I'm trying my best to stay local with my meat bird feed purchases but this last batch of Cornish crosses I raised were not very impressive with their weight gain. I talked to the hatchery and they recommended a higher protein on my feed but my local mills are not making a 20% plus protein chick starter. The one mill actually recommended I get my chick starter from tractor supply which I am trying not to do. Would there be a downside to getting my chick starter from tractor supply and then switching to my local Mills 19% chick meal for the middle phase of growing? I would then go to a 15% finisher feed for the last two weeks. I guess the question is is there a downside to feeding chick meal to "middle-aged birds"?