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Pathogenesis of Reduced Egg Production and Soft-Shelled Eggs in Laying Hens Associated with Leucocytozoon caulleryi Infection

Kikuyasu Nakamura, Yoshiro Mitarai, Nobuhiko Tanimura, Hiroshi Hara, Akio Ikeda, Jun Shimada and Takashi Isobe
The Journal of Parasitology
Vol. 83, No. 2 (Apr., 1997), pp. 325-327
DOI: 10.2307/3284467
Stable URL: http://www.jstor.org/stable/3284467
Page Count: 3
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Pathogenesis of Reduced Egg Production and Soft-Shelled Eggs in Laying Hens Associated with Leucocytozoon caulleryi Infection
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Abstract

The pathogenesis of reduced egg production with soft-shelled eggs in laying hens naturally infected with Leucocytozoon caulleryi was investigated. Many large schizonts of L. caulleryi schizonts were seen in the ovary and oviducts of chickens. Granulomatous and lymphocytic inflammation, edema, and pressure atrophy were associated with these schizonts. The uterine region that secretes the egg shell exhibited the most severe damage. These lesions in the reproductive organs may explain the mechanism for causing the reduced egg production and soft-shelled eggs in laying hens infected with L. caulleryi.

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