Eimeria leuckarti infections in three foals.

The research article discusses the occurrence of Eimeria leuckarti infections, a type of intestinal parasite, in three foals. The study aims to investigate the pathogenicity of this parasite and whether it could be a potential cause for diarrhoea in horses.

Background of the Research

• The paper begins by providing a background of Eimeria Ieuckurti, which is recognized as a parasitic protozoa that infests the intestinal mucosa of horses. This parasite has been discovered worldwide but is reported rarely in Australia.
• Furthermore, the study references two other coccidia species found in horses, E solipedum and E uniunguluti, which are only recorded in Russia.
• The researchers point to a lack of consensus on the pathogenicity of E. Zeuckarti. Some view it as a harmless parasite, while others consider it a potential cause of diarrhea in the absence of other pathogens.

Research Methodology

• The study revolves around three cases of foals diagnosed with intestinal coccidiosis, caused by Eimeria leuckarti, which were admitted to the Rural Veterinary Centre (RVC) at the University of Sydney.
• During the investigation, a necropsy was performed on the foals, during which all tissue samples were routinely set in 10% buffered formalin for preservation.
• The samples were later embedded, thinly sectioned (5 to 6 µm), and subjected to a staining process using haematoxylin and eosin – a common staining technique utilized in histology to distinguish cellular components.
• Finally, these sectioned and stained samples were examined under a microscope at 100x and 400x magnification for stages of E leuckarti based on Barker and Remmler’s criteria from 1972.

Significance of the Study

• By studying these three cases, the researchers aim to provide a more substantial basis for understanding the role and potential pathogenicity of Eimeria leuckarti in hooved animals, particularly horses.
• This could help in the medical treatment and preventive measures for such parasitic infections and possibly alleviate diarrheal conditions in horses worldwide.