I understand and I believe you vfem, I really, really do. I also really appreciate all of the help you have given. You know your chickens, there is no doubt about it. In this instance, however, I have to weigh several things.
First, the rate of spread of infection. At this point it is extremely slow. As of today, there are still only 2-4 with the snuffels. That may very well change since I combined the younger CX with the older. The laters show no symptoms at all.
Second, I have to consider the processing time. Many of these chicks will not be around much longer. The older chicks already weigh 4 pounds+ In another 2 weeks, they may be ready to process. The younger chicks (that contain the ill chicks) weigh an average of 2.25 pounds. All are eating, drinking and gaining weight. There is still no sign of nasal discharge or swelling around the head.
Third, I have to consider the withdrawl period for antibiotics in meat chickens. If I continue to administer antibiotics, I run the risk of loosing birds to heart problems or leg problems before the withdrawl period ends. That itself nullifies the use of antibiotics if I loose the birds to those problems.
Fourth, and I hate to say it, but the cost to meat ratio would go down the toilet if I treated the CX with antibiotics for the rest of their short lives. I know that sounds horrible. Believe me, I do. But, facts are facts. They are not dying from whatever they have, nor are they suffering any more than I am with my own lingering head cold. (Is it possible they got it from me?) They are eating, drinking, pooping normaly.
I will say this, if even one of my laying chicks show even the slightest symptoms, they will go straight to the vet for a professional diagnosis. They will be around for many years and I can't afford to take a chance with their health. I know that's an oxymoron, considering they are housed with ill chicks, but at this point in time, they are showing no sign of illness. I don't want to take a chance on degrading their autoimmune system by giving an antibiotic for something I can't confirm. Does that make sense? What I'm trying to say is that I don't want to give anitbiotics to my layers when the CX may have a viral infection, which antibiotics won't cure anyway.
Just try to understand where I am at here. I do appreciate your help, and hope you will continue to give advice when I need it. But in this particular situation, I have to go with my gut.