| Tetratrichomonas | A genus of parasitic protozoan flagellates, formerly part of the genus Trichomonas but now separated into a distinct genus by the presence of four anterior and one trailing flagella, a pelta, and a disc-shaped parabasal body. See: Trichomonas. Origin: tetra-+ Trichomonas Tetratrichomonas ovis, a species that occurs in the caecum or rumen of domestic sheep. (05 Mar 2000) |
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| Anaplasma ovis | A species that causes anaplasmosis in sheep and goats; cattle are refractory. (05 Mar 2000) |
| Babesia ovis | Species described from sheep and goats in many tropical and subtropical areas of the eastern hemisphere as a cause of icterohematuria; it is smaller and less pathogenic than Babesia motasi, and immunologically distinct. (05 Mar 2000) |
| Mycoplasma conjunctivae subsp. ovis | A bacterial subspecies associated with pinkeye of sheep. (05 Mar 2000) |
| Corynebacterium ovis | <bacteria> Former name for Corynebacterium pseudotuberculosis. (05 Mar 2000) |
| Taenia ovis | A tapeworm of dogs and foxes whose larval form is found in the muscles of sheep; heavy larval infections in sheep can have severe economic consequences due to condemnation of carcasses at meat inspection. (05 Mar 2000) |
| Eperythrozoon ovis | A species found in sheep, rarely causing disease. (05 Mar 2000) |
| Trichomonas ovis | Former name for Tetratrichomonas ovis. (05 Mar 2000) |