I have always fed my girls pelleted Layena . I never had any problems with thin shells, so I never gave them oyster shell. I do have one 1.5 year old Production Red that lays a huge brown egg every day and has never molted. She looks pretty terrible, but everyone else is ok. We always get nice eggs too. Now I am hearing they need animal protein and Purina doesn't have any??? I was just curious what you feed your girls, what your eggs are like, and how they do on it.