Myelitis associated with protozoal infection in newborn calves.
Four newborn calves from different herds were examined because of recumbency and inability to rise. Abnormal physical findings were confined to the nervous and/or musculoskeletal systems. Because of poor prognosis, all calves were euthanatized and necropsied. The histopathologic findings were multifocal lymphocytic myelitis, meningitis, and encephalitis associated with protozoal cysts.
Department of Veterinary Clinical Medicine and Surgery, College of Veterinary Medicine, Washington State University, Pullman 99164.
S M
SM
Parish
L
L
Maag-Miller
T E
TE
Besser
J P
JP
Weidner
T
T
McElwain
D P
DP
Knowles
C W
CW
Leathers
D000818:Animals; D000831:Animals, Newborn; D002417:Cattle; D002418:Cattle Diseases / Q000209:etiology*; D009187:Myelitis / Q000209:etiology / Q000662:veterinary*; D011528:Protozoan Infections / Q000150:complications; D011529:Protozoan Infections, Animal