Trypanosoma (Dutonella) vivax (Ziemann, 1905) em bovinos das diferentes mesorregiões do Estado de Pernambuco, Brasil

Abstract

Trypanosoma vivax determines losses in production of ruminants related to morbidity, decline in production, reproductive problems and also mortality. The objective of this study was to determine the diagnosis of Trypanosoma (Dutonella) vivax in cattle of different regions of Pernambuco State, Brazil, through the techniques of Indirect Immunofluorescence Assay (IFA) and Polymerase Chain Reaction (PCR). Firstly, it was performed a serology of 2,053 serum samples from bovine herds from different counties in the state of Pernambuco. From these results the counties with the highest frequency by IFA test were selected and a total of 127 bovine blood samples were collected for molecular analysis by PCR. The results of IFAT showed 13.93% (286/2,053) of positive animals for IgG antibodies against Trypanosoma vivax. The amplification by PCR revealed positivity of 44.88% (57/127). These results suggest that Pernambuco state is an area endemic for Trypanosoma vivax being considered an enzootic instability area. On the other hand, PCR was effective in the diagnosis of Trypanosoma vivax in cattle blood, being an indispensable tool for studies epidemiological.