Judul: Substitution of Black Soldier Fly (BSF) Larvae Flour with Broiler Chicken Concentrate on Carcass and Internal Organs Percentage
Abstrak: Black Soldier Fly (BSF) adalah contoh dari serangga yang dapat digunakan sebagai sumber protein alternatif. Larva BSF dapat mengurangi limbah organik dan memiliki kandungan protein tinggi sekitar 42.65%. Tujuan penelitian ini adalah untuk melihat pengaruh tepung larva BSF pada persentase karkas, potongan komersial karkas dan organ dalam ayam broiler. Penelitian menggunakan 200 DOC yang dipelihara hingga umur 35 hari. Desain percobaan dalam penelitian terdiri dari 4 perlakuan dan 5 ulangan dengan Rancangan Acak Lengkap (RAL). Perlakuan yang diberikan adalah R0 = Pakan komersial, R1 = 0% BSF, R2 = 7.5% BSF, dan R3 = 15% BSF dengan 5 ulangan. Variabel yang diamati adalah persentase karkas, persentase pemotongan komersial karkas dan persentase organ dalam. Hasil penelitian menunjukan bahwa penambahan Black Soldier Fly pada pakan ayam broiler tidak memberikan pengaruh terhadap persentase bobot karkas, persentase bobot potong komersial, dan persentase bobot organ dalam tetapi meningkatkan pesentase gizzard. Oleh karena itu pemberian BSF 7.5% dan 15% dalam ransum finisher broiler dapat digunakan untuk mengurangi penggunaan konsentrat., In broiler farms the feed cost is the largest component of the production cost, Black Soldier Fly (BSF) is an insect that can be used as an alternative protein source. BSF larva can reduce organic waste into a high protein content. The purpose of this study was to determine the effect of BSF larva flour on the percentage of carcass, commercial cutting of carcass and internal organs of broiler chickens. The study used 200 DOCs kept for 35 days. For 35 days. The treatments were R0 = commercial feed, R1 = 0% BSF, R2 = 7.5% BSF, and R3 = 15% BSF with 5 replications. The observed variables were percentage of carcass, percentage of commercial cutting carcass in broiler ration had no effect on the percentage of carcass weight, percentage of commercial slaughter weight, and percentage of internal organ weight but increased the percentage of gizzard. As conclusion use of 7.5% and 15% BSF in finisher broiler ration can reduce the use of concentrate.
Keyword: Black Soldier Fly, Broiler, Carcass, Internal Organs

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: Penggunaan Teorema Homeomorphy 2-Manifold dan Teorema Euler Poincare pada Torus 𝑇�� dan Simplicial Complex 𝐾��
Abstrak: Two dimensional topological spaces are said to be homeomorphic if they have the same topological invariant, where one of topological invariant used is an Euler characteristic. Homeomorphy 2-Manifold’s Theorem and Euler Poincare’s Theorem are used to distinguish two topological spaces. Homeomorphy 2-Manifold’s Theorem uses Euler characteristic to identify two dimensional topological spaces. Euler Poincare’s Theorem is an alternative way to find Euler characteristic with Betti number, which is topological invariant as well. The objective of this paper is to investigate the homeomorphism of torus 𝑇����� and simplicial complex 𝐾�����. Topological space torus and simplicial complex 𝐾����� have the same Euler characteristic, which is two. Based on Homeomorphy 2-Manifold’s Theorem topological space torus 𝑇����� and simplicial complex 𝐾����� is homeomorphic.
Keyword: simplicial, torus, Euler, homeomorphism, topology