Mine get two things. Sweet corn (when in season) I get to hand cut acres of it after the owner of the field picks it to sell to customers. Usually there is at least two ears left on each stalk. My deer get a quarter of a truckload a day, if I feed more than that they waste it by only eating the ears off and letting the stalk and leaves go to waste. My deer eat all but the thickest part of the stalk. The other treats I give: Bread and Bagels. They can't seem to get enough. We get weekly truckloads for free for the cattle and deer.Whole wheat, white, Rye. Plus cinnamon, raisin, lemon, and blueberry bagels. I usually feed 3 loaves a day to each of my 6 pens. I have had nothing but positive results from feeding bread for the last 2 years. The yeast in bread is good for the rumen, and it keeps a good body weight on my deer, not too skinny, but yet their not overweight.