I have 11 chicks I'm raising for layers and 16 Cornish Giants for meat. They are all 3 weeks old. I was told to switch my meat birds to grower at 3 weeks and leave to others on starter till 8 weeks. So I bought another bag of starter and a bag of grower. I then realized I they have all been eating 16% grower from day 1! I was sure I had read the label and it was the right one. I have now given the layers the starter and not sure what to do with the broilers. I'm am worried that having fed them the wrong feed from the start will harm them.