This site right here is probably the best online source for chicken information. We have a vast membership of people from all around the world. Some members know more about how to treat chicken ailments than most vets. Some have read/studied chicken feed extensively. Some have kept and observed...
Why are you avoiding fish or soy? They are both good and inexpensive sources of protein. Depending on your answer, what else I say may be a moot point.
Better than a layer formula is an All Flock or Flock Raiser or Flock Maker formula. Most every brand of chicken feed has one of those, and I...