Quarantine in not effective for Mareks, as some carrier birds are normal in appearance.
It can be expensive to autopsy - no freebies available in Michigan.
Some pathologists do not do a full autopsy (shame on them)
Mareks is long-lasting in the environment, and almost impossible to eliminate in the presence of organic debris (bedding, poop, dirt, porous surfaces, etc.)
Showing animals is always risky.
I agree with all of the above.
I have been told that some necropsy are not even accurate they just decide it was mareks with out actual microscopic evaluation.
False
GA has free necropsies, however,
HOWEVER, in this case, it is worth what you pay for it, not much of anything at all. I know of a case where the lab put out a preliminary diagnosis if MD, never mind that the very obvious cause of death was a huge, raging abdominal infection, noted immediately on the report. Yes, there were small tumors throughout the body, however, any raging infection can send those through the bloodstream to all parts of the body (veterinarian confirmed that).The report was highly suspect, as the flock had
never had any MD symptoms whatsoever.
So, the report was given to an acquaintance who is a very well-respected and well-known veterinarian. This vet had occasion to see, hold and experience the actual birds from that flock over the years. He read the report and said the owner would not likely ever get a final diagnosis (he was correct), that the labs are really geared toward commercial flocks and when they do so many free necropsies, they tend to jump to conclusions and never truly do the required testing necessary to show their conclusion. They often make a diagnosis based on visual inspection only, and he's had to get onto them constantly about that.
His take on the report he reviewed? Complete POPPYCOCK. He said that the owner of the bird with the preliminary MD diagnosis should play the lottery, that there was more chance of winning that lottery than for her birds to have MD in the flock, knowing what he knew of the flock and reading that report, or that she should play the lottery if her birds had MD because of the astronomical odds or however he put it. So, I have zero faith in any lab for anything after that.