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Evaluation of Clarias Gariepinus Nutrients Conversion and Growth Rate Fed Different Inclusion Rates of Cultured Chlorella Vulgaris Diet

Ikechukwu, C.C, ., Ude, E, F, ., Okeke, P. A, ., Okoye, T.C, ., Akwuaka, P.C

Abstract

This study investigated the Culture and Inclusion of Chlorella vulgaris in the diet of Clarias gariepinus. About 50mls of pure C. vulgaris isolates were dissolved in 30kg of cured poultry manure which was later filtered and each poured into 70-liter fish tanks that contained 50 liters of water and allowed to be illuminated by sunlight for 16 days to enhance C. vulgaris multiplication. The C. vulgaris matrix was harvested, filtered and incorporated in fish feed at 0g/kg, 10g/kg, 20g/kg, 30g/kg and 40g/kg inclusion levels as feed suppliment. The treatments were replicated 3 times to have 15 fish tanks.About 10 juveniles of Clarias were stocked per tank and fed for 16 weeks at 5% body weight.Proximate analysis of C.vulgaris matrix revealed, Ash(30%),Fibre(10.48%),Protein(32.41%) and metabolizable energy(262kcal/g) The C. vulgaris matrix inclusion rate of 20g/kg produced comparatively excellent results in C.gariepinus weight gain and length increase and their derived parameters through out the course of the work.The same trend was also followed in Feed Intake,Protein Intake,Feed Conversion Ratio,Protein Efficiency Ratio and Nutrient metabolism parameters.While 30g/kg inclusion rate produced good results in weeks 4 and 12, 10g/kg inclusion rate produced better results in weeks 12 and 16.The control(0g/kg) had the least of all the recorded values.For economic reasons we recommend inclusion rate of 20g/kg. Key Words: Chlorella vulgaris, Clarias gariepinus, feed suppliment, growth parameters, proximate analysis.

Keywords

Chlorella vulgarisClarias gariepinusfeed supplimentgrowth parametersproximate analysis.

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