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: Effect of Adding Oodev and Melatonin Through  Feed on The Production and Performance of Fish Seed Guppy (Poecilia reticulata,  Peters 1859)
Abstrak: Ikan gapi (Poecilia reticulata) merupakan salah satu jenis ikan hias air tawar yang banyak dibudidayakan karena mudah dalam proses budidayanya. Permintaan ikan gapi pada tahun 2019 adalah sebanyak 224.000 ekor namun hanya terpenuhi sebanyak 72.099 ekor atau 32,19% dari total permintaan. Selanjutnya permintaan ikan gapi pada tahun 2020 ditargetkan hanya sebanyak 70.311,70 ekor dan hanya terpenuhi sebanyak 61.097,89 ekor atau 86,9% dari total permintaan. Berdasarkan laporan tersebut terlihat bahwa produksi ikan gapi masih sangan rendah sehingga permintaan pasar jadi tidak terpenuhi, oleh karena itu dibutuhkan upaya untuk meningkatkan produksi ikan gapi. Salah satu upaya yang dapat dilakukan untuk meningkatkan jumlah produksi ikan gapi adalah manipulasi hormonal yang bertujuan meningkatkan produksi benih (larva) ikan. Penelitian ini menggunakankombinasi hormon Oodev dan Melatonin yang diduga mampu meningkatkan kinerja reproduksi ikan. Penelitian ini bertujuan mengetahui pengaruh Oodev dan Melatonin dengan dosis berbeda yang dicampur pada pakan terhadap produksi benih ikan gapi dan performa benih yang dihasilkan. Terdapat empat perlakuan berbeda, yaitu kontrol (tanpa penambahan hormon), Oodev 0,5 ml kg-1 + Melatonin 0,25 mg kg-1, Oodev 0,5 ml kg-1 + Melatonin 0,5 mg kg-1, serta Oodev 0,5 ml kg-1+ Melatonin 1 mg kg-1. Hasil penelitian menunjukkan penambahan Oodev dan Melatonin mampu mempersingkat periode waktu kelahiran pertama, meningkatkan produksi benih ikan gapi (15 kali lipat) dari kontrol, meningkatkan produksi anak gapi berjenis kelamin jantan, dan meningkatkan efisiensi biaya produksi ikan gapi dibandingkan kontrol. Dosis Oodev 0,5 ml kg-1 + melatonin 1 mg kg-1 menjadikombinasi terbaik yang menghasilkan jumlah anak tertinggi dan jumlah pendapatan tertinggi dari perlakuan lainnya., Guppy fish (Poecilia reticulata) is one type of freshwater ornamental fish that is widely cultivated because it is easy in the process of cultivation. The demand for guppy fish in 2019 was 224,000 head but only 72,099 head were fulfilled or 32.19% of the total demand. Furthermore, the demand for guppy fish in 2020 is targeted at only 70,311.70 head and only 61,097.89 head or 86.9% of the total demand are fulfilled. Based on these data, it can be seen that guppy fish production is still very low, so that market demand is not being met, therefore efforts are needed to increase guppy fish production. One of efforts to increase the amount of guppy fish production is hormonal manipulation aimed to improving the reproductive ability of fish. This study used a combination of the hormones Oodev and Melatonin which is thought to be able to improve the reproductive performance of fish. This study aims to determine the influence of Oodev and Melatonin with different doses mixed in feed on the production of fish seed guppy and the performance of the resulting seed. There are four different treatments i.e control (without the addition of hormones), the addition of Oodev 0.5 ml kg-1 + Melatonin 0.25 mg kg-1, the addition of Oodev 0.5 ml kg-1 + Melatonin 0.5 mg kg-1, and the addition of Oodev 0.5 ml kg-1 + Melatonin 1 mg kg-1. The results showed the addition of Oodev and Melatonin was able to shorten the time period of first birth, increase the production of guppy fish seeds (15 times), increase the
Keyword: guppy fish, Melatonin, Oodev, reproduction

Judul: Klasifikasi Sidik Jari Menggunakan Support Vector Machine Dengan Feature Berbasis Minutiae Menggunakan Metode Region
Abstrak: Manual fingerprint classification proceeds by carefully inspecting the geometric characteristics of major ridge curves in a fingerprint image. This research proposed an automatic approach of identifying the geometric characteristics of ridges based on minutiae position and angle. Position and angle of minutiae are analyzed using region method. Region was used to discretize the number of minutiae. Positions of minutiae in a region give information about its relation to another region. Angles of minutiae indicate the ridge flow direction. Support vector machine, a binary classifier, is used to classify the fingerprint based on those characteristics. In this research, the classes are left loop, right loop, whorl, arch and tented arch. This research used 2695 fingerprint images from NIST. Classification performance is measured using 3-fold cross validation method. This research achieved 79.7 % accuracy. As we only used local features in this research, further research needs to be conducted especially to investigate global features.
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