Abstract
The present study was carried out to investigate the haematological and biochemical parameters in healthy and ulcerated Catfish, Clarias batrachus. The haemorrhagic necrotic skin lesions in ulcerated fishes showed significant reduction (P<0.01) in RBC, haemoglobin, haematocrit (PCV) eosinophils and lymphocytes. The derived erythrocyte indices, namely, the MCV, MCH and MCHC of ulcerated fishes were also significantly decreased (P < 0.05) from those of normal fishes. Whereas, the total leucocyte count (TLC), neutrophils, monocytes and ESR were significantly increased (P<0.01 and P<0.05) in infected fishes. The biochemical analysis showed a significant reduction (P<0.01) in bilirubin content, whereas the blood glucose, SGOT and SGPT were significantly increased (P<0.01).
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