Judul: Evaluation of Gonad Development of Eels (Anguilla bicolor bicolor) Fed with Formulated Feed with Turmeric Supplementation (Curcuma longa)
Abstrak: Permasalahan dalam kegiatan pembenihan sidat salah satunya adalah sulit didapatkan induk matang gonad dalam wadah budidaya dan pertumbuhannya yang lambat. Kunyit yang mengandung kukurmin diketahui bersifat estrogenik, dapat menginduksi vitellogenesis pada ikan. Penelitian ini bertujuan untuk menganalisis pengaruh suplementasi kunyit dalam pakan formulasi IPB terhadap perkembangan gonad ikan sidat. Ikan sidat berukuran 455±245 g/ekor (60.8±44.5 cm) diberi perlakuan pakan komersial (K), pakan formulasi non suplementasi (NS), dan pakan disuplementasi kunyit (S). Setiap perlakuan terdiri dari 10 ekor sidat dengan individu sebagai ulangan. Ikan dipelihara dalam kolam beton berukuran 3 x 1.5 x 1.3 m dan diberi pakan 1% bobot tubuh per hari, pagi dan sore. Variabel yang dianalisis adalah pertumbuhan bobot mutlak (PBM), pertumbuhan panjang mutlak (PPM), digestive track somatic index (DTSI), indeks hepatosomatik (HIS), dan indeks gonadosomatik (IGS). Hasil penelitian menunjukkan bahwa pakan formulasi IPB disuplementasi kunyit mengindikasikan peningkatan PBM, PPM, DTSI, dan GSI dibandingkan dengan pakan komersial. Suplementasi kunyit dapat digunakan untuk mempercepat pematangan gonad sidat., One of the problems in eel hatchery activities is that it is difficult to obtain mature gonads in cultivation containers and their growth is slow. Turmeric containing curcurmin is known to be estrogenic and can induce vitellogenesis in fish. This study aims to analyze the effect of turmeric supplementation in IPB formulated feed on the development of eel fish gonads. Eel fish measuring 455 ± 245 g/fish (60.8 ± 44.5 cm) were treated with commercial feed (K), nonsupplemented formulated feed (NS), and turmeric supplemented feed (S). Each treatment consisted of 10 eels with individuals as replicates. Fish are kept in concrete ponds measuring 3 x 1.5 x 1.3 m and fed 1% of body weight per day, morning and evening. The variables analyzed were absolute weight growth (PBM), absolute length growth (PPM), digestive track somatic index (DTSI), hepatosomatic index (HIS), and gonadosomatic index (IGS). The research results showed that IPB formulated feed supplemented with turmeric indicated an increase in PBM, PPM, DTSI, and GSI compared to commercial feed. Turmeric supplementation can be used to accelerate eel gonad maturation.
Keyword: pakan, pertumbuhan, sidat, kunyit, gonad

Judul: Induction of Gonadal Maturation of Eel Anguilla bicolor bicolor with Oodev and Estradiol-17β through Meal
Abstrak: Ikan sidat (Anguilla sp.) betina matang gonad berukuran >500 g memerlukan waktu pemeliharaan yang panjang sehingga diperlukan metode untuk mempercepat pematangan gonad. Salah satu upaya tersebut yaitu melalui manipulasi reproduksi secara hormonal. Penelitian ini bertujuan mempercepat pematangan gonad sidat menggunakan hormon Estradiol-17β dan Oodev. Sidat berukuran 250-290 g diinduksi dengan hormon Oodev dan Estradiol-17β metode oral melalui pakan yang disuplementasi dengan tepung kunyit 5 g/kg pakan. Penelitian menggunakan rancangan acak lengkap (RAL) tiga perlakuan dan satu kontrol. Padat tebar sebanyak 10 ekor/perlakuan. Dosis hormon perlakuan dicampur dalam pakan terdiri dari kontrol (0 mL/kg ikan hormon), hO2 (1 mL/kg ikan Oodev (PMSG + AD), hO1E3 (1 mL/kg ikan (Oodev (PMSG + AD) + 3 mg E2), dan hO1E6 (1 mL/kg ikan (Oodev (PMSG + AD) + 6 mg E2). Hasil menunjukkan bahwa perlakuan hO1E6 memberikan nilai terbaik untuk LPS (4,004±0,96%/hari), AG (126,456±29,098 cm), IGS (1.30±0,51%), persentasi betina 80%, nilai hematokrit (39,57±3,36%) dan eritrosit ((1,83±0,21)x106 sel/mm3 ) (P<0,05), sedangkan untuk parameter PPM, IHS, diameter mata, faktor kondisi, DTSI tidak berbeda nyata (P>0,05). Pemberian kombinasi hormon 1 mL/kg ikan Oodev dan 6 mL/kg ikan Estradiol-17β dapat mempercepat pertumbuhan bobot, pematangan gonad, dan feminisasi sidat. Kombinasi hormon tersebut dapat menjadi alternatif untuk mempercepat pertumbuhan bobot dan pematangan gonad pada kegiatan budidaya pembesaran dan pembenihan sidat., Eel (Anguilla sp.) mature female gonads measuring >500 g require a long maintenance time so a method is needed to accelerate gonadal maturation. One of these efforts is through hormonal manipulation of reproduction. This study aims to accelerate the gonadal maturation of eels using the hormones Estradiol-17β and Oodev. Eels measuring 250-290 g were induced with the hormone Oodev and Estradiol-17β orally through feed supplemented with turmeric flour 5 g/kg feed. The experimental design used was a completely randomized design (CRD) with three treatments and a control with 10 animals/treatment. The dose of treatment hormone mixed in the feed consisted of control (0 mL/kg fish hormone), hO2 (1 mL/kg Oodev fish (PMSG + AD), hO1E3 (1 mL/kg fish (Oodev (PMSG + AD) + 3 mg E2 ), and hO1E6 (1 mL/kg fish (Oodev (PMSG + AD) + 6 mg E2). The results showed that hO1E6 treatment gave the best value for SGR (4.004±0.96%/day), AG (126.456±29.098 cm ), GSI (1.30±0.51%), 80% female percentage, hematocrit value (39.57±3.36%) and erythrocytes ((1.83±0.21)x106 cells/mm3 ) (P<0 0.05), while for parameters Lm, IHS, eye diameter, condition factor, DTSI was not significantly different (P>0.05).The administration of a combination of hormones 1 mL/kg Oodev fish and 6 mL/kg Estradiol-17β fish could accelerate weight growth, gonadal maturation, and eel feminization.The combination of these hormones can be an alternative to accelerate weight growth and gonad maturation in eel rearing and hatchery cultivation activities.
Keyword: Anguilla bicolor, Estradiol-17β, gonadal maturation, growth, Oodev

Judul: Algoritme LLL dan Aplikasinya dalam Pembongkaran Sistemkripto Knapsack Merkle-Hellman
Abstrak: LLL algorithm is an algorithm that can be used to determine an approximation of the shortest vector in a lattice. Size reduction algorithm is an important step of LLL algorithm. The LLL algorithm can be applied in many elds. This paper shows how LLL algorithm can be used in breaking one of the famous cryptosystem, namely the Merkle-Hellman knapsack cryptosystem. Merkle-Hellman knapsack cryptosystem is an asymmetric cryptosystem using the subset sum problem as the support of security. Subset sum problem can be transformed into the problem of determining shortest vector in a lattice, so that LLL algorithm can also be used to solve the subset sum problem. Since the subset sum problem can be easily solved by applying LLL algorithm, then the Merkle-Hellman knapsack cryptosystem can also be easily be destructed.
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