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Updated: Jul 2, 2026
08:26
Nucleofection and In Vivo Propagation of Chicken Eimeria Parasites
Published on: February 14, 2020
Cryptosporidial infection in chickens.
C Itakura1, M Goryo, T Umemura
1Department of Veterinary Pathology, Faculty of Agriculture, Tottori University, Koyama, Tottori, Japan.
Avian Pathology : Journal of the W.V.P.A
|July 1, 1984
Summary
Cryptosporidial infection affects chickens, primarily the bursa of Fabricius and respiratory tract. This study details the parasite
Area of Science:
- Veterinary Pathology
- Parasitology
- Poultry Health
Background:
- Cryptosporidial infections are emerging concerns in poultry farming.
- Previous reports have documented Cryptosporidium in various animal species and humans.
Purpose of the Study:
- To investigate the prevalence and pathological effects of Cryptosporidium in layer and broiler chickens.
- To identify the primary tissues affected by the infection and characterize the host-parasite interactions.
Main Methods:
- Histological and electron microscopic examination of affected chicken tissues.
- Epidemiological data collection from multiple poultry farms.
Main Results:
- Cryptosporidium was identified in 25% of layer and broiler chickens across 11 flocks.
- The bursa of Fabricius (85%) and respiratory tract (41%) were most frequently infected.
- Histological changes included epithelial cell hypertrophy and hyperplasia, with significant tracheal alterations.
Conclusions:
- Cryptosporidium infections are prevalent in commercial chickens, affecting key organs.
- The parasite causes significant pathological changes, particularly in the respiratory system, suggesting it as a primary cause of respiratory disease in poultry.
- Further research into control and treatment strategies is warranted.
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