The isolation and identification of Actinobacillus pleuropneumoniae in swine lungs with pleuropneumonia in the North of Portugal were reported. A total of 127 swine lungs with and without lesions were examined. The system of lesions classification was based on a semi-quantitative method. Diagnosis was made by isolation and identification of the etiological agent in typical lesions. The occurrence of observed lesions was 75.6% and the occurrence of isolation of A. pleuropneumoniae was 19.7%. In 25 out of 96 (26.0%) lung samples with lesions of pleuropneumonia, A. pleuropneumoniae was isolated.
Actinobacillus pleuropneumoniae; pleuropneumonia; isolation; occurrence
