For a week or so, I've been keeping an eye on two of my bucks' coats. It looked to me like their winter coat was maybe shedding. I found that a bit strange since we were in January, but it has been abnormally warm. The tip of my senior buck's scrotum was also balding - I treated it with Nu-Stock which always works for us when it comes to that issue. Today I noticed the hair on my senior bucks' face is thin enough that I can see some of his pink skin on his cheeks and forehead. This isn't normal for him. My first thoughts were a possible zinc deficiency, or that they have mites. I gave both bucks a human zinc pill, crushed up inside a treat. My question is, how much zinc should I give them before I know whether this is zinc related, and is it going to hurt them if I give it uneeded?