Articles
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
M.O. Shittu,
Federal College of Animal Health and Production Technology, NG
About M.O.
Department of Fisheries Technology
A.A. Ayeloja,
University of Ilorin, NG
About A.A.
Department of Aquaculture and Fisheries
S.A. Abdulsalami,
Crescent University, NG
About S.A.
Fisheries and Aquaculture Unit, Department of Biological Sciences
F.Y. Okemakin
The Polytechnic, NG
About F.Y.
Department of Biology
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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