Comparative Effects of Clove Oil and 2-phenoxyl ethanol on the Anaesthetic and Haematological Properties of Clarias gariepinus Juveniles

• O. M. Popoola

  Department of Fisheries and Aquaculture Technology, The Federal University of Technology, P.M.B 704, Akure, Nigeria

  Author

This study was carried out to determine the effect of two anaesthetic agents; clove oil and 2-phenoxyethanol on Clarias gariepinus juvenile. Clove oil was mixed with ethanol in ratio 1:1, to aid its solubility in water. Also, 5gm of 2phenoxyethanol was mixed with 5ml ethanol to make it miscible in water. A total of 240 juvenile were used, sixty fishes were anaesthetized at different concentration of clove oil (0, 0.5, 1.0, 1.5, 2.0, 2.5ml/l) and another sixty anaesthetized at different concentration of 2-phenoxyethanol (0, 1.0, 1.5, 2.0, 2.5, 3.0 mg/l). The physio-chemical properties of water and haematological parameters of fish exposed to anaesthetics were measured to know the effects of the anaesthetic agents on the test fish blood. Single factor analysis of variance (ANOVA) was used to analyze the variables studied. The induction time decreased with increased concentration while the recovery time increased with increasing concentration. The effective concentration that gives induction in 194.50± 20.51s and recovery time in 298.00±7.07s for clove oil with no mortality was 2.0ml. Also, 2.5 ml of 2-phenoxyethanol gives 185.00±35.36s induction time and recovery time of 295.00±42.43s. The result shows significant difference (p<0.05) in haematological variables across the samples. From the experiment, increase in the concentration of these agents decrease the level of PCV, RBC and Hb while the level of WBC increases with increasing concentration. In conclusion, clove oil is the most suitable agent for juvenile African catfish when compared 2phenoxyethanol based on the quicker induction and recovery time when clove oil was administered.

1. O. M. Popoola, Department of Fisheries and Aquaculture Technology, The Federal University of Technology, P.M.B 704, Akure, Nigeria

   Department of Fisheries and Aquaculture Technology, The Federal University of Technology, P.M.B 704, Akure, Nigeria

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