Table 1.
Ingredient composition and nutrient content of the diets.
| Item % | From 1–13 d of Age | From 14 to 35 d of Age | ||
|---|---|---|---|---|
| Positive Control | Negative Control | Extract of Humic Substances | ||
| Ground corn | 50.2 | 63.8 | 63.8 | 63.5 |
| Soybean meal | 40.9 | 29.7 | 29.7 | 29.7 |
| Vegetable oil | 4.22 | 2.33 | 2.36 | 2.41 |
| Calcium orthophosphate | 1.70 | 1.23 | 1.23 | 1.23 |
| Calcium carbonate | 1.49 | 1.45 | 1.45 | 1.45 |
| Vitamins and minerals 1 | 0.70 | 0.70 | 0.70 | 0.70 |
| Sodium bicarbonate | 0.25 | 0.20 | 0.20 | 0.20 |
| Salt | 0.28 | 0.45 | 0.45 | 0.45 |
| DL-Methionine | 0.15 | 0.10 | 0.10 | 0.10 |
| L-Lysine·HCl 2 | 0.12 | 0.09 | 0.09 | 0.09 |
| L-Threonine | 0.02 | 0.00 | 0.00 | 0.00 |
| Antibiotic | 0.05 | 0.05 | 0.00 | 0.00 |
| Coccidiostat | 0.05 | 0.05 | 0.00 | 0.00 |
| Extract of humic substances | 0.00 | 0.00 | 0.00 | 0.25 |
| Calculated nutrient content | ||||
| Metabolizable energy, kcal/kg | 3000 | 3100 | 3100 | 3100 |
| Digestible Lys % | 1.19 | 1.00 | 1.00 | 1.00 |
| Digestible Met % | 0.46 | 0.38 | 0.38 | 0.38 |
| Digestible Thr % | 0.79 | 0.65 | 0.65 | 0.65 |
| Ca % | 1.00 | 0.90 | 0.90 | 0.90 |
| Available P % | 0.50 | 0.45 | 0.45 | 0.45 |
1 Each kg provided: 6500 IU Vit A; 2000 IU Vit D3; 15 IU Vit E; 1.5 mg Vit K; 1.5 mg thiamine; 5 mg riboflavin; 35 mg niacin; 3.5 mg pyridoxine; 10 mg pantothenic acid; 1500 mg choline; 0.6 mg folic acid; 0.15 mg biotin; 0.15 mg Vit B12; 100.0 mg Mn; 100 mg Zn; 50 mg Fe; 10 mg Cu; 1.0 mg I. 2 Synthetic lysine hydrochloride.