Dr. Richard Zinn (left) and Ernie Fusi, senior animal care technician. "In order for marbling to occur, "the animal has to achieve chemical maturity -- intramuscular fat deposition is one of the latter stages of fat deposition in the animal."

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New ways to fatten cows - just outside El Centro

Feed them restaurant grease

Fat is plentiful. Fat is cheap. What's more, it's "energy dense," according to Dr. Richard Zinn, a professor of animal science at the 280-acre University of California at Davis Desert Research and Extension Center just ...

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