Effect of Noni (Morinda citriofolia) Aqueous leaf extract on water quality in rearing nile tilapia (Oreochromis niloticus) fingerlings in Aquaria [manuscript]
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Date
2018
Authors
Alexis R. Duque
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Abstract
The 90-day experiment was conducted to determine the effect of noni (Morinda citriofolia) leaf extract directly applied in the rearing water of Nile tilapia (O. niloticus) fingerlings in aquaria. The study aimed to assess the effect of leaf extract on the water quality of Nile tilapia fingerlings. The study had three treatments which were replicated thrice: T1 - control, T2 - 40 mg/ml of noni leaf extract and T3 - 80 mg/ml of noni leaf aqueous extract. The extract was applied daily in the rearing water. The results on the water quality parameters such as DO, pH and TAN were not significant (P>0.05) among treatments. All water quality parameter readings except DO were within the range for the rearing of Nile tilapia. The growth parameters evaluated are: initial weight, final weight, initial length, final length, gain in weight, and specific growth rate, feed conversion ratio. Analyses of variance of all growth parameters except final length were not significantly different. Analysis of variance showed that the mean operating expenses among treatments were significantly different. It is suggested that to have another study be conducted using of other culture facilities such as pond or tanks. It is further recommended to use another extraction procedure and likewise to use higher concentration in the future studies.