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Experimental infections of the domestic fowl with a variant of Eimeria praecox from the Ceylon jungle fowl

Published online by Cambridge University Press:  06 April 2009

P. L. Long ,
M. A. Fernando  and
O. Remmler
P. L. Long
Affiliation:
Houghton Poultry Research Station, Houghton, Huntingdon
M. A. Fernando
Affiliation:
Department of Pathology, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada
O. Remmler
Affiliation:
Department of Pathology, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada
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Extract

A species of Eimeria from the Ceylon jungle fowl (Gallus lafayetti), at first thought to be a new species of Eimeria, has been identified as a strain of E. praecox. Oocysts of this jungle fowl strain were slightly larger than those of E. praecox, being 23·2 × 19·9 μm, but the endogenous stages were similar. The strain reproduced poorly in the domestic fowl but oocyst production was improved by treating the chickens with beta-methasone. A single infection of chickens with the strain of jungle fowl origin protected against challenge with the original culture and E. praecox, but did not cross-protect against E. acervulina. The name E. praecox var. ceylonensis is proposed for this strain of Eimeria.

The criteria used to identify new species of Eimeria are discussed.

Type
Research Article
Information
Parasitology , Volume 69 , Issue 1 , August 1974 , pp. 1 - 9
Copyright
Copyright © Cambridge University Press 1974

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References

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