HETERAKIS GALLINARUM (CAECAL WORM) INFECTION

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Causative Agent(s)

Hetarakis gallinarum is a nematode that affects chicken, turkey, duck, and game birds. Direct life cycle (bird-to-bird transmission with no intermediate host).

Clinical Presentation and Epidemiology

Earthworms may ingest the nematode and serve as the source of infection for poultry. Affects the cecum – may cause thickening, inflammation, or nodulation in the caecal walls. Causes only mild disease but transmits Histomonas meleagridis (the protozoan that causes blackhead disease).

Management and Treatment

Tetramisole (40mg/kg), fenbendazole, levamisole (25-30mg/kg).