Levantamento sorológico da leptospirose suína em animais abatidos em um frigorífico da cidade de Pelotas/RS

Abstract

Leptospirosis is a zoonosis of great importance because of its productive impact and its risk to public health. The knowledge of risk factors for the disease, as well as the main circulating serovars in a region are essential for the control of leptospirosis. In this way, in this work a serological survey of leptospirosis agent was carried out on pigs slaughtered in a refrigerator in the city of Pelotas, RS. Of the 108 swine serum samples analyzed, 38.88% were microscopic agglutination test positives (MAT). Of the 42 reactive pigs, 45.23% came from the Rodeio Bonito region, 26.19% from the Pelotas region, 14.28% from the Horizontina region and 14.28% from the Santo Cristo region. The most frequent serovars were Canicola, Autumnalis and Copenhageni with 52.38%, 23.80% and 21.42% respectively. As for titration, the highest titres were 1: 800, observed against the serovars Canicola, Autumnalis and Bratislava. According to the literature review, the seroprevalence varies between the herds and between the regions. Thus, the knowledge of risk factors for the disease, as well as the main circulating serovars in a region are essential for the control of swine leptospirosis.