My Welsumers and RIR's are 31 weeks old and no eggs, yet. They are fed a 16% layer (all natural). My husband thinks a little cracked corn mixed in the feed will reduce the cost of feeding the hens. I think that they have to eat more layer to compensate for the reduced protein from the cracked corn....which is the reason for no eggs, yet. Our Barred Rocks have reduced production (they are over a year old). Any suggestions would be appreciated.