We are new to Chickens. We currently raise show and milking Nigerian goats and we are really strict about our maintenance routines with worming, hoof trimming, vaccinating, proper nutrition...etc. I need to know how to be just as strict about our Chickens health. We want to raise the happiest, healthiest Chickens possible. What are your maintance schedules like? Vitamins? Minerals? Caccine's? Nutriion musts"?