[Pathological study on central nervous system in Iranian cattle and buffaloes: a provincial study]

ABSTRACT

Evaluation of clinical signs and pathological lesions could be very important for recognition of nervous system diseases in cattle and buffaloes. This study was carried out to understand the nature of pathological conditions affecting brain of cattle and buffaloes in an abattoir study. 46 samples out of 850 samples [37 cattle, 9 buffaloes] which showed various macroscopic lesions were collected for detailed examination. The specimens were ginned processed through routine method for paraffin embedding section [5-7micron], stained by haematoxilyin and eosin method. Congestion and hemorrhage [8 cows, 9 buffaloes]; pigmentation [4 cows]; chromatolysis [4 cows, 2 buffaloes]; gliosis [4 cows, 1 buffalo]; vacuolization of the white matter [4 cows]; necrosis [6 cattles, 2 buffaloes]; cerebellum edema [3 cows]; perivascular cuffing [4 cows, 3 buffaloes]; blood vessels hyperplasia [3 cows]; coenurus cerebralis [3 cows]; encephalitis [9 cattle, 1 buffalo]; mineralization [5 cows]; meningeal hemorrhage and congestion [10 cows, 9 buffaloes]; meningeal edema [2 cows]; meningitis [7 cows]; cerebral congestion and hemorrhage [1cow, 5 buffaloes]; degeneration of molecular layer [2 cows]; degeneration of granular layer [3 cows] Purkinje cells degeneration [cows 4, 1 buffalo]. Multiple lesions in the central nervous system have been observed in apparently healthy animals without clinical signs. Considering the importance of ruminants encephalopathy and comparing these results can be a basis for further study