I would like to know the answer to this as well. I have seen other threads on here referencing a chart, but have been unable to find it when searching. Also, when should you switch from chick starter to meatbird crumbles? I have 11 cornish crosses that are three weeks old still eating starter. I think I am gonna switch them to meatbird crumbles this weekend.
I'm not much help on switching - I feed a 20% non-medicated grower crumble from start to finish, and average about 15lbs of feed per bird at the end of 7 weeks, with a 5lb resulting carcass