Effect of Silkworm Pupae Meal on Proximate Composition and Nutritional Quality of Tilapia Flesh

Abstract

Silkworm pupae (Bombyx mori), a by-product of the sericulture industry, are generated in large quantities annually, posing disposal and environmental issues despite their high nutritional value. This study investigate the effect of incorporating silkworm pupae meal into the diet of tilapia (Oreochromis mossambicus) with respect to growth performance, feed utilization, and body composition. A 90-day feeding trial was conducted using diets containing 0% (control), 25%, and 50% silkworm pupae meal. This study showed a progressive increase in protein (16.8% to 19.7%) and lipid content (4.5% to 6.1%) of fish flesh with higher pupae inclusion, while moisture and carbohydrate content decreased. Ash content also increased slightly, indicating enhanced mineral deposition. These findings demonstrate that silkworm pupae improve nutrient deposition, muscle quality, and feed efficiency in tilapia. Beyond nutritional benefits, utilizing locally available silkworm pupae can reduce fish feed costs, support circular economy, and promote sustainable aquaculture. Overall, silkworm pupae meal represents a cost-effective and eco-friendly alternative to conventional fishmeal in aquaculture.