Keeping deer captive behind a fence is illegal here in Vt. The reason is simply to decrease the chance of CWD from coming into the state. Most releases of CWD throughout the country have followed a captive deer or elk facility. Personally...I wouldn't even consider hunting behind a fence. Like Rocky said there is hunting and farming. I do understand that nice beef ribeye I like so much comes after someone kills a beef behind a fence. They don't call that hunting and neither do I.