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Table 1 Ingredient and nutrient composition of experimental diets (as-fed basis)

From: Addition of tert-butylhydroquinone (TBHQ) to maize oil reduces lipid oxidation but does not prevent reductions in serum vitamin E in nursery pigs

Phase Phase 1 (Weaning – d 12) Phase 2 (d 13 – d 34)
Maize oil Unoxidized Oxidized Unoxidized Oxidized
Antioxidanta + + + +
Ingredient composition, %
 Maize 36.67 36.67 36.67 36.67 55.34 55.34 55.34 55.34
 Soybean meal, 47.5% CP 18.01 18.01 18.01 18.01 34.04 34.04 34.04 34.04
 Unoxidized maize oilb 6.00 . . . 6.00 . . .
 Unoxidized maize oil + TBHQ . 6.00 . . . 6.00 . .
 Oxidized maize oilc . . 6.00 . . . 6.00 .
 Oxidized maize oil + TBHQ . . . 6.00 . . . 6.00
 Dried whey 24.31 24.31 24.31 24.31 . . . .
 Soy protein isolate 10.00 10.00 10.00 10.00 . . . .
 Zinc oxide 0.50 0.50 0.50 0.50 . . . .
 Antibioticsd 0.57 0.57 0.57 0.57 . . . .
 Vitamin/mineral premixe 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.50
L-Lys 0.43 0.43 0.43 0.43 0.53 0.53 0.53 0.53
DL-Met 0.26 0.26 0.26 0.26 0.21 0.21 0.21 0.21
L-Thr 0.12 0.12 0.12 0.12 0.17 0.17 0.17 0.17
 Monocalcium phosphate 1.03 1.03 1.03 1.03 1.16 1.16 1.16 1.16
 Limestone 1.25 1.25 1.25 1.25 1.28 1.28 1.28 1.28
 Salt 0.35 0.35 0.35 0.35 0.77 0.77 0.77 0.77
 Total 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0
Calculated composition
 MEf, kcal/kg 3619 3619 3619 3619 3556 3556 3556 3556
 Crude protein, % 23.88 23.88 23.88 23.88 21.56 21.56 21.56 21.56
 NDF, % 4.82 4.82 4.82 4.82 7.83 7.83 7.83 7.83
 Ether extract, % 8.07 8.07 8.07 8.07 8.44 8.44 8.44 8.44
 Linoleic acid, % 3.88 3.88 3.88 3.88 4.26 4.26 4.26 4.26
 ATTDg P, % 0.39 0.39 0.39 0.39 0.33 0.33 0.33 0.33
 Ca, % 0.90 0.90 0.90 0.90 0.81 0.81 0.81 0.81
 SIDh Lys, % 1.56 1.56 1.56 1.56 1.42 1.42 1.42 1.42
 SID Met/Cys, % 0.86 0.86 0.86 0.86 0.78 0.78 0.78 0.78
 SID Thr, % 0.91 0.91 0.91 0.91 0.83 0.83 0.83 0.83
 SID Trp, % 0.26 0.26 0.26 0.26 0.23 0.23 0.23 0.23
 Lactose, % 17.50 17.50 17.50 17.50 0.00 0.00 0.00 0.00
 Vitamin E, IU/kg 22.00 22.00 22.00 22.00 22.00 22.00 22.00 22.00
 g SID Lys:Mcal ME 4.31 4.31 4.31 4.31 3.99 3.99 3.99 3.99
 g ATTD P:Mcal ME 1.08 1.08 1.08 1.08 0.93 0.93 0.93 0.93
 Ca:ATTD P 2.31 2.31 2.31 2.31 2.45 2.45 2.45 2.45
 SID Met + Cys:SID Lys 55.13 55.13 55.13 55.13 54.93 54.93 54.93 54.93
 SID Thr:SID Lys 58.33 58.33 58.33 58.33 58.45 58.45 58.45 58.45
 SID Trp:SID Lys 16.67 16.67 16.67 16.67 16.20 16.20 16.20 16.20
Analyzed composition, %
 Dry matter 91.14 91.33 91.13 91.17 88.39 88.18 88.21 88.10
 Ether extract 4.72 5.01 4.49 3.81 4.12 4.22 3.79 3.77
 Crude fiber 2.15 2.04 2.04 1.88 3.02 3.26 2.94 2.73
 Ash 7.38 7.20 7.06 7.05 5.46 5.01 6.02 6.01
 Crude protein 22.89 23.72 23.98 23.50 21.28 21.22 22.78 21.60
 Lysine 1.62 1.80 1.72 1.83 1.52 1.54 1.59 1.67
 Methionine 0.50 0.50 0.54 0.51 0.46 0.41 0.49 0.45
 Cysteine 0.32 0.33 0.32 0.33 0.31 0.31 0.34 0.34
 Threonine 0.99 1.05 1.03 1.06 0.93 0.94 0.99 1.01
 Tryptophan 0.32 0.32 0.33 0.35 0.29 0.28 0.30 0.27
  1. aAntioxidant, Rendox CQ (active ingredient is TBHQ; Kemin Industries, Des Moines, IA) was added at 1000 mg/kg in maize oil
  2. bStratas Foods, LLC
  3. cMaize oil heated for 12 h at 185 °C with a constant air flow rate of 12 L/min
  4. dAntibiotics added were 0.175% Denagard (tiamulin 22 g/kg; Boehringer Ingelheim Vetmedica, Inc., St. Joseph, MO) and 0.4% Aureomycin 50G (chlortetracycline 110 mg/kg; Zoetis, Inc., Florham Park, NJ), which provided 38.5 mg tiamulin per kg of diet, and 440 mg chlortetracycline per kg of diet
  5. ePremix for nursery pigs (< 22.5 kg) at 0.5% dietary inclusion rate provided the following nutrients per kilogram of feed: 11023 IU of vitamin A as retinyl acetate; 2756 IU of vitamin D3; 22 IU of vitamin E as DL-alpha tocopheryl acetate; 4.41 mg of vitamin K as menadione dimethylpyrimidinol bisulfite; 9.92 mg of riboflavin; 55.11 mg of niacin; 33.07 mg of pantothenic acid as D-calcium pantothenate; 992 mg of choline as choline chloride; 0.06 mg of vitamin B12; 14.3 mg of pyridoxine; 1.65 mg of folic acid; 2.20 mg of thiamine; 0.33 mg of biotin; 2.20 mg of iodine as ethylenediamine dihydroiodide; 0.30 mg of selenium as sodium selenite; 299 mg of zinc as zinc sulfate; 299 mg of iron as ferrous sulfate; 19.8 mg of copper as copper sulfate; and 17.6 mg of manganese as manganese oxide
  6. fME = metabolizable energy
  7. gATTD = apparent total tract digestible
  8. hSID = standardized ileal digestible