Sorodiagnóstico de doenças da reprodução em rebanhos de bovinos leiteiros de assentamentos rurais de Corumbá, MS / Reproductive diseases serosurvey in dairy cattle from rural settlements of Corumbá city, Mato Grosso do Sul state, Brazil

ABSTRACT

This investigation was carried out in dairy cattle from four rural settlements of Corumbá, MS, Brazil, in order to assess the seroprevalence of bovine herpesvirus 1 (BoHV-1), bluetongue virus (BTV), and Leptospira; and the prevalence was 50.9 per cent (179/352), 51.3 per cent (181/353), and 35.8 per cent (125/349), respectively. Association between frequency of seropositive animals and evaluated rural settlements (P<0.01) was found for Leptospira, and indicated the influence of environmental factors in bovine infection. Age was significantly related to BoHV-1 (P<0.001), BTV (P<0.001), and Leptospira infection (P<0.01), showing higher number of infection among older animals. Once the bovine herds were not vaccinated, the presence of seropositive animals indicated that these infections occurred in rural settlements herds of Corumbá assayed, and certainly induced economical loss.(AU)