Abstract
The present study was conducted during 56 days to evaluate the effect of substituting fish meal (FM) with pre-treated Lima bean meal (LBM) on growth, feed utilization, and nutrient retention in Clarias gariepinus fingerlings weighing 3.00±0.02g. Four isonitrogenous (40% crude protein) diets containing 0% (D0), 25% (D25), 50% (D50) and 100% (D100) of LBM, as FM substitute were used. D0 was considered a control diet. The results obtained indicate no significant difference in weight gain (11.97±0.67g and 12.95±2.12g), specific growth rate (3.46±0.23%/day and 2.95±0.22%/day), protein efficiency ratio (0.89±0.01 and 1.05±0.02), protein retention (10.83±0.23% and 12.48±0.19%) and lipid retention (9.11±0.55% and 9.45±0.43%) of fish fed D0 and D100 respectively. Fish fed D25 and D50, showed significant growth increase, feed utilization performances, and both protein and lipid retention in comparison with D0 and D100. This study indicates that Lima bean meal can be used up to 50% in formulating feed for Clarias gariepinus fingerlings in rural areas.
Highlights
IntroductionFishmeal is an essential constituent in production of fish feed
Represents 40-70% of the total cost of production (De Silva and Aderson, 1995)
Results a) Growth performances Growth performances of Clarias gariepinus fingerlings fed with the control and experimental diets in terms of weight gain, daily weight gain, and specific growth rate are presented in figures 1 and 2
Summary
Fishmeal is an essential constituent in production of fish feed It is the greatest protein source used in aquaculture feed because of its high protein content, good protein quality and balanced amino acid profile, high digestibility and palatability which is useful to enhance the uptake, digestion and Keywords: Clarias gariepinus fingerlings, fish meal, lima absorption of nutrients in fish Cameroon is considered to be Africa in miniature because it presents a great geo-climatic diversity and a singular plurality of much diversified natural environments that seem to bring together most of the ecosystems of tropical Africa (Tchawa, 2012) These ecosystems are endowed with a rich terrestrial and ichthyologic biodiversity. Substituting Fish Meal with Pre-Treated Lima Bean Meal on Growth, Feed Utilization and Nutrient Retention in Clarias Gariepinus Fingerlings Reared in Hapa-in-Pond System
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