Resumen de SA 08. Serumhaematological survey in bovine tripanosensitiveness of two agroecological units of Aroa valley

Espartaco Sandoval, Emir Espinoza, Nersa Gonzalez, Gustavo Adolfo Morales-Contreras, William Montilla

• This work aims at contributing to the knowledge of trypanosomosis epidemiology in bovines. In order to determine the prevalence and distribution of bovine trypanosomiasis in Aroa valley, Venezuela. Serum and blood samples from farms located in two agroecological units (U.A.) were tested by indirect inmunofluorescence and hematocrit technique respectively. In the A.U. ³Eˇ248 and ³Iˇ61 36.4 % and 40.2 % were positive reactors respectively. Results showed that trypanosomal infection is widespread throughout the two A.U. and the cattle of all ages, type of exploitation and breeds are affected, particularly Brown Swiss crossbred.