How would you know if they were resistant short of exposing them to something? or is it from breeding stock that the parents have already been exposed? lol, had chickens 3 years and still new to all this.
I'd love to know what you find as far as herbs to boost their immune systems.. I would definitely grow some of that..
I said bred to be resistant, not are resistant. I don't know if the breeder has ever had Marek's. The breeder doesn't vaccinate and culls any chicks that present whatever symptoms of illness. No antibiotics, no coddling and fixing. If nature would have selected it for elimination without someone here to help then so be it, but don't let them suffer either.
I couldn't tell you that these are resistant either, I've only made a well educated guess based on what I know of my flock and their history but have no pathology report to say yes it was definitely Marek's.