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Breast Blister


A complex condition of chickens and turkeys occurring worldwide associated with trauma, leg weakness, and infection with Staphylococcus spp. bacteria. Morbidity may reach more than 50% but the condition is not fatal. Poor feather cover and caked or wet litter are predisposing factors. Signs

   Swelling over the keel bone with bruising and discolouration. 

Post-mortem lesions

   Inflammation of sternal bursa along the keel bone which may, in chronic cases, give way to scar tissue. 


Based on lesions. Treatment

Not usually appropriate. Prevention

Good litter management and handling, control of leg problems.