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Eimeria leuckarti infection in foals

M Sutoh, Y Saheki, R Ishitani

    National Institute of Animal Health Quarterly
    |January 1, 1976
    PubMed
    Summary

    This study reports the first findings of Eimeria leuckarti infection in Japanese foals. The protozoa were identified in the small intestine of all seven infected foals, with various developmental stages observed.

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    Area of Science:

    • Veterinary Parasitology
    • Equine Health
    • Protozoology

    Background:

    • Eimeria leuckarti is a protozoan parasite known to infect equids.
    • Information on Eimeria leuckarti infections in foals in Japan is limited.
    • Foals are particularly vulnerable to parasitic infections due to their developing immune systems.

    Purpose of the Study:

    • To document the occurrence and pathological findings of Eimeria leuckarti infection in foals in Japan.
    • To describe the location and stages of Eimeria leuckarti within the host tissues.
    • To provide baseline data for future research on equine protozoal diseases in the region.

    Main Methods:

    • Necropsy and histopathological examination of seven foals (Thoroughbred or Angloarabian, 2-7 months old) from Hokkaido, Japan, examined between 1970 and 1973.
    • Microscopic identification of protozoa in tissue samples from the small intestine.
    • Observation of various life cycle stages of the parasite within host cells.

    Main Results:

    • Eimeria leuckarti was identified in the small intestine of all seven foals.
    • Parasites were primarily located in vacuoles within monoclear cells in the lamina propria, near the villi tips.
    • Various developmental stages, including gametocytes, oocysts, and microgametocytes, were observed.
    • Infected cells showed nuclear enlargement, but minimal cellular response to the parasite.

    Conclusions:

    • This study represents the first report of Eimeria leuckarti infection in foals in Japan.
    • The findings highlight the presence of Eimeria leuckarti in Japanese equine populations.
    • Further investigation is warranted to understand the clinical significance and prevalence of this parasite in foals.

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