I raised my first flock of meat birds this past summer, freedom rangers from JM Hatchery, and was fairly pleased with the results. However, I am still a "newbie" and thought I would try a batch of White Plymouth Rocks from Mt. Healthy for comparison and am attracted to the lower price and the white feathers. (I live at app. 5000 ft elevation and therefore am not interested in the Cornish Rocks.) I want to order the White Rocks at the same time as a new laying flock. What I am wondering is if I can raise them all together for the first 8 weeks and feed them a ration of 20% protein such as Homestead FastGrow. Or do I start them all on a 16% chick ration (Homestead Poultry Developer) and switch the white rocks to the higher protein at 8 weeks when they are moved to a chicken tractor? I am trying to plan this whole thing out and am a little confused. It would be SO nice to set up the brooder only once and raise them all together in the beginning.