It would probably help to know if they were vaccinated. That could explain the presence of antibodies. You might want to contact the person you got the chicken from and ask.
I am so sorry this has happened to you. There are so many things that can go wrong with chickens. I think I never...
Testing for MS in poutry is done by looking for antibodies that would have developed in a bird exposed to the disease or recently vaccinated. The reason for the "suspicion" is that the results are based on the antibody titer or level. Here are the way the test results are worded, depending on...