Author(s): Oluwalola OI, Fagbenro OA and Adebayo OT

Abstract: The present study was designed to investigate the haematological and serum biochemical parameters of Nile Tilapia Oreochromis niloticus from different culture enclosures (plastic tank, sandcrete tank and earthen pond), at the Teaching and Research Farm of the Departmentof Fisheries and Aquaculture Technology, Federal University of Technology, Akure, Ondo State, Nigeria. Haematological parameters such as red blood cells (RBC), haemoglobin (Hb), white blood cells (WBC), packed cell volume (PCV), mean corpuscular volume (MCV), mean corpuscular haemoglobin (MCH), and mean corpuscular haemoglobin concentration (MCHC) and the serum biochemical parameters like protein, albumin, glucose, cholesterol and alanine aminotransferase (ALT) were determined within the three culture enclosures using One-Way Analysis of Variance (ANOVA) at 95% confidence level, comparisons among means were separated by Duncan Multiple Range Test (DMRT) at p<0.05. There was significant difference (p<0.05) in WBC, PCV, Hb, RBC, MCH and MCHC between O. niloticus fingerlings reared in plastic, sandcrete tanks and earthen pond. Fish reared in plastic tank had the highest values of PCV, Hb and RBC (38.0, 12.6 and 4.22), while fish reared in earthen pond had the lowest values of PCV, Hb and RBC (24.3, 7.83 and 2.68). The white blood cell and mean corpuscular volume of O. niloticus reared in earthen pond (9.10, 90.7) was higher than the one reared in sandcrete tank (8.57, 90.1) and plastic tank (8.83, 90.6). Also, the result of the blood chemistry showed significant difference (p<0.05) in protein and cholesterol values of O. niloticus from the three culture enclosures. However, there was no significant difference (p>0.05) in ALT, glucose and albumin from the three culture enclosures. O. niloticus from earthen pond had the highest protein value of 9.58, while sandcrete and plastic tank had the lowest values that are similar to each other (7.28 and 7.26). However O. niloticus from earthen pond had the lowest cholesterol value of 2.01 while sandcrete and plastic tank had 2.12 and 2.15 respectively. This study thus, provides baseline information on the physiological status of O. niloticus from different culture enclosures (plastic, sandcrete tanks and earthen pond).

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