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A comparison of two laboratory strains of Eimeria tenella

Published online by Cambridge University Press:  06 April 2009

L. P. Joyner  and
C. C. Norton
L. P. Joyner
Affiliation:
Central Veterinary Laboratory, Ministry of Agriculture, Fisheries and Food, Weybridge, Surrey
C. C. Norton
Affiliation:
Central Veterinary Laboratory, Ministry of Agriculture, Fisheries and Food, Weybridge, Surrey
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Extract

Two strains of E. tenella (Weybridge and Houghton), which have been maintained by laboratory passage for at least 20 years without exposure to drugs, were compared.

Oocyst dimensions and morphology were similar and cross-protection experiments showed that the strains could not be distinguished immunologically.

One strain (Weybridge) caused greater caecal haemorrhage than the other when small doses of oocysts were given and was less completely controlled by some quinoline and pyridine drugs.

Acknowledgements are due to Dr M. E. Rose of the Houghton Poultry Research Station who kindly made the Houghton strain of E. tenella available to us with details of its maintenance.

The statistical calculations were made by Miss C. N. Hebert.

Type
Research Article
Information
Parasitology , Volume 59 , Issue 4 , November 1969 , pp. 907 - 913
Copyright
Copyright © Cambridge University Press 1969

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References

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