HAEMATOLOGICAL AND BIOCHEMICAL EFFECTS OF TEXTILE-MILL EFFLUENT ON THE FRESHWATER FISH OREOCHROMIS MOSSAMBICUS (TREWAVES)

O. mossambicus were exposed to sublethal concentrations (0.52%, 0.74%, 1.3% and 2.6%) of mixed textile-mill effluent to study the haematological and biochemical changes as a function of effluent concentration anಣ್ಣಿ exposure duration Incrಳ್ವSe in concentration, prodyced a dose ಹೆಣ್ಣpenಿಜ್ಡmt elevation in RBCs (2.26 X 10/mm to 387 X 10/mm), WBCs (1.13 X 10/mm to 1.19 X 10/mm), haemoglobin (8.70 g% to 1240 g%) and a decrease in mean corpuscular haemoglobin (37.9 to 32.0 pg). Irrespective of the exposure duration, increase in concentration caused decrement in carbohydrate (2.32 to 1.24%), protein (63.8 to 59.6%), fat (8.7 to 7.6%) and ash (23.3 to 21.1%) contents. Statistical analysis confirmed that both effluent concentration and exposure duration exerted a significant influence on haematological and biochemical parameters.