Profiling Mycoplasma hyopneumoniae Infection in Commercial Pig Farms Using Serology and Lung Lesions Assessment

( ) is primary pathogen involved in porcine respiratory diseases complex (PRDC). The objective of this study was to evaluate ( ) infection in five commercial pig farms by using serology and lung lesion scoring at slaughter. Five Macedonian pig herds with a history of respiratory diseases were included in the study. Blood samples were taken from pigs at 6, 10, 14, 18, and 22 weeks of age. Ten animals per age group from each farm were sampled and tested for antibodies to . At abattoir, 50 lungs per farm were scored for lesions associated with enzootic pneumonia (EP). All farms were seropositive to . Higher seroprevalence to was observed in grower and finisher pigs, while significant difference (p10) were found among some of the farms (p