I bought some 11 mo old BR layers today that have been eating 18% layer feed. All my local feed store carries is 16% layer feed. How big of a differance is 2% ? Will this effect the hens ? the eggs ? Or do I need to cheat on my local feed store & buy 18% somewhere else ? Wait ,they do sell a , mini layer feed 22%, !6, 18 , 22 ?????????? HELP