Some signs you might see in a duck with viral hepatitis are tremors and rapid leg contractions. You may also notice a loss of appetite, diarrhea, nasal discharge, and bloodstained vents.
Signs of duck plague include tremor, reduced egg production, ruffled plumage, nasal discharge, photophobia, and thirst. You should separate the infected ducks from healthy ducks as soon as the disease is detected and diagnosed.
When in the lungs, the spores infiltrate the air sacs and cause the formation of plaques. Besides causing the ducks to shake, you’ll notice symptoms such as gasping, dehydration, loss of appetite, isolation, and lethargy.