Resumen

MARTINEZ, D.E. et al. Brucelosis: prevalencia y factores de riesgo asociados en bovinos, bubalinos, caprinos y ovinos de Formosa, Argentina. Rev. vet. [online]. 2018, vol.29, n.1, pp.40-44. ISSN 1669-6840.  http://dx.doi.org/10.30972/vet.2912789.

Brucellosis is an infectious disease affecting domestic and wild species, characterized by the production of reproductive disorders and production losses. It is also a zoonosis of global importance. There are risk factors associated with the presence of brucellosis in domestic animals, which favor the entry and permanence of the disease in a population. In the present work an analysis of the serological prevalence of brucellosis in bovine, buffalo, goat and sheep herds was performed and the correlation between the presence of positive animals and certain risk factors. The work was carried out during 3 years in livestock establishments of the Province of Formosa. Information from samples for serological analysis and epidemiological surveys was compared. A total of 1686 animals were investigated, of which 657 were cattle, 265 buffalo, 569 goats and 195 sheep. Forty livestock farms in the departments of Formosa, Pilagá, Pirané, Pilcomayo and Patiño were analyzed. The prevalence of positive herds was 12.5; 50; 40.9 and 0%; prevalence of positive animals were 1.37; 10.94; 7.9 and 0% in cattle, buffaloes, goats and sheep respectively. The Odds Ratio analysis showed statistical significance for the factors: presence of symptoms, isolation of females close to calving, vaccination coverage and size of the herd. The X2 statistic showed significant differences in the presentation of brucellosis when comparing cattle with buffaloes and goats, but there were no differences when buffaloes and goats were compared. It is concluded that brucellosis is present in the herds of domestic animals of the Province of Formosa and there are risk factors associated with the maintenance of the disease in the populations. Regular application of health management measures reduces the frequency of disease in domestic animals

Palabras clave : ruminants; brucellosis; epidemiology; north Argentinean; prevalence.

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