I know this is an old thread. I am hoping you are still on here. I have posted a thread with questions about Marek's. Can you please please help me? I think that a bird of mine died of Marek's. I didn't know to do the necropsy. How do I know if one of my "new" birds brought it in? Do I assume that's what it was and go through the steps you mentioned? Are the eggs still safe to eat? Should I keep the "new" hens separated from the original ones? Should I call the guy I got them from?
Kimberly13
If you lose another bird, you can refrig it until sending it off to the lab for testing. ( for future use) You won't know for sure if one of the new birds brought it in. The only way to know for sure, is to do a necropsy. You CAN give the vaccine to birds that have been exposed or have marek's, no one really knows for sure if it helps or not. There have been no peer reviewed studies on this issue. You also CAN treat adult birds for cocci, it is only a thiamine blocker, so not really a drug, so won't hurt either, but again, no studies to show if it does or does not help. It's up to you if you chose to go that route. The eggs are ok to eat as is the meat. Marek's does not infect humans. Since the "new" Hen's have already been with the rest of your flock, the whole flock, if it is marek's has already been exposed, so separating them after the fact will not help.
The recommendation for brining in new birds is to quarantine them for ATLEAST 4 weeks, longer is better and I do 2-3 months on chicks. I don't bring in any adult birds as the change of bringing alone something unexpected is so darn high and not just for marek's.
You can call the guy you got them from, but since you don't know for sure that the bird died from marek's, I would recommend asking if he has had any problems with diseases in his flock. Unfortunately, there are people in this world that are less than honest and ethical, so it may or may not do you any good and if he has had marek's or any other disease in his flock and still sold you birds, I doubt he will admit it to you, but if it makes YOU feel better, that again is your choice.
Also, wild birds can and do bring marek's into flocks, so it IS possible that he has a clean flock and they were exposed to a wild infected bird, you might have already had marek's in your own flock and the new bird/birds stressed your flock and the disease reared it's ugly head, OR the man's flock was vaccinated but since the vaccine does not stop them from getting the disease( only from developing the tumors that cause death ), he could have it, have carriers in his flock and not know it. There is a really good thread on here about mareks with tons of info and I believe it is still active. I think the title is "not an emergency, marek's in flock" ?
So sorry you have to go through this!!!! This is a devastating disease! You might want to read up on that other thread. It should answer all your questions.