Table 1.
Ingredient composition and nutrient content of experimental diets (% as-fed basis)
| Items | Level of montmorillonite (%)
|
||||
|---|---|---|---|---|---|
| 0.0 | 0.5 | 1.0 | 2.5 | 5.0 | |
| Ingredient (%) | |||||
| Corn | 52.00 | 52.00 | 52.00 | 52.00 | 52.00 |
| Soybean meal | 21.00 | 21.00 | 21.00 | 21.00 | 21.00 |
| Fish meal | 5.00 | 5.00 | 5.00 | 5.00 | 5.00 |
| Soybean protein concentrate | 5.00 | 5.00 | 5.00 | 5.00 | 5.00 |
| Whey | 6.00 | 6.00 | 6.00 | 6.00 | 6.00 |
| Wheat bran | 5.00 | 4.50 | 4.00 | 2.50 | 0.00 |
| Soybean oil | 3.00 | 3.00 | 3.00 | 3.00 | 3.00 |
| Dicalcium phosphate | 0.90 | 0.90 | 0.90 | 0.90 | 0.90 |
| Limestone | 0.60 | 0.60 | 0.60 | 0.60 | 0.60 |
| DL-methionine (98%) | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 |
| L-lysine·HCl (98%) | 0.15 | 0.15 | 0.15 | 0.15 | 0.15 |
| Sodium chloride | 0.10 | 0.10 | 0.10 | 0.10 | 0.10 |
| Vitamin-mineral premix1 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
| Montmorillonite | 0.00 | 0.50 | 1.00 | 2.50 | 5.00 |
| Nutrient content (%)2 | |||||
| Metabolizable energy (MJ/kg) | 13.51 | 13.46 | 13.42 | 13.29 | 13.46 |
| Crude protein | 21.03 | 20.92 | 20.65 | 20.44 | 20.27 |
| Calcium | 0.84 | 0.79 | 0.80 | 0.87 | 0.90 |
| Total phosphorus | 0.69 | 0.70 | 0.72 | 0.71 | 0.75 |
| Methionine | 0.59 | 0.57 | 0.54 | 0.55 | 0.53 |
| Lysine | 1.30 | 1.28 | 1.25 | 1.27 | 1.25 |
1
Provided per kilogram diet: vitamin A, 9,000 IU; vitamin D3, 3,000 IU; vitamin E, 20 IU; vitamin K3, 3.0 mg; thiamine, 1.5 mg; riboflavin, 4.0 mg; pyridoxine, 3.0 mg; cobalamin, 0.2 mg; biotin, 0.1 mg; pantothenic acid, 30 mg; nicotinic acid, 15 mg; iron, 75 mg; copper, 150 mg; zinc, 75 mg; manganese, 60 mg; iodine, 0.35 mg; selenium, 0.3 mg.
2
All nutrient levels except metabolizable energy were analyzed and values are the means of two determinations.