The studies were carried on 164 calves. The extensity and intensity of the Coccidia infection were determined by means of the Willis-Schlaaf’s and McMaster’s methods. The presence of Cryptosporidium sp. was determined by Ziehl-Neelsen staining technique. Whereas the Coccidia composition in the examined animals was determined upon the morphological features of the oocysts and the sporulation time. The following four Eimeria species were isolated in E. bovis, E. aubernensis, E. zürni and E. cylindrica. In calves, the overall prevalence Eimeria sp. was 21.34% and Cryptosporidium sp. 6.70%.

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