Abstract
Experiments were carried out to study the effects of stocking density and feeding frequency 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
Highlights
Tilapia culture is an expanding industry throughout the world with the trend toward conversion to semi-intensive and intensive industry
Experiments were carried out to study the effects of stocking density and feeding frequency on apparent nutrient digestibility, growth performance and feed utilization efficiency of tilapia, Oreochromis niloticus juveniles
Lower growth performance was observed in all groups of fish fed twice/day
Summary
Tilapia culture is an expanding industry throughout the world with the trend toward conversion to semi-intensive and intensive industry. Growth performance and feed utilization of juvenile Nile tilapia, Oreochromis niloticus L., as influenced by stocking density and feeding frequency Fish & Shrimp Farming Project, Abu Al Abyad, P.O. Box 372, Abu Dhabi, United Arab Emirates
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