Judul: Growth Performance of Common Carp Cyprinus carpio With Four Different Commercial Feeds
Abstrak: Pakan yang diberikan pada ikan mas harus memiliki kandungan nutrien yang dapat dicerna dengan baik oleh ikan mas sehingga ikan mas dapat tumbuh secara optimal. Penelitian ini bertujuan mengevaluasi kinerja pertumbuhan ikan mas (Cyprinus carpio) yang diberi pakan empat merek berbeda dengan kandungan protein yang sama. Penelitian menggunakan rancangan acak lengkap (RAL) dengan empat perlakuan dan tiga ulangan, yaitu pakan komersial A (27,88%), pakan komersial B (27,86%), pakan komersial C (27,94%), dan pakan komersial D (27,85%). Ikan mas yang digunakan memiliki bobot 13,27 ±0,01 g/ekor dengan padat tebar 15 ekor per akuarium, dipelihara selama 50 hari. Parameter yang diamati, yaitu rasio konversi pakan (RKP), tingkat kelangsungan hidup (TKH), jumlah konsumsi pakan (JKP), laju pertumbuhan spesifik (LPS), rasio efisiensi protein (REP), retensi protein (RP), retensi lemak (RL), dan average daily gain (ADG). Pemberian pakan D menunjukkan kinerja pertumbuhan pada ikan mas yang lebih baik dibandingkan dengan pakan lainnya., The feed given to common carp must contain nutrients that can be digested properly by common carp so that common carp can grow optimally. This study aims to evaluating the performance of common carp (Cyprinus carpio) growth when provided with four different brands of feed with the same protein content. The study used a completely randomized design (CRD) with four treatments and three replications, namely commercial feed A (27,88%), commercial feed B (27,86%), commercial feed C (27,94%), and commercial feed D. (27,85%). The common carp used weighed 13,27 ± 0.01 g/individuals with a stocking density of 15 individuals per aquarium, reared for 50 days. Parameters observed were feed conversion ratio (FCR), survival rate (SR), total feed consumption (TFC), specific growth rate (SGR), protein efficiency ratio (PER), protein retention (PR), fat retention (FR), and average daily gain (ADG). D feeding showed better growth performance in common carp compared to other feeds
Keyword: Kinerja pertumbuhan, Ikan mas, Pakan

Judul: Kinerja pertumbuhan ikan mas (Cyprinus carpio) yang diberi pakan komersial berbeda di Waduk Cirata, Jawa Barat.
Abstrak: Budidaya ikan intensif memerlukan pakan berkualitas tinggi dengan kandungan nutrien yang tepat untuk menunjang pertumbuhan. Penelitian ini bertujuan membandingkan kinerja pertumbuhan ikan mas (Cyprinus carpio) yang dipelihara di keramba jaring apung (KJA) di Waduk Cirata, Jawa Barat dengan pemberian pakan komersial berbeda. Penelitian ini menggunakan empat pakan komersial yang berbeda, yaitu: pakan komersial A (kadar protein 28,10%), perlakuan B (kadar protein 28,80%), perlakuan C (kadar protein 28,90%), dan perlakuan D (kadar protein 29,12%). Bobot ratarata ikan yang digunakan pada awal tebar adalah 23 g, petakan KJA yang digunakan berukuran 3 × 3 × 3 m. Frekuensi pemberian pakan adalah tiga kali sehari (08.00, 12.00, 17.00) dengan pemberian pakan secara at satiation selama 100 hari pemeliharaan. Hasil penelitian menunjukkan bahwa perlakuan D (29,12%) memberikan performa biomassa akhir, bobot rata-rata, laju pertumbuhan spesifik, serta feed cost per gain dan nilai konversi pakan terbaik dibandingkan tiga perlakuan lainnya. Berdasarkan hasil penelitian yang diperoleh dapat disimpulkan kinerja pertumbuhan tertinggi didapatkan pada perlakuan pakan komersial D dengan kadar protein 29,12%.
Keyword: Common carp, commercial feeds, floating net cages, protein content

Judul: Utilization of terra/MODIS L1B data for analysis of horizontal wind profile in the troposphere
Abstrak: This study was concerned with horizontal wind derived from data collected with the Moderate-resolution Imaging Spectroradiometer (MODIS) on board the NASA’s Earth Observation System (EOS)-Terra satellite. The aim of this study is to develop a method for the estimation of horizontal wind movement in the troposphere based on Navier-Stokes equation. The method was applied to a calibrated and geolocated Terra/MODIS L1B 1 km data set. The data inputs to estimate surface temperature are retrieved from TIR (Thermal Infrared) bands 31 (10.780 μm to 11.280 μm) and 32 (11.770 μm to 12.270 μm). The obtained surface temperatures were later used to approximate geopotential height on a constant-pressure surface by using the modified Poisson equation. The main assumptions used are the hydrostatic equilibrium, ideal gas law, constant lapse rate and constant acceleration of gravity. Based on the distribution of geopotential height, the pressure gradient force is measured by the gradient of geopotential on an isobaric coordinate to present the horizontal wind profile. For certain topographic areas especially in the mountain ranges, there was a disadvantage of using pressure as a vertical coordinate which lead to inaccuracy. In spite of that, Terra/MODIS L1B data with 1 km spatial resolution can be used to estimate the horizontal wind movement in the troposphere.
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