I re-read the article, and it says 28%, not 38%. I don't know how that transmuted to 38% in my brain. The questions are still relevant, though, it's still info I need. Thanks, all!
I've been feeding in the 18%-22% range since late last winter. Our weather has been really weird this year, much cooler than normal, much wetter than normal, a week of cool and a week of hot and steamy, then cool again, all summer. My hens have been molting off and on since spring. I figured it was because the weather had them all messed up, it certainly did mess with everything else. I'm wondering now, could excess protein cause excess molting? I've always read that extra protein helps get them through molt faster, and when I've boosted protein before, it seemed to help a lot, feathers grew in better, egg production went up.