Optimalisasi Kepadatan Benih Ikan Mas (Cyprinus Carpio) Strain Rajadanu Pada Pendederan Di Kolam Air Tenang [Density Optimization of Carp Seed (Cyprinus Carpio) Strain Rajadanu in the Nursery in Calm Pool Water]

National fisheries production is not proportional to the increase of the population now, so that the consumption of animal protein needs are not met.For the sake of national fisheries production there is a need for intensive cultivation technology breakthroughs to spur the density in nursery phase ‘rajadanu' carp (Cyprinus carpio) strain. This experiment aim to determine the appropriate density of rajadanu carp growth in the pond at the nursery phase. The average length of tested fishes is 2.02 cm and the average initial weight is 0.25 g maintained in the out door plot pool of Research Installation for Germ Plasm of the Research and Development Division of Freshwater Fisheries, Cijeruk, Bogor measuring 1x1x1 m with density 100, 150 and 200 fishes/m3 .Each treatment was repeated 3 times. Feed used was a commercial feed containing 28% protein given in 2 times a day as much as 5% of the total weight of fish. The results showed that after 40 days, each treatment showed no significant difference (P> 0.05) with absolute length and weight growth of the absolute highest in nursery density of 200 fishes/m3 of 1.30 ± 0.10 cm and 1.14 ± 0, 18 cm with a daily growth rate of 1.30 ± 0.10% and 4.08 ± 0.55%, and the highest survival at densities 200 fishes/m3 of 92.5 ± 6.55%

Collection and evaluation of wild and farmed stocks of giant freshwater prawn in Indonesia

Giant freshwater prawn is an important commodity that has been cultured successfully in Indonesia. Freshwater prawn farming has been adopted in several areas of West Java, i.e. Ciamis (Tambaksari, Parigi, Rancah and Pasir Nagara) and Tasikmalaya. Some commercial hatcheries are found in Jogjakarta, a local government hatchery, and seven private hatcheries. In East Java, freshwater prawns are farmed in brackishwater ponds. Freshwater prawn culture has also spread to some areas in Bali, e.g. Gianyar, Klungkung, Buleleng and Tabanan, as well as in Riau, South Sulawesi and South Sumatera. Inspite the development of freshwater prawn culture in Indonesia, some problems like slow growth rate, diseases and low carcass yield (small edible portion) remain unsolved. To address these problems, the Research Institute for Freshwater Aquaculture (formerly RIFF) started numerous genetic improvement programs since 1996 to improve growth rate and increase the animal’s edible portion. The genetically improved giant freshwater prawn stock named GI Macro (or Genetically Improved Macrobrachium), has been distributed to farmers particularly in Java. As reported in Nugroho and Emmawati (2004) and Nugroho et al. (2005), the performance of this stock in the different culture sites varied hence the development of a more suitable genetic base population with the use of other wild-sourced stocks in the continuous selection program was deemed necessary. An assessment of the genetic background of the wild stocks showed genetic divergence between giant freshwater prawns from western and eastern part of Indonesia (Nugroho et al., 2007). A performance evaluation of giant fresh water prawn stocks will be conducted to complement the above results in order to produce high quality giant freshwater prawn seedstock

Aspek Ekologi Ikan Kancera (Tor Soro) Kuningan Dan Pematangan Gonad Melalui Implantasi Hormon Gonadotropin (HCG)

Ecological Aspect and Gonadal Maturation of Tor soro by HCG peletted Implantation. Theexperiment was conducted to determine optimal dosage of Gnrh-a hormon at gonadal maturationof mahseer from Kuningan (Tor soro). The fish was reared in concrete tanks (60m2). Thehormon was used for implantation is HCG (pregnyl). The different dosage of hormon are 250Iu/Kg-1 ; 500 Iu/Kg-1 ; 750 Iu/Kg-1 . The result of this reaserch showed that egg development isMei-Juni (average of egg diameter is 1,4 mm) and Januari (average of egg diameter is 1,35 mm),Other month, the egg diameter was not develop or atresia. Treatment with 500 Iu/Kg-1 dossageshowed the best effect on oosit diameter was at 21 day and 63 day from first oosit diameter of0,9 mm to 1,4 mm

OPTIMALISASI KEPADATAN BENIH IKAN MAS (Cyprinus carpio) STRAIN RAJADANU PADA PENDEDERAN DI KOLAM AIR TENANG

National fisheries production is not proportional to the increase of the population now, so that the consumption of animal protein needs are not met.For the sake of national fisheries production there is a need for intensive cultivation technology breakthroughs to spur the density in nursery phase ‘rajadanu’ carp (Cyprinus carpio) strain. This experiment aim to determine the appropriate density of rajadanu carp growth in the pond at the nursery phase. The average length of tested fishes is 2.02 cm and the average initial weight is 0.25 g maintained in the out door plot pool of Research Installation for Germ Plasm of the Research and Development Division of Freshwater Fisheries, Cijeruk, Bogor measuring 1x1x1 m with density 100, 150 and 200 fishes/m3 .Each treatment was repeated 3 times. Feed used was a commercial feed containing 28% protein given in 2 times a day as much as 5% of the total weight of fish. The results showed that after 40 days, each treatment showed no significant difference (P> 0.05) with absolute length and weight growth of the absolute highest in nursery density of 200 fishes/m3 of 1.30 ± 0.10 cm and 1.14 ± 0, 18 cm with a daily growth rate of 1.30 ± 0.10% and 4.08 ± 0.55%, and the highest survival at densities 200 fishes/m3 of 92.5 ± 6.55%

KARAKTERISASI REPRODUKSI DAN MORFOMETRIK IKAN BATAK DARI DUA LOKASI (SUMATERA UTARA DAN JAWA BARAT)

Karakterisasi morfometrik dan reproduksi induk ikan batak dan keturunannya yang dipelihara di kolam dan induk ikan batak yang dipelihara di keramba telah dilakukan. Karakterisasi morfometrik meliputi sirip perut, sirip dubur, sirip punggung, sirip ekor, sirip dada, sisik linea latelaris kiri, dan sisik linea lateris kanan. Karakterisasi reproduksi meliputi panjang dan bobot ikan pada saat matang gonad, diameter telur, jumlah telur per kg induk, indek ovosomatik, laju pembuahan, laju penetasan, waktu laten, lama penetasan, panjang larva setelah habis kuning telur dan jumlah larva per kg induk dari masing-masing populasi. Populasi ikan Tor soro dari Jawa Barat dan Sumatera Utara mempunyai karakteristik morfometrik yang sama. Induk ikan generasi pertama (F1) ikan batak yang berada di Cijeruk, Jawa Barat menghasilkan jumlah larva yang lebih besar (259 ± 58) ekor/kg induk dibandingkan induk tetuanya (190 ± 70) ekor/kg induk, sedangkan ikan dari Ambarita, Sumatera Utara belum dapat menghasilkan larva.Reproductive and morphometric characterization of Tor soro broodstocks and their descent reared in the pond and tor soro broodstock reared in the cage were conducted. The reproductive characterizations include the length and weight at the maturation stage, eggs diameter, number of eggs per kg body weight, index ovosomatic, fertilization rate, hatching rate, and number of larvae per kg body weight of broodstock. The morphometric characterizations include the total length, standard length, body hight, ration body hight/standard length, abdominal fin, anal fin, dorsal fin, tile fin, left lenea latelaris and right linea lateralis. Population of Tor soro from West Java and North Sumatra had the same morphometric characterization. The first generation of Tor soro in Cijeruk, West Java produced more larvae (259 ± 58) fish/kg than their parent (190 ± 70 ) fish/kg, while the fish from Ambarita, North Sumatra has not produced the larvae yet

PENENTUAN VARIASI GENETIK IKAN BATAK (Tor soro) DARI SUMATERA UTARA DAN JAWA BARAT DENGAN METODE ANALISIS RANDOM AMPLIFIED POLYMORPHISM DNA (RAPD)

Variasi genetik ikan batak yang dikoleksi dari daerah Asahan, Aek Sarul (Tarutung), Aek Sirambe, Bahorok (Sumatera Utara), dan Sumedang (Jawa Barat) telah diteliti menggunakan metode Random Amplified Polymorphism DNA (RAPD). Primer yang digunakan untuk analisis adalah OPC-01 dan OPC-02. Dari 2 primer yang digunakan hanya OPC-01 yang menunjukkan hasil PCR yang memberikan Polimorfisme. Berdasarkan nilai rata-rata heterozigositas (0,08—0,1250) dan persentase lokus polimorfik (22%—33%) secara umum menunjukkan bahwa keragaman genetik ikan batak yang dianalisis tergolong rendah. Hasil analisis RAPD juga menunjukkan bahwa secara genetik tidak ada perbedaan yang nyata di antara kelima populasi ikan batak.The genetic variabilities of Tor soro collected from Asahan, Aek Sarula (Tarutung), Aek Sirambe, Bahorok (North Sumatra), and Sumedang (West Java) were examined by RAPD. Primers used for analysis were OPC-01 and OPC-02. From both of the primers, only OPC-01 showed polymorphism. Based on the heterozigosity (0.08—0.1250) and percentage of polimorphyc locus value (22%—33%), indicated that genetic variation of Tor soro of North Sumatra was low. The RAPD analisis showed that no significantly difference among five population

PENINGKATAN DAYA TETAS TELUR DAN SINTASAN LARVA IKAN NILA (oreochromis niloticus) MELALUI MANAJEMEN KESEHATAN IKAN

Penelitian dilukukan dengan tujuan untuk merrgetuhui bagi peningkatan produksi benih nila melalui penerapan manajemen kesehatan ikan. Penggunaan beberapa nacarn anti jamur untuk perlukuan telur, beberapa antibiotika dan vaksin dengan berbagai dosis untuk peningkatan daya sintasan larva

KERAGAAN BENIH IKAN MAS HIBRID ANTARA STRAIN RAJADANU DAN CANGKRINGAN PADA JARING APUNG DI KOLAM

Benih unggul diperlukan dalarn budidaya ikan, karena dapat menghemat biaya produksi. Benih yang sekarang ada di pasaran merupakan benih yang diproduksi tanpa menggunakan persyaratan minimal untuk menghindari perkawinan "sekadang" sehingga mempunyai laju pertumbuhan yang rendah

MANAJEMEN INDUK DALAM PEMBENIHAN IKAN Tor soro

Untuk menghasilkan benih ikan Tor soro yang baik, maka penenganan induk sangat penting yang meliputi: cara pemeliharaan, penanganan induk, aplikasi bioteknologi melalui terapi hormon, dan pemeriksaan induk siap pijah