You are what you EAT! 5 Surprising things humans feed cows

Our Compass

Source Mother Jones
By Alex Park

In addition to the old standbys of corn, soy, hay (and, uh, drugs), “there’s a lot of stuff which the general public might not think of as feeds which are actually quite common,” says Cory Parsons, a livestock nutrition expert at Oregon State University. For example:

Sawdust: Decades ago, when Bob Batey, an eastern Iowa entrepreneur, observed cows gobbling up sawdust hosed down from his paper mill, he had an idea: Why not make the stuff into a commercial cattle feed? Sawdust is made largely of cellulose, a carbohydrate, but it’s bound together with a compound called lignin, which makes it hard to digest. To strip the lignin, Batey soaked some of the stuff in nitric acid, and voilà! The cows were ready to chow down. “They like it,” he says. “It’s good for them. It’s economical. And it’s green.”

But it was only after a…

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