Assessment of Controlled Spawning Practices and Female Broodstock Replacement on Reproductive and Production Metrics in Culture of Gourami (Osphronemus goramy)

Gourami (Osphronemus goramy) is a freshwater fish species that has gained significant popularity among consumers due to its economic value and high nutritional content. However, various challenges in aquaculture have led to an imbalance in gurami production, influenced by factors such as low fecundity, fertilization rates, hatching success, and a limited spawning season that occurs only from February to July. Outside of this period, the spawning performance of gourami tends to decline. Consequently, it is essential to implement effective spawning manipulation techniques to enhance seed production in gurami aquaculture, particularly through controlled spawning methods that involve the replacement of female broodstock post-spawning to improve production outcomes. This study examines the production performance of controlled spawning (with broodstock replacement) versus uncontrolled spawning (without broodstock replacement) to fecundity, fertilization rates, hatching success, and the productivity of spawning containers. The research employs two treatments with three replications each: controlled and uncontrolled spawning. The findings indicate no significant differences (P>0.10) between controlled and unchecked spawning regarding fecundity, hatching success, fertilization rates, and spawning container productivity. Thus, it can be concluded that there are no significant differences in outcomes between the two treatments, suggesting that both methods can be effectively utilized.