Assertion: dog food's fiber | /r/MadeOf | vitamin
Facets:
value: through bacterial fermentation in the colon
type: MANNER
Source sentences:
text: While fiber itself is indigestible and generally considered non-nutritive, some fibers do contain nutrients, such as vitamins and minerals, that can be extracted during digestion, either by the mechanical grinding action of the stomach and intestines, or through bacterial fermentation in the colon.