Chicken stomach nematode disease is a parasitic disease caused by small hook-sharp nematode (axe hook huashou nematode) parasitizing in the muscle and stomach of chickens, with grasshoppers, locusts, weevils, beetles, etc. as intermediate hosts, spinarium nematode (spiny huashou nematode) parasitizing in the glandular stomach of chickens, rat women as the intermediate host, and American tetragymoma parasitizing in the stomach, esophagus and small intestine of poultry.
epidemiology
The life history of the gastrodesia begins with chickens swallowing intermediate hosts containing infected larvae, the larvae molt in the chicken to develop into adults, the female and male adults lay eggs with feces after mating, and the eggs are swallowed by the intermediate host and hatched in their bodies, and developed into infected larvae.
pathology
In the case of spin-shaped Huahua nematode infection, the lesions are mainly in the glandular stomach, which is manifested by glandular gastric congestion or bleeding, and in severe cases, the mucous membrane forms a cauliflower-like ulcer, the front end of the worm is buried deep in the ulcer, and the glandular papilla around the lesion is flattened. Lesions in the first nematode infection are mainly in the muscular stomach and present with hemorrhagic inflammation of the mucosal membrane (the white part after the gold inside the chicken is torn off). Inside the muscles of the muscular stomach there are soft nodules covered with parasites. Severe infection causes gastrointestinal damage and affects the function of the muscular stomach.