Swine leptospirosis. Serologic and bactériologie studies in the states of São Paulo, Parana and Santa Catarina (Brazil)

Abstract

The occurrence of leptospiial infection in pigs was determined not only through the detection of specific antibodies based on the results of microscopic agglutination tests but also through attempts of the leptospires isolation from the kidneys of these animals. From 500 serum samples examined by microscopic agglutination test, 42 (8.4%) were positive with titers ≥ 100. The most frequent serovar was pomona being reagents to icterohaemorrhagiae, copenhageni, pomona, grippotyphosa, tarassovi, castellonis, javanica, autumnalis, andamana, shermani, whitcombi also were detected. In relation to animals sex statistical significant differences were not seen (P < 0.05). The attempts made for L. interrogans (Fletcher medium) from 500 samples of renal parenchyma were unsuccessful.