Abstract

SZWAKO, A et al. BOVINE LEPTOSPIROSIS SEROPREVALENCE IN CENTRAL CHACO, BOQUERÓN DEPARTMENT, PARAGUAY. Compend. cienc. vet [online]. 2015, vol.5, n.1, pp.26-30. ISSN 2226-1761.  https://doi.org/10.18004/compend.cienc.vet.2015.05.01.26-30.

ABSTRACT. At Fernheim, Neuland and Menno Colonies, Central Chaco, Boqueron department, Paraguay, 31 cattle ranches were selected, representative of the population, 415 blood samples obtained randomly, in order to determine leptospirosis seroprevalence. Both sexes and older than two years animals were included. No cows at 30 days from pre- or postpartum were sampled, neither those vaccinated cattle up to 3 months prior to sampling. Blood serum samples were processed by the standarized microscopic seroagglutination test including 11 serovars of Leptospira interrogans, considering positive from 1:100 titers. 190 samples were positive (45.78%) to one or more serovars, of which the most frequent were wolffi (77.41%) and hardjo (22.59%); not having micro agglutination reaction to the serovars: icterohaemorrhagiae, borincana, canicola, ballum, pyrogenes, pomona, bratislava, tarassovi and moskva. Simultaneous positives results showed reaction to wolffi and hardjo serovars in 49 samples (25.8%). This investigation concluded that leptospirosis is widespread in Central Chaco cattle, recommending implementation of disease prevention measures.

Keywords : seroprevalence; leptospirosis; bovine; Central Chaco; Paraguay.

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