Department Of Marine Sciences

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https://ir.unilag.edu.ng/handle/123456789/3388
From its inception in 1962, the University of Lagos has been identified as a potential centre for the development of Marine Biology and Fisheries in Nigeria. At that time, it was the only University/ Institution in Nigeria situated by the sea and it was obvious that it was most suitable for the development of such disciplines. In the absence of a Faculty of Agriculture and taking full benefit of its location by the sea, lagoon and river, the University of Lagos is one of the very rare institutions in the world suitable for the establishment of a Marine Biology and Fisheries programme.

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Browsing Department Of Marine Sciences by Author "Aarode, O.O."

Now showing 1 - 4 of 4
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    Open Access
    Dietary Effects of ripe and unripe Banana peels on the growth and economy of production of Juvenile Catfish (Clarias gariepinus Burchell, 1822)
    (Journal of Fisheries Sciences, 2014) Lawal, M.O.; Aderolu, A.Z.; Dosunmu, F.A.; Aarode, O.O.
    Six diets were produced using graded levels of banana peels (5, 10 and 15% for both ripe (RBP) and unripe (UBP) banana peels) which were compared with the control diet (CTR) containing maize in the diet of C. gariepinus juveniles. Feeds were fed to triplicate groups of ten fish each to satiation thrice daily for ten weeks. There were significant differences (p<0.05) in Mean Weight Gain (MWG) and Specific Growth Rate (SGR) across diets. The CTR had the highest MWG (58.40 ±5.27g) and SGR (1.877±0.09%) while the least values of MWG (25.03 ±1.85g) and SGR (1.106 ±0.05%) were recorded in Diet3 (15% UBP). The Feed conversion ratio, Protein efficiency ratio and Protein intake recorded significant differences (P<0.05) between the CTR and other diets. Similar results were recorded for Profit Index, Incidence of Cost and Economic Investment Cost Analysis. Likewise, analysis of fish organs recorded significant differences (P<0.05) between the CTR and other diets. Though the CTR had the best growth performance, it had the least Profit Index (1.87) while Diet2 (10% RBP) had the highest Profit Index (3.11). Thus, plantain peel is a profitable alternative energy source for partial substitute of maize up to 10% RBP and UBP in diet of C. gariepinus.
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    Open Access
    Evaluation of soybean meal replacement with sesame seed meal using activated charcoal as an additive in the diet of African catfish juveniles, Clarias gariepinus
    (International Journal Aquatic Biology, 2016) Alonge, T. O.; Lawal, M.O.; Aderolu, A.Z.; Aarode, O.O.; Seriki, B.M.
    This study evaluated the effects of 0.25% activated charcoal added to sesame seed meal in partial replacement of soybean meal of juvenile Clarias gariepinus diet on growth and haematological parameters for 70 day experimental period. Six experimental diets were formulated as: control diet 1 (100% SSM without activated charcoal), control diet 2 (100% SSM plus 0.25% activated charcoal), diet 3 (50% SMB+50% SSM), diet 4 (50% SBM+50% SSM+0.25% AC), diet 5 (30% SBM+70% SSM) and diet 6 (30% SBM+70% SSM+0.25AC). The inclusion of activated charcoal recorded significant improvement in mean weight gain, mean feed intake, specific growth rate (SGR), protein intake (PI) and protein efficiency ratio (PER). The control diet 2 recorded the highest values for growth and nutrient utilization parameters while diet 5 recorded the least values for these parameters. The best values for mean weight gain (65.33±5.57 g), specific growth rate (2.56±0.12% / day) and feed conversion ratio (0.71±0.05) were recorded in fish fed control diet 2 while the worst values (41.30±3.82 g, 1.92±0.11% / day, and 1.07±0.07, respectively) for these parameters were observed with diet 5. However, haematological parameters did not differ significantly across the diets. Thus, from this study 0.25% activated charcoal could favorably be added to the feed of C. gariepinus for optimum performance without any adverse effect on the health status of the fish.
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    Open Access
    Growth and economic performance of Nile Tilapia, Oreochromis niloticus (L.) fingerlings fed diets containing graded levels of sclerotium
    (AACL Bioflux, 2013) Lawal, M.O.; Aderolu, A.Z.; Aarode, O.O.
    This study was conducted to evaluate the effects of inclusion of sclerotium as a substitute for soybean meal in the diet of Oreochromis niloticus using growth performance, economy of production, haematological and biochemical parameters as indices. Four experimental diets comprising of control (CTR) without sclerotium and other three diets SC1, SC2 and SC3 containing 7.5, 10.0 and 12.5 % sclerotium, respectively. The experimental diets were fed to triplicate groups of fish fingerlings (0.81± 0.00g average body weight) for 70 days. The inclusion of sclerotium at 7.5% level recorded the best values for mean weight gain (MWG), specific growth rate (SGR) and feed conversion ratio (FCR). There was no significant difference (p>0.05) in the incidence cost (IC) and profit index (PI) among the diets however, the best results were achieved at 10% (SC2) inclusion level. The parked cell volume (PCV), haemoglobin (Hb), neutrophil and lymphocyte showed significant difference (p<0.05) between CTR and other three diets while there was no significant difference (p>0.05) in eosinophil among the four diets. Biochemical parameters recorded significant differences (p<0.05) among the four diets. Hence, due to the nutritional and therapeutic characteristics of sclerotium, its inclusion in the diet up to 12.5% could be tolerated by O. niloticus.
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    Open Access
    Substitution Effects of Pleurotus tuber-regium Sclerotium for Soymeal on Growth, Nutrient Utilisation, Haematology and Carcass Composition of Juvenile African Catfish, Clarias gariepinus
    (Faculty of Science, University of Lagos, 2015) Seriki, B. M.; Aderolu, A.Z.; Lawal, M.O.; Aarode, O.O.
    A 70-day feeding trial was conducted with Clarias gariepinus juveniles to investigate the effects of partial substitution of soybean meal with sclerotium of Pleurotus tuber-regium on growth, economic parameters, nutrient utilisation, haematology and carcass proximate composition. Three experimental diets were formulated with graded levels of sclerotium (Diet 1: 10%, Diet 2: 15% and Diet 3: 20% inclusion) and the control without sclerotium. The results showed no significant difference (P > 0.05) in the growth, economic and nutrient utilisation parameters. The control group recorded the highest values for weight gain (102.37 g) and specific growth rate (3.15%/day) followed by Diet 1 (101.73 g and 3.13%/day, respectively). Though the best feed conversion ratio (1.43) was recorded in control group, Diet 1 recorded the highest values for protein intake (52.20 g) and net profit value (₦217.67/kg). With the exception of WBC, no significant difference (P > 0.05) was recorded in haematological parameters. Similarly, the carcass analysis did not show any significant difference (P > 0.05) across diets with the exception of the crude protein which was significantly low in the control diet.