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Thank you Sue. You are such a great resourse of information. That is what I understood too. I read the vaccine does not cause them to shed the virus, but the vaccinated birds can pick up Merek's and shed the virus without showing any signs of contracting the disease. The vaccine prevents the tumors - as you stated above.
I am so impressed you are sucessfully working on a resistant flock. How long have you been working on that? Do you vaccinate new birds coming in or how do you handle that?
I have been breeding chickens for 5 years, and the 1st 2 years had no problems, and then suddenly one year I have several birds come down with Mareks symptoms, although I didn't have them necropsied, because I didn't know about Mareks. Last year I sold some chicks and they contacted me that one was ill and she thought it was Mareks. Later she emailed me that the necropsy was negative for mareks. So, I'm wondering if it really wasn't Mareks that killed my birds, but I don't vaccinate for anything to try & build resistance.
I have to say, I have a friend that vaccinated for everything, that I sent a hen to for a breeding program that we are startinng. She came back here, about a month ago, and has not shown any symptoms of Mareks or any other disease that they say can shed from exposing non vaccinated birds with vaccinated birds...
I guess we will have to agree to disagree here about Mareks and the ability to get rid of it. From what I have read it is possible and my experience so far has proved to be correct.
query.... What is the survival rate w/mareks and if they survive and they are used for breeding, will one create a mareks resistant flock?