Browsing by Author "Idowu, O. G."

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Effect of partial replacement of soybean meal with jackbean (Canavalia ensiformis) as an alternative plant protein in the practical diets of cat fish (Clarias gariepinus)
(2015) Olukunle, O. A.; Oshoke, O. J.; Idowu, O. G.
This study assessed the potentials of Jackbean seed meal (JBSM) for partial replacement of soybean in diets of Clarias gariepinus. Hence, five diets were formulated at 40% crude protein level as Soybean in control diet (CD) was replaced progressively at (5%, 10%, 15% and 20%) by JBSM in test diets TD1, TD2, TD3, TD 4 respectively. The Jackbean seeds were treated by dehulling, soaking in ash and followed by boiling to reduce the anti nutritional content (canavanine) present in the seeds. Fifteen plastic tanks of (37 liters) containing 25 liters of water was used for growth trial. Each treatment contained 15 fingerlings with an average weight of 6.44 ± 0.1g in three replicates per treatment. Test fish in each tank were fed 5% of their biomass twice daily for 84days. At the end of the experiment proximate composition and growth parameters were analyzed. Result showed that fish fed TD 1 (5% inclusion level) and TD2 (10% inclusion level) compared favourably with the control diet (P ? 0.05). Fish fed control diet had the best specific growth rate (0.54) and feed efficiencies (Protein Efficiency Ratio (PER)= 0.41 and (Food Conversion Ratio, FCR= 6.57). However, considering the results of the statistical analysis used to compare the difference between the means of the different treatment, TD1 (5% inclusion level) compared most favourable with the control in terms of mean weight gain (8.87), specific growth rate (0.39) which was significantly different (P ? 0.05) from other treatments, PER from CD, TD3 and TD4 which are not significantly different (P ? 0.05) from TD2, and FCR (9.41) which was not significantly different (P ? 0.05) from CD but significantly different (P ? 0.05) from TD2, TD3 and TD4. From the results of this study, it shows that 5% of soybean in the diet can be replaced with JBMS without any adverse effect on the growth performance.
Energy audit of commercial buildings (a case study of global fleet oil ltd. and national mirror houses
(2012) Elusakin, J. E.; Ajide, O. O.; Salau, T. A. O.; Idowu, O. G.
"The dearth and cost of energy supply in Nigeria calls for planning and management through energy audit. The object of this paper is to carry out a comprehensive energy audit of the two commercial buildings commonly referred to as Energy House and Mirror House which are the head offices of the Global Fleet Oil & Gas Ltd. Company and National Mirror Newspaper respectively, using their 2011 energy consumption data. The power supplies to both offices are from the same generators which provide two third of the power supply to the building in 2011 but with different transformers of 1000 kV A each for the PHCN power supply. The facilities load were assessed by direct inspection and conversion were done where necessary. The capacities of the available three generators were 400, 640 & 1000 kW respectively (using 0.8 power factor) and the maximum load of the facility at any time in a day is 398 kW. This study has revealed the monumental financial waste on the un-utilized energy and facilities that could be replaced with energy saver equipment. Therefore, it is imperative that a holistic energy planning and regular assessment of energy requirements are considered as key components of building projects. "