Judul: Aplikasi Pakan Buatan dan Dampaknya Terhadap Kondisi Biometrik dan Biologis Benih Ikan Sidat (Anguilla sp.)
Abstrak: Upaya yang dapat dilakukan untuk meminimalisir eksploitasi berlebih pada benih ikan sidat (glass eel) yaitu melalui efisiensi penggunaan benih glass eel pada kegiatan budidaya. Efisiensi penggunaan benih (glass eel) dapat diwujudkan melalui pemenuhan nutrien glass eel pada tahap pendederan agar dihasilkan Survival Rate (SR), Specific Growth Rate (SGR) serta efisiensi pakan yang tinggi. Penelitian ini bertujuan untuk mengevaluasi pengaruh pakan buatan terhadap keragaan biometrik dan biologis glass eel. Pelaksanaan penelitian dilakukan dari bulan Februari hingga April 2023. Glass eel sebanyak 1200 ekor dibagi ke dalam 4 perlakuan berdasarkan jenis pakan (cacing sutera, IPB, Feng Li, dan STP). Hasil penelitian menunjukkan bahwa nilai faktor kondisi berkisar 0,09-0,15, panjang usus relatif (PUr) berkisar 20,35-23,01%, bobot usus relatif (BUr) berkisar 20,27-32,11%, bobot jantung relatif (BJR) berkisar 4,82-6,96%, dan bobot hati relatif (BHr) berkisar 24,51-30,36%. Pakan alami memberikan hasil yang lebih baik dibanding pakan buatan dan pakan buatan khusus glass eel IPB lebih baik dibanding pakan buatan lain yang diuji cobakan., Efforts can be made to minimize the overexploitation of glass eels through the efficient use of glass eel seeds in aquaculture activities. The efficient use of glass eel seeds can be realized by fulfilling glass eel nutrients at the seedling stage to produce a high Survival Rate (SR), Specific Growth Rate (SGR), and feed efficiency. This study aims to evaluate the effect of artificial feed on the biometric and biological performance of glass eel fry. The research was conducted from February to April 2023. The 1200 glass eels were divided into four treatments based on the type of feed (silkworm, IPB, Feng Li, and STP). The results showed that condition factor values ranged from 0.09-0.15, relative intestinal length (PUr) ranged from 20.35-23.01%, relative intestinal weight (BUr) ranged from 20.27-32.11%, relative heart weight (BJR) ranged from 4.82-6.96%, and relative liver weight (BHr) ranged from 24.51-30.36%. The natural feed gave better results than the artificial feed, and the IPB glass eel artificial feed was better than the tested artificial feed.
Keyword: eel, glass eel, growth, silkworm

Judul: Penambahan  Emulsi Lemak dan Ekstrak Pankreas pada Pakan guna Mereduksi Limbah Organik pada Pemeliharaan Benih Ikan Sidat (Anguilla sp.)
Abstrak: Upaya untuk mereduksi limbah organik hasil pemeliharaan benih (glass eel) dapat dilakukan dengan dengan meningkatkan efisiensi pakan pada kegiatan budidaya. Penelitian ini bertujuan untuk menganalisis pengaruh pemberian emulsi lemak dan ekstrak pankreas ayam pada pakan buatan terhadap keragaan biometrik, pertumbuhan, efisiensi pakan, dan produksi limbah benih ikan sidat. Penelitian ini dilakukan dari bulan Januari hingga Mei 2023. Rancangan penelitian yang digunakan adalah Rancangan Acak Lengkap (RAL) dengan 5 perlakuan pakan berdasarkan konsentrasi enzim berbeda yaitu kontrol, 0%, 3%, 6%, dan 9%. Nilai faktor kondisi glass eel berkisar antara 0,09-0,12, panjang usus relatif (PUr) berkisar antara 17,58-19,85%, bobot usus relatif (BUr) berkisar antara 24,16-31,82%, bobot jantung relatif (BJr) berkisar antara 3,71-6,00%, dan bobot hati relatif (BHr) berkisar antara 26,05-32,20%. Hasil penelitian menunjukkan bahwa penambahan emulsi lemak dan ekstrak pankreas sebesar 9% berpengaruh nyata dan mampu meningkatkan keragaan biometrik, efisiensi pakan, mempercepat pertumbuhan, dan mereduksi limbah organik benih ikan sidat sebesar 80,47%., Measures to reduce organic waste from raising glass eel can be made by increasing feed efficiency in aquaculture activities. This study aims to analyze the impact of fat emulsion and chicken pancreas extract on artificial feed on biometric performance, growth, feed efficiency, and waste production of eel fish fry. This research was conducted from January to May 2023. This research used a completely randomized design (CRD) with 5 feed treatments based on different enzyme concentrations, control, 0%, 3%, 6%, and 9%. Condition factor values ranged from 0.09-0.12, relative gut length (PUr) ranged from 17.58-19.85%, relative gut-weight (BUr) ranged from 24.16-31.82%, relative heart weight (BJr) ranged from 3.71-6.00%, and relative liver weight (BHr) ranged from 26.05-32.20%. The results showed that adding fat emulsion and pancreas extract at 9% significantly improved biometric performance, feed efficiency, accelerated growth, and reduced organic waste of glass eel by 80,47%.
Keyword: glass eel, growth, pancreas extract, waste water

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