A discussion of Mareks Disease (MD), Mycoplasma gallisepticum (MG), and bio-security that just finished on the Heritage Large Fowl thread might be of interest to all on this thread, but to amwchickin and pipd in particular. The upshot of much of the talk between those mostly showers and breeders, as I read it, seems to be that MD and MG are everywhere, and it is inevitable that chickens will contract them, so there is no sense in taking bio-security measures or culling sick birds. Some believe that the strong will survive and will produce stronger progeny, while those birds who need meds to survive or who survive poorly should be culled. A few saw no reason not to take these survivor birds (who carry and spread disease) to shows or sell them, since they believe that the diseases are unavoidable anyway. It all seemed like a great way to ensure the spread of disease The discussion runs on the Heritage Large Fowl thread from page 1588, post #15873, through page 1595.
So...what did you conclude after reading the discussion? (I do have an opinion or 2, but interested to hear your thoughts.)