Hello all, Thanks to my niece trying to hatch out eggs, our boody hen ended up hatching out a duckling. Mamma and baby are happy and have a small run set up under the nest boxes in the hen house. My main question is around the niacin supplements. Is it better to give niacin in water or brewers yeast on the food? Also is it harmful for mother hen to eat the niacin supplement? They are quite a happy pair and I would hate to have to separate them. Also for how long is niacin supplementing recommended? Thanks!