1, clinical manifestations: the most common symptoms are cough, some abdominal breathing, body temperature increased to about 39 degrees celsius, feces soft. in individual cases the pigs have mucus in their nasal cavities, and some hind legs can not stand. it is very difficult to walk. back hair shaggy, lethargy, loss of appetite or waste away, like drinking water. if not timely treatment will appear ear tip and tail cyanosis after scab, pigs grow very slowly gradually.
2, the incidence of reasons: because of climate change, not in a timely manner in piggery heat preservation cold work, caused by swine disease resistance decreased, causing infectious diseases of respiratory tract infectious pleurisy, mycoplasma pneumonia syndrome. in addition, the heat preservation and cold protection of the pig house neglected the ventilation and ventilation of the pig house, resulting in the decrease of air quality in the house, and the prolonged bad gas stimulation caused by the respiratory tract of the pig.
3, pathological changes: chronic death of pigs found pleural effusion, pale yellow. the lung and chest cavity are adhesion, the whole body lymph node enlargement, the liver swelling, the texture becomes crisp. there was slight swelling of the kidney and no obvious change in the spleen.
4, the treatment measures in per ton feed added for fu 200 grams -300 grams, heavy kechuanning 300 grams, 300 grams of drugs, continuous feeding for 10 days. if you find a cough, dyspnea and appetite decline of the pig immediately isolated, feeding alone, and symptomatic treatment, intramuscular injection legend, continuous medication, once a day until the recovery of sick pigs. in addition, increase the level of protein in the feed and increase the multidimensional. not only to do a good job of insulation and cold work, but also to do a good ventilation. at the same time, feed management should be strengthened to improve the feeding environment, attention should be paid to reducing the dust in the feed and improving the nutritional level of the feed. do all kinds of epidemic prevention, prevention, prevention and treatment, can reduce the occurrence of the disease. |
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