Pathogenicity of Leucocytozoon caulleryi for specific pathogen-free laying hens.
The pathogenicity of Leucocytozoon caulleryi against specific-pathogen-free laying hens was investigated. Many large schizonts (second-generation schizonts) of L. caulleryi were seen in the ovary and oviducts of chickens. Edema and pressure atrophy of the adjacent tissues were associated with these schizonts. The eggshell-secreting portion of the uterus exhibited the most severe damage in the oviduct. This experiment reconfirms that L. caulleryi may stop egg production in laying hens, presumably as a result of damage to ovaries and oviducts.
Nakamura
K
K
National Institute of Animal Health, Tsukuba, Ibaraki, Japan.
Ogiso
M
M
Shibahara
T
T
Kasuga
H
H
Isobe
T
T
D000818:Animals; D000913:Antibodies, Protozoan / Q000097:blood; D016782:Apicomplexa / Q000254:growth & development / Q000472:pathogenicity*; D002645:Chickens; D005260:Female; D006651:Histocytochemistry / Q000662:veterinary; D010053:Ovary / Q000469:parasitology / Q000473:pathology; D010058:Oviposition; D011201:Poultry Diseases / Q000469:parasitology* / Q000473:pathology; D011233:Precipitin Tests / Q000662:veterinary; D011529:Protozoan Infections, Animal / Q000097:blood / Q000469:parasitology* / Q000473:pathology; D013047:Specific Pathogen-Free Organisms; D014599:Uterus / Q000469:parasitology / Q000473:pathology
D000913:Antibodies, Protozoan