Table 1.
Feed formulation and proximate composition of test diets used in the experiment.1
| Item | Control | 0.15% nucleotides | 0.30% nucleotides | 0.60% nucleotides | 1.20% nucleotides |
|---|---|---|---|---|---|
| Ingredients, % DM | |||||
| White fishmeal | 14.00 | 14.00 | 14.00 | 14.00 | 14.00 |
| Fly maggot meal | 6.00 | 6.00 | 6.00 | 6.00 | 6.00 |
| Soybean meal | 30.00 | 30.00 | 30.00 | 30.00 | 30.00 |
| Wheat | 42.00 | 42.00 | 42.00 | 42.00 | 42.00 |
| Vitamin C | 0.10 | 0.10 | 0.10 | 0.10 | 0.10 |
| Vitamin premix2 | 0.10 | 0.10 | 0.10 | 0.10 | 0.10 |
| Mineral premix3 | 0.50 | 0.50 | 0.50 | 0.50 | 0.50 |
| Choline chloride | 0.20 | 0.20 | 0.20 | 0.20 | 0.20 |
| α- starch (%) | 2.85 | 2.85 | 2.85 | 2.85 | 2.85 |
| Zeolite powder | 4.25 | 4.10 | 3.95 | 3.65 | 3.05 |
| Yeast-originated NT | 0 | 0.15 | 0.30 | 0.60 | 1.20 |
| Chemical composition, % DM | |||||
| Dry matter | 92.1 | 92.1 | 92.1 | 92.1 | 92.1 |
| Crude protein | 31.2 | 31.2 | 31.2 | 31.2 | 31.2 |
| Crude lipid | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 |
| Ash | 6.5 | 6.4 | 6.2 | 5.9 | 5.3 |
| Gross energy, MJ/100 g | 1.72 | 1.72 | 1.72 | 1.72 | 1.72 |
Ingredient source: white fishmeal (Siberia, Russia), fly maggot meal (Shangdong, China), soybean meal (Jiangsu, China), wheat (Henan, China), vitamin C (Hebei, China), choline chloride (Hebei, China), a-starch (Jiangsu, China), zeolite powder (Hebei, China).
Contains (per kg premix): thiamin, 20 mg; riboflavin 20 mg; pyridoxine 20 mg; cyanocobalamine 0.020 mg; phylloquinone 10 mg; folic acid 5 mg; calcium patotheniate 50 mg; inositol 100 mg; niacin 100 mg; tocopherol 50 mg; biotin 0.1 mg; retinol 55,000 IU; cholecalciferol 10,000 IU; carrier up to 1 kg.
Contains (as g/kg premix): NaCl, 1 g; MgSO4·7H2O, 15 g; KH2PO4, 32 g; FeC6H5O7·5H2O, 0.25 g; C6H10CaO6·5H2O, 3.5 g; ZnSO4·7H2O, 0.353 g; MnSO4·4H2O, 0.162 g; CuSO4·5H2O, 0.031 g; CoCl2·6H2O, 0.001 g; KIO3, 0.003 g; carrier up to 1 kg.