Table 1.
Formulation and chemical composition of the basal diet (on an 88.53% dry matter basis).
| Item | Diets 1 | |
|---|---|---|
| CON/MPN | NA | |
| Ingredient, % | ||
| Corn | 34.00 | 34.00 |
| Expanded corn | 18.00 | 18.00 |
| Soybean meal | 9.50 | 9.50 |
| Expanded soybean | 15.00 | 15.00 |
| Lactose | 2.00 | 2.00 |
| Whey powder | 8.00 | 8.00 |
| Fish meal | 5.00 | 5.00 |
| Soybean oil | 2.00 | 2.00 |
| Soybean hull | 0.31 | 0.31 |
| Limestone | 0.60 | 0.598 |
| Lysine 98.5% | 0.80 | 0.80 |
| Methionine | 0.30 | 0.30 |
| L-Threonine | 0.30 | 0.30 |
| Valine | 0.13 | 0.13 |
| L-Tryptophan | 0.10 | 0.10 |
| Monocalcium phosphate | 1.50 | 1.50 |
| Salt | 0.25 | 0.25 |
| 60% choline chloride | 0.15 | 0.15 |
| Acidifier | 0.05 | 0.05 |
| Phytase | 0.01 | 0.01 |
| Niacin | 0 | 0.002 |
| Premix 2 | 2.00 | 2.00 |
| Total | 100.00 | 100.00 |
| Estimated energy and nutrient composition- | ||
| GE, kcal/kg | 3526.00 | 3526.00 |
| ME, kcal/kg | 3395.01 | 3395.01 |
| NE, kcal/kg | 2610.93 | 2610.93 |
| Crude protein, % | 19.00 | 19.00 |
| Crude fat, % | 8.00 | 8.00 |
| SID 3 lys, % | 1.49 | 1.49 |
| SID thr, % | 0.86 | 0.86 |
| SID try, % | 0.27 | 0.27 |
| SID met + cys, % | 0.83 | 0.83 |
| Calcium, % | 0.88 | 0.88 |
| Total phosphorus, % | 0.68 | 0.68 |
| STTD 4 phosphorus, % | 0.47 | 0.47 |
| Analyzed energy and nutrient composition | ||
| GE, kcal/kg | 3524.72 | 3524.72 |
| Crude protein, % | 19.30 | 19.30 |
| Crude fat, % | 8.74 | 8.74 |
| Crude fiber, % | 3.39 | 3.39 |
| Crude ash, % | 1.48 | 1.48 |
| The content of niacin in diets, mg/kg | 9.92 | 30.32 |
1 CON = Control group; NA = niacin group; MPN = GPR109A antagonist group. Piglets in the MPN group were administered orally with 10 mg/kg/day niacin receptor antagonist every day in the morning, and piglets in CON and NA groups received the same amount of water. 2 Provided vitamin and mineral premix per kg diet: vitamin A, 2400 IU; vitamin D3, 2800 IU; vitamin E, 200 IU; vitamin K3, 5 mg; vitamin B12, 40 μg; vitamin B1, 3 mg; vitamin B2, 10 mg; pantothenic acid, 15 mg; folic acid, 1 mg; vitamin B6, 8 mg; biotin, 0.08 mg; Fe (FeSO4·H2O), 120 mg; Cu (CuSO4·5H2O), 16 mg; Mn (MnSO4·H2O), 70 mg; Zn (ZnSO4·H2O), 120 mg; I (CaI2O6), 0.7 mg; and Se (Na2SeO3), 0.48 mg. 3 SID, Standardized ileal digestibility. 4 STTD, Standardized total tract digestible.