UPDATE ON MY ISBAR SAGA:
Some of you were interested in the eventual outcome of my situation. I will make a quick recap for those not familiar.
I've had a breeding trio of Isbars since spring. All chicks hatch fine, and at about 2-3 weeks old stop eating and drinking, and then die. Probably 90% death rate. Very frustrating. The adult pen is moved in the yard once-twice per week, brooder and incubator properly disinfected, tried both regular and medicated feeds, treating for cocci, disinfecting eggs, all with no improvement. I was puzzled as the only conclusions I had were 1. genetic problems (but my rooster is from a different person than my hens so I didn't think this was likely) 2. some kind of infection that was vertically transmitted. From my research most yolk infections lead to death in less than a week.
I took 3 chicks an hour away to the state university testing lab. While waiting for the results, I began treating all the pens with Tetroxy HCA (tetracycline). By the time the results were back, my chicks were surviving again- about 80% survivability. OSU was very surprised that tetracycline worked as it is such a low level general antibiotic but they sent me the results and wished me luck. I finished treating the adults and all chicks that were hatched before the eggs were "clean" and then stopped treatment. Well in the last few weeks again my survivability rate has dropped, to about 40%. So I took the next step suggested by OSU and took a chicken and the lab results to a vet this morning. Finding a vet to see a chicken was a ride in itself....
Quote: Rinda you can find Baytril online; look for pigeon products. Look for the 10% solution. It is a great product and is one of the few that is supposed to eradicate the carriers of salmonella. Enrofloxin is the same drug I believe; I know it is the next best substitute. You can also find Baytril listed for dog and cats and I know vets can prescribe it for them. Cipro is the human equivalent of Baytril but is quite expensive without a prescription.