Coccidia (Protozoa : Eimeriidae) of Domestic Sheep in the United States, with Descriptions of the Sporulated Oocysts of Six Species

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Abstract
Detailed descriptions are given of the sporulated oocysts of the following coccidia from domestic sheep: Eimeria granulosa Chrlstensen, 1938; E. intricata Spiegl, 1925; E. ninakohlyakimovae Yakimoff and Raste-gaieff, 1930; E. pallida Christensen, 1938; E. punctata Landers, 1955; and Isospora sp. This is the first report of Isospora from sheep; it resembles I. lacazei of English sparrows, and may not be a true parasite of sheep. In a survey of 153 apparently healthy sheep, mostly from Illinois, 69% were found to have coccidian oocysts in their feces; 24% had E. ahsata, 53% had E. arloingi, 24% had E. crandallis, 6% had E. faurei, 4% had E. granulosa, 7% had E. intricata, 1% had E. ninakohlyakimovae, 6% had E. pallida, 5% had E. parva, 1% had E. punctata, and 1% had Isospora sp..

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