Department of Zoology, B.N. Mandal University, Madhepura, Bihar, India.
Received : 21st June, 2018 ; Revised :28th August, 2018
Abstract: The effects of two commonly used fertilizers, diammonium phosphate and urea, on hematological parameters (hemoglobin, red blood cell count, ESR, PCV and total leucocytes count) of air breathing fish Anabas testudineus (Bloch) were studied. The toxic effect of diammonium phosphate was more pronounced than that of urea. The toxic effect of diammonium phosphate resulted in a sudden fall of hematological parameters—Hb, RBC count, ESR, PCV—at higher concentrations, and at lower concentrations gradual decreases were seen over comparatively longer durations. In urea intoxication, slight decreases in the three parameters were seen at lower concentrations during shorter intervals, while at higher concentrations, significant decreases during shorter intervals were observed. Total Leucocytes Count (TLC) increased during toxicity with both fertilizers, but higher elevations in TLC were produced by diammonium phosphate than by urea.