Table 5.
Effects of dual-purpose inoculants on rumen fermentation indices of corn silage incubated with rumen buffer for 72 h.
Item 1 | Treatment 2 | SEM | p-Value | |||
---|---|---|---|---|---|---|
CON | 5M | 6M | MIX | |||
pH | 6.32 a | 6.28 b | 6.26 b | 6.25 b | 0.014 | 0.004 |
Ammonia-N, mg/dL | 35.0 | 35.2 | 34.3 | 33.4 | 1.310 | 0.318 |
Total VFA, mM/L | 138.6 b | 143.0 b | 147.2 b | 161.0 a | 4.668 | 0.001 |
Acetate, % molar | 57.8 | 57.7 | 58.6 | 58.4 | 0.552 | 0.089 |
Propionate, % molar | 22.0 a | 21.3 a,b | 20.2 b | 20.1 b | 0.654 | 0.004 |
Iso-butyrate, % molar | 1.25 | 1.35 | 1.34 | 1.29 | 0.130 | 0.688 |
Butyrate, % molar | 14.6 b | 14.8 b | 15.3 a,b | 15.7 a | 0.337 | 0.004 |
Iso-valerate, % molar | 2.74 b | 3.20 a | 3.08 a,b | 3.03 a | 0.181 | 0.022 |
Valerate, % molar | 1.56 | 1.63 | 1.49 | 1.44 | 0.221 | 0.629 |
Acetate: propionate | 2.63 b | 2.70 a,b | 2.90 a | 2.91 a | 0.116 | 0.009 |
a,b: Means in the same row with different superscripts differ significantly (p < 0.05). 1: VFA, volatile fatty acid. 2: CON, corn silage applied without inoculant; 5M, corn silage applied with Lactobacillus brevis 5M2; 6M, corn silage applied with Lactobacillus buchneri 6M1; MIX, corn silage applied with the mixture of L. brevis 5M2 and L. buchneri 6M1 at 1:1 ratio.