I looked around the website as much as I could and I could not find any information about raising deer or elk on a farm for meat. What are the rules, what permits would I need? Would I need to post no trespassing and no hunting? How likely is it that they would be bothered more than cows in pasture land?
Domestic wildlife (deer and elk) are considered livestock and are therefore managed by Idaho Department of Agriculture. You would have to contact them for rules and regulations regarding game farming.