You know, I think there are so many things that cause look alike symptoms that it is very hard to pin point Mareks specifically...so for that reason I have chosen not to cull my one survivor from what I'm pretty sure was Mareks...we've had 7 cases of very similar symptoms over the past year and a half....ranging in age from 3 months to 7 years old. Mostly young rooster or cockerels, too, which is odd, though I've had my one survivor who had it when she was a pullet, and recovered after almost dying...she is now just a little over one year old. All my roosters and cockerels who have had it start the same way....extreme lameness, very hungry, acting basically normal at first except for the lameness, but then they gradually decline and die over a period of weeks. They are of course quarantined once they are ill, but by that time I'm sure it is way too late. None of ours have had any occular symptoms, at least so far. My pullet was different...she was not lame, but she had seizures, and was ill. Like others have said on here, ours free range, so it's really impossible to sterilize everywhere they have been...I just wonder if all the cases really are Marek's, Leukosis, or something else....
