marek's symptoms

[newchickiemom48]

At the end of October I had to put a pullet down who tested positive for Marek's disease. My flock has been asymptomatic until just this week. My rooster has the yellow eye on one side. No other symptoms and he is going about his daily activiites without a problem. I started giving him mutlivitamins via syringe. What should I expect? Will he decline or will he just have a discolored eye? Also is there anything else I can do to help him?

 

[Eggcessive]

There are several good threads to read about Mareks, such as the "Great big giant mareks faq" by Nambroth, and several ongoing threads from people dealing with Mareks in their flocks. I haven't seen it, but some other people have seen only one of the 4 types of Mareks in some of their birds, such as just the eye form. Later on, the birds can have other problems. If possible, pictures of the eye might be helpful.

 

[newchickiemom48]

 

[Eggcessive]

Yes the pupil looks misshapen and the eye discolored. Some report that the eye color changes to grey, but not always. Below are pictures of presumed ocular Mareks. Here are some good links to read about Mareks that have good info:
https://www.backyardchickens.com/a/the-great-big-giant-mareks-disease-faq
https://extension.unh.edu/resources/files/Resource000791_Rep813.pdf
http://www.thehappychickencoop.com/mareks-disease/

photo by Chad Duncan of meiosis or pinpoint pupils of Mareks

photo by Chad Duncan