Haematological changes in a fresh water fish, anabas testudineus bloch on exposure to heavy metal toxicant cadmium chloride

The study mainly focused on the effect of different concentrations of CdCl2 on haematological parameters of freshwater fish, Anabas testudineus. Serum glucose content, haematocrit, total RBC and WBC count were measured after 7, 14 and 28 days of exposure to different concentrations of CdCl2 (2ppm, 3ppm and 4ppm). 96-h LC50 of CdCl2 was 7ppm. Levels of serum glucose content were increased after 14 and 28 days of exposure to different concentrations of CdCl2 (2ppm, 3ppm and 4ppm). The haematocrit value and RBC count were significantly reduced after 14 days of exposure to the three concentrations of CdCl2 while the leucocyte count was significantly increased with in 7 days of exposure to the middle and higher concentrations (3ppm and 4ppm).