Effect of Fish Meal Substitution with Sea Worm Flour (Nereis sp.) in Diet on Growth and Survival Rate of Pacific White Shrimp (Litopenaeus vannamei) Post Larvae

Abstract

Pacific white shrimp (Litopenaeus vannamei) is one of the fishery commodity that has high economic value. One of the obstacles faced by cultivators is the high price of feed which reaches half of the production cost. This is due to the high cost of fish meal which is the main raw material for making fish feed or shrimp feed. Therefore, fish meal was substituted with raw materials that have almost the same or higher nutritional content, more affordable prices and abundant presence, namely sea worm flour (Nereis sp.). The purpose of this study was to examine the effect of substitution of fish meal with marine worm meal (Nereis sp.) in diet on the growth and survival rate of pacific white shrimp (L. vannamei) and to examine the best do se. This study used an experimental method with a completely randomized design (CRD) of 4 treatments and 3 replications. The treatment tested was the substitution of fish meal with sea worm flour (Nereis sp.) in the diet with different doses including treatment A (0% flour Nereis sp.), B (25% flour Nereis sp.), C (30% flour Nereis sp.) and D (35% flour Nereis sp.). The test animals used were pacific white shrimp (L. vannamei) post larvae 15. Shrimp were reared in a container with a size of (43x30x25) cm with 6 liters volume of water. Shrimp were reared for 42 days with a stocking density of 30 fish/container. The results showed that the substitution of fish meal with sea worm meal (Nereis sp.) in the diet had a significant effect (P<0.05) on the growth and survival rate of PL15 pacific white shrimp (L. vannamei). The highest values for total feed consumption, relative growth rate, feed utilization efficiency, food conversion ratio, protein efficiency ratio and SR were found in treatment C (30% Nereis sp. flour) with successive values of 80,61 g, 3,84 %/day, 72,01%, 1,39%, 1,67% and 100,00%. The water quality in the rearing media during the rearing period was still in the right range for cultivating vaname shrimp (R. canadum) post larvae . Based on these results, it can be concluded that the best treatment is treatment C which produces the highest growth and survival rate of pacific white shrimp (L. vannamei) post larvae.