I am pretty sure a roo should not eat layer feed. I just switched to Flock Raiser. I have a mixed flock of 1 roo, 7 laying lens, 4 hens about to start laying, 10 a little over 10 week old pullets (hopefully all pullets) , and 5 Royal Palm 10 week old poults. The poults are on game starter but as soon as they finish the bag they will get Flock Raiser too. I also have a small feeder with oyster shell available all the time. I was feeding laying pellets and very little scratch to my hens and roo, but felt that my roo wasn't getting enough food and eating layer pellets and my pullets were eventually gonna have to be switched from the starter. So to not have to buy different bags of food for each age. I decided that switching everyone to Flock Raiser was the best way to go. I hope my flock agrees.