Studies on the nutritional value of cassava (Manihot utillisima) peels as energy source in the diet of Oreochromis niloticus fry fed in indoor glass aquaria

Solomon, S.G. and Lamai, S.L. and Tiamiyu, L.O. (1999) Studies on the nutritional value of cassava (Manihot utillisima) 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. 76-83.

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Abstract

This study, though, has as its core objective cost reduction in aquaculture nutrition was equally designed to investigate the value of the peels of cassava (Manihot utillisima) as energy source in the diet of Oreochromis niloticus fry. Three levels of cassava peels diet and a control (100% yellow maize in the carbohydrate mixture) was prepared and tested on O. niloticus fry for ten (10) weeks. The fry with mean weight of 0.32g were grouped fifteen (15) in each of the glass aquaria measuring 60x30x30cm with a maximum capacity of 52 litres of water. The fry were fed twice daily at 10% biomass. Weekly, the fry were weighed to determine the weight increment or otherwise and the quality of feed adjusted accordingly. Water quality parameters like temperature, pH and dissolved oxygen (D.0) were monitored and found to be at desirable level. DT 3 (97 % cassava peels and 3% yellow maize) in the carbohydrate mixture gave the best growth performance. The fry fed, this diet gained mean weight of 1.18g for the period of the experiment. However, 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 0.80 for the duration of the experiment. Analysis of the various growth indices like SGR, PER, FCR and NPU shows that DT3 was the overall best diet with an SGR value of2.40 and FCR of 43.83. However, DT 1 (70% cassava peels and 30% yellow maize) gave the poorest SGR of 1.61 and FCR of 67.58. The difference in weight gain among the fry fed the three levels of cassava peels diet and the control was not statically significant (P>0.05)

Item Type: Conference or Workshop Item
Title: Studies on the nutritional value of cassava (Manihot utillisima) 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.
Tiamiyu, L.O.
Page Range: pp. 76-83
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; experimental culture; feed composition; feeding experiments; fish culture; nutritional requirements; Manihot utillisima; Oreochromis niloticus
Subjects: Aquaculture
Item ID: 3727
Depositing User: Ms Maria Kalentsits
Date Deposited: 11 Jul 2010 05:50
Last Modified: 29 Sep 2011 16:56
URI: http://aquaticcommons.org/id/eprint/3727

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