Table 1 Base feed composition of the growth phase diets used

Moisture %

10.5

11.3

Fat %

5.5

5.5

Crude fiber %

2.6

2.7

Calcium %

0.72

0.6

Phosphorus %

0.65

0.56

Salt %

0.7

0.55

Copper, added ppm

144

188

Iodine, added ppm

0.62

0.39

Iron, added ppm

119

132

Manganese, added ppm

38

32

Selenium, added ppm

0.26

0.24

Zinc, added ppm

2505

1572

Metabolicenergy, kcal/lb

1540

1557

Crude protein %

20.6

20.0

Lysine %

1.52

1.41

Digestible lysine %

1.37

1.27