A pig farm has more than 1200 pigs, pigs, and sows. In order to save costs, the construction of the pig house is relatively simple, and the breeding density is high and the sanitary conditions are poor. Although pigs were all injected with swine tick vaccine, swine streptococcus vaccine, swine hoof vaccine, pseudorabies vaccine, and pig triple vaccine, due to the poor feeding environment, 37 pigs died and died for 2 consecutive weeks since early February 2006. . The emergency treatment with dexamethasone, long-acting fungus, penicillin, streptomycin, cephalosporin, and other drugs for the treatment of pigs, the effect is not obvious, there are still dead pigs. (a) clinical symptoms The body temperature of the sick pig is 39 to 41°C, loss of appetite, shortness of breath, difficulty, and mouth, nose, and ears are blue-purple. Those with longer duration of the disease had hyperemia or purpuric skin, and some piglets developed watery diarrhea, anemia, and jaundice. Seriously ill pigs cough severely and their gait is unstable. (b) necropsy There is a lot of turbid fluid in the chest cavity, and lymph nodes in the inguinal lymph nodes and spleen are heavily swollen. The trachea and bronchi are rich in foamy bloody exudates. The lungs are firm in texture, dark in color, and puddled, with a fragile cut surface. The liver appeared different degrees of atrophy; it showed patchy necrosis. The spleen is swollen. The kidneys are pale and scattered in white lesions. (c) Diagnosis According to its clinical features, respiratory symptoms are most pronounced, with severe cough, difficulty in breathing, and blue-purple mouth, nose and ears. Anatomical features, the lesions are also mainly in the lungs, the lungs are hard dark gray spots necrosis. In the prevention of vaccination and medication, pigs were all injected with triple vaccine, swine streptococcus vaccine, and pseudorabies vaccine. The use of antibiotics in the treatment of the drug was not effective, and the use of serum treatment after the onset of recovery had achieved significant results. Based on this, it was diagnosed as a mixed infection of Porcine Blue Ear (Pigs Reproductive Disorder Syndrome) and circovirus disease. (4) Control measures Given that there is no specific drug treatment for PRRS and circovirus disease, mainly by vaccination. For the infected pigs, the pig serum after recovery from the illness was used for injection treatment and the symptoms disappeared, gradually returning to health. 1, 40 kg of pigs, each with 4 ml of serum + amikacin 0.3 ml + Ribavirin 0.2 ml, intramuscular injection. The pigs were injected 2 times with an interval of 2 days. 2, 40 kg of pigs, each with 6 ml of serum + amikacin 0.3 ml + Ribavirin 0.2 ml, intramuscular injection. The pigs were injected 2 times with an interval of 2 days. Cattle Medicine,Cattle Medication,Veterinary Drugs For Cattle,Cattle Veterinary Medicine Tangshan Finely Animal Care Co.,Ltd , https://www.faczyme.com