An investigation into the value of yam (Dioscorea rotundata) peels as energy source in the diet of Oreochromis niloticus fry fed in indoor glass aquaria

Solomon, S.G. and Lamai, S.L. and Eyo, A.A. (1999) An investigation into the value of yam (Dioscorea rotundata) peels as energy source in the diet of Oreochromis niloticus fry fed in indoor glass aquaria. In: 13th Annual Conference of the Fisheries Society of Nigeria (FISON) , 3-8 November 1996 ,New Bussa, Nigeria, pp. 286-289.

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Abstract

The study was designed to investigate the value of the peels of yam (Dioscorea rotundata) as energy source in the diet of Oreochromis niloticus fry and to investigate the level of inclusion of this peels that will give optimum growth performance. Four diets, three levels of yam peels and a control, was prepared and tested on O. niloticus fry (mean weight of 0.27g) for ten weeks. Fifteen (15) O. niloticus fry were grouped in each of the glass aquaria, measuring 60x30x3Ocm and with a maximum capacity of 52 liters of water. The fry were fed twice daily at 10% biomass. The fry were weighed weekly to determine weight increment or otherwise and the quality of feed was adjusted accordingly. DTl (70% yam peels and 30% yellow maize) in the carbohydrate mixture gave the best performance. The fry fed this diet, gained a mean weight of 1.20g for the period of the experiment. The poorest performance in terms of growth was from fry fed the control diet (100% yellow maize in the carbohydrate mixture). Fry fed this diet gained mean weight of 0.80g for the duration of the experiment. Analysis of the various growth indices like SGR, PER, FCR and NPU shows that DTl was the overall best diet with an SGR value of I. 92 and FCR of 54.10. The difference in weight gain by fry fed the three levels of yam peels diet and the control diet (100% yellow maize) was not statistically significant (P>0.05)

Item Type: Conference or Workshop Item
Title: An investigation into the value of yam (Dioscorea rotundata) peels as energy source in the diet of Oreochromis niloticus fry fed in indoor glass aquaria
Personal Creator/Author:
CreatorsEmail
Solomon, S.G.
Lamai, S.L.
Eyo, A.A.
Page Range: pp. 286-289
Date: 1999
Event Title: 13th Annual Conference of the Fisheries Society of Nigeria (FISON)
Event Type: Conference
Event Location: New Bussa, Nigeria
Event Dates: 3-8 November 1996
Issuing Agency: Fisheries Society of Nigeria
Uncontrolled Keywords: Nigeria; energy resources; experimental culture; feeding experiments; fish culture; Dioscorea rotundata; Oreochromis niloticus
Subjects: Aquaculture
Item ID: 3870
Depositing User: Ms Maria Kalentsits
Date Deposited: 18 Jul 2010 11:48
Last Modified: 29 Sep 2011 16:46
Related URLs:
URI: http://aquaticcommons.org/id/eprint/3870

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