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Table 1 Diet composition of the positive and negative controls (as-fed basis)

From: Effects of a multi-enzyme complex on growth performance, nutrient utilization and bone mineralization of meat duck

Item 1 to 14 d 15 to 35 d
PC 1 NC1 NC2 PC NC1 NC2
Ingredients, %
    Corn 51.00 49.50 48.40 46.50 47.00 47.50
    Rice bran 5.00 5.00 5.00 8.00 8.00 8.00
    Wheat bran 8.00 9.00 10.00 15.00 15.00 15.00
    Soybean oil 0.60 0.32 0.30 3.88 2.93 2.40
    Soybean meal, CP 43% 20.00 19.00 18.50 8.00 7.60 7.60
    Rapeseed meal, CP 36% 5.00 6.00 6.40 8.00 8.50 8.50
    Cottonseed meal, CP 42% 5.00 5.00 5.00 6.00 6.00 6.00
    L-Lysine HCl 0.240 0.233 0.235 0.270 0.255 0.250
    DL-Methionine 0.211 0.203 0.202 0.126 0.118 0.116
    Calcium carbonate 0.985 1.075 1.202 0.960 1.050 1.178
    Dicalcium phosphate 1.490 0.885 0.580 1.175 0.580 0.280
    L-Threonine 0.045 0.036 0.035 0.044 0.032 0.028
    L-Tryptophan,10% 0.760 0.720 0.710 0.320 0.285 0.275
    Bentonite 0.589 1.948 2.356 0.695 1.620 1.843
    NaCl 0.40 0.40 0.40 0.40 0.40 0.40
    Choline chloride 0.15 0.15 0.15 0.10 0.10 0.10
    Vitamin premixa 0.03 0.03 0.03 0.03 0.03 0.03
    Mineral premixb 0.50 0.50 0.50 0.50 0.50 0.50
    Total 100.00 100.00 100.00 100.00 100.00 100.00
Calculated nutrients
    Metabolizable energy, kcal/kg 2,800 2,730 2,700 2,900 2,830 2,800
    Crude protein, % 19.39 19.31 19.30 16.47 16.46 16.48
    Calcium, % 0.85 0.75 0.73 0.76 0.66 0.64
    Total phosphorous, % 0.77 0.68 0.64 0.79 0.69 0.64
    Available phosphorous, % 0.42 0.32 0.27 0.38 0.28 0.23
    Digestible Lysine, % 0.95 0.93 0.92 0.76 0.74 0.74
    Digestible Methionine, % 0.45 0.45 0.44 0.33 0.33 0.32
    Digestible Threonine, % 0.63 0.61 0.61 0.51 0.50 0.49
    Digestible Tryptophan, % 0.26 0.25 0.25 0.17 0.17 0.17
  1. a,bVitamin and mineral content of the diets derived from the premixes were as follows (supplied per kg): vitamin A, 3,000 IU; vitamin D3, 1,500 IU; vitamin E, 7.5 IU; vitamin B1, 0.6 mg; vitamin B2, 4.8 mg; vitamin B6, 1.5 mg; vitamin B12, 0.009 mg; pantothenic acid, 7.5 mg; folic acid, 0.15 mg; niacin, 20 mg; Cu (CuSO4•5H2O), 8 mg; Fe (FeSO4•7H2O), 80 mg; Zn (ZnSO4•7H2O), 90 mg; Mn (MnSO4•H2O), 70 mg; Se (NaSeO3), 0.3 mg; I (KI), 0.4 mg.
  2. 1PC = positive control; NC1 = -70 kcal/kg, -2.0% digestible amino acids (DAA), -0.1 percentage point available P (avP), -0.1 percentage point Ca; NC2 = -100kcal/kg, -2.5% DAA, -0.15 percentage point avP, -0.12 percentage point Ca.