It depends on the age of the turkey, we start ours on 28 game bird starter, then 19% chick start n grow. The adults we feed during egg laying season a 18% layer, during non laying a regular 16% layer - same as the chicken layer. Some whole corn in the afternoons - more in the winter less in the summer. Fresh greens and grass plus all the bugs etc they can find. This time of year we also boil back quite a few eggs and feed them that.
Steve in NC