What causes roundworms in dogs? This is how roundworms grow in dogs’ bodies

Oct 27,2023
4Min

The cause of canine roundworms 1

After puppies under 3 months old swallow infective eggs, the larvae hatch in the intestines. The larvae penetrate into the intestinal wall, travel through the lymphatic system to the mesenteric lymph nodes, and then pass through the lymphatic system to the mesenteric lymph nodes. The blood flow reaches the liver, and then reaches the lungs with the blood flow. The larvae pass through the alveoli, bronchioles, and bronchi, and then are swallowed into the stomach through the larynx. They further develop into adult worms in the small intestine. The whole process takes 4-5 weeks.

The second cause of canine roundworms

After older dogs swallow infective eggs, the larvae travel to various tissues and organs of the body with the blood flow and form cysts. The larvae remain active but cannot After further development, after the female dog containing the cyst in the body becomes pregnant, the larvae are activated and migrate through the placenta to the fetal liver to cause intrauterine infection. After the fetus is born, the larvae migrate to the lungs, and then migrate to the gastrointestinal tract to develop into adult worms. Mature canine roundworms appear 23-40 days after the puppies are born.

Three causes of canine roundworm

Newborn puppies can also be infected by sucking colostrum. After infection, the larvae develop directly into adult worms in the small intestine.

Fourth causes of canine roundworm

Lion roundworm eggs develop into infective eggs under suitable external conditions. After being swallowed by a dog, the larvae escape in the small intestine, burrow into the intestinal wall, develop and then return to the intestinal cavity, where they develop into adult worms in 3-4 weeks.

How to prevent ascariasis in dogs

The prevention of ascariasis in dogs focuses on regular inspections and hygiene.
1. Check puppies once a month and adult dogs once a quarter to see if they are infected with roundworms.
2. If a sick dog is found, deworm it immediately. You can use levamisole, 10 mg per kilogram of body weight, orally; or use mebendazole, 10 mg per kilogram of body weight, twice a day for two days; or use pyrantel (anti-insecticide), 5-10 mg per kilogram of body weight, orally. ; Or use piperazine citrate (dispelling ascarid) 100 mg per kilogram of body weight, taken orally.
3. Clean and sanitize, and change the breeding environment. We must take the cleanliness of the living environment, troughs, and food seriously, remove feces in a timely manner, and perform fermentation processing to eliminate sources of infection.
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