Características epidemiológicas da infecção de bovinos jovens de corte, em rebanhos com alto trânsito animal, para BoHV-1, BVDV, BTV e Leptospira spp. no Estado do Maranhão

Abstract

The aim of this study was to determine the epidemiological characteristics of beef cattle infection, high animal movement, for BoHV-1, BVDV, BTV and Leptospira spp. in the state of Maranhão. In this work were studied 86 herds of beef cattle, and the target population were animals between 6 and 24 months old. The association analysis between variables with positive serology for BoHV-1, BVDV, BTV and Leptospira spp. It was performed by chi-square and also through correspondence analysis. The prevalence of herds was 77.91% for BoHV-1; 76.74% to BVDV; 100% for the BTV and 89.53% for Leptospira spp. Among the serovars of Leptospira spp. the Wolffi was the most prevalent in herds. There was an association between herd size with positive herds for BVDV and Leptospira spp. Animals older aged than 12 months to 24 months had a higher association with seropositivity for BoHV-1, BVDV and Leptospira spp. Spatial analysis there was no formation of positive herds clusters. The results indicate that the BoHV-1, BVDV, BTV, and Leptospira spp. They are widely distributed in beef cattle herds, high animal movement, the state of Maranhão.