Judul: Pemberian Pakan Pelet dengan Sumber Protein Berbeda terhadap Kinerja Pertumbuhan Ikan Sidat Anguilla bicolor bicolor Stadia Yellow eel
Abstrak: The main problems found in Indonesian shortfin eel production were slow growth rate and relatively high feed conversion ratio. Feed is one of main aspects which directly affects growth rate. The purpose of the recent study was to find out the best main protein source for Indonesian shortfin eel feed in form of pellets between shrimp meal, imported fish meal, or combination between shrimp meal, imported fish meal and local fish meal to improve the growth rate of Indonesian shortfin eel at yellow eel stage. Main protein sources used for feed production in the recent study were shrimp meal, imported fish meal, and combination of shrimp meal, imported fish meal and local fish meal. Commercial feed were also used as control. Research was performed using 8 units of aquarium with dimension of 90x50x40 cm3 with total water volume of 120 liters. The average weight of eels used in the recent study was 100,99 ± 0,88 gram/eel. Observed parameters in the recent study consisted of survival rate, daily growth rate, feed conversion ratio, and water quality parameters (water physics and chemistry). Based on overall observed parameters scoring, feed with main protein source of imported fish meal were the best treatment in the recent study to improve growth rate of Indonesian shortfin eel at yellow eel stage using feed in form of pellets. Therefore, imported fish meal could be utilized as main protein source in Indonesian shortfin eel feed production because it was estimated to contain the most compatible nutrient composition with the growth requirements of Indonesian shortfin eel
Keyword: growth performance, pellet, protein source, eel

Judul: Kinerja Produksi Ikan Sidat Anguilla bicolor bicolor Diberi Pakan Berprotein 38,5%, 42,5%, dan 46,5% pada Sistem Kolam Air Mengalir
Abstrak: Eel is a commodity that high value and favored international markets, but production still can not fill market demand. The problems most often occur in the cultivation of eels is on a slow growth, high feed conversion, and low survival rates. The problems affecting the production performance is by increasing maintenance time and cost of production. Fish feed is an important factor in cultivation. Feeding with appropriate levels of protein is expected to increase growth so as to reduce production costs and improve production performance. This study uses a completely randomized design with treatments of feed that has a different protein content, i.e. 38.5%, 42.5%, and 44.5%, respectively repeated 2 times. Fish reared in concrete ponds dimensions 2 m x 2 m x 1.8 m as many as six in a pool of water flowing at the rate of 30 L/min. Eel fish used have a weight of 65.3 ± 2.73 g/fish with a density of 10 kg/m3. Feed given 4 times a day, ie at 05.00, 11:00, 16:00 and 21:00 are at satiation method. Fish maintained for 30 days with sampling every 15 days. Parameters used include survival, growth rate, diversity coefficient weights, feed conversion and water quality. The results showed differences in the protein content of the feed did not significantly affect survival, and diversity coefficient, but the real effect on the growth rate, feed intake and feed conversion. The best treatment (P<0.05) is the feed with protein content of 46.5% resulted in a 0.63% growth rate and ratio feed conversion of 2.18.
Keyword: eel fish, ratio feed conversion, growth, protein content

Judul: Cycle Hamilton pada Graf Lengkap, Graf Regular, dan Graf 2-Connected 4-Regular Berorder Kurang dari Sepuluh
Abstrak: Suatu graf disebut graf Hamilton apabila graf tersebut memuat cycle Hamilton, yaitu cycle yang melewati setiap vertex tepat satu kali. Menentukan keberadaan cycle Hamilton pada suatu graf dapat menggunakan syarat cukup yang berupa teorema-teorema yang telah diperkenalkan sejak tahun 1950-an. Beberapa syarat cukup yang dibahas dalam karya ilmiah ini adalah syarat cukup yang berhubungan dengan graf lengkap dan graf regular. Suatu graf lengkap berorder 𝑛������ ≥ 3 dan graf r-regular berorder 𝑛������ ≤ 2𝑟������ + 1 merupakan graf Hamilton, Karena kedua graf tersebut memuat cycle Hamilton. Selanjutnya, syarat cukup tersebut digunakan untuk menentukan keberadaan cycle Hamilton pada graf 2-connected 4- regular berorder kurang dari 10.
Keyword: graf Hamilton, graf regular, graf lengkap, graf 2-connected 4-regular