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Immunity to coccidiosis: maternal transfer in Eimeria maxima infections

Published online by Cambridge University Press:  06 April 2009

M. Elaine Rose
M. Elaine Rose
Affiliation:
Houghton Poultry Research Station, Houghton, Huntingdon
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Extract

Chicks hatched from eggs laid in the third and fourth weeks after inoculation of the hens with oocysts of E. maxima excreted fewer oocysts in response to a challenge inoculum of E. maxima given at 1 week of age than controls hatched from the eggs of uninfected hens. A λ-livetin fraction prepared from the yolks of eggs laid by hens 14–22 days after a single inoculation of oocysts of E. maxima and injected subcutaneously into 2-week-old chicks caused a similar reduction in oocyst yield from a challenge inoculum. The serum of the donor hens, obtained at the corresponding time intervals was protective. These results confirm that immunity to infection with E. maxima is, at least in part, mediated by humoral antibodies.

Type
Research Article
Information
Parasitology , Volume 65 , Issue 2 , October 1972 , pp. 273 - 282
Copyright
Copyright © Cambridge University Press 1972

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