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Gizzard worms - Geese

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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.