%0 Journal Article %T Haematological Assessment of the Nile Tilapia Oreochromis niloticus Exposed to Sublethal Concentrations of Portland Cement Powder in Solution %A Adamu Kabir Mohammed %A Audu Bala Sambo %J International Journal of Zoological Research %D 2008 %I Academic Journals Inc. %X The effects of sub lethal concentrations of Portland cement powder in solution on some haematological parameters of the Nile tilapia (Oreochromis niloticus (L.)) mean weight 8.20 0.25 g was investigated using static bioassay system for 70 days. The sub lethal concentrations used were 19.60, 9.80, 4.90, 2.45, 1.23 and 0.00 (control) mg L-1. There were significant differences (p<0.05) in the water quality parameters monitored. However, temperature did not show any significant variation (p>0.05) in both test tanks and the control. Haematological parameters examined include: Pack Cell Volume (PCV), Haemoglobin (Hgb), Total Erythrocytes Count (TEC), Total Leucocytes Count (TLC) and Erythrocyte Sedimentation Rate (ESR) which all decreased significantly (p<0.05), the decrease being proportional to the increase in the Portland cement powder in solution. %K Toxicity %K portland cement powder %K Oreochromis niloticus %K haematology %U http://docsdrive.com/pdfs/academicjournals/ijzr/2008/48-52.pdf