Skip to main content

Table 4 Serum calcium and phosphorus contents, and alkaline phosphatase activity of ducks at 14 d and 35 d of age 1 , Exp. 1

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

Item Enzyme 14 d of age 35 d of age
Ca 2 , mmol/L P, mmol/L ALP, mmol/L Ca, mmol/L P, mmol/L ALP, mmol/L
Treatment3
    T1:PC - 2.35 2.37 446.0 2.65 2.79a 474.2
    T2:NC1 - 2.35 2.52 508.7 2.52 2.51ab 379.5
    T3:NC1 + 2.22 2.6 474.6 2.52 2.29ab 383.7
    T4:NC2 - 2.12 2.55 565.1 2.2 2.05b 382.1
    T5:NC2 + 2.20 2.52 530.8 2.65 2.77a 420.5
    SEM   0.17 0.16 29.07 0.16 0.17 56.45
     P-Value   0.858 0.882 0.088 0.317 0.034 0.724
P-Value of factorial analysis4
    NR5   0.496 0.879 0.119 0.590 0.979 0.719
    Enzyme   0.891 0.879 0.327 0.237 0.210 0.698
    NR × Enzyme 0.585 0.718 0.997 0.237 0.027 0.755
  1. a,bMeans in the same row, values with the same lowercase letter superscripts mean no significant difference (P > 0.05), different lowercase letter mean significant difference (P < 0.05).
  2. 1Data are means of 7 ducks per treatment.
  3. 2Ca = Calcium, P = Phosphorus, ALP = Alkaline phosphatase.
  4. 3 PC = 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 = −100 kcal/kg, −2.5% DAA, −0.15 percentage point avP, −0.12 percentage point Ca.
  5. 4Using negative control treatments with or without enzyme supplementation.
  6. 5NR = Apparent metabolizable energy, digestible amino acid, available P and Ca reduction.