Prevalence of piroplasmosis in equines in the Colombian province of Cordoba.

The research paper focuses on the occurrence of piroplasmosis (a disease caused by parasites) in horses in the Colombian province of Cordoba. The study examined antibodies to two specific parasites, Babesia caballi and B. equi, in 82 horse samples from 13 different farms.

Methodology

• The researchers used two diagnostic tests, the Complement Fixation (CF) and the Indirect Fluorescent Antibody (IFA) test to detect the presence of antibodies to Babesia caballi and B. equi in the horse samples.
• The prevalence of piroplasms (parasites that cause piroplasmosis) in different age groups of horses was also investigated.
• The study also took into account the presence of Anocentor nitens and Amblyomma cajennese, types of ticks that are vectors for the transmission of Babesia parasites.

Findings

• The research found that antibodies for both Babesia caballi and B. equi were present in horse populations on all of the thirteen farms studied, indicating that piroplasmosis was prevalent in these populations.
• The IFA test showed a high prevalence of 90% for B. caballi and 94% for B. equi.
• On the other hand, the CF test identified antibodies to B. caballi in 41% and to B. equi in 65% of the samples.
• An interesting age-related observation was made: there was a significant drop in CF antibodies to B. caballi in horses older than three years. Additionally, IFA titres for both Babesia species were found to decrease with the increasing age of the animals, even though they were still detected in most of the horses in the oldest age group (over nine years old).
• Upon observing the tick population, the researchers found Anocentor nitens ticks on all the participating farms. In contrast, Amblyomma cajennese ticks were only detected on two coastal farms.

Implications

• The findings reveal that there is a high prevalence of piroplasmosis in the horse populations of the surveyed farms in the Colombian province of Cordoba. Such high prevalence potentially poses significant health and economic impacts on the equine industry in the region.
• The decline of antibody prevalence with age suggests a weakening immune response in older animals. Further research could explore whether this is a result of the natural ageing process or continued exposure to the parasites.
• The data regarding the presence of ticks on the farms could be useful in directing future efforts towards controlling these vectors to prevent the spread of Babesia and, consequently, piroplasmosis.