ThePoultrySite Quick Disease Guide
A Pocket Guide to
By Paul McMullin
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A complex condition seen in chickens and turkeys. Morbidity is 1-20% and mortality is low. Factors involved may include genetics, nutrition, environment and high growth rate.
- Distortion at hock.
- Various angulations of leg.
- Gastrocnemius tendon may slip.
- Linear twisting of growth of long bones.
- Changed angulation of tibial condyles; intertarsal angulation up to 10% is physiological, greater than 20% is abnormal.
Symptoms, lesions. Differentiate from perosis, arthritis and synovitis.
Selection for good conformation in primary breeding. Adoption of optimal nutrition and growth patterns for the economic objectives of the production system.