Maggots is an organism derived from the eggs of the black fly, Hermentia illucens (black soldier fly, BSF), which undergoes metamorphosis in the second phase after the egg phase and before the pupa phase which then turns into an adult fly. The purpose of this study was to analyze the utilization of organic waste substrate on the production of BSF maggots cultivation. This research was conducted outdoor at the Freshwater Aquaculture Fisheries Center (BPBAT) Sungai Gelam Jambi with a completely randomized design (CRD) with 4 treatments and 3 replications; Treatment A: PKM (palm kernel meal) 100%, B (PKM 50% + cabbage vegetable waste 50%), C (PKM 50% + coconut pulp 50%) and D (PKM 50% + coconut pulp 25% + vegetable waste cabbage 25%). The average yield parameter of high maggots biomass in treatment A was 673.67 g/4 kg substrate and the lowest biomass in treatment D was 239.67 g/4 kg substrate. For the average weight and length of the best maggots in treatment A (0.20 g/individual) and (1.83 cm), the lowest was in B (0.12 g/Ind. and 1.58 cm). The highest was in treatment B (5,182.31 individual/4 kg substrate) and the lowest was in D (1,479.44 ind./4 kg substrate. The highest bioconversion value of maggots to organic matter OSE (organic substrate efficiency) was highest in treatment A (16, 84%) and the lowest was in D (5.99%). Technically, treatment A was slightly better than B, while economically the best organic substrate medium for maggots cultivation was in treatment B with a production cost of Rp. 7.257 and the ECR (economic conversion ratio) value of 5.81 was lower than the other 3 treatments.   Keywords: Maggots, black soldier fly, Hermentia illucens, organic waste.   ABSTRAK   Maggots merupakan organisme yang berasal dari telur seranga lalat hitam, Hermentia illucens (black soldier fly, BSF). Tujuan penelitian ini yaitu menganalisis pemanfaatan subtrat limbah organik terhadap produksi budidaya maggots BSF. Penelitian ini dilaksanakan di Balai Perikanan Budidaya Air Tawar (BPBAT) Sungai Gelam, Jambi dengan rancangan acak lengkap (RAL) 4 perlakuan 3 ulangan yaitu perlakuan A : PKM (palm kernel meal) 100%, B (PKM 50% + limbah sayur kol 50%), C (PKM 50% + ampas kelapa 50%), dan D (PKM 50% + ampas kelapa 25%+ limbah sayur kol 25%).Rata-rata biomassa tertinggi didapatkan pada perlakuanA (673,67g/4 kg subtrat) dan biomassa terendah dihasilkan pada perlakuan D (239.67g/4 kg subtrat). Untuk bobot rata-rata dan panjang maggots terbaik dihasilkan pada perlakuan A (0,20 g/individu dan 1,83 cm/individu), terendah pada B (0,12 g/individu dan (1,58 cm). Jumlah populasi maggots yang terbanyak dihasilkan pada perlakuan B (5.182,31 ind./4 kg subtrat) dan terendah pada D (1.479,44 individu/4 kg subtrat). Nilai biokonversi maggots terhadap bahan organik OSEterbaik (organic substrate efficiency) tertinggi pada perlakuan A (16,84%) dan terendah pada D (5,99%). Secara teknis perlakuan A sedikit lebih baik dari B sedangkan secara ekonomi media subtrat organik terbaik untuk budidaya maggots terdapat pada perlakuan B dengan biaya produksi sebesar Rp. 7.257 dan nilai ECR (economic convertion ratio) sebesar 5.81 lebih rendah dari ke 3 perlakuan lainnya.   Kata kunci: Maggots, black soldier fly, Hermentia illucens, limbah organik.

The feed as a source of energy for the growth of fish is a component of the most important costs 40-89% and the quality should be good. The solution is through research. Research in the form of meal cassava leaves (Monihot utilissima) parents as a source of alternative protein substitute for fish meal in feed formulation catfish (Clarias gariepinus). The design used Complete Random Design with 4 treatments and 3 repetitions. The results showed that for the growth and the survival between treatments were not significant (P <0.5), meaning that all treatments were no differences can be categorized and feed ingredients of flour cassava leaves can replace most of the presence of meal fish  in fish feed formulas African catfish. Growth of the best catfish are on treatment A (55% meal cassava leaf: 00% fish meal) with daily growth of 8.27 grams was 2.61% and the B (40%% meal cassava leaves: 15% meal fish) 5.28 gram with daily growth is 1.86%, followed by C (15%%  meal cassava leaves: 15% meal fish ) 1:51% and D (0% meal cassava leaves : 55% meal fish ) 1:33%. Catfish survival rate was not significant (P <0.5), and relatively equally well A (96.17%), B (94.77) and C (95.92) and the best in treatment for D (96.37 ). As users are advised to wear formulations in treatment B (40% meal fish and 15%  meal cassava leaves old). Keywords: Catfish, Ffeed, Meal fish, Meal cassava leaves AbstrakPakan sebagai sumber energi bagi pertumbuhan ikan  merupakan komponen biaya yang paling besar 40-89%  dan kualitasnya harus baik. Solusinya melalui penelitian. Penelitian berupa tepung daun  singkong (Monihot utilissima) tua sebagai sumber protein alternatif penganti tepung ikan dalam formulasi pakan ikan lele (Clarias gariepinus). Rancangan digunakan Rancangan Acak Lengkap dengan 4 perlakuan dan 3 kali ulangan. Hasil penelitian menunjukan bahwa untuk pertumbuhan dan kelulusan hidup antar perlakuan tidak signifikan (P < 0,5), artinya semua perlakuan  tidak ada perbedaan dan dapat dikatagorikan bahan pakan dari tepung daun singkong dapat mengantikan sebagian keberadaan tepung ikan dalam formula pakan ikan lele dumbo. Pertumbuhan ikan lele terbaik terdapat pada perlakuan A (55% tepung daun singkong : 00% tepung ikan) 8,27 gram dengan pertumbuhan harian adalah 2.61% dan  pada B (40%  % tepung daun singkong : 15% tepung ikan) 5,28 gram dengan pertumbuhan harian adalah 1.86%, diikuti C (15% % tepung daun singkong :15% tepung ikan) 1.51% dan D (0 % tepung daun singkong : 55% tepung ikan) 1.33%. Tingkat kelangsungan hidup ikan lele tidak signifikan (P < 0,5), dan  relatif sama baiknya A (96,17%), B (94,77) dan C (95,92) dan terbaik pada perlakuan untuk D (96,37). Sebagai pengguna disarankan memakai formulasi pada perlakuan B (40% Tepung ikan dan 15% tepung daun singkong tua). Kata kunci: Ikan lele, Pakan, Tepung ikan, Tepung  Daun Singkong Tua