Table 5.
Correlation of feed conversion ratio (FCR) with the analysed chemical composition and the predicted values by near-infrared spectroscopy (NIRS) of wheat in diets supplemented with or without xylanase.
| Item | Pearson's correlation coefficients with FCR |
|
|---|---|---|
| Without xylanase | With xylanase | |
| Analysed composition | ||
| GE | −0.27 | 0.38 |
| Fat | 0.14 | −0.26 |
| Nitrogen | −0.47 | 0.07 |
| Calcium | −0.43 | 0.36 |
| Phosphorous | −0.35 | 0.70* |
| NIRS predicted composition | ||
| CP | 0.06 | 0.07 |
| Fat | −0.27 | 0.68* |
| GE | −0.09 | 0.49 |
| AME | 0.53 | −0.45 |
| ADF | −0.34 | 0.63 |
| NDF | −0.31 | 0.69* |
| Total AX | −0.36 | 0.73* |
| Soluble AX | 0.25 | 0.85* |
| β-glucan | −0.34 | 0.55 |
| Lignin | 0.07 | 0.62 |
| Total insoluble NSP | −0.26 | 0.74* |
| Total soluble NSP | −0.23 | 0.60 |
GE = gross energy; NIRS = near-infrared spectroscopy; CP = crude protein; AME = apparent metabolisable energy; ADF = acid detergent fibre; NDF = neutral detergent fibre; AX = arabinoxylan; NSP = non-starch polysaccharides.
*P < 0.05.