Coffee grounds analyzed (%) 91.1 dry matter,
11.8 protein, 23.1 fat, 42.5 fiber and .7
ash. They had a detrimental effect on tureen
fermentation as measured by in vitro dry matter
disappearance and gas production. The addition
of 10 or 20% coffee grounds to cow rations
containing hay and grain or grain only, reduced
the quantity of dry matter removed from
the rumen, decreased the concentration of total
VFA, and increased that of lactic acid.