COMPARISON OF INDIRECT IMMUNOFLUORESCENT ANTIBODY-TEST AND MODIFIED DIRECT AGGLUTINATION-TEST METHODS FOR DETECTION OF TOXOPLASMA-GONDII ANTIBODIES IN ADULT SHEEP IN SPAIN

A total of 2306 serum samples obtained from adult sheep were analysed for Toxplasma gongii IgG antibodies by modified direct agglutination t est and indirect immunofluorescence assay test. Similar results were o btained with both procedures (seroprevalence of 35.27% for modified di rect agglutination test and 33.72% for indirect immunofluorescence ass ay test at dilution 1:80), but some differences in relation to sample dilution were registered. All the titers assayed (dilution two-fold fr om 1:40 to 1:320) can be used in diagnosis with both procedures, but t iters 1:80 are recommended for screening studies in ovine flocks.