Scaly leg

Scaly Leg

Scaly leg, also known as "scaly leg mite infestation," is a condition affecting birds, particularly poultry such as chickens and turkeys. It is caused by the parasitic mite Knemidocoptes mutans, which burrows under the scales of the legs and feet, leading to irritation, inflammation, and the characteristic scaly appearance.

Etiology

The condition is caused by the Knemidocoptes mutans mite, a microscopic ectoparasite that primarily affects the legs and feet of birds. These mites are transmitted through direct contact with infected birds or contaminated environments.

Clinical Signs

Birds affected by scaly leg exhibit several clinical signs, including:

• Thickened, crusty scales on the legs and feet
• Lameness or reluctance to walk
• Swelling and inflammation of the affected areas
• In severe cases, deformities of the feet and toes

Diagnosis

Diagnosis of scaly leg is typically based on clinical signs and physical examination. A definitive diagnosis can be made by identifying the mites through microscopic examination of skin scrapings from the affected areas.

Treatment

Treatment involves the application of topical acaricides to kill the mites. Common treatments include:

• Ivermectin
• Permethrin-based sprays or dips
• Mineral oil or petroleum jelly to suffocate the mites

In addition to treating the affected birds, it is important to clean and disinfect the environment to prevent reinfestation.

Prevention

Preventive measures include maintaining good hygiene and biosecurity practices, such as:

• Regular cleaning and disinfection of coops and enclosures
• Quarantining new birds before introducing them to the flock
• Regular health checks and monitoring for signs of infestation

Also see

• Knemidocoptes mutans
• Poultry diseases
• Ectoparasites of birds
• Biosecurity in poultry farming