Histomoniasis
Histomoniasis (blackhead) is a protozoal disease caused by Histomonas meleagridis that targets the ceca and liver. Turkeys are highly susceptible and often die, while chickens are more resistant carriers. The parasite is transmitted within cecal worm (Heterakis) eggs and through earthworms.
Quick facts
- Type:
- Parasitic
- Typical onset:
- Subacute
- Body systems:
- Hepatobiliary, Gastrointestinal, Intestine
- Affected species:
- CHICKEN, TURKEY
Sources & references
- Merck Veterinary Manual — Covers Histomonas meleagridis, its transmission via cecal worms, and the cecal and hepatic lesions of blackhead.
This content is for educational purposes and is not a substitute for professional veterinary advice. If you are worried about your pet, contact your veterinarian.