We hatched some chicks and are going to eat the roosters and keep the hens for layers. They are all in the same run/coop. Do I start them all on the high protein diet and then when the roosters are gone switch to the layer feed? Also, do I start the roosters on a high protein meat-bird-feed upon hatching or when they get off the medicated chick starter? We processed our first two roosters and they were very very scrawny, but have been on meat bird food since 8 weeks. They are (were) 12 weeks. Thanks so much!