I've wondered about deer. However, for the last 2 years, they have ignored corn feeders. We have had a really good acorn crop.
I know that pigs, like deer, eat acorns. What do they feed on during the summer?
I talked to my brother who raised a hog and watched her eating habits. When he took left overs and dumped them, she carefully separated them. She ate meat first, then any kind of sweet rolls, and finally vegetables. Corn seemed to be her least favorite food.