Cacing sutra (Tubifex sp) merupakan salah satu pakan alami yang dibutuhkan dalam pembenihan ikan khususnya pada fase larva, karena memiliki kandungan nutrisi yang baik untuk pertumbuhan larva. Penelitian ini bertujuan untuk mengetahui pemberian fermentasi ampas tahu dan limbah sayuran terhadap pertumbuhan cacing sutra (Tubifex sp). Penelitian ini menggunakan metode eksperimen dengan rancangan acak lengkap (RAL) yang terdiri dari fermentasi ampas tahu dan kotoran ayam, fermentasi limbah sayuran dan kotoran ayam fermentasi ampas tahu, limbah sayuran dan kotoran ayam, parameter yang diamati meliputi biomassa dan populasi cacing sutra, serta kualitas air sebagai penunjang. Hasil penelitian menunjukan bahwa pemberian media ampas tahu dan limbah sayuran dengan konsentrasi yang berbeda berpengaruh atau berbeda nyata terhadap pertumbuhan biomassa dan populasi cacing sutra. Nilai tertinggi terdapat pada perlakuan dua menghasilkan cacing sutra sebanyak 13,4g dan populasi ±19,250 individu. Berdasarkan data kualitas air selama penelitian diperoleh kisaran suhu 28-29,5 °C, nilai pH kisaran 7,5-8,2 dan nilai DO kisaran 5-9.
Kata kunci: Fermentasi, Ampas Tahu, limbah Sayuran, Biomassa, Populasi, Cacing Sutra

Silkworm (Tubifex sp) is one of the natural feeds needed in fish hatcheries, especially in the larval stage, because it has good nutritional content for larval growth. This study aims to determine the administration of fermented tofu dregs and vegetable waste to the growth of silk worms (Tubifex sp). This study used an experimental method with a completely randomized design (CRD) consisting of fermented tofu dregs and chicken manure, fermented vegetable waste and chicken manure fermented tofu dregs, vegetable waste and chicken manure, the parameters observed included biomass and silkworm population, and quality. water as support. The results showed that the administration of tofu dregs and vegetable waste media with different concentrations had a significant or significant effect on the growth of biomass and silkworm populations. The highest value was found in the second treatment which produced 13.4g silk worms and a population of ±19.250 individuals. Based on the water quality data during the study, the temperature range was 28-29.5 °C, the pH value was in the range of 7.5-8.2 and the DO value was in the range of 5-9. Keywords: Fermentation, Tofu Dregs, Vegetable Waste, Biomass, Population, Silk Worms