Introduction
A nematode worm parasite, Amidostomum anseris, affecting geese and ducks. Worms develop to L3 in eggs and infection is by the oral route direct from environment.
Signs
- Depression.
- Loss in condition and weight.
- Slow growth.
Post-mortem lesions
- Ulceration, necrosis and partial sloughing of gizzard lining, muscular wall may be sacculated or ruptured.
- Adults are 2-4 cm long and usually bright red.
Diagnosis
Lesions, visualisation of worms.
Treatment
Levamisole, benzimidazoles.
Prevention
Rotation of ground on annual basis.