Studies on the effects of hemotoxic assessment on fishes

Abstract

In the present findings in which the Urea toxicity is more pronounced than Diammonium Phosphate on the fishes followed by Calcium ammonium niterate and Muriate of potash. The toxic effect of urea resulted in sudden fall of hematological parameters-Hb, RBC count, HCt at higher concentration and at lower concentration gradual decreases, in Clarias batrachus, maximum lowering of 80.11% for Hb content, 37.90% for RBC count, and 15.60% for HCt is recorded. The effect of CAN is not so pronounced as in DAP and Urea. In Clarias batrachus, maximum decrease of 24.05%, 26.68% and 34.91% below control is observed in Hb. RBC count and TLC respectively. In Clarias batrachus, at lower concentrations (5.60, 6.15, 6.70 g/l) and shorter exposures, the three parameters studied-Hb, RBC count and HCt remained almost unaffected giving an idea that fishes tolerate these concentrations of fertilizer muriate of potash.