I live in a region where the blackhead is terrible. Every time I try to raise turkeys they get it. I thought this time my broad breasted whites raised for the market turkey fair project were getting away scot-free. They've been healthy. I've kept them away from the chickens and I haven't lost a single one. Unfortunately this morning one has been looking lethargic and isn't eating. I have Flagyl on hand but it's a banned for food producing animals. The fair is a month away. Should I treat them and hope the withdrawal is long enough before slaughter? Should I just treat her and tag her to not be sold and hope the others don't get sick? Then I could eat the potentially contaminated one. Should I just let her die? I think that will happen if I don't treat her.