Table 2. Effects of applying additives on fermentation characteristics of Napier grass silage
Group | pH | NH3-N/TN | LA | AA | PA | BA | LA/AA | Flieg’s score1) | Grade |
| | g /kg DM | | | % |
Control2) | 4.72a | 258.47 | 15.19 | 0.76 | 0.28 | ND | 20.11 | 57.01b | Average |
Group 1 | 4.49b | 272.55 | 19.49 | 0.84 | ND | ND | 23.22 | 64.19b | Good |
Group 2 | 4.32c | 271.26 | 23.34 | 1.01 | ND | ND | 27.67 | 73.02a | Good |
SEM | 0.062 | 8.133 | 1.610 | 0.063 | - | - | 1.959 | 2.580 | - |
p-value | 0.002 | 0.826 | 0.126 | 0.287 | - | - | 0.383 | 0.012 | - |
Flieg’ s scores (0–100) were ranked into five grades: Poor (0–20), Fair (21–40), Average (41–60), Good (61–80), and Excellent (81–100).
Control, no additives; Group 1, added cellulase; Group 2, added cellulase and starch.
Means within a column with different superscripts differ (p < 0.05).
NH3-N, ammonium nitrogen; TN, total nitrogen; LA, lactic acid; AA, acetic acid; PA, propionic acid; BA, butyric acid; DM, dry matter; ND, not detected; -, default.