engleski

Species identification and prevalence of Eimeria spp. coccidial parasites in sheep from the North Dalmatia (Croatia)

Summary A reliable epidemiological data regarding the prevalence and species differentiation of coccidian parasites in sheep-farming operations in the North Dalmatia (Croatia) is lacking. The aim of this study was to collected the data and analyze the epidemiological status of ovine coccidiosis in this coastal region of Croatia, and to identify the species involved. Fecal analysis revealed the presence of the coccidian parasites of the genus Eimeria in four sheep flocks farmed in the Zadar County (North Dalmatia - Croatia). Species differentiation identified 9 different Eimeria species. Of the highly pathogenic species, E. crandallis was found in three sheep flocks, and E. ovinoidalis was present in one. Among the other pathogenic coccidial organisms, E. parva and E. faurei were found in two herds, while E. bakunensis was found in one. Non-pathogenic species identified included E. granulosa, E. intricata, E. marsica, and E. pallida. The fecal analysis also revealed a combined presence of five different Eimeria species in two herds, and four different species in other two herds. The epidemiological analysis of 49 lambs indicated that 75.5% of them were shedding coccidian oocysts in feces. Our results show a high prevalence of several different Eimeria spp. in sheep flocks farmed in the North Dalmatia. The presence of several pathogenic species raises a concern for development of clinical coccidiosis in large number of lambs and its potential economic impact for the farmer. These data indicate a need to develop appropriate antiparasitic control programs applicable to the sheep farming practices specific for this Mediterranean region.

coccidia; Eimeria spp.; sheep; coastal Croatia

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