We have a sellinium deficiency in this are where I live. I give both my kids and my lambs a BO-Se injection at birth. My vet has been here many times and she has never once said they need a copper bolus. So, I have never given one. I am still on the fence as to wether all my goats need one or not. Katie, is kindly sending me one dose for this little nigi when she kids (if it ever happens. She is laying around today and not up much. Perhaps the end is nigh?).