Sorologia de tristeza parasitária em bovinos de leite na região sudoeste do Paraná

Abstract

The parasitic sickness is a complex of two different deseases, the Anaplasmosis and Bovine babesiosis, but with similar clinical signs and epidemiology. The Anaplasmosis is caused by rickettsia Anaplasma marginale and the Bovine babesiosis is caused by protozoan Babesia bovis and Babesia bigemina, which cause high economic losses. To determine the seroprevalence of parasitic sickness in the southwestern Paraná region, were harvested 105 blood samples, being that 90 were analyzed by means of linked immunosorbent assay indirect enzyme (iELISA) to A. marginale, B. bovis and B. bigemina. In addition, 61 blood samples were evaluated by polymerase chain reaction by PCR for A. marginale. During blood hearvest, the animals were evaluated for the presence of ticks. The results were evaluated by descriptive analysis. They showed that, 71,1% (64/90), 95,5% (86/90) and 96,6% (87/90) of animals tested were positive for A. marginale, B. bovis e B. Bigemina, respectively. The results obtained by PCR, showed that 32.79% (20/61) of the animals were positive for A. marginale. At the time of blood hearvest 44,5% of the animals had ticks (40/90). The appropriate knowledge at the seroprevalence of parasitic sickness in the region, it is important to program control techniques and prophylaxis of the disease.