Abstract
The role of first- and second-generation schizonts in acquired immunity toLeucocytozoon caulleryi in chickens was studied. The chickens, which had recovered from a primary infection with various doses of sporozoites at 22–95 days of age, were challenged with sporozoites. First-generation merozoites were found in all of the challenged chickens, but no second-generation merozoites and gametocytes were seen in 30 of 32 chickens challenged with sporozoites. Almost all of the chickens that had recovered from a primary infection with sporozoites showed complete resistance to reinfection, and those that had recovered from a primary infection with first-generation merozoites showed resistance to reinfection with sporozoites. These results indicate that the second-generation schizont ofL. caulleryi appears to be more immunogenic than the first-generation schizont and that some immune factors acquired by the chickens in the second generation of schizogony may inhibit the development of second-generation schizonts.
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Presented as paper during the 6th Japanese-German Cooperative Symposium on Protozoan Diseases, München, September 21–25, 1987
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Morii, T., Matsui, T., Kobayashi, F. et al. Some aspects ofLeucocytozoon caulleryi reinfection in chickens. Parasitol Res 75, 194–198 (1989). https://doi.org/10.1007/BF00931275
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DOI: https://doi.org/10.1007/BF00931275