Judul: Pengolahan dan Pemanfaatan Larva dan Pupa BSF (Black Soldier Fly) Hasil Dekomposisi Limbah Organik
Abstrak: Black Soldier Fly (BSF) memiliki kandungan protein yang cukup tinggi, yaitu 40-50% dengan kandungan lemak berkisar 29-32%. Larva dan pupa BSF yang dihasilkan dari dekomposisi dapat diolah menjadi komponen penting pakan hewan ternak dengan mengubahnya menjadi pelet. Tujuan dari penelitian ini adalah menganalisis proses pengolahan larva BSF hasil dekomposisi limbah padat yang tepat, menghasilkan tepung protein dan pelet ikan dari pengolahan larva dan pupa BSF hasil dekomposisi limbah organik, dan mengkaji mutu pakan hasil pemanfaatan larva dan pupa BSF. Tahap penelitian meliputi konversi larva dan pupa BSF menjadi pelet, uji mutu pakan, dan pengukuran pertumbuhan Pangasius sp. dan ayam. Berdasarkan SNI 7548:2009, mutu pelet hasil pemanfaatan larva dan pupa BSF sudah sesuai, kecuali parameter kadar lemak pada pelet A serta kadar air dan abu pada pelet B. Pelet ikan yang dicampurkan dengan 20% tepung protein berpengaruh terhadap pertumbuhan berat Pangasius sp. Penggunaan tepung protein yang berasal dari larva BSF sebagai bahan substitusi pakan komersil memberikan hasil berat pada ayam yang hampir sama dengan berat ayam yang diberi pakan komersil saja., Black Soldier Fly (BSF) has a fairly high protein content, which is 40-50% with a fat content ranging from 29-32%. BSF larvae and pupae resulting from decomposition can be processed into important components of livestock feed by converting them into pellets. The purpose of this study was to analyze the proper processing of BSF larvae resulting from solid waste decomposition, to produce protein meal and fish pellets from processing BSF larvae and pupae from organic waste decomposition, and to examine the quality of feed from the utilization of BSF larvae and pupae. The research phase included the conversion of BSF larvae and pupae into pellets, feed quality testing, and measurement of the growth of Pangasius sp. and chicken. Based on SNI 7548:2009, the quality of pellets from the use of BSF larvae and pupae was appropriate, except for the parameters of fat content in pellet A and water and ash content in pellet B. Fish pellets mixed with 20% protein flour affected the weight growth of Pangasius sp. The use of protein flour derived from BSF larvae as a substitute for commercial feed gave chicken weight results that were almost the same as the weight of chickens fed commercial feed only.
Keyword: Black Soldier Fly (BSF), Pelet, Larva, Pangasius sp.

Judul: Biokonversi Limbah Organik Pasar Agrobis Magetan Menjadi Protein Pakan Ternak Menggunakan Larva Black Soldier Fly
Abstrak: Salah satu pengolahan limbah organik yang ramah lingkungan adalah biokonversi limbah organik menggunakan larva black soldier fly (BSF). Penelitian ini bertujuan menganalisis karakteristik dekomposisi limbah organik Pasar Agrobis dengan larva BSF, serta mengaplikasikan dan mengkaji mutu pakan pengolahan larva BSF sebagai alternatif substitusi protein bagi pakan ternak. Penelitian dilaksanakan pada Maret-April 2022 di Kabupaten Magetan, Jawa Timur. Karakteristik dekomposisi limbah padat organik menggunakan larva BSF diidentifikasi dengan waste reduction index (WRI), fresh matter consumption rate (FMCR), dry matter reduction (DMR), dan dry matter consumption rate (DMCR). Nilai WRI dan FMCR untuk limbah organik Pasar Agrobis selama 15 hari, yaitu 3,2%/hari dan 32,1 mg/larva/hari. Nilai persen DMR sebesar 84,4% dan nilai DMCR sebesar 27,1 mg/larva/hari. Aplikasi larva BSF sebagai substitusi protein pakan memenuhi persyaratan mutu pakan berdasarkan SNI 8173:2015, kecuali lemak kasar dan serat kasar. Pertambahan bobot ayam broiler umur 8-21 hari (starter) dan 21 hari ke atas (finisher) selama 12 hari berbeda nyata terhadap pakan komersial (p>0,05) dengan nilai rasio konversi pakan (RKP) lebih rendah., One of the environmentally friendly organic waste treatments is the bioconversion of organic waste using black soldier fly (BSF) larvae. This study aims to analyze the decomposition characteristics of organic waste in the Agrobis Market with BSF larvae, apply, and examine the quality of animal feed from BSF larvae as an alternative to protein substitution. The study was conducted in March-April 2022 in Magetan Regency, East Java. Characteristics of the decomposition of organic waste using BSF larvae were identified with waste reduction index (WRI), fresh matter consumption rate (FMCR), dry matter reduction (DMR), and dry matter consumption rate (DMCR). The value of WRI and FMCR organic waste for 15 days were 3,2%/day and 32,1 mg/larva/day. The percent DMR was 84,4% and DMCR was 27,1 mg/larva/day. The application of BSF larvae as protein substitution meets the animal feed quality based on SNI 8173:2015, except for crude lipid and fiber. The growth gain of broiler aged 8-21 days (starter) and above 21 days (finisher) for 12 days obtained significantly different against commercial feed (p>0.05) with a lower food convertion ratio (FCR) value.
Keyword: Agrobis Market, bioconversion, black soldier fly, broiler

Judul: Metrik Einstein (Anti-) Self-Dual Berdimensi Empat dengan Metode Cartan
Abstrak: Gravitational field equation can be formulated in differential forms (differential geometry), which describes gravity as a manifestation of the curvature of space-time. Curvature of space-time is characterized by a metric that satisfies the gravitational field equation. With differential forms it can be formulated the (anti-) self-dual Einstein equation, which is a modification of the Cartan structure in (anti-) self-dual basis. Calculation of (anti-) self-dual metric with (anti-) self-dual Einstein equation is simpler than the calculation using Christoffel symbols.
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