Abstract
The biochemical assessment of the effect of crude oil polluted water on some liver enzymes of African catfish (Clarias gariepinus) was carried out. A total of 30 active (mobile) juvenile catfish of average weight of 75.33 ± 3.0g were divided into six groups of five catfish and held for 30 hour in five different crude oil contaminated aqueous solutions (0.1%, 0.25%, 0.5%, 0.75%, 1.0%). Catfish in the control group were held in borehole water. The results obtained revealed a significant reduction (p 0.05) was obtained in the initial and final weights of control catfish. In comparison to the control, the results showed a significant increase (p<0.05) in the LDH activity and a significant decrease (p<0.05) in the AST and ALT activity of the liver of catfish as the concentration of crude oil increased. The data obtained may be interpreted as a possible adverse effect of crude oil on juvenile catfish as manifested by changes in liver enzymes.
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