Table 3.
Ingredient composition and nutrient analysis of experimental diets containing 0.31% standardized total tract digestible (STTD) P, as-fed basis1
| 0.31% STTD P | ||||||
|---|---|---|---|---|---|---|
| Total Ca, % | 0.12 | 0.29 | 0.46 | 0.61 | 0.78 | |
| STTD Ca, % | 0.08 | 0.18 | 0.29 | 0.38 | 0.49 | |
| STTD Ca: STTD P | 0.26:1.00 | 0.58:1.00 | 0.94:1.00 | 1.23:1.00 | 1.58:1.00 | |
| Item | ||||||
| Corn, % | 65.00 | 65.00 | 65.00 | 65.00 | 65.00 | |
| Soybean meal, % | 20.00 | 20.00 | 20.00 | 20.00 | 20.00 | |
| Cornstarch, % | 12.85 | 11.55 | 10.25 | 9.12 | 7.81 | |
| Soybean oil, % | 0.45 | 1.30 | 2.15 | 2.90 | 3.75 | |
| Calcium carbonate, % | – | 0.45 | 0.90 | 1.28 | 1.74 | |
| Sodium bicarbonate, % | 0.40 | 0.40 | 0.40 | 0.40 | 0.40 | |
| Monosodium phosphate, % | 0.90 | 0.90 | 0.90 | 0.90 | 0.90 | |
| Sodium chloride, % | 0.20 | 0.20 | 0.20 | 0.20 | 0.20 | |
| Vitamin mineral premix2, % | 0.20 | 0.20 | 0.20 | 0.20 | 0.20 | |
| Analyzed composition | ||||||
| CP, % | 14.70 | 15.02 | 14.54 | 14.41 | 14.37 | |
| AEE3, % | 2.15 | 2.81 | 3.29 | 3.78 | 4.21 | |
| ADF, % | 3.09 | 3.47 | 3.49 | 3.61 | 3.65 | |
| NDF, % | 8.09 | 8.14 | 8.97 | 9.65 | 9.98 | |
| DM, % | 90.75 | 91.10 | 90.94 | 90.40 | 90.57 | |
| Ash, % | 3.20 | 3.50 | 3.57 | 3.96 | 4.12 | |
| Ca, % | 0.13 | 0.27 | 0.50 | 0.72 | 0.95 | |
| P, % | 0.50 | 0.45 | 0.51 | 0.54 | 0.52 | |
| Phytate P, % | 0.10 | 0.11 | 0.14 | 0.14 | 0.16 | |
| Calculated composition | ||||||
| NE, kcal/kg | 2,629 | 2,629 | 2,629 | 2,629 | 2,629 | |
| Na, % | 0.37 | 0.37 | 0.37 | 0.37 | 0.37 | |
| Cl, % | 0.15 | 0.15 | 0.15 | 0.15 | 0.15 | |
| Total Ca:total P | 0.24:1.00 | 0.58:1.00 | 0.92:1.00 | 1.22:1.00 | 1.56:1.00 | |
| Total Ca:STTD P | 0.39:1.00 | 0.94:1.00 | 1.48:1.00 | 1.97:1.00 | 2.52:1.00 | |
| STTD Ca:STTD P | 0.26:1.00 | 0.58:1.00 | 0.94:1.00 | 1.23:1.00 | 1.58:1.00 | |
All diets were formulated to have the following concentrations of standardized ileal digestible AA: Arg, 0.86%; His, 0.36%; Ile, 0.53%; Leu, 1.18%; Lys, 0.65%; Met, 0.22%; Phe, 0.64%; Thr, 0.55%; Trp, 0.15%; and Val, 0.59%.
The vitamin-micromineral premix provided the following quantities of vitamins and micro minerals per kilogram of complete diet: Vitamin A as retinyl acetate, 11,136 IU; vitamin D3 as cholecalciferol, 2,208 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, 0.24 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.
AEE = acid hydrolyzed ether extract.