Prevention of duck flu in autumn and winter

The disease is a disease caused by Influenza A virus of the orthomyxovirus group, which causes mild respiratory symptoms. Secondary bacterial infection is an important factor for death. Diseased ducks and poisoned ducks are the main sources of infection. They excrete high amounts of toxic waste and can easily contaminate feed, lakes and ponds. The disease is prone to fall and winter, usually oral infection, 2-6 weeks old ducklings are most susceptible, its incidence and mortality are closely related to the strength of the virus strain and secondary infections of other diseases, can be from asymptomatic, No pathological changes occurred until 100% of deaths occurred. Clinical symptoms: The incubation period of this disease depends on the strength of the virus strain, the infection dose, the route of infection, and whether there are complications. The changes are relatively large. The short ones last for several hours and the long ones may last for several days. In some ducklings, there are no obvious symptoms and they die quickly, but most diseased ducks have respiratory symptoms. Suffering from sudden onset of diseased duck, depressed spirit, neck-down, elevated body temperature, loss of appetite or waste; sneezing, nasal or serous fluid in the nasal cavity, clogged nose, breathing difficulties, often appear to swing, open mouth Wheezing symptoms; one or both sides of the infraorbital sinus swollen; late can not stand, squat before death. Chronic cases, loose feathers, weight loss, growth retardation. Control measures: 1. Strictly introduce the species, do not introduce eggs or diseased ducks from the affected areas. Daily strengthening of feeding and management, adhere to do a good job of epidemic prevention and disinfection work, in particular, do a good job of ducklings cold and warm, enhance the body resistance of ducks to prevent the occurrence of this disease. 2. In the event of an outbreak, it must be reported immediately. Under the guidance of animal epidemic prevention agencies, comprehensive measures such as blockade, isolation, burning of corpses, and disinfection shall be adopted according to statutory requirements to put an end to the epidemic. Disinfection can use 5% cresol, 4% sodium hydroxide, 0.2% peracetic acid and other disinfection liquids. For healthy ducks or suspected infected groups in affected or threatened areas, emergency immunization with avian influenza inactivated vaccines designated by the Ministry of Agriculture shall be used. 3. There are no practical specific treatment methods for this disease, and some supplementary treatment measures can be taken appropriately: The use of the same type of hyperimmune serum and high immunity egg yolk in the early stage of disease is effective. During the infection, inject large doses of penicillin and the appropriate amount of antibiotics such as gentamicin or enrofloxacin, or ribavirin soluble powder by 0.5 g/l water for 3 days, etc., which can greatly reduce the influenza virus Loss caused. Apply Modified Shuanghuanglian Oral Liquid 0.5g/toner, 2 times per day for 3-5 days, or Amantadine Hydrochloride, Viral Ling, Ribavirin and other antiviral drugs, also have good inhibition of influenza virus effect. China Agricultural Network Editor

Posted on June 22, 2018