A Complete Guide to the Prevention and Control Points and Symptom Identification of Swine Ascariasis

Swine ascariasis is a common parasitic disease caused by Ascaris suum parasitizing the small intestine of pigs. It is widely distributed in pig production and is especially common in piglets. The roundworm eggs are excreted with the feces of infected pigs, develop into infective eggs in the external environment, and after being swallowed by pigs enter the body; the larvae must migrate through the liver and lungs before finally returning to the small intestine to develop into adults.

Affected pigs often show reduced appetite, emaciation, slow growth and rough hair coat, and when the larvae migrate through the lungs they may also cause respiratory symptoms such as coughing. In severe infections, a large number of worms gathering in the intestinal tract can cause intestinal obstruction, with piglets suffering particularly obviously, making this one of the important factors affecting breeding profitability.

For prevention and control, regular deworming should be combined with environmental hygiene. Farmers can, under the guidance of a veterinarian, choose suitable deworming drugs and deworm the pig herd according to the treatment course, with particular attention to the deworming arrangements for piglets and sows. At the same time, pens should be cleaned promptly and manure properly handled to prevent eggs from contaminating feed and drinking water.

In daily management, attention should also be paid to keeping the pens dry and controlling stocking density. Newly introduced pigs should preferably be isolated for observation and dewormed before being mixed into the herd. As long as scientific feeding management and standardized deworming procedures are maintained, swine ascariasis is a common parasitic disease that can be effectively prevented and controlled.