NAVLE® Question of the day

A large herd of finishing swine is evaluated due to reduced weight gain. On examination many pigs have dry coughs which are more apparent when the animals are moving around.

A group of pigs recently sent to slaughter from this farm had a high incidence of pneumonic lesions ventrally in the cardiac and apical pulmonary lobes.

What is the most likely cause of pneumonia in these pigs?

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