Effects of sub-lethal concentrations of copper and lead
on hematocrit and mean cell volume (MCV) levels and on
erythrocyte numbers, erythrocyte and erythrocyte nucleus
areas were determined after exposing Oreochromis niloticus to 4 ppm Cu and 0.2 ppm Pb over 7, 15 and 30 days.
Micro-hematocrit methods were adopted in determining hematocrit levels and microscopic methods were used
to determine MCV, erythrocyte numbers, erythrocyte and
erythrocyte nucleus areas.
Hematocrit and MCV levels and erythrocyte and nucleus areas increased significantly (P