I have done so much reading on Mareks..I have tried all the suggestions for Helping my chickens to survive Mareks. I have lost 5 of my 6 chickens .I now only have one female turken. I will not get my hopes up too high that she will be the lone survivor...but it would certainly be nice. I worry about her being alone..she is extremely social! She talks nonstop..how will she fare by herself?!! also, does anyone know which breeds may carry that gene that may help provide natural resistance to Mareks? I have been reading about that, but have not come across any info on what breeds they are? Maybe its just wishful thinking?