Poultry Breast Blisters Study Guide
Overview and Clinical Importance
Breast blisters (also known as sternal bursitis or keel cysts) are inflammatory lesions of the sternal bursa located on the ventral aspect of the keel bone in chickens and turkeys. This condition represents a significant welfare concern and economic issue in commercial poultry production due to carcass condemnations at processing.
The sternal bursa is a synovial membrane-lined sac in the subcutaneous tissue overlying the keel bone (sternum). It normally functions as a protective cushion, reducing friction between the skin and the prominent keel bone. When subjected to trauma or infection, the bursa becomes inflamed, leading to fluid accumulation and the characteristic blister-like swelling.
Anatomy and Pathophysiology
Sternal Bursa Anatomy
The sternal bursa (bursa synovalis presternalis) is a true synovial structure located in the subcutis on the ventral and anterior aspects of the keel bone. Key anatomical points include:
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