Table 1.
Composition of the basal diets (as-fed basis) used in the experiments 1 (1–14 D), 2 (14–28 D), 3 (28–42 D), and 4 (8–21 D).
| Item | Experiment 1 (1–14 D) | Experiment 2 (14–28 D) | Experiment 3 (28–42 D) | Experiment 4 (8–21 D) |
|---|---|---|---|---|
| Ingredient, % | ||||
| Corn | 66.08 | 66.62 | 72.26 | 68.33 |
| Soybean meal 45% | 10.47 | 9.20 | 7.04 | 16.53 |
| Wheat bran | 5.00 | 6.05 | 4.00 | 3.91 |
| Meat and bone meal | 6.83 | 5.73 | 5.02 | 4.99 |
| Soybean oil | 1.80 | 3.00 | 3.00 | 1.00 |
| Limestone | 0.12 | 0.26 | 0.29 | 0.23 |
| NaCl | 0.43 | 0.41 | 0.40 | 0.42 |
| Potassium chloride | 0.21 | 0.23 | 0.22 | 0.02 |
| Suppl, Min–Vit1 | 0.40 | 0.40 | 0.40 | 0.40 |
| Filler (kaolin)2 | 1.60 | 1.60 | 1.60 | 1.70 |
| L-Glu 99.4% | 3.50 | 3.50 | 3.50 | 0.51 |
| DL-Met 99% | 0.53 | 0.47 | 0.43 | 0.42 |
| L-Lys HCl 78.5% | 0.93 | 0.84 | 0.82 | 0.66 |
| L-Thr 98% | 0.39 | 0.34 | 0.32 | 0.26 |
| L-Val 98% | 0.28 | 0.17 | 0.06 | --- |
| L-Ile 98% | 0.25 | 0.19 | 0.05 | --- |
| L-Arg 99% | 0.55 | 0.49 | 0.49 | 0.32 |
| L-Trp 98% | 0.11 | 0.10 | 0.10 | 0.06 |
| Gly 97% | 0.52 | 0.40 | 0.00 | 0.24 |
| Calculated composition3 | ||||
| CP, % | 19.2 (19.0) | 17.8 (17.4) | 16.0 (16.2) | 18.0 (17.7) |
| ME, kcal/kg | 2,975 | 3,050 | 3,125 | 3,000 |
| Calcium, % | 0.87 | 0.78 | 0.69 | 0.82 |
| Chloride, % | 0.34 | 0.32 | 0.32 | 0.33 |
| Available phosphorus, % | 0.43 | 0.37 | 0.32 | 0.39 |
| Potassium, % | 0.59 | 0.58 | 0.58 | 0.59 |
| Sodium, % | 0.22 | 0.21 | 0.20 | 0.21 |
| SID Gly + Ser, % | 1.83 | 1.59 | 1.18 | 1.73 |
| SID Arg, % | 1.34 | 1.22 | 1.13 | 1.27 |
| SID Lys, % | 1.24 | 1.13 | 1.04 | 1.17 |
| SID Met + Cys, % | 0.90 | 0.82 | 0.76 | 0.85 |
| SID Thr, % | 0.81 | 0.73 | 0.68 | 0.76 |
| SID Trp, % | 0.21 | 0.20 | 0.19 | 0.20 |
| SID Leu, % | 1.10 | 1.00 | 0.98 | 1.28 |
| SID Val, % | 0.81 | 0.67 | 0.52 | 0.65 |
| SID Ile, % | 0.68 | 0.59 | 0.41 | 0.54 |
| Lys | 1.32 (1.27) | 1.21 (1.18) | 1.12 (1.09) | 1.27 (1.26) |
| Met + Cys | 0.96 (0.99) | 0.88 (0.90) | 0.82 (0.83) | 0.92 (0.92) |
| Leu | 1.18 (1.12) | 1.09 (1.09) | 1.06 (1.10) | 1.39 (1.43) |
| Val | 0.88 (0.87) | 0.74 (0.72) | 0.59 (0.52) | 0.73 (0.79) |
| Ile | 0.74 (0.69) | 0.65 (0.64) | 0.47 (0.51) | 0.61(0.58) |
| Arg | 1.41 (1.47) | 1.29 (1.36) | 1.19 (1.22) | 1.35 (1.40) |
Abbreviation: SID, standardized ileal digestible.
The vitamin and mineral premix contained per kilogram of diet: vitamin A (retinyl acetate), 2,654 μg; vitamin D3 (cholecalciferol), 125 μg; vitamin E (dl-α-tocopheryl acetate), 9.9 mg; vitamin K3 (menadione dimethyl pyrimidinol), 1.7 mg; vitamin B1 (thiamin mononitrate), 1.6 mg; vitamin B12 (cyanocobalamin), 16.7 μg; riboflavin, 5.3 mg; niacin (niacinamide), 36 mg; calcium pantothenate, 13 mg; folic acid, 0.8 mg; d-biotin, 0.1 mg; choline chloride, 270; BHT, 5.8; Fe (iron sulfate monohydrate), 50 mg; Cu (copper sulfate pentahydrate), 12 mg; I (calcium iodate), 0.9 mg; Zn (zinc oxide), 50 mg; Mn (manganous oxide), 60 mg; Se (sodium selenite), 0.2 mg; Co (cobalt sulfate), 0.2 mg.
Supplemental L-Leu, L-Val and L-Ile were added to the test diets at the expense of the inert filler (kaolin) to derive dietary treatments.
Analyzed values for total amino acids are in parentheses.