NUTRITIVE COMPOSITION OF RED TILAPIA REARED IN FRESHWATER AND BRACKISHWATER
Abstract: The aim of this
research was to investigate the nutritive composition (especially fatty acids)
in red tilapia that was reared in freshwater and brackishwater. The fatty acid
contents were determined by gas chromatography. The fatty acids profile were -3 (linolenic acid, eicosapentaenoic acid/EPA, docosahexaenoic
acid/DHA), -6 (linoleic acid, arachidonic acid/AA), and -9 (oleic acid). Red
tilapia samples were obtained from Research Institute for Fish Breeding,
Sukamandi, West Java (freshwater ponds) and Congot, Yogyakarta
(brackishwater ponds; salinity 20 ppt). In this research, red tilapia reared in
different ecosystems showed different fatty acid profiles. Red tilapia
inhabiting brackishwater ecosystem has EPA (0.26±0.05%), DHA (3.42±0.26%), and
linoleic acid (17.20±0.56%) content higher than freshwater ecosystem (EPA = 0%;
DHA = 0.67±0.44%; linoleic acid = 9.08±4.76%), except for linolenic acid
(0.30±0.15% vs 0.25±0.10%), arachidonic acid (0.77±0.39% vs 0.93±0.13%) and
oleic acid (38.67±2.58% vs 37.44±0.74%). The ratio of -6/-3 in
red tilapia inhabiting freshwater ecosystem was about 11/1. The culture tilapia
in brackishwater ecosystem decrease -6/-3 ratio (4.5:1). So that for human
health, it will be better to consume brackishwater red tilapia than
freshwater red tilapia.
Keywords: nutritive
composition; fatty acid; red tilapia; freshwater; brackishwater
Author: Raden Roro Sri Pudji
Sinarni Dewi, Priadi Setyawan, Evi Tahapari, Adam Robisalmi, Nunuk Listiyowati
Journal Code: jpperikanangg120025
