Corn:It is not recommend feeding deer a pure corn diet as the high starch content of corn can cause high acidity in the rumen which kills microorganisms necessary for digesting food. Corn is widely used deer food It is less expensive than the deer mixtures, but not as nutritious. If corn is fed, it should be mixed with oats at a ratio of 4 parts oats to 1 part corn. Do not use corn unless you start feeding it early in the winter before deer are stressed.

Deer need a variety, even in winter. Corn and soybeans left standing, and let them dig through the snow for clover and winter rye.