Judul: Parameter imunitas, sintasan, dan pertumbuhan udang galah Macrobrachium rosenbergii yang diberi pakan dengan suplementasi β-glukan 0%, 0,075%, 0,15%, dan 0,225%
Abstrak: Giant freshwater prawn Macrobrachium rosenbergii is one of the prioritized freshwater commodities with high economical value in Indonesia. This study evaluated the effect of β-glucan supplementation (0%, 0,075%, 0,15%, and 0,225%) on the immune parameters, survival, and growth of giant freshwater prawn. Giant prawn juvenile with an initial body weight of 1.25 ± 0.041 g was stocked in a 150 Litre aquarium with a density of 16 animals/aquarium. Phenoloxydase activity, total and differential haemocyte counts, survival, and specific growth rate were measured and calculated on the final day of experiment (day 42). Phenoloxydase activity, total and differential haemocyte counts of glucan treatments were higher than control (0%), whereas no significant difference was observed in survival. Administration of β-glucan for 42 days resulted in a higher prawn growth rate (p<0.05) with the highest yield observed was on β-glucan 0,015% treatment.
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Judul: Parameter Imunitas, Sintasan, dan Pertumbuhan Udang Galah Macrobrachium rosenbergii yang Diberi Pakan dengan Suplementasi β-Glukan 0%, 0,075%, 0,15%, dan 0,225%.
Abstrak: Udang galah Macrobrachium rosenbergii merupakan salah satu komoditas perikanan air tawar unggulan yang bernilai ekonomis tinggi. Penelitian ini dilakukan untuk mengkaji pengaruh penambahan β-glukan sebesar 0%, 0,075%, 0,15%, dan 0,225% pada pakan terhadap parameter imunitas dan kinerja pertumbuhan udang galah. Juvenil udang dengan bobot tebar rata-rata 1,25 ± 0,041 g dipelihara dalam akuarium volume 150 Liter yang tersusun dalam sistem resirkulasi dengan jumlah tebar 16 ekor per akuarium. Parameter yang diamati adalah aktivitas phenoloxydase (PO), total haemocyte count (THC), diferensial haemocyte count (DHC), sintasan, dan laju pertumbuhan spesifik pada udang galah. Hasil penelitian selama 42 hari menunjukkan bahwa nilai aktivitas PO, THC, dan DHC pada perlakuan yang diberikan β-glukan cenderung lebih tinggi dibandingkan dengan kontrol. Sintasan masing-masing perlakuan tidak berbeda nyata dengan perlakuan kontrol. Laju pertumbuhan spesifik tertinggi terdapat pada perlakuan β-glukan 0,15% sebesar 1,92%/hari dan berbeda nyata dengan kontrol.
Keyword: Giant freshwater prawn, β-glucan, specific growth rate, haemocyte, phenoloxydase activity

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