Table 8.
Stepwise regression equations for SID of CP, Lys, Met, Arg, and Val based upon the chemical characteristics of the 10 rapeseed cake samples (air-dry basis, %).
| Items | Prediction Equations | RSD | R2 | p-Value |
|---|---|---|---|---|
| SIDCP | SIDCP = 90.124 − 0.540NDF | 4.39 | 0.58 | <0.05 |
| SIDLys | SIDLys = 100.107 − 1.229NDF | 2.88 | 0.94 | <0.01 |
| SIDLys | SIDLys = 90.662 − 0.234HT | 8.04 | 0.51 | <0.05 |
| SIDVal | SIDVal = 151.012 − 2.990TGS | 4.69 | 0.57 | <0.05 |
SID, standardized ileal digestibility; CP, crude protein; NDF, neutral detergent fiber; HT, heating temperature; TGS, total glucosinolate; Lys, Lysine; Val, valine; R2, R-square; RSD, relative standard deviation. p < 0.05 means significant difference; p < 0.01 means extremely significant difference.