A breast blister is an enlarged, discolored area on the breast or keel bone often seen in heavy chickens and turkeys. The incidence can be aggravated by wet litter conditions.
Figure 1. Turkeys with (right) and without (left) breast blisters. Source: John Anderson, The Ohio State University.
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This work is supported by the USDA National Institute of Food and Agriculture, New Technologies for Ag Extension project.