I am sure this has been asked before but I couldn't find it. I have 2 3year old does that are showing signs of copper deficiency(rough coat and fish tail, ugly feet) and will be giving each a bolus on Wednesday. How long before things start looking better. One of the does is my Nubian and she doesn't grow much of a winter coat so its not that. Fecals are good with only a couple eggs showing. Also should I withhold feed before doing the bolus so the rumen will be somewhat empty?