I don't have them, no, last year someone (i think it was one of the more popular posters like ayzgous, folly or 21 hens but I don't know now and I don't trust my memory ) posted a link to some vet school that had a small study on "blog remedies" for chickens, like adding DE and cider vinegar and herbs. most didn't work and excessive amounts of de in the feed caused minor bleeding.Eh......don't think that's really possible, too fine any sharp edges.
I've put a lot of DE into grain mite infested feed and not seen any bloody poops.
Have there been any quantifiable studies, that you can link, to prove your theory?