TABLE 7.
Chemical composition of silage ensiled for 30 daysa
| Parameter | Alfalfa silage
|
Italian ryegrass silage
|
||||||
|---|---|---|---|---|---|---|---|---|
| Control | FG 5 | FG 13 | SL 1 | Control | FG 5 | FG 13 | SL 1 | |
| pH | 5.0 A | 5.2 A | 5.1 A | 4.2 B | 4.6 A | 4.6 A | 4.4 A | 3.9 B |
| DM (g kg of FM−1) | 311.2 | 306.6 | 310.0 | 308.5 | 197.3 | 195.4 | 206.1 | 201.8 |
| Lactic acid (g kg of DM−1 | 8.3 B | 8.2 B | 10.0 B | 24.3 A | 21.7 B | 15.3 B | 24.2 B | 59.4 A |
| Acetic acid (g kg of DM−1) | 15.7 A | 17.2 A | 17.7 A | 10.3 B | 21.3 | 16.4 | 23.2 | 18.3 |
| Butyric acid (g kg of DM−1 | 17.2 | 13.5 | 15.3 | ND | 11.6 A | 10.7 A | 12.1 A | 2.4 B |
| Ammonia N (g kg of total N−1) | 108.5 A | 115.5 A | 98.2 A | 44.2 B | 73.5 A | 73.4 A | 87.4 A | 39.6 B |
| d-Lactic acid/total lactic acid | 70.4 A | 74.0 A | 71.2 A | 30.3 B | 60.3 B | 67.7 A | 71.8 A | 37.8 C |
| Gas production (liter/kg of FM) | 6.8 A | 7.5 A | 7.2 A | 2.7 B | 5.8 B | 7.2 A | 6.7 A | 3.0 C |
| DM loss (%) | 6.1 A | 6.4 A | 6.0 A | 2.6 B | 4.3 B | 5.5 A | 5.2 A | 3.3 C |
a
Values are means of three silage samples. Means in the same row with different letters are statistically significantly different (P < 0.05).
b
ND, not detected.