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Croatian Journal of Fisheries : Ribarstvo, Vol. 71 No. 3, 2013.

Original scientific paper

EVALUATION OF FERMENTED MANGO (Mangifera indica) SEED MEAL IN THE PRACTICAL DIET OF NILE TILAPIA, (Oreochromis niloticus) FINGERLINGS

Samuel Olubodun Obasa ; Federal University of Agriculture, Department of Aquaculture and Fisheries Management, P. M. B. 2240, Abeokuta, Ogun State, Nigeria
Segun Peter Alatise ; National Institute of Freshwater Research, New Busa, Niger State, Nigeria
Isaac Tunde Omoniyi ; Federal University of Agriculture, Department of Aquaculture and Fisheries Management, P. M. B. 2240, Abeokuta, Ogun State, Nigeria
Wilfred Olusegun Alegbeleye ; Federal University of Agriculture, Department of Aquaculture and Fisheries Management, P. M. B. 2240, Abeokuta, Ogun State, Nigeria
Francisca Adebukola George ; Federal University of Agriculture, Department of Aquaculture and Fisheries Management, P. M. B. 2240, Abeokuta, Ogun State, Nigeria

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Abstract

This study evaluated the use of fermented mango (Mangifera indica) seed meal (FMS) to substitute yellow maize in the practical diet for Nile tilapia, Oreochromis niloticus fingerlings (4.76±0.32 g). Five iso-nitrogeneous (35% crude protein) and approximately iso-energetic (3400 ME Kcal/kg) dietsin which yellow maize was replaced by FMSat 0% (FMS0/Control diet), 25% (FMS25), 50% (FMS50), 75% (FMS75) and 100% (FMS100) levels were formulated. The fish were fed on the diets at 5% body weight for 84 days. Alkaloids were highest (2.32%) among the anti-nutritional factors analyzed in FMS, while oxalate (0.84%) was lowest. Potassium was highest (8.91 mg/g) among the minerals, while copper was lowest (0.01 mg/g). Weight gain, specific growth rate and feed conversion ratio were similar (p>0.05) in fish fed diets FMS0 and FMS50. The fish fed diet FMS0 had the highest protein efficiency ratio (1.88). Protein digestibility decreased (p<0.05) as dietary FMS increased, while carbohydrate digestibility gave an inverse relationship. Results obtained show that FMS could replace yellow maize at 50% level without affecting growth, nutrient utilization and apparent protein digestibility in diets for Nile tilapia fingerlings.

Keywords

fermentation; mango seed; nutrient digestibility: Nile tilapia; anti-nutritional factors

Hrčak ID:

108850

URI

https://hrcak.srce.hr/108850

Publication date:

1.10.2013.

Article data in other languages: croatian

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