OK. We spoke to the Ks. State College of Vet Medicine, Dr. Daniel Shaw at the University of Missouri who specializes in poultry, and the Poultry Disease and Research Center at the University of Georgia.Do let us know when you get to the lab and see what they find .
I don't have an answer on the FF .
General conciseness was.... they don't know. But it MAY be, a type of Mareks called transient paralysis, OR a type of botulism, OR toxicity from medicated feed, OR just a vitamin deficiency. Dr. Daniel Shaw thought that perhaps the fermentation process in the fermented feed may be killing the vitamins, vitamin E in particular. IF the affected birds were pigging out on the FF and not eating enough of the crumbles they may be developing a vitamin deficiency. His belief is that the companies that make prepared chicken food include what the birds need and anything else that you may feed will reduce their needed requirements. Like if you feed 18% layer and also give them 9% scratch, then the scratch reduces the overall protein percentage intake of the birds.
Bottom line is that we need to take one of the sick birds to a vet, kill it and do a necropsy and have tissue samples sent to the Poultry Disease and Research Center at the University of Georgia.
Personally, I feel that Dr. Shaw's thoughts on feed is spot on. He was very gracious and spent a good deal of time talking to us about our problem.