That is understandable. After I lost a few chickens mysteriously, I learned that you could learn from opening the abdomen, and alooking at organs. Nowadays, if I lose one, I usually suspect a reproductive disorder, and just do a brief one to look for the problem. The poultry vets in our states...
Sometimes doing a necropsy at home, if you are up to it, can give you some clues if you examine and take pictures of the organs. One thing in the back of my mind would be aspergillosis, a respiratory disease caused by mold spores which can cause wheezing and it can spread to many organs through...
Are you adding the Verm-X to a feed ration? Verm-X is not a feed itself, but a product meant to use a natural wormer. It doesn’t really have anything in it which will actually kill worms. A wormer such as Valbazen or SafeGuard Liquid Goat Wormer would be better to actually treat for worms. If...