Judul: Effectiveness of Giving Thyroxine Hormone and Recombinant Growth Through Feed on the Spawning of Poecilia reticulata Guppy Fish
Abstrak: Ikan guppy merupakan ikan hias air tawar yang memiliki corak menarik dan menjadi salah satu ikan hias air tawar yang memiliki potensi ekspor yang cukup menjanjikan. Permasalahan pada ikan guppy adalah lambatnya ikan mulai berkembang biak dan membutuhkan waktu yang cukup lama yaitu 21–30 hari setelah proses melahirkan untuk melahirkan kembali. Penelitian ini bertujuan untuk menguji efektivitas pemberian tiroksin dan pertumbuhan rekombinan melalui pakan terhadap pemijahan ikan guppy. Penelitian ini dilakukan dengan metode eksperimental menggunakan rancangan acak lengkap (RAL) dengan 5 perlakuan: 15 mg tiroksin dan 1,5 mg/kg rGH, 20 mg tiroksin dan 2 mg/kg rGH, 25 mg tiroksin dan 2,5 mg/kg rGH, 30 mg tiroksin dan 3 mg/kg rGH, dibandingkan dengan perlakuan kontrol tanpa pemberian hormon tiroksin dan rGH dengan 3 ulangan untuk masing-masing perlakuan. Parameter yang diamati meliputi rematurasi, jumlah larva dan abnormalitas. Hasil terbaik dari parameter rematurasi terdapat pada perlakuan 30 mg tiroksin dan 3 mg/kg rGH. Parameter jumlah larva yang terbaik terdapat pada perlakuan 25 mg tiroksin dan 2,5 mg/kg rGH (37 ekor) dan meningkat 37% dari kontrol akan tetapi tidak berbeda nyata, sedangkan larva yang dihasilkan tidak ada yang mengalami abnormalitas., Guppy fish are freshwater ornamental fish that have attractive patterns and are one of the freshwater ornamental fish that have quite promising export potential. The problem with guppy fish is that the fish start to reproduce slowly, and it takes quite a long time, namely 21–30 days after giving birth to give birth again. This research aims to test the effectiveness of providing thyroxine and recombinant growth through feeding on guppy fish spawning. This research was carried out using experimental methods using a completely randomized design (CRD) with 5 treatments: 15 mg thyroxine and 1.5 mg/kg rGH, 20 mg thyroxine and 2 mg/kg rGH, 25 mg thyroxine and 2.5 mg/kg rGH, 30 mg thyroxine and 3 mg/kg rGH, compared with the control treatment without administration of thyroxine and rGH hormones with 3 replications for each treatment. Parameters observed included rematuration, number of larvae and abnormalities. The best results for rematuration parameterswere found in the treatment of 30 mg thyroxine and 3 mg/kg rGH. The best parameters for the number of larvae were found in the treatment of 25 mg thyroxine and 2.5 mg/kg rGH (37 individuals) and increased by 37% from the control but were not significantly different, while the larvae produced did not experience any abnormalities.
Keyword: abnormality, guppy fish, number of larvae, rematuration

Judul: The Effectiveness of Thyroxine Hormone (T4) and Recombinant Growth Hormone (rGH) on Growth of Betta Fish (Betta sp.) Larvae
Abstrak: Ikan cupang giant merupakan jenis ikan cupang yang banyak diminati dan dapat diperoleh melalui perkawinan silang, namun keturunannya memiliki laju pertumbuhan yang lebih rendah dibandingkan dengan induknya. Hal tersebut dapat diatasi dengan pemberian hormon untuk meningkatkan laju pertumbuhan. Penelitian ini bertujuan mengidentifikasi efektivitas perendaman hormon tiroksin dan hormon pertumbuhan rekombinan terhadap pertumbuhan larva ikan cupang. Penelitian ini dilakukan dengan metode eksperimental menggunakan Rancangan Acak Lengkap (RAL) dengan 5 perlakuan: A, kontrol; B, 10 mg/L rGH; C, 0,05 mg/L T4 + 10 mg/L rGH; D, 0,1 mg/L T4 + 10 mg/L rGH; dan E, 0,15 mg/L T4 + 10 mg/L rGH dan 5 ulangan. Larva yang berumur 7 hari berukuran bobot rata-rata sebesar 0,043±0,001 g dan panjang rata-rata 5,721±0,001 mm dilakukan perendaman selama 24 jam dengan kepadatan 50 ekor/akuarium. Hasil terbaik terdapat pada perlakuan D yang dilihat dari parameter pertumbuhan berat mutlak (2,153 g), pertumbuhan panjang mutlak (35,388 mm), pertumbuhan panjang relative (6,297%) dan laju pertumbuhan harian (13,67%)., Giant betta fish is a type of betta fish that is in great demand and can be obtained through cross-breeding, but the offspring have a lower growth rate than the parent. This can be supported by giving hormones to increase the growth rate. This study aims to identify the effectiveness of soaking the thyroxine hormone and recombinant growth hormone on the growth of Betta fish larvae. This research was conducted with an experimental method using a completely randomized design (RAL) with 5 treatments: A, control; B, 10 mg/L rGH; C, 0.05 mg/L T4 + 10 mg/L rGH; D, 0.1 mg/L T4 + 10 mg/L rGH; and E, 0.15 mg/L T4 + 10 mg/L rGH and 5 replications. 7 days old larvae with average 0,043±0,001 g of weight and 5,721±0,001 mm of length were soaked for 24 hours. The best results were found in treatment D as seen from the parameters of absolute weight growth (2.153 g), absolute length growth (35.388 mm), relative length growth (6.297%) and daily growth rate (13.67%).
Keyword: Cupang, Tiroksin, Hormon Pertumbuhan Rekombinan, betta, recombinant growth hormone, thyroxine

Judul: Analisis keamanan konstruksi fungsi hash berbasis sandi blok kunci simetrik (Kajian Teoritik)
Abstrak: Hash function is used to secure the integrity and authenticity of a massege, so that the message is save. The message which will be secured, will be attached to hash/message digest/digital signature value fro, the message. A secure hash function is the one which has pre-image resistance, 2nd pre-image resistance and collision resistance. Hash function has been classified into hash keyed function (Message Authentication Codes/MAC) and unkeyed (Modification Detection Codes/MDC)
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