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Apparent nutrient digestibility, growth performance and feed utilization of juvenile Nile tilapia, Oreochromis niloticus L., as influenced by stocking density and feeding frequency

O. M. Yousif.

Experiments were carried out to study the effects of stocking density and feedingfrequency on apparent nutrient digestibility, growth performance and feed utilization efficiency of tilapia, Oreochromis niloticus juveniles. Significantly higher (P < 0.05) weight gain (%), specific growth rate (SGR %/day), feed conversion ratio (FCR), protein efficiency ratio (PER), apparent nitrogen utilization (ANU %) and carcass nitrogen deposition (CND mg/day) were achieved by the fish stocked at 0.5/L and receiving either 3 or 4 meals/day. Significantly lower growth performance was observed in all groups of fish fed twice/day. At all stocking densities tested, apparent digestibility coefficients (ADC) for protein were significantly better when the fish were fed 3 meals/day. In general the ADC values obtained in this experiment were low for all nutrients which may be attributed to the excreta collection method applied in this study

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The articles in Bibliomed are open access articles licensed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License (https://creativecommons.org/licenses/by-nc-sa/4.0/) which permits unrestricted, non-commercial use, distribution and reproduction in any medium, provided the work is properly cited.