A CASE OF THEILERIOSIS IN THE TIBETIAN YAK (P. GRUNNEUS),
Abstract
Smears taken from the dead and recovered yaks were coloured by Romanovsky-Giemsa and Leishman method but the Theileria of Tibetian yaks proved to be different from Theileria annulata; in smears rodlike, anaplasmoid, commashaped, and punctiform; the round or ringshaped forms that predominate in Theileria annalata were very rarely found. Pearshaped forms were not revealed in smears. The parasites are mononuclear. The nucleus is located in one end and becomes intensively coloured. The number of parasites in one erythrocyte is from 1 to 6, the arrangement varies. The illness observed in the Tibetian yak was provisionally named Th. grunnei as distinct from Th. annulata. Among the morphological features of Theileria, the most characteristic is predominance of bacilliform and commashaped forms over round ones. The (present) illness is distinguished for its malignancy.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1966
- Accession Number
- AD0660150
Entities
People
- M. M. Mamikonian
Organizations
- Naval Medical Research Center