Prevention of Japanese Encephalitis in Pigs in early Summer

In early summer, the climate gradually becomes hot, and all kinds of mosquitoes (such as Culex pipiens, Aedes albopictus, Anopheles mosquitoes, etc.) begin to multiply in large numbers. Mosquitoes are important vectors for the transmission of Japanese encephalitis virus. After feeding on the blood of sick animals, mosquitoes can carry the virus for life and can carry the virus through the winter, becoming the source of infection in the following year. Japanese encephalitis is harmful to many kinds of animals and people, and it does the most serious harm to pigs, especially it can destroy the reproductive performance of pigs, lead to miscarriage of pregnant sows, produce stillbirths, weak fetuses, mummified fetuses, and orchitis in boars. However, there is a lack of effective treatment drugs in clinic. Therefore, breeders should start to do a good job in the prevention of Japanese B encephalitis in early summer.

1. Live porcine Japanese encephalitis vaccine is used for injection. 1 ml of special diluent is added to each part according to the first portion of the bottle label. After complete dissolution, each pig is injected with 1 ml intramuscularly. The period of immune protection was 12 months. The backup sows and breeding boars in positive pig farms can be immunized once 20-30 days before mating.

2. Clean up the ditches and sort out the drainage channels inside and outside the farm as soon as possible to remove all kinds of weeds; after rain, pipes and ditches should be dredged in time to prevent Rain Water from accumulating in the farm, and pig farms in low-lying areas should pay more attention to waterlogging prevention.

Third, deal with feces and urine and clean up the feces and sewage in the farm in time, the feces should be accumulated and fermented, and the ditches and septic tanks should be covered with cement cover. Small pig farms should transport feces outside the farm for fermentation treatment, and bulk farmers should also pay attention to timely cleaning of pens and feces to prevent the accumulation of feces and urine for a long time.

Fourth, hanging screen found that there are mosquitoes activity, that is, should be in the pigsty house screen window, the door hanging screen or install screen door, timely spraying "mosquito and fly net" and other external pesticides. Before nailing the net, the mosquito and fly repellent should be applied in the pigsty, and the unnoticed small corners, wall cracks, ceiling gaps and other places should be sprayed in place.

5. Clean the farm regularly and disinfect it 2 or 3 times a week. Snakes, frogs and toads can also carry the virus. In places where these small animals are more active, more attention should be paid to hygiene to prevent small animals from entering the field.