Ruminal fermentation variables of cows fed the four
diets are shown in Table 3. Treatments did not affect rumen
pH, which only ranged from 6.25 (MOS+SC) to 6.41 (SC).
The molar proportion of propionate was slightly higher for
the MOS diet. Although isovalerate accounted for less than
1% of total VFA, the MOS+SC supplemented cows had the
highest proportion of isovalerate (p