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Clinical neosporosis in a 4-week-old Hereford calf
J P Dubey1, E B Janovitz, A J Skowronek
1Zoonotic Diseases Laboratory, Livestock and Poultry Sciences Institute, ARS USDA, Beltsville, MD 20705-2350.
Veterinary Parasitology
|June 1, 1992
Abstract:
Most reports of neosporosis associated with abortion in cattle are in dairy cattle and infected calves do not survive beyond 7 days of age. This paper reports neosporosis in a 4-week-old Hereford calf. The calf was full term and appeared clinically normal at birth. At 2 weeks of age, the calf had weakened and was unable to nurse unassisted. The calf was killed at 4 weeks because of paralysis. The primary lesions were in the brain and were associated with Neospora caninum tachyzoites. The diagnosis was confirmed by immunohistochemical staining with anti-Neospora rabbit serum.