Anticorpos contra Leptospira spp. e Brucella spp. em equiídeos da região Sul do Brasil abatidos em matadouro-frigorífico

• Autor(a) principal: Santos, Renata Bossolani Ferreira dos [UNESP]
• Data de Publicação: 2014
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://hdl.handle.net/11449/110619
• topic: Equino; Equino - Doenças; Brucelose; Leptospirose em animais; Imunoglobulinas; Matadouros; Leptospirosis in animals

The goal of this study was to investigate the presence of antibodies against Leptospira spp. and Brucella spp. in sera samples of horses slaughtered in an abattooir, under the Brazilian federal food inspection service, located in the south region of Brazil. Serum samples from 767 adult horses, males (n = 407) and females (n = 360) slaughtered from April to May 2013, were analyzed. The animals came from 45 municipalities in the states of Rio Grande do Sul, Santa Catarina and Paraná. The microscopic agglutination test (MAT) was used for the diagnosis of leptospirosis. For brucellosis diagnosis, the rose bengal plate test (RBPT) was used as screening, and fluorescence polarization assay (FPA), reaction complement fixation (CFR) and 2-mercaptoethanol (2-ME) were used as confirmatory tests. Seropositivity was observed in 687 (89.57%; 95% CI: 87.41 % - 91.73 %) horses, that had antibodies to at least one of the 24 serovars of Leptospira spp. at a titer greater than or equal to 100. The predominant serovars were Patoc (56.71%), Bratislava (50.07%), Butembo (39.11%) and Icterohemorrhagiae (33.38%). There was no significant difference (p = 0.2795) between the proportions of reactors to Leptospira spp. in the states. Regarding the proportion of males and females reagents, the difference was highly significant (p = 5.4444 x 10-5); 85.26% (95% CI: 82.82% - 88.70%) of the males and 94.44% (95% CI: 92.07% - 96.81%) of the females tested positive to Leptospira. In the RBPT, 65 (8.47%) animals tested positive, and only two (3.07 %) of them were also positive in CFR and three (4.62%) were positive in FPA. The results obtained in this study show a high exposure of the horses to several serovars of Leptospira. Despite the low frequency of animals positive for Brucella spp., it can be said that the infection in horses is present in the study area, what is demonstrated by the presence of reacting animals. Regarding ...