How many bushels of corn does a cow eat in a year?

Many cows in the world will eat zero bushels per year per head. Cows in the states fed a supplement of corn may only consume five to ten bushels of corn a year per head. Still others that are in a intensive commercial operation may eat anywhere from 50 to 200 bushels of corn per year, if not more, and depending on the weight, class, age, breed and type of cows being fed, as well as what other feedstuffs are fed in addition to corn.