You have a long intestinal tract, adapted to slowly digesting foods, and to the work of extracting nutrition from a mass of roughage.
"The Book of Life: Vol. I Mind and Body; Vol. II Love and Society"
Upton Sinclair
A bedding of short straw will keep the fattening pens clean and provide roughage.
"A Living from the Land"
William B. Duryee
When the cow is on pasture from May until November no other roughage is required, provided of course the grasses and clovers are plentiful.
"A Living from the Land"
William B. Duryee