Calf ascariasis, also known as neocariasis, is caused by parasitizing the small intestine with new roundworms of cattle, usually less than 6 months old calves are prone to occur, the main symptom is digestive disorders, causing diarrhea, abdominal pain, anemia, body wasting and lung lesions, etc., if infected with a large number of insects may also lead to death.
Cattle grazing on the meadows of the mountains. Sunny summer mornings
The adult parasitic worms in the calf's small intestine will lay eggs there and excrete them through feces, and when the external environment is suitable, they will develop into larvae after 7 to 9 days, and after 13 to 15 days, the first metamorphosis occurs in the egg shell, developing into a second stage larvae, that is, infected eggs.
When the cow is feeding on forage, licking foreign objects or drinking water, it can swallow the eggs, and after entering the small intestine, it escapes the larvae, then passes through the intestinal wall, migrates to the liver, kidneys, lungs and other organs for a second metamorphosis, develops into a tertiary larvae, and stays in these organs. When the cow is about 8.5 months pregnant, the larvae are able to migrate to the uterus and enter the placental amniotic fluid, undergoing a third metamorphosis and becoming a fourth stage larvae, and are easily swallowed by the fetal cow and invade their intestines to continue to develop. When the calves are born, the larvae undergo a fourth metamorphosis in the small intestine, and after 25 to 31 days, they develop into adults. Adults generally survive in the intestines for 2 to 5 months, after which they are gradually excreted and become a source of infection.
When the sun is shining, cows grazing on green pasture on green pasture
Recommend a method
Calves 2 months of age (before and after weaning) and 6 months of age are driven once each: Use schenol (1% acetaminoavem injection) Usage: subcutaneous injection, 0.02 ml/1 kg; Dolimidine (1% doramine injection) Usage: intramuscular injection, 50 kg/ml; Oxylijia (5% oxabadazole + 0.2% ivermectin) Usage: Mix, 5 kg body weight 5 g, recommended to use again after 7 days; Sunway (6% albendazole + 0.25% ivermectin) Usage: Mix, 30kg body weight medication 5g, 7 days later is recommended to use again; these deworming drugs, with a broad spectrum of exorbitant animals, exopsites, effectively improve due to in vivo and foreign parasite infection caused by body wasting, loss of appetite, rough fur, pale skin and other symptoms. Such as nematodes: large and small round nematodes, roundworms, pinworms, stomach worms, small intestinal nematodes, lung nematodes (lung filariasis), trichoan (whipworm), intestinal trichinella, crown-tail nematodes (pig kidney worms) and so on. Tapeworms: Moniz tapeworm, radiologic tapeworm, echinococcal tapeworm, etc. Extracorporeal parasites: it can vigorously repel cattle extracorporeal mites, lice, fleas, ticks, etc.