That is to drastic of a change for natural selection, most people don’t really have a clue just how much this changes the natural cycles of nature, besides, what a better way to keep good mature deer on your property than low pressure hunting and proper food sources?
What?? Sounds like your kinda condradicting yourself. And dont worry, natural selection will be fine if you high fence a large piece of property. It takes a loooooong time before deer start to interbreed.