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Apparent Digestibility Coefficients of Nutrients in Diets Containing Jatropha curcas seedmeal by Oreochromis niloticus

Authors:

W.A. Jimoh ,

University of Ilorin, NG
About W.A.
Department of Aquaculture and Fisheries
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M.O. Shittu,

Federal College of Animal Health and Production Technology, NG
About M.O.
Department of Fisheries Technology
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A.A. Ayeloja,

University of Ilorin, NG
About A.A.
Department of Aquaculture and Fisheries
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S.A. Abdulsalami,

Crescent University, NG
About S.A.
Fisheries and Aquaculture Unit, Department of Biological Sciences
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F.Y. Okemakin

The Polytechnic, NG
About F.Y.
Department of Biology
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Abstract

Purpose : Apparent digestibility coefficients of nutrients in Jatropha curcas based diets were evaluated for Nile tilapia (Oreochromis niloticus) using AIA as marker or indicator.


Research Method : A total of 225tilapia were acclimatized for a week, weighed and allotted into five dietary treatments; containing 20 and 40% of 5- and 10-minute toasted Jatropha curcas replacing soybean meal in control diets. The diets were isonitrogenous and isolipidic. Each treatment was replicated three times with fifteen fish per replicate. Fish were fed 5% body weight on two equal proportions per day. Acid insoluble ash and digestibility coefficient determinations followed standard established procedures.

 

Findings : The results from the study indicated that the apparent digestibility coefficients of nutrients in control diets were significantly (p<0.05) higher than that test diets containing Jatropha curcas seedmeal. There was a reduction in the apparent digestibility coefficients of nutrients in the diet with increase replacement levels which were significant (p<0.05) at a 10-minute processing time. However, no significant difference (p>0.05) was observed in the apparent digestibility coefficient of nutrients in 5-minute toasted Jatropha up to 40% soybean replacement among the fish fed the diet. So also, the apparent carbohydrate digestibility coefficient of the different test dietary treatments was not statistically different (p>0.05).

 

Originality / Value : It is evident from this study that diets containing Jatropha curcas seedmeal were relatively well digested by Oreochromis niloticus compared with soybean-based diets.

How to Cite: Jimoh, W.A., Shittu, M.O., Ayeloja, A.A., Abdulsalami, S.A. and Okemakin, F.Y., 2020. Apparent Digestibility Coefficients of Nutrients in Diets Containing Jatropha curcas seedmeal by Oreochromis niloticus. Journal of Agricultural Sciences – Sri Lanka, 15(3), pp.378–386. DOI: http://doi.org/10.4038/jas.v15i3.9029
Published on 01 Sep 2020.
Peer Reviewed

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