Judul: Palatabilitas dan Pertumbuhan Sidat Anguilla marmorata dengan Pemberian Atraktan Tepung Cumi dan Tepung Udang Rebon
Abstrak: . Eel is a commodity that high value around and favored international markets. The most dominant issues in eel farming is the initial phase separating larval stadia and Elver. This is because at the stadia is difficult eel adapt to artificial feed (pellets), resulting in eels have a low body weight and slow growth. Slow growth greatly affects the performance of the production of increased maintenance time and cost of production. By providing attractants expected to increase palatability so that growth can be improved. The study was conducted using a completely randomized design with treatments without feed attractants (K), feed with shrimp powder attractant rebon 2% (R), feed attractant flour with squid as much as 2% (C), as well as the feed attractants squid and small shrimp (CR) , each of which was repeated 3 times. Fish kept in aquariums measuring 100x50x40 cm3 with a recirculation system as much as 60 individuals per aquarium with an average weight of 3 g ± 0:50. Feed given 4 times a day, ie at 05.00, 11:00, 16:00 and 21:00 are at satiation (sekenyangnya). Fish maintained for 45 days with sampling every 15 days. The results showed the amount of feed intake ranged from 101.49 g to 159.66 g, average daily growth rate ranged from 0.64% to 0.92%, feed efficiency ranged from 64.06% to 76.77%, and the survival rate ranged from 91.82% to 99.44%. Treatment gives the best effect on the amount of feed intake, daily growth rate and feed efficiency were treated with 2% squid meal attractant.
Keyword: Anguilla marmorata, attractant, palatability, growth

Judul: Produksi Ikan Sidat Anguilla marmorata Stadia Elver dan Anguilla bicolor bicolor Stadia Yellow Eel dengan Padat Tebar 0.5, 1.0, 1.5 g/l pada Sistem Resirkulasi
Abstrak: Anguilla spp is a highly economical value fish resource in Indonesia. Eel is a diadromous fish or fish that spawn in the sea, grow and thrive in fresh water, and return to the sea to spawn. The objective of this study was to determine the most optimum stocking density for two different species of eel A. Marmorata and species of eel A. bicolor bicolor in recirculating aquaculture system. Three stocking densities were applied in this study 0.5, 1.0, and 1.5 g/l. The experiments were performed using a concrete tank of 1.7 x 1.7 x 1 m3 at volume of 1,500 liters of circulating water. The fish used was elver stage eels (1.2-1.5 g) and yellow eel stage (15-17 g). The fish were feed with paste artificial feed at a restricted feeding level. The fish survival was relatively high (elver: 69.5 to 91.28% and yellow eel: 75.68 to 92.50%). The specific growth rate was also relatively good (elver: 0.57 to 0.61% and yellow eel: 3.48 to 3.77%). Feed efficiency was low for elver size (0.86 to 3.88%) but considerably high for yellow eel stage fish (29.11 to 50.40%). The highest growth and productivity of eel culture in a recirculating aquculture system was shown at a stocking density of 1.0 kg/m3.
Keyword: recirculating., rearing density, productivity, eel

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