Judul: Efektivitas Penambahan Mannan Oligosakarida dan Vitamin C sebagai Feed Additive terhadap Kinerja Pertumbuhan ikan lele (Clarias sp.)
Abstrak: This study aimed to test of addition mannan oligosakarida (MOS) and vitamin C as feed additive on growth performance of Catfish (Clarias sp.). The feed used in this study is comercial feed with 39.4% protein dry weight content with the addition of feed additive is 3.6 g/kg. A total of 15,000 catfish (0.268 ± 0.26 gram) was reared for 20 days in tank (3 x 6x 0.5 m3) which has been equiped with aeration system. Fish feeding was conducted three times at 06.00, 16.00 and 24.00 (at satiation). The experimental design was a completely randomized design with 2 treatments and duplicate. The result showed that the amount of feed intake, protein retension and daily growth rate not significantly different (P>0,05). However, the biomass, feed conversion ratio (FCR) and survival rate in catfish with addition of feed additive in feed have significantly different (P<0,05). This result showed that the addition of MOS and vitamin C in catfish feed can decrease FCR and increase final biomass and survival rate (SR).
Keyword: MOS, vitamin C, feed additive, growth performance, Clarias sp.

Judul: GROWTH PERFORMANCE OF CATFISH (Clarias gariepinus) WITH ADDITION OF IRON (Fe) MINERALS IN FEED
Abstrak: Pengaruh penggunaan mikro mineral Fe (zat besi) pada pakan sangat mempengaruhi kinerja produksi pertumbuhan ikan lele (Clarias gariepinus). Penelitian ini bertujuan menentukan dosis yang tepat terkait penambahan zat besi (Fe) pada pakan yang mampu meningkatkan pertumbuhan ikan lele (Clarias gariepinus). Formulasi pakan dengan kadar Fe berbeda, sebagai perlakuan dalam penelitian ini, menggunakan lima perlakuan dengan masing-masing dosis 0, 15, 30, 60, dan 120 mg kg-1 yang diberikan pada benih ikan lele dengan bobot rata rata awal 9,49±0,01 g sebanyak 15 ekor/akuarium dengan ukuran 90x45x45 cm dan ketinggian air 30 cm. Setelah masa pemeliharaan selama 60 hari, persentase peningkatan bobot sebanyak 409,1% pada perlakuan Fe 30 mg kg-1 pakan, sedangkan pada perlakuan kontrol yang tidak dilakukan penambahan Fe pada pakan, mengalami peningkatan sebesar 309,1%. Hasil penelitian menunjukkan bahwa parameter kinerja pertumbuhan (biomassa akhir, bobot individu akhir, tingkat kelangsungan hidup, dan laju pertumbuhan spesifik) pada ikan lele yang diberi dosis Fe menunjukkan hasil yang berbeda nyata (p<0,05) terhadap ikan lele dengan perlakuan kontrol. Berdasarkan hasil dari penelitian ini penggunaan dosis terbaik terhadap penambahan Fe pada pakan yaitu 30 mg kg-1 pakan., The influence of micro mineral Fe (iron) usage in feed greatly affects the performance and growth of catfish (Clarias gariepinus). This study aims to determine the appropriate dosage of iron (Fe) supplementation in the feed that can enhance the growth of catfish (Clarias gariepinus). Feed formulations with different Fe levels were used as treatments in this research, consisting of five treatments with doses of 0, 15, 30, 60, and 120 mg kg-1, given to catfish juveniles with an average initial weight of 9.49±0.01 g, totaling 15 individuals per aquarium measuring 90x45x45 cm with a water height of 30 cm. After a 60-day rearing period, the percentage of weight gain was 409.1% in the treatment with 30 mg kg-1 Fe in the feed, while the control treatment without Fe supplementation in the feed experienced an increase of 309.1%. The research results indicate that growth performance parameters (final biomass, final individual weight, survival rate, and specific growth rate) in catfish given Fe doses show statistically significant differences (p<0.05) compared to the control treatment. Based on the findings of this study, the optimal dosage for Fe supplementation in the feed is 30 mg kg-1.
Keyword: ikan lele, pertumbuhan, zat besi, catfish, growth, iron, catfish, growth, iron

Judul: Simulasi Protokol Autentikasi Pelanggan pada Voice Privacy
Abstrak: Existing design of the telephone public network is susceptible to eavesdropping on its voice stream. Consequently, any wire taper can listen to supposedly private conversation. In order to prevent such eavesdropping, we propose a protocols and its implementation for end-to-end voice privacy authenticate as a service available for interested subscribers. Our protocols consist of customer enrollment system, customer authentication system and simulation voice privacy. Protocols that we made are adaptation from Sharif and Wijekesera journal with the title Providing Voice Privacy as a Service over the Public Telephone Network. The result of the process shows how the customer enrolls and how the system process the password, how the system authenticate customer simulate voice privacy.
Keyword: