vitamins and minerals2 | 0.10 | 0.10 | 0.10 |
| L-Lysine-HCl | 0.12 | 0.75 | 0.75 |
| DL-Methionine | 0.25 | 0.25 | 0.25 |
| L-Threonine | 0.04 | 0.04 | 0.38 |
| L-Gultamic acid3 | 1.40 | 0.38 | — |
| Total | 100 | 100 | 100 |
| Nutrient analysis | |||
| ME, Mcal/kg | 3.2 | 3.2 | 3.2 |
| CP | 18.00 | 18.00 | 18.00 |
| Ca | 0.89 | 0.89 | 0.89 |
| Available P | 0.40 | 0.40 | 0.40 |
| Lysine | 1.00 | 1.50 | 1.50 |
| Threonine | 0.68 | 0.69 | 1.02 |
| Arginine | 1.12 | 1.12 | 1.12 |
1
High Lys is the amount of 1.5% lysine in test diet. High Lys + Thr is the amount of 1.5% Lys and 1.02% Threonine in test diet (Thr / Lys=0.68).
2
Premix provided the following per kilogram of diet: vitamin A (vitamin A acetate) 9,200 IU; cholecalciferol 4,200 IU; vitamin E (source unspecified) 15 IU; menadione, 2.9 mg; B12, 13 µg; choline, 38 mg; riboflavin, 6.7 mg; niacin, 50 mg; D-biotin, 0.13 mg; pyridoxine, 3.4 mg; manganese, 130 mg; zinc, 100 mg; iron, 40 mg; copper, 16 mg; iodine, 1.3 mg.
3
Corrected using glutamic acid to satisfy CP of caluculation in each test feed.