Prevalencia de parásitos hematrópicos endoglobulares en bovinos gyr puros en Córdoba, Colombia

Bovine parasitic sadness produces significant losses in Colombia and it is associated with the presence of ticks. It is caused by microscopic endoglobular hemotropic parasites such as Anaplasma spp. and Babesia spp. In this study, 131 pure Gyr cows were studied from four cattle farms in Cordoba, Colombia. A blood sample of 5 ml was collected from the coccygeal vein for hematocrit determination and for blood smears stained with Wright’s stain, in order to assess intracellular parasitic forms morphologically compatible with Anaplasma spp. and Babesia spp. Chi-square test was used to determine whether the variables of body condition, mucous color, sex and production system (grazing, semi-confinement, and confinement) were independent from the frequency of endoglobular hemotropic parasites. The study found that 24.43% of the sampled animals were positive for endoglobular hemotropic parasites; 20.61% (27/131) of them were positive for Anaplasma spp.; 3.05% (4/131) for Babesia spp., and 0.76% (1/131) for both Anaplasma spp. and Babesia spp. No significant differences (p > 0.05) were found for variables of mucous color, sex and production system (grazing, semi-confinement, and confinement). This allowed to register for the first time the prevalence of infection by endoglobular hemotropic parasites in Bos indicus cattle, of the Gyr breed specifically.