According to the Hunter's Education Course, big game species in Colorado are owned by the people of Colorado.
It must be different in some other states, as I have a friend in a Southern state who owns property where he feeds and cares for a large herd of deer. He seems to be able to cull as many as he wants each year, but is careful to assure the overall health of the herd - BUT - he manages all that himself, not the state.
he may have actually stocked the property. lots of game ranches back east and down south have stocked properties with tall fences, so there is no comingling of public and private animals. I know guys with Elk herds. I have owned buffalo and my cousin has a large buffalo operation in Erie and up near Irvings land. So, we can own game animals. They are not caught from wild herds and fenced in though.
The people own the antelope. And the deer and every other non domestic animal. That is the point behind the landowner tag. The animals belong to the people so the tags for the landowner are a way for them to recoup lost profits from loss of feed for their cows and loss of crops. If a landowner allows no hunting what so ever on their property they cannot apply for wildlife damage reimbursement. I agree with the concept behind landowner tags but the tags are not being used as they are meant. I don't know about eastern Colorado, but over the hill the tags are being sold at preimium prices , then the buyer is told he can't hunt the property for which the tag was issued. For those who don't know, a landowner tag is good for the property it was issued and any public land in that same unit. Tag brokers are selling these tags at a premium then not allowing the ranch property to be hunted. I don't care if a guy wants to charge $5000 for a tag, but I'm buying the right to hunt the ranch, not go combat hunting with everyone else.