Table 1.
Composition and nutrient levels of basal diets (%, as-fed basis).1
| Items | Period 1 (d 1–21) | Period 2 (d 22–42) |
|---|---|---|
| Corn | 58.17 | 64.26 |
| Soybean meal | 30.44 | 24.05 |
| Corn gluten meal | 2.00 | 2.50 |
| Fish meal | 2.00 | 2.00 |
| Soybean oil | 3.38 | 3.60 |
| Dicalcium phosphate | 1.50 | 1.04 |
| Limestone | 1.30 | 1.35 |
| Salt | 0.30 | 0.30 |
| L-Lys, 98% | 0.01 | 0.08 |
| Methionine 98% | 0.14 | 0.04 |
| Threonine,98% | 0.01 | 0.03 |
| Chromic oxide | 0.25 | 0.50 |
| Premix2 | 0.50 | 0.25 |
| Total | 100 | 100 |
| Analyzed values | ||
| Dry matter | 88.52 | 90.81 |
| Crude protein | 21.19 | 19.12 |
| Calcium | 0.96 | 0.85 |
| Available phosphorus | 0.64 | 0.58 |
| Calculated value3 | ||
| Metabolizable energy, MJ/kg | 12.76 | 13.18 |
| Total phosphorus | 0.70 | 0.59 |
| Digestible lysine | 0.86 | 0.73 |
| Digestible methionine | 0.30 | 0.28 |
| Digestible cysteine | 0.27 | 0.25 |
| Digestible threonine | 0.63 | 0.56 |
| Digestible methionine and cysteine | 0.57 | 0.53 |
1
NCE (natural capsicum extract, 80 mg/kg) and CTC (chlortetracycline, 75 mg/kg) were mixed with premix and then mixed with each basal diet.
2
Premix supplied per kg diet: zinc, 60 mg; iron, 100 mg; manganese, 80 mg; copper, 10 mg; iodine, 0.35 mg; selenium, 0.3 mg; vitamin A, 10,000 IU; vitamin D3, 2,850 IU; vitamin E, 30 IU; vitamin K3, 2 mg; vitamin B12, 1.2 mg; riboflavin, 6 mg; nicotinic acid, 40 mg; pantothenic acid, 12 mg; pyridoxine, 3 mg; biotin, 0.2 mg; and choline chloride, 800 mg.
3
These values were calculated from data provided by NRC (1994).