Table 5.
Fermentation profile and dry matter loss after 30 d of ensiling of whole-plant corn silage treated with increasing application rates of lignocellulolytic enzymes from Pleurotus ostreatus at the time of ensiling (% DM, unless otherwise stated)
| Item | Treatments (mg enzymes/kg FM)1 | SEM | P-value | |||||
|---|---|---|---|---|---|---|---|---|
| 0 | 9 | 18 | 27 | 36 | Linear | Quadratic | ||
| pH | 3.64 | 3.60 | 3.71 | 3.59 | 3.64 | 0.02 | 0.91 | 0.35 |
| Lactic acid | 5.82 | 5.33 | 5.08 | 6.17 | 5.35 | 0.56 | 0.92 | 0.65 |
| Acetic acid | 0.84 | 0.84 | 0.82 | 1.24 | 0.78 | 0.18 | 0.53 | 0.34 |
| Propionic acid | 0.52 | 0.73 | 0.55 | 0.99 | 0.34 | 0.18 | 0.81 | 0.12 |
| Butyric acid | ND3 | ND3 | ND3 | ND3 | ND3 | — | — | — |
| Total acids | 7.18 | 6.91 | 6.44 | 8.36 | 6.46 | 0.71 | 0.99 | 0.67 |
| NH3-N, % N | 4.89 | 4.79 | 5.08 | 4.54 | 4.67 | 0.32 | 0.16 | 0.52 |
| DM2 loss | 13.3 | 14.4 | 13.1 | 12.5 | 12.7 | 1.95 | 0.33 | 0.74 |
1Treatments corresponded to the following enzymatic activities: 0 (0 g of enzymatic complex/kg of fresh matter [FM]), 9 (0.587 g of enzymatic complex/kg of FM), 18 (1.156 g of enzymatic complex/kg of FM), 27 (1.734 g of enzymatic complex/kg of FM), 36 (2.312 g of enzymatic complex/kg of FM).
2Dry matter.
3ND, not detected.