Effect of Black Soldier Fly Larvae Oil as a Replacement for Fish Oil on the Growth of White Snapper (Lates calcarifer)

The cultivation of white snapper is influenced by the quality and quantity of feed provided. The feed comprises protein, fat, carbohydrates, vitamins, and minerals. Fat plays an important role as an energy source that serves as a source of essential fatty acids. The source of fat in the feed is fish oil. However, fish oil prices are fluctuating and are not sustainable. Therefore, an alternative source is needed to reduce the use of fish oil. One alternative to fish oil is black soldier fly larvae oil. This study aims to determine the use of black soldier fly larvae oil in artificial feed on the absolute length, weight, feed conversion ratio, and relative growth rate of white snapper (L. calcarifer). The test fish in the study were white snapper measuring 8-9 cm. The stocking density for each research container was 10 fish with a stocking density of 1 fish/2 litres of water. The frequency of feeding is 3 times a day at satiation. The research method is experimental, with 4 treatments and 3 replications. The experimental method is a completely randomized design (CRD). The treatment of fish oil replacement using black soldier fly larvae oil includes A (0% black soldier fly larvae oil), B (15% black soldier fly larvae oil), C (30% black soldier fly larvae oil), and D (45% black soldier fly larvae oil). The results showed that the replacement of fish oil using black soldier fly larvae oil had a significant effect (the value of significance or probability <0.05) on the growth of absolute length (LM), absolute weight (W), feed conversion ratio (FCR) and relative growth rate (RGR). Treatment C (30% black soldier fly larvae oil) is the treatment that gives the best value on the absolute length (Lm) at 2.37±0.30 cm, absolute weight (W) at 7.92±1.38 grams, feed conversion ratio (FCR) at 1.13±0.17 and relative growth rate (RGR) at 2.36±0.38% day-1.