My flock of 22 is up to a 50lbs bag of laying crumble. I'm trying to lighten up my feed bill fast. First thing I did was get new homes for all of my extra roosters. I'm down to down to 16 hens and 2 roosters. One being a silkie so he doesn't eat that much. Next I changed from 16% layer to 21% super breeder and I mix it 50/50 with course scratch containing cracked corn and whole wheat. I also at a coffee can full of oyster shell to the mix. They seem to be eating more food now! I have been feeding this for two weeks and need more feed now. Should I just go back to the 16% layer and leave it alone?