[Eimeria leuckarti infections in foals and their mothers in upper Bavaria].

The research investigates the prevalence of Eimeria leuckarti infections in foals and their mothers in Upper Bavaria, revealing a significant discrepancy between the two groups and shedding light on the patterns of disease transmission.

Study Design and Scope

• The study is an epidemiological research, focusing on understanding patterns and causes of health and disease in a particular population—30 mares and their foals in Upper Bavaria.
• The investigation centers on the presence and transmission of Eimeria leuckarti oocysts, a type of protozoan parasite generally found in the small intestine of horses.
• Out of the seven farms from where the sample was collected, the focus was on tracking parasite prevalence from the time right after birth (post partum).

Findings and Observations

• The study found Eimeria leuckarti oocysts in 24 out of 30 foals (80%) while only one mare was found infected, indicating a higher propensity for infection among younger horses.
• The earliest observation of oocysts was 28 days post partum, while the latest was 191 days post partum. This provided the researchers with an understanding of the infection timeline.
• In affected foals, the shedding of oocysts did not happen continuously but intermittently, showing coproscopically negative intervals that lasted up to 15 weeks. This suggests that the excretion and hence, potential spread of the parasite, could occur in spurts rather than uniformly, posing challenges for disease control.
• The most frequent instances of oocyst-shedding occurred in the summer months of June, July, and August, implying that infection rates could be seasonal.
• Interestingly, except for two foals that showed symptoms of mild diarrhea, the rest of the infected foals did not exhibit any evident clinical signs. This reinforces the often asymptomatic nature of Eimeria leuckarti infection.

This research provides important insights into the occurrence and transmission trends of Eimeria leuckarti infections among equine populations in Upper Bavaria and forms a basis for further studies or interventions to prevent and control this parasite-related disease.