Duck viral hepatitis is an acute infectious disease caused by duck hepatitis virus. It is one of the most serious diseases that harms the duck industry and will cause serious economic losses to farmers. . Let’s learn about the symptoms and prevention methods of duck viral hepatitis.

1. Symptoms of duck viral hepatitis

The incubation period of duck viral hepatitis is short, usually 1 to 2 days, and most ducklings become ill suddenly. At the beginning of the disease, the ducklings become lethargic, shrink their necks and droop their wings, move with the group, become sluggish and sluggish, have half-closed eyes, often squat down and doze off, and lose their appetite.

Some sick ducks develop conjunctivitis, and neurological symptoms appear a few hours later, with generalized convulsions and ataxia. The body falls to one side, the head tilts back, the angles are arched, and the feet are in a posture. Spasmodic movements.

All ducks died within 3 to 4 days after infection, and the vast majority died on the second day. Some ducks with acute onset of illness often collapse and die suddenly without any visible symptoms. 2. Preventive measures for duck viral hepatitis

(1) Strict quarantine system. Ensure that breeding ducks, eggs and ducklings are introduced from healthy duck breeding farms, ensure appropriate temperature, humidity, light and clean air, dry mesh and litter in the house, clean water surfaces and grazing areas, and reduce various stress factors .

(2) Adhere to a strict epidemic prevention and disinfection system. Drinking utensils should be washed frequently on weekdays, usually once every 1 to 2 days, and then disinfected with 100% poison, special-effect iodine, etc. The venues and feeding utensils that were contaminated when ducks became ill should be thoroughly disinfected.

(3) Injection of vaccine. Adult breeding ducks are given two subcutaneous injections of duck hepatitis embryonated attenuated vaccine before the start of delivery, 1 ml each time, with an interval of 2 weeks between each time, and a booster vaccine is given 3 months after the start of delivery. If viral hepatitis occurs in a nearby duck farm, the ducklings must be vaccinated again. 3. Treatment of duck viral hepatitis

(1) Inject immune egg yolk homogenate, 1 ml subcutaneously into each duck.

(2) Inject duck virus hepatitis hyperimmune serum into each duck, 0.3 to 0.5 ml intramuscularly or subcutaneously.

(3) Inject recovered duck serum, 0.5 ml into muscle or subcutaneously for each duck within 10 days of age, and 1 ml for each duck between 10 and 20 days of age. Inject 0.5~1.0 ml of duck virus attenuated inactivated vaccine.

(4) Use 0.01% ribavirin and 0.01% enrofloxacin in drinking water, and at the same time add electrolytic multivitamin diluted several times to the drinking water for 3 to 5 days.