Neospora-like protozoan infection as a major cause of abortion in California dairy cattle.
Ninety-five aborted bovine fetuses received from California dairies over a 4.5-year period had histologic lesions of focal encephalitis. Protozoa that reacted with Neospora caninum antiserum were detected in the brain of 88 of these fetuses and in the heart of 1 fetus. Sarcocystis spp schizonts were seen in the vascular endothelium of 1 fetus. It was concluded that a Neospora-like cyst-forming coccidian may be a major cause of abortion in California dairy cattle.
Anderson
M L
ML
California Veterinary Diagnostic Laboratory System, University of California, Davis.
Blanchard
P C
PC
Barr
B C
BC
Dubey
J P
JP
Hoffman
R L
RL
Conrad
P A
PA
D000034:Abortion, Veterinary / Q000209:etiology*; D000818:Animals; D001921:Brain / Q000196:embryology / Q000469:parasitology* / Q000473:pathology; D002140:California; D002417:Cattle; D002418:Cattle Diseases / Q000209:etiology*; D056890:Eukaryota / Q000302:isolation & purification*; D005260:Female; D005865:Gestational Age; D007124:Immunoenzyme Techniques; D007150:Immunohistochemistry; D011247:Pregnancy; D011528:Protozoan Infections / Q000150:complications; D011529:Protozoan Infections, Animal