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Journal of Fisheries International
Year: 2008  |  Volume: 3  |  Issue: 3  |  Page No.: 65 - 67

Sub-Lethal Effect of 2,4-Dichlorophenoxy-Acetic Acid on Growth and Food Utilization of the African Cat Fish Clarias gariepinus (Teugals)

S.M. Shallangwa and J. Auta    

Abstract: The effect of sub-lethal concentrations 2.89, 3.62 and 4.83 mg L-1 of 2,4-Dichlorophenoxy-acetic acid (Cereal herbicide) on growth, nutrient and body composition of Clarias gariepinus were studied in the laboratory. The growth rates were sgnificantly reduced in fish exposed to the toxicant compared with the control groups. The nutrient utilization showed that, SGR, FCR, FCE, FE, PER and NM were significantly higher (p<0.05) in the control fish than the exposed groups. The investigation revealed that, low concentration of 2,4-D causes various physiological effects to the fish. The usage of this herbicide near water bodies where fish abound should be monitored and controlled.

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