In almost 40 years of feeding cattle, too much corn in the diet will cause sore feet. Now when you feed steers, you feed a large % corn but we are talking of sending them to slaughter before they reach 24 months of age. So the nocturnal I am talking about is when they get to be over 4 years of age and especially when they get over 6 years of age they get such sore feet that they don't move very many acres. When they do move they are going to move at night when they have the least survival pressure. The South Carolina study also was done with year around feeding. What about just feeding from hunting season in the fall during the winter until green up in the spring? I have not done that research and I have thought of doing that except for one reason. In cattle when a cow is not producing milk and gets to much energy which is what corn is, it will produce fatty liver. That cow will rarely live longer than a year after that. So corn is hard on bucks in the summer and hard on the does in the winter. I read articles on the forum where they debate how many does to shoot. We have 20 acres of woods behind the house here and the last 10 years we have always shot every doe we saw. Last hunting season there were at least 13 deer in that woods, which I think is too many and 2 miles away a friend is selling his bow because he doesn't see any deer. What! A mile and half away they are feeding corn and didn't see any deer all of the 3 months of bow season. I am talking about Northern Wisconsin where the forums talk about there are no more deer left because of the wolves. There again if the deer have sore feet, its going to be harder to survive. It may be different in other states. What about Texas... first of all, within the last 6 months there was a fellow here from Texas and paid over $200,000.00 for deer that were raised within 5 miles of here and hauled them down to Texas. I don't think they are raising their own deer it isn't as important what they feed them. My passion is for the teenage bow hunters that they have a chance to shoot at a trophy buck. Those of you that have all the answers I have no argument.