Table 1.
Composition of the experimental* and lactation (LACT) diets (as-fed)
| Item | CTL | RES | OVER | LACT |
|---|---|---|---|---|
| Ingredient, g/kg | ||||
| Corn | 486.2 | 38.8 | 584.0 | 579.1 |
| Wheat, soft | 100.0 | 119.9 | 100.0 | - |
| Wheat middlings | 180.0 | 250.0 | 22.3 | 100.0 |
| Soybean meal (48% CP) | 103.5 | 13.0 | 212.3 | 254.1 |
| Oat hulls | 100.1 | 545.4 | - | - |
| Animal fat | - | - | 50.0 | 23.1 |
| Ground limestone | 14.9 | 14.0 | 14.1 | 15.6 |
| Dicalcium phosphate (21%) | 5.6 | 6.5 | 6.9 | 14.7 |
| NaCl | 6.3 | 6.1 | 6.3 | 5.0 |
| Lys. HCl | - | 1.3 | - | 2.3 |
| Met | - | 0.4 | 0.3 | 0.9 |
| L-Thr | - | 0.6 | 0.4 | 0.9 |
| L-Tryptophan | - | 0.1 | - | - |
| L-Valine | - | 0.5 | - | 0.7 |
| Choline (51.7%) | 0.72 | 0.72 | 0.72 | 1.15 |
| Trace mineral and vitamin premix† | 2.5 | 2.5 | 2.5 | 2.5 |
| Phytase‡ | 0.15 | 0.15 | 0.15 | - |
| Calculated composition | ||||
| DE, kcal/kg | 3,115 | 2,286 | 3,624 | 3,432 |
| NE, kcal/kg | 2,232 | 1,559 | 2,566 | 2,525 |
| CP, % | 13.10 | 9.22 | 15.72 | 18.37 |
| Fat, % | 2.59 | 2.00 | 7.22 | 4.95 |
| Crude fiber, % | 6.05 | 20.41 | 1.95 | 2.29 |
| Total Lys, % | 0.60 | 0.46 | 0.80 | 1.13 |
| Ca, % | 0.75 | 0.75 | 0.75 | 0.95 |
| P, % | 0.57 | 0.54 | 0.50 | 0.75 |
| Met, % | 0.21 | 0.17 | 0.27 | 0.37 |
| Met + Cys, % | 0.46 | 0.35 | 0.54 | 0.67 |
| Analyzed composition | ||||
| CP, % | 12.87 | 9.95 | 16.63 | 18.73 |
| Ca, % | 0.76 | 0.71 | 0.77 | 0.96 |
| P, % | 0.60 | 0.59 | 0.55 | 0.72 |
| Na, % | 0.25 | 0.23 | 0.27 | 0.21 |
| Mg, % | 0.20 | 0.20 | 0.18 | 0.20 |
*Control (CTL), restriction (RES), and overallowance (OVER) diets fed from day 28 of gestation. The RES diet provided 70% and the OVER diet 115% of the CTL diet in the CP and NE contents. The RES diet was fed from days 28 until 74 of gestation followed by the OVER diet for the remainder of gestation.
†Provided the following per kilogram of diet: Cu (copper sulfate), 15 mg; Zn (zinc sulfate), 125 mg; Se (sodium selenite), 0.3 mg; Mn (manganous sulfate), 40 mg; Fe (ferrous sulfate), 100 mg; I (ethylene diamine dihydroiodine), 0.5 mg; vitamin A, 10,000 IU; vitamin D, 1,400 IU; vitamin E, 60 IU; vitamin K, 3 mg; vitamin B12, 20 µg; thiamin, 1.5 mg; riboflavin, 6 mg; panthotenic acid, 25 mg; niacin, 30 mg; folate, 8 mg; biotin, 0.5 mg; and pyridoxin, 3 mg.
‡Phyzyme XP (Danisco Animal Nutrition, Marlborough, UK).