- In the US we have vast surpluses of corn, and it's heavily subsidized by the government. - Feed lots can fit a whole lot more cows per acre. - Corn tends to

- In the US we have vast surpluses of corn, and it's heavily subsidized by the government. - Feed lots can fit a whole lot more cows per acre. - Corn tends to fatten up cows more (and more quickly) than grazing. - Increased fat content = meat that grades higher and tends to sell for more meaning you also earn more $/lb on top of the other reasons.