I wanted to report on an 'experiment' I've been conducting. There were conversations about layer feed vs all-flock with higher protein, the value of giving the chickens a choice, if possible, AND that feather eating and bullying might be related to not enough protein (I do give meat, sometimes.) So, I decided to use one of my free-feeders for layer feed and the other with "grower" or all-flock. Since the day I poured the higher protein feed into the feeder, they have not eaten ONE layer pellet. They are vacuuming down the higher protein feed!
I found the all-flock made my fermented feed too "sticky" in the troughs, and to encourage some more calcium intake, I make the fermented feed with layer pellets (and wheat, oats, & barley, with a dash of sunflower seeds. I give them their shells crushed and also have a container of oyster shell available, so I'm sure they are getting everything they need.
The layer feed will last me another 6 months at least--just using it for fermented. I'm so glad I tried this. (So are the girls!)