Table 1.
Ingredients and nutrient levels of the basal diet (air-dry basis, %).
| Items | Groups2 (1–21 d) |
Groups2 (22–42 d) |
||||||
|---|---|---|---|---|---|---|---|---|
| CON | EPL | EPM | EPH | CON | EPL | EPM | EPH | |
| Ingredients | ||||||||
| EP | 0.00 | 0.30 | 0.60 | 0.90 | 0.00 | 0.30 | 0.60 | 0.90 |
| Corn | 56.60 | 56.20 | 55.90 | 55.45 | 63.70 | 63.30 | 63.00 | 62.60 |
| Soybean meal | 35.45 | 35.55 | 35.55 | 35.70 | 28.60 | 28.70 | 28.70 | 28.80 |
| Premix1 | 5.00 | 5.00 | 5.00 | 5.00 | 5.00 | 5.00 | 5.00 | 5.00 |
| Soybean oil | 2.95 | 2.95 | 2.95 | 2.95 | 2.70 | 2.70 | 2.70 | 2.70 |
| Total | 100.00 | 100.00 | 100.00 | 100.00 | 100.00 | 100.00 | 100.00 | 100.00 |
| Nutrients | ||||||||
| Metabolizable energy, MJ/kg | 12.46 | 12.47 | 12.48 | 12.48 | 12.61 | 12.62 | 12.63 | 12.63 |
| Crude protein | 21.52 | 21.71 | 21.12 | 21.22 | 19.10 | 19.07 | 19.24 | 19.01 |
| Crude fiber | 2.86 | 3.48 | 3.49 | 3.27 | 2.20 | 2.25 | 2.19 | 2.07 |
| Calcium | 0.92 | 0.92 | 0.92 | 0.92 | 0.86 | 0.86 | 0.86 | 0.86 |
| Total phosphorus | 0.52 | 0.52 | 0.52 | 0.52 | 0.47 | 0.47 | 0.47 | 0.47 |
| Met | 0.44 | 0.44 | 0.44 | 0.44 | 0.41 | 0.41 | 0.41 | 0.41 |
| Lys | 1.27 | 1.27 | 1.27 | 1.28 | 1.08 | 1.09 | 1.08 | 1.09 |
| Thr | 0.83 | 0.83 | 0.83 | 0.83 | 0.72 | 0.72 | 0.72 | 0.72 |
| Try | 0.27 | 0.27 | 0.27 | 0.27 | 0.23 | 0.23 | 0.23 | 0.23 |
EP = Echinacea purpurea polysaccharide; CON = control.
Premix provided per kg of diet (1–21 d): vitamin A, 6250 IU; vitamin D3, 2700 IU; vitamin E, 22.5 IU; vitamin K3, 2.2 mg; vitamin B1, 4.25 mg; vitamin B2, 6.25 mg; vitamin B6, 2.55 mg; vitamin B12, 1.38 mg; folic acid, 0.8 mg; calcium pantothenate, 32.5 mg; niacin, 27.5 mg; copper, 16.25 mg; iron, 265 mg; zinc, 111.25 mg; manganese, 87.5 mg; iodine, 2.5 mg; selenium, 0.33 mg; Met, 0.1%; Lys, 0.075%; calcium, 0.79%; phosphorus, 0.14%; salt, 0.28%; moisture, ≤0.5%. Premix provided per kg of diet (22-42 d): vitamin A, 6250 IU, vitamin D3, 2700 IU; vitamin E, 28 IU; vitamin K3, 2.2 mg; vitamin B1, 4.25 mg; vitamin B2, 5.5 mg; vitamin B6, 2.55 mg; vitamin B12, 1.25 mg; folic acid, 1.05 mg; calcium pantothenate, 32.5 mg; niacin, 27.5 mg; copper, 1 mg; iron, 262.5 mg; zinc, 75 mg; manganese, 132.5 mg; iodine, 2.55 mg; selenium, 0.325 mg; Met, 0.1%; Lys, 0.075%; calcium, 0.76%; phosphorus, 0.11%; Salt: 0.28%; Moisture, ≤0.5%.
CON, EPL, EPM, and EPH, represent EP addition levels of 0.0, 0.3%, 0.6%, and 0.9% in the diet, respectively (n = 6).