NIRS calibration statistics for broad-based prediction equations used to estimate neutral detergent fiber (NDF), in vitro true digestibility (IVTD), protein, and starch of corn silage.
Trait |
N |
Mean |
R2 |
SEC |
SEV(C) |
# PLS terms |
Math trt. |
|---|---|---|---|---|---|---|---|
|
NDF (%) |
838 |
47.0 |
0.93 |
1.53 |
1.60 |
13 |
1,4,4,1 |
|
IVTD (%) |
642 |
80.0 |
0.82 |
1.47 |
1.56 |
11 |
1,4,4,1 |
|
Protein (%) |
844 |
7.5 |
0.92 |
0.32 |
0.34 |
13 |
1,4,4,1 |
|
Starch (%) |
293 | 28.4 | 0.94 | 1.83 | 2.02 | 9 | 1,4,4,1 |
SE = standard error; R = coefficient of determination; SEC = standard error of calibration; SEV(C) = standard error of cross-validation; #PLS terms = number of terms used for modified partial least squares regression.