Is it OK to switch to a layer feed at 17 Weeks? I have read a lot about it being time to switch when you start seeing eggs and that at 17 weeks I could expect eggs within a few weeks. I have not actually received any eggs as of yet, but need to buy another bag of food and wanted some opinions of what to get. The main reason that I am even considering this is that I only have three chooks and they take a long time to go though the fifty pound bags of feed that I can buy here so it would be a while until I could switch feeds if I don't do it now. Another question is: Would putting them on layer early and all the extra calicum that they would be getting encourage them to lay any earlier? Thanks. P.S. We have one Barred Rock and two Rhode Island Reds if that matters.