When I worked at a feed store, we would advise people to feed their young birds a 17% (protein) "all purpose" crumble (this is AFTER the medicated starter), unitl they started to lay - then start layer feed... I have 8 youngsters ready to join the existing flock very soon. When I put them all out, should I change them ALL over to an all purpose feed?? Is that still the way to go? I have 4 laying hens, and I'd feel ok putting them on a non-lay feed as long as I offer oyster shell to the layers. Am I thinking correctly??