Quote:
Let us know what the necropsy shows. I'm sorry for your loss and hope you can prevent others.
FYI - Sulmet is a sulfa drug used for the treatment of Cocci, a protozoa present in all soil which adult chickens normally have built immunities to. It is, for the most part, a chick disease. Signs of cocci would be bloody poop. I do not believe it is Cocci and would stop the Sulmet immediately - it is very hard on their systems and I'm not sure how long you have been giving it to them but it sounds like it has been many days.
Terramycin, the "alternative" recommended by the "experienced chicken raiser" is an antibiotic and would only treat bacterial infections.
HOWEVER, Wazine, is a dewormer and that's what I would have recommended. It is added to their drinking water. Adult birds are more likely to have worms and the green watery droppings could indicate same.
If you have never dewormed your flock, I would recommend Wazine right away.