Table 1.
Composition of the experimental diets for Exp. 1, as-fed basis1
| Phase 1 | Phase 2 | Phase 3 | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Low SBM2 | High SBM | Low SBM | High SBM | Common SBM | ||||||||
| Phytase, FTU3/kg | Phytase, FTU/kg | Phytase, FTU/kg | Phytase, FTU/kg | Phytase, FTU/kg | ||||||||
| Ingredient | 0 | 3,750 | 0 | 3,750 | 0 | 3,750 | 0 | 3,750 | 0 | 3,750 | ||
| Corn, 8.5% CP | 18.85 | 18.75 | 13.55 | 13.38 | 53.10 | 52.97 | 45.15 | 44.91 | 51.77 | 52.72 | ||
| Soybean meal, 47.5% CP | 15.50 | 15.50 | 25.03 | 24.97 | 19.00 | 19.00 | 29.00 | 28.96 | 32.50 | 32.45 | ||
| Corn DDGS4 | 5.00 | 5.00 | 5.00 | 4.99 | 6.00 | 6.00 | 6.00 | 5.99 | 10.00 | 9.99 | ||
| Oats, steamed | 20.00 | 20.00 | 20.00 | 19.97 | – | – | – | – | – | – | ||
| Choice white grease | 3.00 | 3.05 | 5.25 | 5.29 | 3.10 | 3.15 | 4.90 | 4.94 | 2.30 | 1.85 | ||
| Poultry meal, low ash | 8.00 | 7.95 | 0.60 | 0.60 | 8.00 | 8.00 | 4.10 | 4.09 | – | – | ||
| Whey permeate5 | 21.94 | 21.96 | 21.95 | 21.92 | 6.10 | 6.10 | 6.10 | 6.09 | – | – | ||
| Plasma protein6 | 4.25 | 4.25 | 4.25 | 4.24 | 1.25 | 1.25 | 1.25 | 1.25 | – | – | ||
| L-Lys HCL | 0.48 | 0.48 | 0.42 | 0.42 | 0.60 | 0.60 | 0.41 | 0.41 | 0.33 | 0.32 | ||
| DL-Met | 0.20 | 0.20 | 0.21 | 0.20 | 0.22 | 0.22 | 0.18 | 0.17 | 0.10 | 0.09 | ||
| L-Thr | 0.11 | 0.11 | 0.10 | 0.10 | 0.17 | 0.17 | 0.10 | 0.10 | 0.08 | 0.07 | ||
| L-Trp | 0.03 | 0.03 | – | – | 0.06 | 0.06 | 0.02 | 0.01 | – | – | ||
| L-Val | – | – | – | – | 0.09 | 0.09 | – | – | – | – | ||
| Limestone, ground | 0.70 | 0.70 | 1.04 | 1.04 | 0.75 | 0.75 | 0.90 | 0.89 | 1.05 | 0.98 | ||
| Monocalcium phosphate | 0.37 | 0.38 | 1.03 | 1.03 | 0.45 | 0.45 | 0.78 | 0.77 | 1.21 | 0.58 | ||
| Salt | 0.30 | 0.30 | 0.30 | 0.30 | 0.40 | 0.40 | 0.40 | 0.40 | 0.40 | 0.40 | ||
| Copper sulfate | 0.06 | 0.06 | 0.06 | 0.06 | 0.06 | 0.06 | 0.06 | 0.06 | 0.07 | 0.06 | ||
| Zinc oxide | 0.31 | 0.31 | 0.31 | 0.31 | 0.26 | 0.26 | 0.26 | 0.26 | – | – | ||
| Organic acid blend7 | 0.20 | 0.20 | 0.20 | 0.20 | – | – | – | – | – | – | ||
| Sweetener | 0.20 | 0.20 | 0.20 | 0.20 | 0.20 | 0.20 | 0.20 | 0.20 | – | – | ||
| Choline chloride, 60%, dry | 0.07 | 0.07 | 0.07 | 0.07 | 0.07 | 0.07 | 0.07 | 0.07 | 0.07 | 0.07 | ||
| Antibiotic8 | 0.30 | 0.30 | 0.30 | 0.30 | – | – | – | – | – | – | ||
| Vitamin–mineral premix9 | 0.15 | 0.15 | 0.15 | 0.15 | 0.15 | 0.15 | 0.15 | 0.15 | 0.15 | 0.15 | ||
| Phytase10 | – | 0.08 | – | 0.08 | – | 0.08 | – | 0.08 | – | 0.08 | ||
| Iron oxide, red11 | – | – | – | 0.20 | – | – | – | 0.20 | – | 0.20 | ||
| Calculated nutrient composition | ||||||||||||
| ME, Mcal/kg | 3.53 | 3.53 | 3.57 | 3.57 | 3.49 | 3.49 | 3.54 | 3.54 | 3.37 | 3.37 | ||
| CP, % | 22.74 | 22.71 | 22.39 | 22.37 | 21.71 | 21.71 | 23.23 | 23.22 | 22.82 | 22.9 | ||
| Total Lys, % | 1.58 | 1.57 | 1.54 | 1.54 | 1.56 | 1.56 | 1.55 | 1.55 | 1.41 | 1.41 | ||
| Ca, % | 0.80 | 0.80 | 0.80 | 0.80 | 0.80 | 0.80 | 0.80 | 0.80 | 0.77 | 0.64 | ||
| Available P, % | 0.45 | 0.45 | 0.45 | 0.45 | 0.37 | 0.37 | 0.37 | 0.37 | 0.38 | 0.25 | ||
| Phytate P, % | 0.16 | 0.16 | 0.19 | 0.19 | 0.20 | 0.20 | 0.23 | 0.23 | 0.24 | 0.24 | ||
| Analyzed nutrient composition | ||||||||||||
| CP, % | 23.36 | 23.4 | 22.83 | 22.95 | 22.16 | 22.06 | 23.79 | 23.80 | 22.80 | 22.90 | ||
The Phase 1 diet was fed at 1.8 kg/pig and the Phase 2 diet was fed at 5.5 kg/pig. Diets containing 1,250 and 2,500 FTU phytase/kg of were created on the farm by summit blending the appropriate portion of diets with 0 and 3,750 FTU/kg to reach the targeted phytase levels, using an automated feeding system.
SBM = soybean meal.
FTU = phytase units.
DDGS = distiller's dried grains with solubles.
Dairy Lac 80 (International Ingredient Corp., Monett, MO).
AP920 Animal Plasma (APC, Inc., Ankeny, IA).
Kem-Gest (Kemin Industries, Inc., Des Moines, IA).
Pulmotil 30 (Elanco Animal Health, Indianapolis, IN).
Supplied per kilogram of complete diet: 105 mg zinc as zinc sulfate, 100 mg iron as ferrous sulfate, 45 mg manganese as manganous oxide, 15 mg copper as copper sulfate, 0.7 mg iodine as ethylenediamine dihydroiodide, 0.3 mg selenium as sodium selenite, 9,923 IU vitamin A, 1,654 IU vitamin D3, 77.1 mg vitamin E, 3.9 mg vitamin K, 44.1 µg vitamin B12, 9.9 mg riboflavin, 33.1 mg D-pantothenic acid, 55.1 mg niacin, 3.3 mg thiamine, 5.5 mg pyridoxine, 992 µg folic acid, and 276 µg biotin.
Quantum Blue (minimum phytase activity of 5,000 FTU/g; AB Vista, Marlborough, UK).
Used to color code the dietary treatments.