Table 5. Fermentation characteristics of experimental diets incubated in buffered rumen fluid
Items | n | Treatments1) | SEM | p-value |
Corn TMR | Rice TMR |
pH | 4 | 6.2 | 6.1 | 0.02 | <0.05 |
NH3-N (mg/100 mL) | 4 | 35.3 | 33.2 | 2.47 | 0.44 |
Total VFA (mM) | 4 | 84.6 | 91.5 | 1.71 | <0.01 |
Acetate (mmoL/moL) | 4 | 544.2 | 551.3 | 4.52 | 0.17 |
Propionate (mmoL/moL) | 4 | 276.3 | 274.3 | 3.99 | 0.63 |
Butyrate (mmoL/moL) | 4 | 131.5 | 129.7 | 1.90 | 0.39 |
A:P ratio | 4 | 1.98 | 2.01 | 0.044 | 0.45 |
IVDMD (%) | 4 | 82.9 | 87.0 | 1.01 | <0.01 |
IVNDFD (% aNDF) | 4 | 64.7 | 70.0 | 1.14 | <0.01 |
IVCPD (% CP) | 4 | 85.1 | 88.3 | 2.49 | 0.24 |
Corn TMR, control diet containing 33% flaked corn; Rice TMR, the diet containing 33% rice gain.
TMR, total mixed ration; SEM, standard error of the mean; NH3-N, ammonia nitrogen; VFA, volatile fatty acid; A:P ratio, acetate to propionate ratio; IVDMD, in vitro dry matter degradability; IVNDFD, in vitro neutral detergent fiber degradability; aNDF, neutral detergent fiber analyzed with heat-stable α-amylase; IVCPD, in vitro crude protein degradability; CP, crude protein.