I'm a practical sort of chicken farmer and my scratch consists of BOSS, plain raw oats, wheat, cracked corn and some wild bird seed thrown in too. The whole oats are the ones left in the bottom of the feeder. ( Yes, I have layer pellets always there!)
BUT... search some BYC threads on sprouting!
I found that sprouting the oats turns them from the least favorite to LET ME AT IT!
Just soak about an inch or two of raw oats in water for a few hours and then let them sit for a few days till you see sprouts. When the sprouts are as long as the grain, give it to the chickens and step back quickly.
Sprouting is supposed to increase the protein and I found that during the winter sprouted oats really helped with condition and egg production. So there: a practical reason to feed oats in a special way!