Abstract
Prevalence of anti- Neospora caninum antibodies was measured in serum samples randomly collected from dairy (40 cows from four farms) and beef cattle (120 animals from 12 farms) from the municipality of Santarém, Pará State, Brazil, calculated by using the Win Episcope 2.0 statistical program. The presence of anti- N. caninum antibodies was determined by indirect immunofluorescence-antibody test with a cut-off value of 1:100. We found that 13 farms (81.25%) showed infection rates above 10%, which indicates widespread distribution of N. caninum in the region. The frequency per animal was 19%. No difference was observed between the prevalence values in dairy and beef animals or between farms, which was probably due to the small number of dairy farms examined. The results confirm, for the first time, the presence of anti- N. caninum antibodies in cattle from Pará State and the necessity to further investigate the epidemiology of N. caninum in the Amazon region.
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