Supposedly for ruminants (cattle, sheep, goats, etc.) 85% of their feed is not suitable for human consumption. Quite a lot of agricultural waste (e.g., corn sta

Supposedly for ruminants (cattle, sheep, goats, etc.) 85% of their feed is not suitable for human consumption. Quite a lot of agricultural waste (e.g., corn stalks, spent mash/grain left from beer production) is upcycled through livestock. For this reason it's common to integrate cultivation of crops along with livestock.