Myiasis, also known as flystrike, is a potentially life threatening, parasitic infection where fly larvae (maggots) hatch from eggs laid on the chicken and feed on living tissue.
The most common location targeted in chickens is the area just below the vent, but infestations can occur anywhere on the body. Wounds and fecal material/urates provide a favorable environment for flies to lay their eggs.
Once eggs are laid, they hatch rapidly and produce hundreds to thousands of larvae. Upon hatching, the maggots immediately begin consuming the chicken’s skin and underlying tissues. This causes severe pain, rapid tissue destruction, and can be fatal if not treated promptly.
Flystrike is most frequently seen in chickens living in tropical and subtropical regions but can occur anywhere with large populations of flies. While many species of flies can cause myiasis, some are more aggressive and lead to faster, more extensive damage.
Flystrike develops quickly and should always be treated as a medical emergency.
Treatment of Flystrike in Chickens
Treatment involves:
- Maggot removal: Thoroughly cleaning and flushing wounds, including targeted irrigation in pockets or cavities to expose hidden maggots. Surgical debridement may be necessary to remove any dead tissue.
- Parasitic medication: To kill any remaining maggots.
- Antibiotics : May be needed to prevent secondary infections.
- Wound management: Apply silver sulfadiazine cream and keep area clean.
- Supportive care: In cases of severe infestations, hospitalization and/or fluids and pain medication may be necessary.
- Address underlying conditions: In cases caused by accumulated droppings on vent feathers, investigations should be made to treat the associated illness or condition.
- Environmental modification: Efforts should be made to maintain a more sanitary environment and reduce fly populations.
