Resumen

MOSQUERA, Ortelio; FREITEZ, Rocío  y  RUMBOS, Ana T. Epidemiological surveillance of bovine brucellosis in Buria County, Simón Planas Municipality, Lara state: 2006-2007 period. Zootecnia Trop. [online]. 2009, vol.27, n.3, pp.263-270. ISSN 0798-7269.

A program of epidemiological surveillance of bovine brucellosis was conducted in Buria County Buria, Simón Planas Municipality, Lara state, Venezuela, during the years 2006 and 2007, through the milk test ring (PAL). Later, positive blood samples from cattle herd animals were tested with the official serological test (card test) and with complementary techniques, standard tube agglutination and 2-mercapto ethanol. The results identified 17 farm reactors to the PAL (8%), ten of whom responded with three and four crossings and the rest with two crosses, while 194 sites were negative for the disease. Among the risk factors, including dairy company, type of milking, vaccination, number of samples, and area of land, no statistical association was found (P>0.05), but for the size of the herd, the Spearman’s rank correlation coefficient showed statistical association (P<0.05). The agreement between PAL test, test card, and 2-mercapto ethanol was very good among the cattle herds which reacted with three and four crossings and a good match for all cattle herds that included reactors. The low number of cattle herds reactors to the PAL and its agreement with the complementary tests allow to recommend this technique to be included in the program, the creation of areas free of the disease, supported by an increase in vaccination coverage, strict control of bovine entry to the county and to strength the training of producers on the impact of this disease on public health and animal production.

Palabras clave : epidemiological surveillance bovine brucellosis; ring test.

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