Table 2.
Ingredient composition and analyzed composition of experimental diets containing 0.16% and 0.33% standardized total tract digestible (STTD) P, as-fed basisa
| Ingredient, % | 0.16% STTD P | 0.33% STTD P | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Total P, %: | 0.35 | 0.35 | 0.35 | 0.35 | 0.35 | 0.53 | 0.53 | 0.53 | 0.53 | 0.53 |
| Total Ca, %: | 0.21 | 0.45 | 0.70 | 0.95 | 1.19 | 0.21 | 0.45 | 0.70 | 0.95 | 1.19 |
| STTD Ca, %: | 0.14 | 0.29 | 0.44 | 0.59 | 0.74 | 0.14 | 0.29 | 0.44 | 0.59 | 0.74 |
| Corn | 46.00 | 46.00 | 46.00 | 46.00 | 46.00 | 46.00 | 46.00 | 46.00 | 46.00 | 46.00 |
| Soybean meal | 32.50 | 32.50 | 32.50 | 32.50 | 32.50 | 32.50 | 32.50 | 32.50 | 32.50 | 32.50 |
| Cornstarch | 8.85 | 7.05 | 5.11 | 3.26 | 1.43 | 8.39 | 6.59 | 4.71 | 2.81 | 0.97 |
| Lactose | 10.00 | 10.00 | 10.00 | 10.00 | 10.00 | 10.00 | 10.00 | 10.00 | 10.00 | 10.00 |
| Choice white grease | – | 1.17 | 2.45 | 3.65 | 4.85 | 0.30 | 1.47 | 2.70 | 3.95 | 5.15 |
| Calcium carbonate | 0.16 | 0.79 | 1.45 | 2.10 | 2.73 | 0.16 | 0.79 | 1.44 | 2.10 | 2.73 |
| Monocalcium phosphate | 0.10 | 0.10 | 0.10 | 0.10 | 0.10 | 0.10 | 0.10 | 0.10 | 0.10 | 0.10 |
| Monosodium phosphate | – | – | – | – | – | 0.75 | 0.75 | 0.75 | 0.74 | 0.75 |
| Sodium bicarbonate | 1.15 | 1.15 | 1.15 | 1.15 | 1.15 | 0.56 | 0.56 | 0.56 | 0.56 | 0.56 |
| L-Lys HCl | 0.37 | 0.37 | 0.37 | 0.37 | 0.37 | 0.37 | 0.37 | 0.37 | 0.37 | 0.37 |
| DL-Met | 0.14 | 0.14 | 0.14 | 0.14 | 0.14 | 0.14 | 0.14 | 0.14 | 0.14 | 0.14 |
| Thr | 0.12 | 0.12 | 0.12 | 0.12 | 0.12 | 0.12 | 0.12 | 0.12 | 0.12 | 0.12 |
| Val | 0.01 | 0.01 | 0.01 | 0.01 | 0.01 | 0.01 | 0.01 | 0.01 | 0.01 | 0.01 |
| Sodium chloride | 0.40 | 0.40 | 0.40 | 0.40 | 0.40 | 0.40 | 0.40 | 0.40 | 0.40 | 0.40 |
| Vitamin mineral premixb | 0.20 | 0.20 | 0.20 | 0.20 | 0.20 | 0.20 | 0.20 | 0.20 | 0.20 | 0.20 |
| Total | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Analyzed composition | ||||||||||
| GE, kcal/kg | 3910 | 3846 | 3842 | 3966 | 3984 | 3846 | 3869 | 3926 | 3954 | 3991 |
| DM, % | 87.04 | 87.48 | 87.70 | 87.88 | 88.04 | 87.92 | 88.08 | 88.06 | 87.24 | 87.63 |
| CP, % | 18.80 | 19.00 | 19.23 | 18.93 | 19.50 | 19.42 | 19.15 | 18.47 | 19.17 | 18.86 |
| Ash, % | 3.95 | 5.03 | 5.22 | 6.84 | 6.73 | 4.20 | 4.64 | 5.55 | 6.57 | 6.75 |
| AEEc, % | 2.67 | 3.33 | 5.18 | 5.94 | 7.46 | 3.03 | 3.60 | 5.27 | 6.31 | 7.56 |
| ADF, % | 3.67 | 4.22 | 2.84 | 4.87 | 3.43 | 3.25 | 3.40 | 3.21 | 3.23 | 3.59 |
| NDF, % | 6.80 | 7.26 | 6.52 | 7.73 | 7.00 | 6.12 | 6.20 | 6.41 | 6.59 | 6.40 |
| Ca, % | 0.26 | 0.46 | 0.74 | 0.93 | 1.27 | 0.21 | 0.46 | 0.72 | 1.02 | 1.24 |
| P, % | 0.36 | 0.36 | 0.36 | 0.37 | 0.37 | 0.54 | 0.60 | 0.58 | 0.56 | 0.59 |
| Phytated, % | 0.49 | 0.49 | 0.49 | 0.49 | 0.49 | 0.49 | 0.49 | 0.49 | 0.49 | 0.49 |
| Phytate-bound Pe, % | 0.14 | 0.14 | 0.14 | 0.14 | 0.14 | 0.14 | 0.14 | 0.14 | 0.14 | 0.14 |
| Non-phytate Pf, % | 0.22 | 0.22 | 0.22 | 0.23 | 0.23 | 0.40 | 0.46 | 0.44 | 0.42 | 0.45 |
| Na, % | 0.46 | 0.47 | 0.47 | 0.49 | 0.47 | 0.42 | 0.50 | 0.47 | 0.46 | 0.47 |
| Cl, % | 0.28 | 0.33 | 0.32 | 0.32 | 0.34 | 0.33 | 0.31 | 0.32 | 0.33 | 0.33 |
| K, % | 0.92 | 0.91 | 0.89 | 0.92 | 0.95 | 0.93 | 0.93 | 0.92 | 0.90 | 0.90 |
| DCADg, mEq/kg | 357 | 348 | 342 | 357 | 349 | 327 | 367 | 349 | 339 | 344 |
| Total Ca: total P | 0.60:1 | 1.29:1 | 2.00:1 | 2.71:1 | 3.40:1 | 0.40:1 | 0.85:1 | 1.32:1 | 1.79:1 | 2.25:1 |
| Total Ca: STTD P | 1.31:1 | 2.81:1 | 4.38:1 | 5.94:1 | 7.44:1 | 0.64:1 | 1.36:1 | 2.12:1 | 2.88:1 | 3.61:1 |
| STTD Ca: STTD P | 0.88:1 | 1.81:1 | 2.75:1 | 3.69:1 | 4.63:1 | 0.42:1 | 0.88:1 | 1.33:1 | 1.79:1 | 2.24:1 |
aAll diets were formulated to have the following quantities of NE (kcal/kg), CP (%), AA (expressed as standardized ileal digestible AA; %), and minerals (%): NE, 2520; CP, 19.30; Arg, 1.20; His, 0.47; Ile, 0.72; Leu, 1.42; Lys, 1.23; Met, 0.40; Phe, 0.84; Thr, 0.73; Trp, 0.22; Val, 0.78; Na, 0.47; Cl, 0.33; and K, 0.90. Values for NE and standardized ileal digestibility, and concentration of macro minerals in ingredients were from NRC, 2012. Value for STTD Ca and STTD P are calculated value. (NRC [1], Stein et al. [2])
bThe vitamin-micromineral premix provided the following quantities of vitamins and micro minerals per kilogram of complete diet: vitamin A as retinyl acetate, 11136 IU; vitamin D3 as cholecalciferol, 2208 IU; vitamin E as DL-alpha tocopheryl acetate, 66 IU; vitamin K as menadione dimethylprimidinol bisulfite, 1.42 mg; thiamin as thiamine mononitrate, 0.24 mg; riboflavin, 6.59 mg; pyridoxine as pyridoxine hydrochloride, 24 mg; vitamin B12, 0.03 mg; D-pantothenic acid as D-calcium pantothenate, 23.5 mg; niacin, 44.1 mg; folic acid, 1.59 mg; biotin, 0.44 mg; Cu, 20 mg as copper sulfate; Fe, 126 mg as iron sulfate; I, 1.26 mg as ethylenediamine dihydriodide; Mn, 60.2 mg as manganous sulfate; Se, 0.25 mg as sodium selenite and selenium yeast; and Zn, 124.9 mg as zinc sulfate
cAEE = acid hydrolyzed ether extract
dPhytate was calculated by dividing the phytate-bound P by 0.282 (Tran and Sauvant [16])
ePhytate-bound P values were calculated from analyzed phytate-bound P in the ingredients
fNon-phytate P was calculated as the difference between total P and phytate-bound P
gDCAD = dietary cation-anion difference. The DCAD was calculated as Na + K – Cl