Hi everyone, We just received a batch of 62 broilers 2 days ago. One was DOA and we've since lost 5 more. I'll notice one that is very sleep and lethargic and then it's dead. Two were found on their back. Two were found on their sides and almost flattened (which is strange because they aren't dead for very long when I find them). Overall, the chicks are incredibly active and running all over the brooder box. It seems to be a very sudden thing. Any ideas? I was putting Duvet electrolytes/vitamins in their water and feeding them 20% Dumor starter. This morning I switched the water and put about a tablespoon of Bragg's vinegar in the gallon waterer instead.