%0 Journal Article
%A Oranusi, S. U.
%A Dahunsi, S. O.
%D 2013
%F eprints:1958
%J Annual Review & Research in Biology
%N 4
%P 624-635
%T Haematological Response of Clarias Gariepinus  to Rubber Processing Effluent
%U http://eprints.covenantuniversity.edu.ng/1958/
%V 3
%X Industrialization has led to huge waste generation over the last decades, the absence of  adequate facilities for treating such wastes in most developing nations has led to the  discharge of effluents into the environment without proper treatment. Toxicological effects  of effluents from rubber processing plant (collected during the period of low rivertide i.e.  between October 2012 and February 2013) were carried out in this study. Lethal  concentration (96-h LC50) was evaluated using 0.25mg/L, 0.30mg/L, 0.35mg/L and  0.40mg/L while sub-lethal effects (42 days) was carried out on haematological parameters  like Red Blood Cell (RBC), White Blood Cell (WBC), Haemoglobin (Hb), Packed Cell  Volume (PCV), Mean Corpuscular Volume (MCV), Mean Corpuscular Haemoglobin (MCH)  and Mean Corpuscular Haemoglobin Concentration (MCHC) using 0.064mg/L, 0.048mg/L,  0.032mg/L and 0.016mg/L which are the 20%, 15%, 10% and 5% of the 96-h LC50 value.  Mortality increased as the concentrations of the effluent increases and 0.32mg/L was  obtained as LC50. In comparison with the control, the mean value obtained for PCV, HB  and RBC showed significant differences (P<0.05) most especially at highest concentration  while there was no significant difference in all values obtained for WBC, MCV, MCH and  MCHC. It was concluded that the rubber processing effluent had some negative effect on  the haematology of Clarias gariepinus. Therefore, it is recommended that the effluent  should be properly treated before discharge into the environmen