Agung Luthfi Fauzan, Angga Rizqy Kurniawan, Agum Pratama Fasya Abdullah, Ahnadia Wulan Ramadhana, Putra Ali Syahbana Matondang, Nina Nurmalia Dewi
Giant gourami (Osphronemus goramy) is one of Indonesia's leading freshwater fish commodities, but its production is still relatively low due to slow growth rates and low survival rates. This study aims to improve growth performance, feed conversion ratio (FCR), and survival rate (SR) by evaluating different feeding rates (FR) in a biofloc system. The experiment was fully randomized, with three replicates for each of the four treatments: P1 (FR 2.5% + biofloc C/N ratio 12), P2 (FR 3.5% + C/N 12), P3 (FR 4.5% + C/N 12), and the control group (FR 2.5% without biofloc). After a 49-day rearing period, the results showed that the biofloc system with a C/N ratio of 12 had no significant effect (P>0.05) on SGR, or FCR compared to the control group. However, this system significantly improved fish survival rates. P2 showed the best results, with a 2% SGR, 1.69 FCR, and 90% SR. According to these findings, feeding giant gourami using the biofloc system at a rate of 3.5% significantly increases feed utilization and survival rates. © 2025, Egyptian Society for the Development of Fisheries and Human Health. All rights reserved.
Department of Aquaculture, Faculty of Food Security, Universitas Negeri Surabaya, East Java, Surabaya, 60286, Indonesia; Aquaculture Study Program, Faculty of Fisheries and Marine, Universitas Airlangga, East Java, Surabaya, 60115, Indonesia; Department of Aquaculture, Faculty of Fisheries and Marine, Universitas Airlangga, East Java, Surabaya, 60115, Indonesia
