Resumo

NAVA LOTUFFO, Zoraida Mercedes; BRACAMONTE PEREZ, Magaly Beatriz; HIDALGO DIAZ, Mayra Alicia  e  ESCOBAR LADRON DE GUEVARA, Reina Tibisay. Seroprevalence of bovine viral diarrhea in milk producing herds at Barinas State, Venezuela. Rev. Soc. Ven. Microbiol. [online]. 2013, vol.33, n.2, pp.162-168. ISSN 1315-2556.

The purpose of this study was to determine seroprevalence of bovine viral diarrhea (BVD) in milk producing bovines with no vaccination background, representative of Pedraza and Barinas municipalities at Barinas State, during the May-November 2007 period. The presence of specific antibodies (Abs) against the BVD virus (BVDV) in serum through the indirect ELISA test was determined, associating seropositivity to sex, age group, and number of births with the Chi square test. A total of 223 from 353 sera were positive for Abs against the BVDV, indicating a high prevalence (63.2%). The difference of the ratio of seropositives between both municipalities was not significant (p=0.1572). The rates of seropositive females (63.1%) and seropositive males (63.6%) reveal that sex is not related to the viral infection (p=1.0000). Older age and larger number of births showed greater positivity (p=0.0111 and p=0.0086 respectively). The presence of viral activity in the area together with the inadequate handling of the animals contribute to the diffusion and transmission of the disease.

Palavras-chave : bovine viral diarrhea; milk producing herds; seroprevalence; ELISA; Venezuela.

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