roughage

Also they gave us roughage fur our hosses and wouldn't take pay fur none of it, indicatin' by signs that it was all a free gift.

I keep an abundance of roughage, usually shredded corn, before the cows all the time.

Bean straw is sometimes given as part of the roughage in Scotland, but not in England.

The skins make roughage and keep the alimentary tract active.

On the other hand, there are places where the minimum amount of roughage is wanted.