Table 1.
Ingredient of the experimental diets (air-dry basis, %).
| Item | Group A | Group B | Group C | Group D |
|---|---|---|---|---|
| Extruded corn | 53.34 | 48.36 | 43.74 | 39.46 |
| Yellow croaker | 12.02 | 16.49 | 20.49 | 24.16 |
| Poultry offal | 5.00 | 5.00 | 5.00 | 5.00 |
| Heated eggs | 7.00 | 7.00 | 7.00 | 7.00 |
| Lard | 16.15 | 16.65 | 17.27 | 17.88 |
| OX liver | 5.00 | 5.00 | 5.00 | 5.00 |
| Salt | 0.50 | 0.50 | 0.50 | 0.50 |
| Premix1 | 1.00 | 1.00 | 1.00 | 1.00 |
| Total | 100.00 | 100.00 | 100.00 | 100.00 |
Groups A to D denoted dietary protein levels, 32, 36, 40 and 44%, respectively.
1
Premix provided per kilogram diet: Vitamin A 1,000,000 IU; Vitamin D 3,200,000 IU; Vitamin E 6,000 IU; Vitamin B1 600 mg; Vitamin B2 800 mg; Vitamin B6 300 mg; Vitamin B12 10 mg; Vitamin K3,100 mg; Vitamin C 40,000 mg; Nicotinic acid 4,000 mg; Pantothenic acid 1,200 mg; Alkaloid 20 mg; Folic acid 80 mg; Choline 30,000 mg; Fe 8,200 mg; Cu 800 mg; Mn 1,200 mg; Zn 5,200 mg; I 50 mg; Se 20 mg; Co 50 mg.