International Journal of Research and Innovation in Social Science (IJRISS) |Volume VI, Issue XI, November 2022|ISSN 2454-6186
Omolara Adekoya
Department of Aquaculture and Fisheries Management, University of Ibadan, Nigeria
Abstract: As fish feed plays a major role in aquaculture profitability, reduction of cost determines successful productivity. This has necessitated the search for non-conventional feedstuffs that are cheap. The objective of this study is to assess the growth performance of extruded Irvingia wombolu (bitter African bush mango) peel based feed in catfish. The peel was sundried, ground into a fine mixture, the proximate analysis was carried out in the laboratory. The ground mixture was mixed with other feed ingredients at different inclusion rate of 5%, 10%, 15% and 20%, an extruder was used to produce fish feed pellets. Fingerlings were stocked ten per plastic tanks (40 litres) with a replicate for each treatment and each tank was filled with 30 litres of water (two-third of the volume of the tank) and water changed daily. Dried fish feed pellets were used in feeding fingerlings of catfish with average weight of 3.8g at 5% body weight for 8 weeks. The growth performance was analyzed to determine the weight gain, specific growth rate, food conversion ratio, survival rate of the fish and digestibility of the feed. SPSS ANOVA statistical analysis was used to analyze the results. The proximate composition of Irvingia wombolu peel was discovered to have crude protein (3.9%), crude fat (1.13%), crude fibre (12.37%), ash (4.13%) moisture (10.05%). Results obtained from the experiment showed significant difference (p<0.05) in the mean weight gain, feed conversion ratio, and specific growth rate compared with control diet (commercial catfish diet). Feed inclusion rate of 5% Irvingia wombolu peel exhibited a good growth performance in terms of weight gain (7.09±0.00), specific growth rate (0.93±20.01) and food conversion ratio (2.31±0.01), followed by 20% inclusion rate with weight gain of 6.84±20.04. However, feed inclusion rate of 15% exhibited highest mortality rate and the lowest growth performance. It can therefore be concluded that inclusion of Irvingia wombolu peel into the diet of catfish is non-harmful to the carcass of fish.
Keywords: Irvingia wombolu peel, Clarias gariepinus, proximate composition, extruder, inclusion rate
I. INTRODUCTION
Aquaculture is one of the fastest growing food production activities in the world. It plays a significant role in many countries by providing a higher income, better nutrition, and better employment opportunities (Kannadhason et al. 2011). The continuous rise in the demand for fish has made aquaculture industry the fastest growing food producing sector in the world. Hence, it continuous growth is largely dependent on the ability of fish feed industry to provide quality feed that