I feed my babies the medicated feed which is 18% protein until they where about 10 weeks old. I put them out with the rest of the flock and put everyone on a mix of game bird feed 22% protein and flock raiser which is 16% protein then offered the layers free choice egg shells this is what worked for me. They are all on this the babies have just started to lay so I will switch to a layer feed and the game bird feed mix. I would worry more about to much calcium which is what is in the layer feed then the protein.