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Jojo Subagja
Institute for Freshwater Aquaculture Research and Development, Center for Fisheries Research and Development
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Environmental Science

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GROWTH PERFORMANCE OF DOMESTICATED ASIAN REDTAIL CATFISH Hemibagrus nemurus FINGERLINGS REARED AT DIFFERENT STOCKING DENSITIES Otong Zenal Arifin; Vitas Atmadi Prakoso; Endang Haris Suhud; Jojo Subagja
Indonesian Aquaculture Journal Vol 15, No 1 (2020): (June, 2020)
Publisher : Center for Fisheries Research, Agency for Marine and Fisheries Research and Human Resource

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/iaj.15.1.2020.1-6

Abstract

Asian redtail catfish Hemibagrus nemurus is one of the prospective aquaculture commodities in Indonesia. However, there are still shortcomings in completing the domestication of this species. As such, this study was conducted to observe the growth of Asian redtail catfish at different stocking densities. Fish (body weight (BW) of 21.62 ± 0.57 g) were stocked in nine different floating nets (dimension: 2 m x 2 m x 1 m) inside a concrete pond (40 m x 20 m) with three stocking density treatments (10, 15, and 20 fish/m3). Each treatment consisted of three replicates. Growth data were collected every 30 days during 120 days of rearing period which included weight gain (WG), specific growth rate in body weight (SGRBW), average daily growth (ADGBW), biomass gain (BG), feed conversion ratio (FCR), and survival rate (SR). Measured water quality parameters during the experiment consisted of temperature, pH, and dissolved oxygen. The results showed that the best growth performance was achieved by fish at the stocking density of 15 fish/m3 compared to that of fish with the stocking density of 10 and 20 fish/m3. The FCR value of fish at the stocking density of 15 fish/m3 was also significantly better than those of 10 fish/m3 and 20 fish/m3 (P<0.05). The survival rate in each treatment was not significantly different (P>0.05). This study suggests that the optimal stocking density for Asian redtail catfish fingerlings is 15 fish/m3, beyond that value, growth reduction might be expected. Further research is needed to observe its optimal stocking density in different culture systems.
EFFECT OF STOCKING DENSITY ON GROWTH PERFORMANCE OF DOMESTICATED BARB (Barbonymus balleroides) Otong Zenal Arifin; Jojo Subagja; Vitas Atmadi Prakoso; Endang Haris Suhud
Indonesian Aquaculture Journal Vol 12, No 1 (2017): (June 2017)
Publisher : Center for Fisheries Research, Agency for Marine and Fisheries Research and Human Resource

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (150.542 KB) | DOI: 10.15578/iaj.12.1.2017.1-6

Abstract

Barb (Barbonymus balleroides) considerably has economic potential as aquaculture commodity. However, there was still lack of development on aquaculture for this species. This study was conducted to observe the effect of different stocking density on growth of barb. The fish (body weight: 14.89 ± 0.13 g) were stocked in nine floating nets (dimension: 2 m x 2 m x 1 m) inside the concrete ponds with three stocking density treatments (10, 15, and 20 fish/m3). Each treatment consisted of three replications. Fish were fed on commercial pellet (30% of crude protein) as much as 3% of the biomass per day with twice a day of feeding frequency. Data of growth performances (body weight, specific growth rate, average daily growth, biomass, food conversion ratio, and survival rate) were collected every 30 days during 90 days of rearing period. Water quality variables (temperature, pH, and dissolved oxygen) were observed during experiment. The results showed that the optimal stocking density for the growth of barb was 10 fish/m3. Best value of food conversion ratio was found 10 fish/m3 compared with 15 and 20 fish/m3 (P<0.05). Meanwhile, there were no significant differences on survival rate between treatments. These results also showed the potential of rearing barb on culture ponds with appropriate stocking density.
PERTUMBUHAN IKAN UCENG (Nemacheilus fasciatus) DENGAN PADAT TEBAR BERBEDA DALAM LINGKUNGAN EX SITU Vitas Atmadi Prakoso; Muhamad Hunaina Fariduddin Ath-thar; Jojo Subagja; Anang Hari Kristanto
Jurnal Riset Akuakultur Vol 11, No 4 (2016): (Desember 2016)
Publisher : Pusat Riset Perikanan, Badan Riset dan Sumber Daya Manusia Kelautan dan Perikanan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (127.743 KB) | DOI: 10.15578/jra.11.4.2016.355-362

Abstract

Ikan uceng (Nemacheilus fasciatus) tergolong ke dalam famili Balitoridae dan genus Nemacheilus. Ikan uceng memiliki potensi ekonomi yang cukup tinggi. Namun, ketersediaan ikan ini masih mengandalkan penangkapan di alam. Untuk itu, perlu dilakukan penelitian untuk memperoleh informasi tentang kemampuan beradaptasi dan keragaan pertumbuhannya sebagai kegiatan awal domestikasi. Koleksi ikan uceng ditangkap dari Sungai Progo, Temanggung, Jawa Tengah dengan ukuran panjang total 4,39 ± 0,35 cm dan bobot 0,66 ± 0,13 g. Ikan diangkut menggunakan sistem transportasi tertutup selama 12 jam menuju Balai Penelitian dan Pengembangan Budidaya Air Tawar (BPPBAT), Bogor. Ikan dipelihara dan diadaptasikan di akuarium untuk mengetahui pengaruh transportasi terhadap sintasan pasca-transportasi. Selain itu, ikan uceng juga diadaptasikan dengan pemberian pakan alami berupa cacing sampai ikan tersebut dapat beradaptasi dengan pemberian pakan buatan (pellet). Uji keragaan pertumbuhan ikan uceng dilakukan dalam akuarium berukuran 40 cm x 25 cm x 25 cm dengan tiga perlakuan kepadatan, yaitu 1; 1,5; dan 2 ekor/L dengan tiga ulangan pada masing-masing perlakuan. Pakan yang digunakan dalam penelitian ini adalah pelet terapung dengan kandungan protein 30% sebanyak 5% dari biomassa dengan frekuensi dua kali sehari. Pengambilan data pertumbuhan dilakukan setiap 10 hari sekali selama 80 hari masa pemeliharaan. Kualitas air yang diamati meliputi: suhu air, pH, oksigen terlarut, nitrat, nitrit, CO2, dan TAN. Parameter yang diukur meliputi: pertambahan panjang, bobot, laju pertumbuhan spesifik (SGR), biomassa, dan sintasan (SR). Hasil penelitian menunjukkan bahwa padat tebar optimal untuk pertumbuhan ikan uceng adalah 1,5 ekor/L. Hasil penelitian ini juga menunjukkan bahwa ikan uceng sangat mungkin didomestikasi dan selanjutnya dilakukan perbaikan mutu genetiknya.Barred loach (Nemacheillus fasciatus) from Family of Balitoridae and Genus Nemacheilus has considerable economic potential for aquaculture. However, the availability of fish is still relying on the wild stock. Further studies are required to obtain information regarding growth performance and adaptation for domestication purposes. The fish were collected from Progo River, Temanggung, Central Java withtotal lengthof4.39 ± 0.35 cm and body weightof0.66 ± 0.13 g. The fishwere transported using closed system for 12 hours to Institute for Fisheries Aquaculture Research and Development, Bogor. The fishwere kept in aquariums and adapted to determine the effect of transportation on its survival. The fish werefedby using worms untilfish able to eatcommercial feed (pellet). Growth performance test was conductedon 40 cm x 25 cm x 25 cm aquariums with three different stocking densities(1, 1.5, and 2 ind/L) with 3 replicates for each treatment. The fish were fed with floating pellet containing 30% protein at an application ratio of5% of biomass per day and fed were given twice. Data were collected every 10 days during the 80 days rearing period. Water temperature, pH, dissolved oxygen, nitrate, nitrite,CO2, and TAN were observed during the experiment. The parameters measured dincluded body length andbody weight; and based upon these data their specific growth rate (SGR), biomass gain, and survival rate (SR) were calculated. The results showed that the optimal stocking density for the growth of barred loach was 1.5 ind/L. The results also suggested that Barred loach could be domesticated and further research is necessary for genetic improvement
KERAGAAN REPRODUKSI INDUK IKAN BAUNG ALAM DAN HASIL DOMESTIKASI SERTA PERTUMBUHAN BENIH YANG DIHASILKANNYA Vitas Atmadi Prakoso; Jojo Subagja; Otong Zenal Arifin
Media Akuakultur Vol 15, No 1 (2020): (Juni, 2020)
Publisher : Pusat Riset Perikanan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (77.66 KB) | DOI: 10.15578/ma.15.1.2020.1-7

Abstract

Ikan baung Hemibagrus nemurus merupakan salah satu ikan konsumsi penting di Indonesia. Kendala dalam pengembangan budidaya ikan ini adalah ketersediaan benih karena rendahnya fekunditas, daya tetas telur, dan sintasan. Oleh karena itu perlu dilakukan perbaikan kualitas induk untuk meningkatkan produktivitas benih. Tujuan penelitian ini adalah untuk mengevaluasi keragaan reproduksi induk ikan baung generasi kedua (G2) hasil domestikasi dibandingkan dengan induk alam dan pertumbuhan benih yang dihasilkannya. Induk yang digunakan berbobot 300-500 g (n=10 ekor). Pemijahan dilakukan secara buatan. Hasil penelitian menunjukkan bahwa terdapat perbedaan nyata pada sintasan benih yang dihasilkan dari kedua jenis induk (alam: 69,8 ± 9,9%; G2: 93,7 ± 2,8%) (p<0,05). Namun tidak terdapat perbedaan nyata pada performa reproduksi yang meliputi fekunditas (alam: 49634 ± 19282 butir; G2: 62513 ± 7518 butir), derajat pembuahan (alam: 91,1 ± 5,4%; G2: 90,6 ± 4,0%), derajat penetasan (alam: 85,2 ± 13,5%; G2: 90,0 ± 8,2%), dan sintasan larva (alam: 93,2 ± 3,2%; G2: 94,7 ± 4,0%) (p>0,05). Sementara itu, pada parameter pertumbuhan benih yang dihasilkan dari kedua jenis induk, pertambahan panjang (alam: 3,05 ± 0,31 cm; G2: 2,63 ± 0,21 cm), pertambahan bobot (alam: 1,79 ± 0,22 g; G2: 1,40 ± 0,20 g), dan laju pertumbuhan spesifik (alam: 8,65 ± 3,87%; G2: 7,71 ± 2,66%) juga tidak berbeda nyata (p>0,05). Benih hasil domestikasi generasi kedua menunjukkan tingkat kanibalisme yang lebih rendah.Asian redtail catfish, Hemibagrus nemurus is one of the important fish commodities for local consumption in Indonesia. Current culture development of this species is impeded by insufficient availability of seedlings due to low egg fecundity and hatchability as well as low seed survival rate. Therefore, it is necessary to improve broodstock quality with a final objective to increase seedlings productivity. This research was carried out to study the reproductive performance of the second-generation (G2) of domesticated Asian redtail catfish broodstocks and compared with the wild broodstocks. The research also observed the growth of fingerlings produced from both broodstocks. Each broodstock had a weight range between 300-500 g (n=10 fish). Spawning was conducted by induced breeding. The results showed that there was a significant difference in the survival rate of seedlings produced from both broodstocks (wild: 69.8 ± 9.9%; G2: 93.7 ± 2.8%) (p<0.05). Nevertheless, no significant differences found in the reproductive performances, which include fecundity (wild: 49634 ± 19282 eggs; G2: 62513 ± 7518 eggs), fertilization rate (wild: 91.1 ± 5.4%; G2: 90.6 ± 4.0%), hatching rate (wild: 85.2 ± 13.5%; G2: 90.0 ± 8.2%), and larval survival rate (wild: 93.2 ± 3.2%; G2: 94.7 ± 4.0%)(p>0.05). The observed growth parameters of seedlings produced from both broodstocks were length gain (wild: 3.05 ± 0.31 cm; G2: 2.63 ± 0.21 cm), weight gain (wild: 1.79 ± 0.22 g; G2: 1.40 ± 0.20 g), and specific growth rate (wild: 8.65 ± 3.87%; G2: 7.71 ± 2.66%) which were also not significantly different (p>0.05). Seedlings produced from the second generation have lower cannibalism behavior.
Co-Authors Anang Hari Kristanto Endang Haris Suhud Endang Haris Suhud Muhamad Hunaina Fariduddin Ath-thar Otong Zenal Arifin Vitas Atmadi Prakoso