The use of Spirulina platensis as tilapiaOreochromis niloticusdiet supplementation

Abstract

Penggunaan Spirulina platensis sebagai suplemen bahan baku pakan ikan nilaOreochromis niloticus ABSTRACTSpirulina is blue green algae that have high nutrient content like protein and vitamin so it can be used as source of single cell protein (SCP). This research was conducted to know minimum doses of Spirulina in different protein feed on growth performance of tilapia. Experimental diets devided by two different protein level (25% of protein and 28% of protein) and three levels supplementation of Spirulina 0% (25A), protein level 25% supplemented Spirulina 3% (25B), protein level 25% supplemented Spirulina 6% (25C), protein level 28% supplemented Spirulina 0% (28A), protein level 28% suplemented Spirulina 3% (28B), and protein level 28% supplemented Spirulina 6% (28C). Testeds feed were tilapia with average initial weight 17,24±0,29 g and density five fish/aquarium. Tilapia reared in aquarium sized 50×40×35 cm 3 filled with 30 cm water and provided alt recirculation system. Fish were cultured for 40 days and fed at satiation with three times feeding frequency. All data analyzed statistically by one-way ANOVA. Result demonstrated that various doses of Spirulina in different protein level of feed influenced specific growth rate, feeding efficiency, protein deposition, and fat deposition. Fish were fed by feed containing Spirulina 3% in protein level 25% showed growth performance as same as fed of protein level 28%.