Cows have a rumen. You can feed them a diet that is almost entirely sawdust and ... | Hacker News

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whyenot on Aug 25, 2017 | parent | context | favorite | on: 'Environmental Nightmare' After Thousands of Atlan...

Cows have a rumen. You can feed them a diet that is almost entirely sawdust and they will do just fine.

mirimir on Aug 25, 2017 [–]

Or newspaper waste: http://www.allaboutfeed.net/Raw-Materials/Articles/2017/3/Fe...

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