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. 2024 Jan 27;102:skae026. doi: 10.1093/jas/skae026

Table 1.

Composition of experimental diets with varying metabolizable energy (ME)

ME1, kcal/kg
Item Early weaner Pre-starter Starter
Basal 3,400 3,375 3,350 3,325 3,3002 3,400 3,375 3,350 3,325 3,3002
Feedstuff, %
 Corn, yellow dent 23.6 27.5 28.0 28.5 29.0 29.5 32.7 33.2 33.7 34.2 34.7
 Wheat 15.0 20.0 20.0 20.0 20.0 20.0 25.0 25.0 25.0 25.0 25.0
 Whey permeate 24.0 17.0 17.0 17.0 17.0 17.0 10.0 10.0 10.0 10.0 10.0
 Soybean meal 17.0 24.0 24.0 24.0 24.0 24.0 27.0 27.0 27.0 27.0 27.0
 Poultry meal 10.0 4.0 4.0 4.0 4.0 4.0 — — — — —
 Blood plasma 6.0 — — — — — — — — — —
 Fish meal — 2.0 2.0 2.0 2.0 2.0 — — — — —
 Poultry fat 2.0 3.0 2.5 2.0 1.5 1.0 2.5 2.0 1.5 1.0 0.50
 L-Lys HCl 0.50 0.56 0.56 0.56 0.56 0.56 0.47 0.47 0.47 0.47 0.47
 L-Met 0.22 0.20 0.20 0.20 0.20 0.20 0.14 0.14 0.14 0.14 0.14
 L-Thr 0.15 0.18 0.18 0.18 0.18 0.18 0.14 0.14 0.14 0.14 0.14
 L-Val 0.00 0.04 0.04 0.04 0.04 0.04 0.02 0.02 0.02 0.02 0.02
 Dicalcium phosphate 0.10 0.40 0.40 0.40 0.40 0.40 0.65 0.65 0.65 0.65 0.65
 Limestone, ground 0.80 0.75 0.75 0.75 0.75 0.75 1.00 1.00 1.00 1.00 1.00
 Vitamin premix3 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.03
 Mineral premix4 0.15 0.15 0.15 0.15 0.15 0.15 0.15 0.15 0.15 0.15 0.15
 Salt 0.22 0.22 0.22 0.22 0.22 0.22 0.22 0.22 0.22 0.22 0.22
 ZnO 0.25 — — — — — — — — — —
 BMD30 0.03 — — — — — — — — — —
Calculated composition
 Dry matter, % 91.07 90.52 90.46 90.40 90.34 90.28 89.85 89.79 89.73 89.67 89.61
 ME, kcal/kg 3,409 3,401 3,376 3,351 3,326 3,301 3,357 3,332 3,307 3,282 3,258
 Crude protein, % 24.74 21.71 21.76 21.80 21.84 21.88 20.11 20.15 20.20 20.24 20.28
 Crude fiber, % — — — — — — 1.72 1.73 1.74 1.75 1.76
 SID5 Lys, % 1.50 1.35 1.35 1.35 1.36 1.36 1.23 1.23 1.23 1.23 1.23
 SID Met + Cys, % 0.82 0.74 0.74 0.74 0.74 0.74 0.68 0.69 0.69 0.69 0.69
 SID Thr, % 0.89 0.79 0.80 0.80 0.80 0.80 0.73 0.73 0.73 0.73 0.73
 SID Trp, % 0.26 0.22 0.22 0.22 0.22 0.22 0.22 0.22 0.22 0.22 0.22
 SID Val, % 1.01 0.86 0.86 0.86 0.87 0.87 0.78 0.79 0.79 0.79 0.79
 SID Ile, % 0.81 0.75 0.75 0.75 0.75 0.75 0.71 0.71 0.71 0.71 0.71
 Ca, % 0.86 0.80 0.80 0.80 0.80 0.80 0.71 0.71 0.71 0.71 0.71
 STTD6 P, % 0.46 0.40 0.40 0.40 0.41 0.41 0.33 0.33 0.33 0.33 0.33
 Total P, % 0.68 0.63 0.63 0.64 0.64 0.64 0.56 0.56 0.56 0.56 0.56
Analyzed composition
 Dry matter, % 91.24 89.98 89.95 89.84 89.80 89.73 88.23 88.73 88.62 88.44 88.40
 Gross energy, kcal 4,175 4,120 4,131 4,108 4,086 4,019 4,069 4,040 4,022 4,009 3,921
 Crude protein, % 23.37 21.60 20.12 20.18 20.41 19.80 18.74 18.77 18.93 18.82 19.03
 Crude fiber, % — — — — — — 2.47 2.33 2.61 1.10 1.06
 NDF, % 6.77 6.75 6.66 6.09 6.80 5.68 6.70 7.02 6.56 6.37 6.34
 ADF, % 3.25 3.04 3.09 2.84 3.17 3.35 2.49 2.83 2.67 2.36 2.31
 Ca, % 0.95 0.87 0.76 0.79 0.80 0.80 0.79 0.70 0.71 0.72 0.67
 P, % 0.66 0.58 0.55 0.59 0.58 0.55 0.50 0.50 0.50 0.51 0.50

1Metabolizable energy level at 3,400 kcal/kg (CON), 3,375 kcal/kg, 3,350 kcal/kg, 3,325 kcal/kg, and 3,300 (LE) kcal/kg of feed.

2Xylanase supplemented at 0, 1,200, 2,400, and 3,600 XU/kg (LEX) to a diet with 3,300 kcal/kg (LE).

3The vitamin premix provided per kilogram of complete diet: 6,614 IU of vitamin A as vitamin A acetate, 992 IU of vitamin D3, 19.8 IU of vitamin E, 2.64 mg of vitamin K as menadione sodium bisulfate, 0.03 mg of vitamin B12, 4.63 mg of riboflavin, 18.52 mg of D-pantothenic acid as calcium panthonate, 24.96 mg of niacin, and 0.07 mg of biotin.

4The trace mineral premix provided per kilogram of complete diet: 33 mg of Mn as manganous oxide, 110 mg of Fe as ferrous sulfate, 110 mg of Zn as zinc sulfate, 16.5 mg of Cu as copper sulfate, 0.30 mg of I as ethylenediamine dihydroiodide, and 0.30 mg of Se as sodium selenite.

5Standardized ileal digestible.

6Standardized total tract digestible phosphorus.