Table 4.
Effect of wilting rate (target 22.5 or 37.5% DM) and silage additive (without or with) on silage feed quality parameters averaged across cuts and crop types (n = 15).
| 22.5% DM | 37.5% DM | SEM | P value | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Without | With | Without | With | Cut | DM | Cut × DM | Add | Cut × Add | DM × Add | Cut × DM × Add | ||
| DM, g/kg | 250 | 253 | 405 | 414 | 4.952 | < 0.001 | < 0.001 | < 0.001 | 0.240 | 0.807 | 0.541 | 0.980 |
| Organic matter, g/kg DM | 929 | 928 | 928 | 928 | 2.126 | < 0.001 | 0.778 | 0.994 | 0.834 | 0.997 | 0.780 | 0.999 |
| NDFom, g/kg DM | 481 | 483 | 510 | 493 | 9.187 | < 0.001 | 0.040 | 0.976 | 0.398 | 0.967 | 0.313 | 0.789 |
| iNDF, g/kg NDFom | 179 | 183 | 179 | 170 | 7.767 | < 0.001 | 0.434 | 0.813 | 0.731 | 0.998 | 0.411 | 0.952 |
| OMD, % | 72.3 | 71.9 | 71.3 | 72.4 | 0.526 | < 0.001 | 0.623 | 0.975 | 0.452 | 0.995 | 0.183 | 0.707 |
| CP, g/kg DM | 119 | 119 | 121 | 121 | 3.816 | < 0.001 | 0.606 | 0.995 | 0.946 | 0.930 | 0.975 | 0.999 |
| sCP, g/kg CP | 647 | 609 | 623 | 624 | 22.24 | < 0.001 | 0.859 | 0.655 | 0.405 | 0.195 | 0.389 | 0.731 |
| WSC, g/kg DM | 18.7 | 85.7 | 56.8 | 97.0 | 7.513 | 0.243 | 0.002 | 0.505 | < 0.001 | 0.381 | 0.082 | 0.050 |
DM, dry matter; NDFom, neutral detergent fibre; iNDF, indigestible NDF; OMD, organic matter digestibility; CP, crude protein; sCP, soluble crude protein; WSC, water-soluble carbohydrates. Cuts are numbered 1, 3 and 5 for the three consecutive cuts in the three-cut system and 2 and 4 for 1st and 2nd cut in the two-cut system, respectively. Cut × DM: Interaction between cut and dry matter; Add, Silage additive (with or without); Cut × Add: Interaction between cut and Add; DM × Add, interaction between DM and Add; Cut × DM × Add, three-way interaction between Cut, DM and Add.