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.