Judul: Penambahan probiotik dengan dosis berbeda terhadap kinerja pertumbuhan ikan nila merah (Oreochromis niloticus)
Abstrak: This research aims to test the effect of the addition of probiotics with different doses on the growth performance of Red tilapia (Oreochromis niloticus). The feed used in this research is the artificial diets with protein levels of 31.75% in added probiotic commercial Power Lac® with a different dose of a feed A (0 g/kg feed), B (0,25 g/kg feed), C (0,50 g/kg feed), and D (1 g/kg feed). Fish used is juvenile red tilapia with average body weight of 13,67±0,22 g were reared in the 3x2x0,7 cm3 bath with density of 50 fish/bath. Fish were reared for 151 days and feed 3 times daily at satiation levels. The results of research showed that treatment C with the addition of probiotic 0,50 g/kg feed gives the best results compared with others in improving the growth performance of red tilapia (Oreochromis sp).
Keyword: red tilapia, growth, probiotic

Judul: Growth performance and antioxidants of red tilapia (Oreochromis sp.) fed  with citral addition
Abstrak: Citral merupakan salah satu bahan aktif yang terkandung dalam berbagai bahan alami seperti serai dan kulit jeruk. Citral berpotensi untuk digunakan sebagai fitoadditive pada pakan untuk meningkatkan kinerja pertumbuhan melalui peningkatan pemanfaatan karbohidrat pakan dan antioksidan pada ikan nila merah. Penelitian ini bertujuan mengevaluasi pengaruh penambahan citral pada pakan terhadap kinerja pertumbuhan dan aktivitas antioksidasi pada juvenil ikan nila merah (Oreochromis sp.). Penelitian ini menggunakan lima perlakuan pakan dengan tingkat penambahan citral yang berbeda dengan empat ulangan. Dosis citral yang digunakan yaitu 0 mg/kg (kontrol), 25 mg/kg, 50 mg/kg, 75 mg/kg, dan 100 mg/kg pakan. Ikan nila yang digunakan berukuran 1,21 ± 0,02 g sebanyak 15 ekor yang dipelihara dalam akuarium 0,8 × 0,4 × 0,35 m3 selama 60 hari. Ikan diberi pakan secara at-satiation dengan frekuensi pemberian pakan tiga kali sehari. Hasil penelitian ini menunjukkan bahwa perlakuan penambahan fitoadditive citral pada pakan tidak berpengaruh pada biomassa akhir (252-286 g), bobot individu akhir (19,82-22,05 g), tingkat kelangsungan hidup (85- 93 %), rasio efisiensi protein (2,66-3,15), aktivitas antioksidasi (114-119 U/ g protein) dan rasio konversi pakan (1,20-1,15) pada ikan nila merah. Berdasarkan hasil tersebut maka dapat disimpulkan bahwa penambahan citral pada pakan sebanyak 25 - 100 mg/kg pakan tidak berpengaruh nyata terhadap kinerja pertumbuhan, pemanfaatan pakan dan aktivitas antioksidan pada juvenil ikan nila merah., Citral is one of the active ingredients contained in various natural ingredients such as lemongrass and orange peel. Citral has the potential to be used as a phytoadditive in feed to improve growth performance by increasing the utilization of feed carbohydrates and antioxidants in red tilapia. This study aims to evaluate the effect of adding citral to feed on the growth performance and anti-oxidation activity of red tilapia (Oreochromis sp.). This study used five dietary treatments with different levels of citral with four replicates. Citral doses used were 0 mg/kg (control), 25 mg/kg, 50 mg/kg, 75 mg/kg, and 100 mg/kg of feed. 15 tilapia fish measuring 1,21 ± 0,02 g were reared in an aquarium of 0,8 × 0,4 × 0,35 m3 for 60 days. Fish were fed at satiation with a frequency of three times a day. The results of this study indicated that the addition of phytoadditive citral had no effect on final biomass (252-286 g), final mean body weight (19,82-22,05 g), survival (85-93 %), protein efficiency ratio (2,66-3,15), antioxidant activity (114-119 U/g protein) and feed conversion ratio (1,20-1,15) in red tilapia. Based on these results, it can be concluded that the addition of citral to feed as much as 25-100 mg/kg of feed has no significant effect on growth performance, feed utilization and antioxidant activity in red tilapia.
Keyword: antioxidation, citral, growth, red tilapia

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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