I have lost 5 of 9 of my pullets/roos, which were 2 months old when I got them. A necropsy on one showed consistency with Mareks.
60% loss is consistent for an unvaccinated flock. I have been in touch with the breeder, who has had no losses with his flocks, including those from the se hatch that he still has. I was surprised to hear that the birds were vaccinated for Marek's, which should have resulted in a 10% loss.
My question: with a 3 hen/1 rooster ratio, I need more hens. I will be getting vaccinated chicks, hopefully this fall. Is there a vaccine-resistant strain of Mareks that I may be dealing with? Or can I assume that there probably an issue with the vaccine my chicks received that reduced its effectiveness and I should be ok with new chicks.
Thanks!
E
60% loss is consistent for an unvaccinated flock. I have been in touch with the breeder, who has had no losses with his flocks, including those from the se hatch that he still has. I was surprised to hear that the birds were vaccinated for Marek's, which should have resulted in a 10% loss.
My question: with a 3 hen/1 rooster ratio, I need more hens. I will be getting vaccinated chicks, hopefully this fall. Is there a vaccine-resistant strain of Mareks that I may be dealing with? Or can I assume that there probably an issue with the vaccine my chicks received that reduced its effectiveness and I should be ok with new chicks.
Thanks!
E