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| prevent swine flu in winter and winter add time：2013.03.04 views：686 |
| swine influenza (swine flu) is an acute, highly contagious respiratory infection caused by viruses. the incidence of acute, rapid spread, herd incidence rate reaches as high as 100%, the mortality rate is low, but if with actinobacillus pleuropneumoniae, porcine pasteurella mixed infection, are sicker, increased mortality. the disease is zoonotic infectious diseases, in the epidemic during the period, as far as possible to avoid the spread of the virus, while paying attention to the keepers and veterinary personnel protection work. first, the popular features the swine flu in late autumn, winter and early spring season, disease of swine disease and virus latent infection of this disease is the infectious source of swine. the virus is found in the nasal fluid of pigs, the trachea and bronchial exudate, and in the lymph nodes of the lungs and lungs. mainly through the air and droplets, the respiratory tract infection, the disease spreads quickly, usually 2 to 3 days can be spread throughout the entire herd, if secondary or mixed infection of actinobacillus pleuropneumoniae, pasteurella, streptococcus, streptococcus and other serious consequences, often causing great economic losses to the pig industry. two 、 clinical symptoms the incubation period of several hours to several days, the whole herd in 2 days to 3 days at the same time, the temperature rises to 40 to 41 deg c, which up to 42 deg c; the pig disease depression, loss of appetite and even waste vast; often recumbency, refused to move, forcing walking often limp; pigs is difficult to breathe, abdominal breathing, coughing, mucus outflow purulent secretions from the mouth, eyes, nasal secretions, with blood, conjunctival flushing, suffering from swine growth arrest. late pregnancy sows often suffer miscarriage. three 、 pathological changes respiratory tract mucous membrane congestion and swelling, the surface has a large number of foam like mucus, sometimes mucous blood, neck, lung and mediastinum lymph node edema and congestion, cut section, eversion and juicy. the lung tissue is purplish red and atrophy, and the boundary is obvious with the surrounding healthy tissue. mucus and fibrin exudate are present in the pleural cavity. gastric mucosal hyperemia occurred serious congestion, escherichia. spleen swelling slightly. the diagnosis according to the epidemiological characteristics, clinical symptoms, pathological changes can make a preliminary diagnosis, this disease usually occurs in the early spring, late autumn and winter season and climate change at various age, sex, breed pigs are susceptible to infection, high morbidity and low mortality. the pigs showed fever, cough, runny nose. the lesions mainly focus on the bronchi and lungs. four 、 differential diagnosis the main and lung disease, acute swine enzootic pneumonia, tuberculosis, porcine contagious pleuropneumonia, toxoplasmosis and pulmonary filariasis distinguish. five, prevention and control measures the treatment principle of this disease is: symptomatic treatment and control secondary infection. early isolation of sick pigs, improve the feeding environment, strengthen disinfection, ensure high quality feed and adequate drinking water, add multi-dimensional and mineral. injection of muscle peptide peptide, 1 times a day, for 3 days. amantadine hydrochloride tablets, taken orally, two times a day, for 3 days. at present, there is no commercial vaccine for this disease in china. strengthen feeding and management at ordinary times, and do well environmental sanitation and disinfection work in pig house. the occurrence of the disease, it is difficult to prevent the further spread of the disease in pigs, only by improving the management, strengthen the disinfection work, feeding antibiotics to control secondary infection, in order to promote pigs to recover as soon as possible, reduce economic losses. |
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