copper in deer feed

I am fairly new to raising deer and need to know if i can add all stock big 6 mineral to the feed I was just going to add it on top everyday like a 1/2 cup or so it contains copper min at 260 ppm and copper max at 380 ppm i have been feeding it to wild deer and have not seen any bad effects but i know you cant feed it to some animals so I was just wanting to make sure Thanks for any advice

Nick

www.daywoodwhitetails.com