Table 6 Most effective prediction equations of digestible energy (kcal/kg; dry matter) based on chemical variables (% or kcal/kg; dry matter) of the corn samples

1

DE = 3889.81 + (46.21 × Ether extract)

0.20

59

<0.01

2

DE = 3335.46 + (44.91 × Ether extract) + (7.59 × Starch)

0.33

58

<0.01

3

DE = 3507.46 + (44.01 × Ether extract) – (20.09 × NDF) + (8.38 × Starch)

0.45

56

<0.01

4

DE = 1062.68 + (49.72 × Ether extract) – (24.89 × NDF) + (0.54 × Gross energy) + (9.11 × Starch)

0.62

48

<0.01