Judul: Penggunaan Tepung Ikan dari Sumber Bahan Baku Berbeda dalam Formulasi Pakan terhadap Kinerja Pertumbuhan Ikan Lele Sangkuriang Clarias sp.
Abstrak: Fish meal is one of a decisive factor the quality of artificial fish feed and source of animal protein, some of the fulfillment it was until now is still imports that caused the price more expensive. Therefore, this research aimed to evaluate feed test to the source of fish meal from different raw materials in improving growth performance of sangkuriang catfish Clarias sp. The source of raw materials used is derived from trash fish, salted fish, and head fish that has the potential as one of the local feed raw material. Granting feed test made during the 44 days and fish fed with in ad satiation with the frequency of granting done three times at 08.00 am, 12.00 am, 16.00 pm. Fish test used having biomass as much as 38,49±1,61 g and done maintenance on the aquarium a dimension 60cmx50cmx40cm using recirculation system. The results showed that fish meal derived from trash fish able to replace the commercial fish meal imports this is shown based on the value of performance growth as the number of feed consumption, growth rate daily, long absolute, biomass, retention of proteins, retention of fat, feeding efficiency, feed conversion shows significantly different (P>0.05). However, it doesn’t significantly different on the survival rate of fish (P<0.05). The results of this research show that the use of trash fish meal produce growth best as a source of animal protein that can replace fish meal commercial.
Keyword: catfish, growth, ad satiation, fish meal.

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: Metrik Einstein (Anti-) Self-Dual Berdimensi Empat dengan Metode Cartan
Abstrak: Gravitational field equation can be formulated in differential forms (differential geometry), which describes gravity as a manifestation of the curvature of space-time. Curvature of space-time is characterized by a metric that satisfies the gravitational field equation. With differential forms it can be formulated the (anti-) self-dual Einstein equation, which is a modification of the Cartan structure in (anti-) self-dual basis. Calculation of (anti-) self-dual metric with (anti-) self-dual Einstein equation is simpler than the calculation using Christoffel symbols.
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