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
| No. | Equation | R 2 | RSD | P -value |
|---|---|---|---|---|
| 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 |