Table 1.
Composition and nutritional content of the experimental diets.
| Item | Starter (d 0 to 10) |
Grower (d 11 to 24) |
Finisher (d 25 to 35) |
|||
|---|---|---|---|---|---|---|
| SCP | RCP | SCP | RCP | SCP | RCP | |
| Ingredients (DM basis), % | ||||||
| Wheat | 53.2 | 58.0 | 42.6 | 52.2 | 41.6 | 48.8 |
| Soybean meal | 25.6 | 21.0 | 26.4 | 25.0 | 22.2 | 15.1 |
| Sorghum | 15.0 | 15.0 | 25.0 | 16.9 | 30.0 | 30.0 |
| Canola oil | 1.37 | 0.94 | 2.51 | 1.19 | 2.90 | 2.02 |
| Limestone (fine) | 1.18 | 1.19 | 1.08 | 1.13 | 1.02 | 1.04 |
| Dical Phos 18P/21Ca | 0.89 | 0.97 | 0.70 | 0.75 | 0.58 | 0.62 |
| Sodium bicarbonate | 0.32 | 0.45 | 0.02 | 0.41 | 0.15 | 0.44 |
| Titanium dioxide | ˉ | ˉ | 0.50 | 0.50 | 0.50 | 0.50 |
| L-lysine HCl 78.4 | 0.54 | 0.68 | 0.27 | 0.54 | 0.29 | 0.46 |
| DL-methionine | 0.39 | 0.42 | 0.27 | 0.33 | 0.23 | 0.27 |
| L-Arginine | 0.53 | 0.33 | ˉ | 0.22 | ˉ | 0.16 |
| L-threonine | 0.35 | 0.27 | 0.08 | 0.20 | 0.13 | 0.16 |
| L-Valine | 0.16 | 0.24 | ˉ | 0.16 | ˉ | 0.10 |
| L-Isoleucine | 0.12 | 0.20 | ˉ | 0.14 | ˉ | 0.05 |
| NaCl | 0.110 | 0.040 | 0.273 | 0.003 | 0.138 | 0.007 |
| Trace mineral premix1 | 0.110 | 0.110 | 0.110 | 0.110 | 0.110 | 0.110 |
| Vitamin premix2 | 0.085 | 0.085 | 0.085 | 0.085 | 0.085 | 0.085 |
| Choline Cl 70% | 0.048 | 0.080 | 0.053 | 0.080 | 0.069 | 0.090 |
| Phytase | 0.010 | 0.010 | 0.010 | 0.010 | 0.010 | 0.010 |
| Xylanase | 0.005 | 0.005 | 0.005 | 0.005 | 0.005 | 0.005 |
| Nutrients, % | ||||||
| AMEn, kcal/kg | 3,005 | 3,009 | 3,075 | 3,075 | 3,147 | 3,150 |
| Crude protein (calculated) | 21.6 | 19.7 | 19.7 | 17.7 | 18.6 | 16.7 |
| Crude protein (analyzed) | 21.2 | 19.5 | 19.3 | 17.0 | 18.4 | 16.1 |
| Crude fat | 3.48 | 3.08 | 4.67 | 3.41 | 5.11 | 4.26 |
| Crude fiber | 2.49 | 2.42 | 2.51 | 2.37 | 2.45 | 2.34 |
| Dig. Arg | 1.62 | 1.31 | 1.12 | 1.12 | 1.03 | 1.02 |
| Dig. Lys | 1.28 | 1.28 | 1.08 | 1.08 | 0.995 | 0.97 |
| Dig. Met | 0.65 | 0.66 | 0.54 | 0.55 | 0.48 | 0.49 |
| Dig. Ile | 0.87 | 0.87 | 0.77 | 0.75 | 0.70 | 0.64 |
| Dig. Val | 1.01 | 1.01 | 0.88 | 0.86 | 0.81 | 0.78 |
| Calcium | 0.90 | 0.91 | 0.82 | 0.83 | 0.76 | 0.76 |
| Av. P | 0.45 | 0.46 | 0.41 | 0.41 | 0.38 | 0.38 |
| Choline, mg/kg | 1,700 | 1,801 | 1,700 | 1,700 | 1,700 | 1,700 |
| Linoleic 18:2 | 1.26 | 1.16 | 1.60 | 1.27 | 1.72 | 1.50 |
Abbreviations: CP, crude protein; RCP, reduced protein; SCP, standard protein.
Vitamin premix supplied the following per kilogram of diet: retinol, 12,000 IU; cholecalciferol, 5,000 IU; tocopheryl acetate, 75 mg, menadione, 3 mg; thiamine, 3 mg; riboflavin, 8 mg; niacin, 55 mg; pantothenate, 13 mg; pyridoxine, 5 mg; folate, 2 mg; cyanocobalamin, 16 mg; biotin, 200 mg; cereal-based carrier, 149 mg; mineral oil, 2.5 mg.
Trace mineral premix supplied the following per kilogram of diet: Cu (sulphate), 16 mg; Fe (sulphate), 40 mg; I (iodide), 1.25 mg; Se (selenate), 0.3 mg; Mn (sulphate and oxide), 120 mg; Zn (sulphate and oxide), 100 mg; cereal-based carrier, 128 mg; mineral oil, 3.75 mg.