Resumen

ALFARO, Coromoto; ARANGUREN, Yudy; CLAVIJO, Antonia  y  DIAZ, Carlos. Serologic pevalence of leptospirosis in double purpose cattle of the Northeast of Monagas, Venezuela. Zootecnia Trop. [online]. 2004, vol.22, n.2, pp.117-132. ISSN 0798-7269.

In order to evaluate the sanitary characterization on bovine leptospirosis status, 469 paired animal samples of sanguine serum were recolected in 23 representative double purpose farms located in the northeast of Maturín, Monagas, Venezuela. The serologic sample were studied in the Integral Central of Diagnostic and Animal Health (CIDSA), based on microscopic agglutination technique with alive antigens (MAT) for diagnostic of leptospirosis. The global disease prevalence was 48%, with significant difference among farms from 23% up to 71%, (P<0.05), associated at different agroecological conditions. The analysis of the paired sample showed active infection, seroconversion (30%) and past infection (78%) in farms, suggesting the make use this technique in leptospirosis trials. The predominant serovares were Hardjo (80%), Wolffi (60%), Hebdomadis (51%), with significative differences (P<0.05) to Canicola (9%), Bratislava (5%) and Icterohaemorragiae (4%). Most of the infections were related with low tittles (1:100-1:200), particularly with the serovar Hardjo. The wide range of the Leptospirosis prevalence suggests the necessity to evaluate each farm in particular before to carry out preventive or curative treatments, to minimize the disease.

Palabras clave : Bovine leptospirosis; seroprevalence; dual purpose cattle; diagnostic MAT; Monagas.