Side worm disease is also called no-slurry disease. This disease mainly uses sputum as the transmission medium, but mosquitoes, burdocks, ticks and other blood-sucking insects other than ticks can also cause transmission. Various cows (yellow cattle, buffalo, cows) are susceptible to age, but their condition increases with age. Local cattle or calves have milder symptoms after infection, but can become carriers (the longest can survive in cattle for 13 to 15 years). Adult cattle over the age of 3, especially in the field, are the most acute, often leading to death. The disease is usually sporadic or localized, especially in the late spring to summer, so it should be noticed. Symptoms due to different infections, fever, anemia, jaundice, weakness; acute systemic symptoms, body temperature can be raised to 40 ° C ~ 42 ° C, difficulty breathing, pulse increase, dry stool, dark black, common There is blood in the sputum, urinating and diarrhea, the urine is clear and often foam, but not hemoglobinuria. In addition, often accompanied by miscarriage, edema and muscle tremors. The mortality rate can be 50%. In the case of sick and dead cattle, there are often sputum attachments. The necropsy was mainly anemia and systemic jaundice. The diseased body is thin, blood is thin, blood coagulation is poor, subcutaneous and omental yellow staining, the liver is slightly swollen, deep yellowish brown, gallbladder enlargement, which is filled with thick bile, kidney swelling, yellow staining. The spleen is enlarged 3 to 4 times, the medulla becomes brittle like jam, the lymph nodes are swollen, the epicardium may have bleeding points, pulmonary edema, and hemorrhagic inflammation in the gastrointestinal tract. Prevention 1 Clearing and killing blood-sucking insects such as cockroaches is the main measure to prevent this disease. In the season of the disease, the cows can be bathed or showered, such as 1% of the trichlorfon solution, once a day, a total of 5 ~ Six times, in order to kill the parasites of the bovine body parasitization, it is also possible to simultaneously inject four times with tetracycline, feeding the cattle at intervals of 2 days (48 hours) or 0.2 mg per kilogram of body weight per day for drug prevention. 2 It is necessary to prevent the forage and utensils from being carried into the pens to prevent infection by surgical instruments or injection needles. Inactivated or attenuated vaccines can be used for immunization in the areas of Changfa. 3 The affected cows should be isolated, carefully cared for, and the body can be sprayed with the fly-killing agent to expel the blood-sucking insects. The treatment can be tetracycline, oxytetracycline or chlortetracycline (10 mg/kg body weight), which has good effect, and can also be used with chloroquine hydrochloride. Intramuscular injection, 200-300 mg/kg body weight per day for 5 days.
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Prevention and treatment of bovine edge disease in late spring and early summer