What symptom does person get duck flu?

summary

Duck influenza, or duck influenza, is caused by a virulent strain of A avian influenza virus, which causes respiratory symptoms, neurological symptoms and high incidence rate in all kinds of ducks. Pericarditis, a large number of white necrotic spots or clear or liquefying necrotic spots or necrotic foci of pancreas, and breeding ducks. Egg duck showed respiratory symptoms and high incidence rate. It is a viral infectious disease characterized by low mortality rate and sharp drop in egg production. So, which symptoms does it have? Let's get to know.

What symptom does person get duck flu?

The main pathological changes were inflammation of nasal mucosa, filled with serous or mucus in nasal cavity and infraorbital sinus, and caseous in some cases. The mucous membrane of nasopharynx and trachea is hyperemia, the air sac is turbid, edematous or has cellulosic inflammation. Generally speaking, the incidence rate and mortality of duckling 2~6 weeks old are susceptible to oral infection. The incidence and mortality are related to virulence of virus strains and secondary diseases.

Main symptoms: incubation period changes greatly, short hours, long up to several days. Some infected ducklings have no obvious symptoms and die soon, but most of them have respiratory symptoms. Sneezing at the beginning of the disease, there is serous or mucinous secretion in the nasal cavity, the nostrils are often blocked, dyspnea, head shaking, mouth opening and wheezing. One or both infraorbital sinuses were swollen. In chronic cases, the feathers are loose and disordered, thin, and the growth and development are slow.

The sick (dead) ducks presented with mental retardation, tears, neurological symptoms (twisting neck in the shape of "s" or similar to arcus or lying on the side, lying on the back, or drawing water or rushing to the side), dyspnea (opening mouth to breathe and gasping), diarrhea (discharging white or greenish feces). In addition to individual death, egg production decreased sharply (from 90% - 95% to about 10%, or even stopped production), abnormal egg production (thick shell eggs, soft shell eggs, abnormal eggs) and so on

matters needing attention

At ordinary times, we should strengthen the feeding and management, insist on doing a good job in epidemic prevention and disinfection, especially do a good job in keeping ducklings warm and cold, enhance the body resistance of ducks, and prevent the occurrence of this disease. Once an epidemic occurs, it should be reported immediately. Under the guidance of animal epidemic prevention supervision agencies, comprehensive measures such as blockade, isolation, body burning and disinfection should be taken to put out the epidemic.