Abstract

IMPACT OF DAIRY INDUSTRY EFFLUENT ON FRESH WATER FISH CATLA CATLA

K. Amutha* and S. Krishnaveni

Abstract

An investigation was carried out to assess the dairy industry effluent on fresh water fish Catla catla. The physiological and biochemical changes in Catla catla after exposure to sublethal concentrations of the dairy industry effluent have been investigated for the period of 21 days. Two different concentrations of dairy industry effluents were used to carry out the experiment viz 25 cm3/dm3 and 50 cm3/dm3. The results of physiological and biochemical changes in muscles and blood of Catla catla showed that, fish were under considerable stress during the exposure periods to the sublethal doses. The results obtained in the present study showed that, the industrial effluents from dairy caused marked depletion in the biochemical composition of muscles and blood parameters of fish Catla catla after the exposure period. The biochemical changes, protein, lipid and carbohydrate were recorded.

Keywords: Dairy industry effluent, toxicity of fishes, Catla catla, Physiological response, Biochemical changes.