TABLE 1.
Composition of the experimental diets
| Ingredient | Amt (g kg−1) in experimental dieta:
|
|||
|---|---|---|---|---|
| A− | A+ | S− | S+ | |
| Wheat | 501.3 | 501.3 | 501.3 | 501.3 |
| Soybean meal, toasted | 275.9 | 275.9 | 275.9 | 275.9 |
| Peas | 40.0 | 40.0 | 40.0 | 40.0 |
| Fishmeal | 40.0 | 40.0 | 40.0 | 40.0 |
| Lard | 60.0 | 60.0 | ||
| Tallow | 40.0 | 40.0 | ||
| Soy oil | 100.0 | 100.0 | ||
| Sodium chloride | 2.0 | 2.0 | 2.0 | 2.0 |
| Dicalcium phosphate | 19.5 | 19.5 | 19.5 | 19.5 |
| Calcium carbonate | 7.0 | 4.7 | 7.0 | 4.7 |
| Sodium bicarbonate | 1.5 | 1.5 | 1.5 | 1.5 |
| dl-Methionine (40%) | 5.0 | 5.0 | 5.0 | 5.0 |
| Vitamin and mineral mixb | 3.5 | 3.5 | 3.5 | 3.5 |
| Choline chloride (50%) | 0.4 | 0.4 | 0.4 | 0.4 |
| Chromoxid | 4.0 | 4.0 | 4.0 | 4.0 |
| Antibiotic premix in CaCO3c | 2.3 | 2.3 | ||
| Analyzed compositiond | ||||
| Dry matter (g/kg of feed) | 904.5 | 908.4 | 910.5 | 907.8 |
| Stoldt fat | 145.9 | 140.9 | 140.0 | 145.6 |
| Crude protein | 247.8 | 245.9 | 256.3 | 245.6 |
| Starch | 338.7 | 352.2 | 333.9 | 345.9 |
| Sugar | 61.6 | 62.8 | 61.3 | 59.7 |
| Fibre | 37.1 | 33.4 | 33.2 | 32.5 |
| Ash | 68.2 | 67.5 | 69.8 | 70.4 |
| Gross energy (MJ kg−1) | 20.8 | 20.7 | 20.9 | 20.6 |
The A diet consisted of 10% of a mixture of lard and tallow (1.5:1); the S diet consisted of 10% soy oil; − and + indicate a nonsupplemented diet and a diet supplemented with a combination of avilamycin and salinomycin, respectively.
Supplying (per kilogram of diet) retinol (retinyl acetate), 16,800 IU; cholecalciferol, 3,500 IU; vitamin E (dl-α-tocopheryl acetate), 42 IU; menadione, 3.5 mg; thiamine, 1.4 mg; riboflavin, 11.2 mg; pyridoxine, 4.2 mg; d-pantothenic acid, 14 mg; niacin, 56 mg; betaine anhydrate, 473 mg; folic acid, 2.1 mg; biotin, 140 μg; cyanocobalamin, 28 μg; BHT, 140 mg; FeSO4·7H2O, 112 mg; ZnO, 112 mg; MnO, 140 mg; CuSO4·5H2O, 21 mg; KI, 840 μg; Na2SeO3, 420 μg.
Supplying (per kilogram of diet) avilamycin, 10 mg; salinomycin, 40 mg.
Compositions are given in grams per kilogram of dry matter unless otherwise stated.