Pakan merupakan salah satu faktor yang penting dalam usaha budidaya perikanan. pakan alami merupakan pakan yang sudah tersedia di alam. pakan alami yang banyak digunakan dalah cacing sutra (tubifex sp). tujuan penelitian ini yaitu untuk mengetahui pengaruh pengunaan limbah organik terhadap pertumbuhan cacing sutra (tubifex sp). penelitian ini mengunakan metode eksperimen dengan model rancangan acak lengkap (ral) dengan variabel uji yaitu berupa perbedaan dosis pakan : a= 0 gr/wadah, b= 35 gr/wadah, c= 40 gr/wadah dan d= 45 gr/wadah yang diberikan selama 21 hari. pakan yang diberikan merupakan hasil fermentasi dengan komposisi di antaranya yaitu limbah kulit pisang kepok 20%, dedak 20%, ampas tahu 40%, em4 10% dan molase tebu 10%. hasil penelitian menunjukkan perlakuan d dengan dosis 45 gram pakan didapatkan rata-rata pertumbuhan tertinggi yaitu 76,50 gram dengan populasi 87.975ekor. hasil penelitian menunjukkan bahwa perbedaan perlakuan memberikan pengaruh sangat nyata (p < 0,05) terhadap pertumbuhan cacing sutra, menunjukan bahwa ratarata pertumbuhan keempat perlakuan berbeda secara signifikan. kata kunci: cacing sutra (tubifex sp.), limbah organik, pakan alami

One of the key components of aquaculture enterprises is feed. food found in nature is referred to as natural food. the most commonly used natural food is silk worms (tubifex sp.). finding out how utilizing organic waste affects silk worm (tubifex sp.) growth was the purpose of this study. this study employed an experimental design using a completely randomized design (crd) model with test variables that were variations in feed dosage administered over a 21-day period a-0 gr/container, b35 gr/container, c40 gr/container, and d-45 gr/container fermentation produced the feed, which was made up of 20% saba (kepok) banana peel waste, 20% bran, 40% tofu dregs, 10% em4, and 10% sugar cane molasses the study's findings indicated that treatment d, which included a 45-gram feed dose, produced the greatest average growth 76.50 grams among the 87,975 worms in its population. the outcomes demonstrated that the four treatments greatly differed in terms of average growth, with cach treatment having a highly significant impact (p < 0.05) on silk worm growth. keywords: silk worms (tubifex sp.), organic waste, natural feed