My chickens won't eat the fodder I grow! They eat some of the sunflower seed sprouts, but barely touch the wheat or barley. I was so disappointed!
Sometimes they are hesitant to try new things so give it a try for awhile before giving up. Also, when are you feeding it. If you want to be sure they eat it give it to them in the morning when they are most hungry before you give them any food. They give them feed a little later. Look it over really carefully and make sure there isn't mold or anything that is putting them off.