Judul: Kajian Kualitas Spermatozoa Ikan Tawes (Barbonymus Gonionotus, Bleeker 1849) Jantan Yang Berasal Pada Dua Kolam Budidaya Berbeda
Abstrak: Barbonymus gonionotus (Bleeker 1849) known as silver barb is one of the economically important freshwater fish that are frowned upon by the community as well as Indonesia. This fish had a good nutrition with 27.87 to 28.10% of protein. The important factor in the aquaculture is the availability of larvae which influence by the quality of spermatozoa. The purpose of this research was to examine the quality of silver barb spermatozoa on two different aquaculture environments) through the study of the semen characteristics including macroscopic and microscopic evaluation such as volume, pH, color, consistency, concentration, motility, morphology and morphometric of silver barbfish spermatozoa. A total of 20 fish from Purwasari and Parung were used in this research. The samples analysis was carried out in the laboratory of Reproductive and Rehabilitation Unit (URR), Faculty of Veterinary Medicine, Bogor Agricultural University. The results showed that all parameters characteristic of silver barb spermatozoa from Purwasari and Parung was significanly different (P<0.05) except for the semen color and consistency, pH, diameter spermatozoa head, concentration of spermatozoa as well as the morphology.
Keyword: semen quality, spermatozoa, fish, Silver barb

Judul: Biologi Reproduksi Ikan Brek (Barbonymus balleroides Cuvier & Val. 1842) Di Sungai Serayu Kabupaten Banjarnegara Provinsi Jawa Tengah
Abstrak: The Serayu River, a major river in Central Java Province, crosses five regencies including Banjarnegara Regency. In Banjarnegara, there was built a reservoir called Panglima Besar Jenderal Soedirman Reservoir. The reservoir construction caused habitat fragmentation which splits Serayu River into two different ecosystems, running water ecosystem and stagnant water ecosystem. Inderectly the habitat fragmentation affects the species existence of fish that lived in the reservoir. Barb is one of the fish species, which found in the Serayu River tends to decrease in population. The aims of this study are to examine reproduction aspects and alternative management of barb in Serayu River. The fish samples were taken from October 2012 to March 2013 in three zones (downstream, middle stream, and upper stream of Jenderal Sodirman reservoir), consisting of 6 stations. Fish samples were caught using nets, gill nets and electrofishing. The samples were analyzed to find out the length, weight, sex ratio, gonad maturity index, fecundity, egg diameter and egg quality. The barbs were caught 1,358 consisted of 642 males and 716 females, with total length varied in the range between 58-245 mm and weight range between 2- 155 g. The most of fish captured were obtained in the upstream zone, consisted of 233 males and 239 females. The growth pattern of male and female fish was a positive allometric. The sex ratio during the study was 1:1.12. Male barb reached first gonad maturity at a size of 152 mm while female fish 169 mm. Based on gonad maturity stage and a peak gonad maturity index, the spawning occurred in October. The fecundity of barb was about 2,760-25,290 eggs and the barb fish as a total spawner. The highest percentage of eggs quality in barb was protein and then followed by fat and carbohydrate respectively. Based on the analysis result, amino acid, and glutamic acid had the highest percentage. Habitats fragmentation influenced barb reproduction.
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Judul: Train Scheduling Using Integer Linear Programming.
Abstrak: Karya ilmiah ini memberikan formulasi masalah penjadwalan kereta api menggunakan model pemrograman linear integer. Penjadwalan kereta api tersebut didasarkan pada jalur tunggal yang menghubungkan antar stasiun. Formulasi yang dibangun bertujuan meminimumkan keterlambatan serta menjamin bahwa tidak ada kereta api yang mengalami tabrakan baik searah maupun berlawanan arah. Input model berupa jadwal keberangkatan kereta api yang direncanakan (aktual), sedangkan outputnya berupa jadwal keberangkatan dan kedatangan kereta api yang faktual.
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