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Table 2 Growth performance of ducks at days 14 and 35 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

BW, g

Feed intake, g

F/G, g/g

BW, g

Feed intake, g

F/G, g/g

Treatment2

    T1:PC

-

695.1a

955.0a

1.48a

2395a

3950.1a

2.07

    T2:NC1

-

676.8ab

970.1b

1.55b

2321ab

3908.7a

2.13

    T3:NC1

+

690.7a

996.4b

1.56b

2371ab

3966.0a

2.12

    T4:NC2

-

664.4b

956.2a

1.56b

2276b

3749.6b

2.09

    T5:NC2

+

706.2a

1021.3b

1.56b

2391a

3978.1a

2.11

    SEM

 

6.22

9.71

<0.01

25.37

43.22

0.02

    P-Value

 

<0.01

<0.01

<0.01

<0.01

<0.01

0.239

P-Value of factorial analysis3

    NR4

 

0.803

0.589

0.615

0.625

0.160

0.355

    Enzyme

 

<0.01

<0.01

0.626

<0.01

<0.01

0.782

    NR × Enzyme

0.050

0.067

0.660

0.217

0.043

0.454

  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 pens of 16 ducks.
  3. 2 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.
  4. 3Using negative control treatments with or without enzyme supplementation.
  5. 4NR = Apparent metabolizable energy, digestible amino acid, available P and Ca reduction.