Growth and Survival Rates and Feed Utilization of Orange-spotted grouper Epinephelus coioides Cultured at Different Stocking Densities in Floating Net Cage

Authors : Ainulyakin IMLANI, Albaris TAHILUDDIN, Jurmin SARRİ, Morsid IMLANİ

Pages : 47-53

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Publication Date : 2022-12-31

Article Type : Research Paper

Abstract :Epinephelus coioides, commonly known as orange-spotted grouper, has potential aquaculture prospects due to its scarcity in the wild and marketability in semi-tropical and tropical regions. A floating net cage system has been demonstrated to be a technically and commercially feasible method of raising fish, allowing for a much higher stocked density of fish. In this study, orange-spotted grouper insert ignore into journalissuearticles values(E. coioides); was cultivated in a floating net cage fed with trash fish insert ignore into journalissuearticles values(Decapterus sp. and Sardinella sp.); to determine the effect of stocking density on survival rate insert ignore into journalissuearticles values(SR); and specific growth rate insert ignore into journalissuearticles values(SGR);. In addition, feed conversion ratio insert ignore into journalissuearticles values(FCR); and feed intake insert ignore into journalissuearticles values(FI); were also investigated. Three stocking densities: 20 fish/m3, 30 fish/m3, and 40 fish/m3, were used in the study. Results showed that E. coioides cultured at a stocking density of 20 fish/m3 in a floating net cage gained the highest SGR and SR significantly insert ignore into journalissuearticles values(p<0.05);. FI was significantly lesser insert ignore into journalissuearticles values(p<0.05); at a stocking density of 30 fish/m3, while FCR was significantly lower insert ignore into journalissuearticles values(p<0.05); at a stocking density of 40 fish/m3. Thus, this study suggests that a smaller stocking density of 20 fish/m3 is more effective to be used in the culture of grouper E. coioides in a floating net cage.
Keywords : Epinephelus coioides, floating net cage, growth, orange spotted grouper, stocking density