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Variation in susceptibility of inbred lines of chickens to seven species of Eimeria

Published online by Cambridge University Press:  06 April 2009

N. Bumstead  and
B. J. Millard
N. Bumstead
Affiliation:
AFRC Institute for Animal Health, Houghton Laboratory, Houghton, Huntingdon, Cambs PE17 2DA
B. J. Millard
Affiliation:
AFRC Institute for Animal Health, Houghton Laboratory, Houghton, Huntingdon, Cambs PE17 2DA
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Extract

The pattern of oocyst production of 8 inbred lines of chickens was compared for each of the 7 species of Eimeria which infect this host. Both the overall numbers and the pattern of oocyst production differed in the inbred lines, but there was no evidence of prolonged cycling of schizogenic developmental stages. Comparison of the numbers of oocysts produced by the different lines indicates that there may be common genetic factors affecting susceptibility to 6 of the 7 species. Surprisingly there appears to be an inverse relationship between susceptibility to E. tenella and susceptibility to the other species: lines which produced most oocysts of E. tenella produced least oocysts of the other species and vice-versa.

Keywords

EimeriaCoccidiacoccidiosischickensgenetic resistanceoocyst production.
Type
Research Article
Information
Parasitology , Volume 104 , Issue 3 , June 1992 , pp. 407 - 413
Copyright
Copyright © Cambridge University Press 1992

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