How to prevent and cure porcine pulmonary filariasis

Porcine pulmonary filariasis is a kind of helminthiasis parasitized by Angiostrongylus in the bronchioles and bronchioles of pigs. It does great harm to pigs, often causes bronchitis and even pneumonia, and is easy to be complicated with lung diseases such as porcine lung disease and porcine asthma. It is often endemic and is often infected by pigs eating infectious larvae. Piglets mainly cough one month after infection, especially when they exercise in the morning and evening or when they encounter changes in external temperature. Sometimes nostril flow purulent mucus, eye secretions, sick pig appetite is generally normal, but growth stagnation, gradually emaciation. In severe cases, vomiting, diarrhea, dyspnea and severe paroxysmal cough occur. Occasionally elevated body temperature, anemia, anthrax, extreme weakness, and eventually died of failure.

Autopsy examination showed that there were a large number of worms at the end of the bronchus, showing cotton floss, and there was localized emphysema on the surface of the lung lobe, which could sometimes cause bronchial rupture.

[prevention and control measures]

(1) to strengthen breeding and management, pig houses and sports grounds should be cleaned regularly, pay attention to drainage and keep clean and dry, feces accumulate and ferment, and conditional pig farms, pig pens and sports grounds are paved with cement to prevent pigs from eating earthworms and put an end to the breeding of earthworms.

(2) regular preventive deworming should be carried out in the endemic areas of pulmonary filariasis. Piglets should be dewormed once at the age of 2-3 months after birth, and every 2 months thereafter.

(3) levamisole can be used to treat diseased pigs, 7 mg per kg body weight, orally or intramuscularly. For pigs with severe pneumonia, penicillin should be used for 3 days at the same time of deworming. Ivermectin, 0.2 mg per kilogram of body weight, is effective by subcutaneous or intramuscular injection. Albendazole, 10-15 mg per kg body weight, mixed with feed orally.