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COMPENSATORY GROWTH OF Oreochromis niloticus SELECTED STRAIN FROM BOGOR, WEST JAVA Vitas Atmadi Prakoso; Kurniawan Kurniawan
Indonesian Aquaculture Journal Vol 12, No 2 (2017): (December, 2017)
Publisher : Center for Fisheries Research, Agency for Marine and Fisheries Research and Human Resource

Inefficient feed management strategy in aquaculture will increase the fish production cost. One of the most effective strategies to solve this problem is through a better understanding of the compensatory growth of cultured fish. O. niloticus BEST tilapia strain (total length: 7.23 ± 0.11 cm mean ± SD; Body weight: 7.04 ± 0.08 g mean ± SD) were reared in aquariums at 26.3 ± 1.4oC for 10 weeks. During the experiment, the control group was fed twice a day. The other two groups were deprived of food for one and two weeks and then fed twice a day during refeeding period. At the end of the experiment, the fish deprived for one week had a body weight, biomass and specific growth rate that were not significantly different from the control group. The body weight, biomass and specific growth rate of fish deprived for two weeks were significantly lower than the other groups. This study revealed that concentrations of ash and lower concentrations of protein and lipid on the deprived groups were higher compared to those without feed deprivation. Mortality of fish was lower than 9% and not significantly different among the treatments. Fish aggressive behavior was the main reason for injuries and death. Given the results, BEST tilapia strain was only able to reach complete growth compensation not longer than one week deprivation period. The results of the present study could be applied as basic information for further research on feeding management of BEST tilapia strain.

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

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.

EFFECTS OF DIFFERENT SALINITY LEVELS ON PHYSIOLOGICAL AND HEMATOLOGICAL RESPONSE OF ROCK BREAM Oplegnathus fasciatus Vitas Atmadi Prakoso; Jun Hyung Ryu; Byung Hwa Min; Rudhy Gustiano; Young Jin Chang
Indonesian Aquaculture Journal Vol 11, No 2 (2016): (December, 2016)
Publisher : Center for Fisheries Research, Agency for Marine and Fisheries Research and Human Resource

Rock bream Oplegnathus fasciatus is one of economically important marine fish species in East Asia. However, lack of information about the salinity tolerance of rock bream related to its physiological response made this issue were needed to be studied. The present study was conducted to determine the effects of different salinity levels on physiological and hematological response of rock bream in order to obtain its salinity tolerance. Twelve rock breams (total length: 26.9 ± 0.6 cm, body weight: 477.3 ± 61.9 g) were used for experiments. Four experimental groups with three replications were conducted to measure the effects of salinity (5, 15, 25, and 35 practical salinity unit (psu)) on physiological and hematological response of rock bream. Fish were stocked into the chamber inside the closed recirculation system. At the end of each experiment, blood samples were collected. The study revealed that lower salinity exposure had tendency to decrease the physical and chemical properties of blood in rock bream. The value of Na+, Cl-, Ca, Mg, and osmolality showed tendency to decrease with lowering salinity, while cortisol and glucose showed tendency to increase from 35 psu to low salinity environment, indicating the enhancement of fish stress and resulted in fish mortality at 5 psu. The lowest cortisol value was 76.3 ng/mL in 25 psu, and the highest value was 188.8 ng/mL in 5 psu. Meanwhile, the lowest glucose value was 35.3 mg/dL and the highest value was 166.7 mg/dL (P<0.05). Results indicate that rock bream could tolerate lower salinity up to 15 psu.

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

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.

METABOLIC RATES (SMR, RMR, AMR, AND MMR) OF Oplegnathus fasciatus ON DIFFERENT TEMPERATURE AND SALINITY SETTINGS Vitas Atmadi Prakoso; Young Jin Chang
Indonesian Aquaculture Journal Vol 13, No 1 (2018): (June, 2018)
Publisher : Center for Fisheries Research, Agency for Marine and Fisheries Research and Human Resource

The metabolic rate of aquatic animals is closely related to oxygen concentration and influenced by internal and external factors. Despite its high value as marine fish species in South Korea, information on rock bream Oplegnathus fasciatus metabolism is scarcely available. This study observed the standard metabolic rate (SMR), routine metabolic rate (RMR), and active metabolic rate (AMR) of rock bream Oplegnathus fasciatus subjected to different temperature settings. Another observation was performed to find out the maximum metabolic rate (MMR) on rock bream subjected to different salinity settings. Fish (TL: 26.86 ± 0.29 cm and BW: 469.40 ± 38.21 g for SMR, RMR, and AMR measurement; TL: 26.7 ± 0.4 cm and BW: 451.0 ± 44.4 g for MMR measurement) were observed using respirometer (dimension = 30 cm × 20 cm × 20 cm; volume: 10.4 L) inside a recirculation systems. SMR, RMR, and AMR were measured at 15°C, 20°C, and 25°C. Meanwhile, MMR was measured at 15, 25, and 35 psu. The results showed that SMR, RMR, and AMR increased linearly by increasing the temperatures (SMR: 58.7 ± 3.2, 102.7 ± 4.3, and 157.1 ± 4.1 mg O2/kg/h at 15°C, 20°C, and 25°C, respectively; RMR: 66.0 ± 8.6, 112.6 ± 10.2, and 175.2 ± 21.3 mg O2/kg/h at 15°C, 20°C, and 25°C, respectively; AMR: 73.4 ± 7.4, 122.0 ± 6.3, and 196.7 ± 15.4 mg O2/kg/h at 15°C, 20°C, and 25°C, respectively), whilst MMR decreased by lowering salinity (48.5 ± 5.2, 61.1 ± 5.5, and 89.3 ± 14.7 mg O2/kg/hour at salinity of 15, 25, and 35 psu, respectively).

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

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

INDUKSI HORMONAL MATURASI GONAD IKAN GABUS (Channa striata) Muhammad Hunaina Fariduddin Ath-thar; Rudhy Gustiano; Irin Iriana Kusmini; Vitas Atmadi Prakoso; Fera Permata Putri
Jurnal Riset Akuakultur Vol 12, No 1 (2017): (Maret 2017)
Publisher : Pusat Riset Perikanan, Badan Riset dan Sumber Daya Manusia Kelautan dan Perikanan

Ikan gabus (Channa striata) merupakan ikan lokal air tawar potensial untuk pengembangan budidaya di Indonesia. Sebagian besar produksi ikan gabus berasal dari tangkapan di alam yang menyebabkan menurunnya populasi ikan gabus. Domestikasi merupakan salah satu solusi dari masalah ini. Dewasa ini, ikan gabus telah dapat dipijahkan baik secara alami maupun buatan. Namun demikian produksi benih yang dihasilkan masih bergantung pada kondisi lingkungan. Tujuan penelitian adalah mendapatkan dosis oodev yang optimal untuk pematangan gonad ikan gabus, pemijahan alami, dan analisis performa pertumbuhan keturunan pertama. Jumlah larva yang dihasilkan dari pemijahan alami ikan gabus pada lingkungan ex situ adalah 1.250-5.000 ekor per induk. Berdasarkan pertambahan diameter dan fase kematangan telur, induksi hormon dengan dosis 1,5 mL/kg menunjukkan hasil terbaik dibandingkan perlakuan lain (perlakuan dosis 0,5 dan 1 mL/kg). Benih ikan gabus hasil pemijahan alami di luar habitat menunjukkan populasi Bogor memberikan performa pertumbuhan mutlak bobot (1,7 ± 0,06 g); laju pertumbuhan spesifik (2,6% ± 0,10%); dan sintasan (86,43% ± 1,32%) lebih baik dibandingkan benih ikan gabus populasi Palembang.Striped snakehead (Channa striata) is a market potential of local fish in Indonesia. Up to now (to date), the majority of production comes from natural catches. This condition, if continues, can lead to the decline in natural stock. Domestication offers a promising solution to help solve this problem. So far, natural spawning for seed production has been done succcesfully. However, continuity of fish supply is still very much dependent on environmental factors. The present study aimed to investigate the optimal hormone dosage for inducing gonad maturation, natural spawning and to analyze growth performance of fry resulted from natural spawning. Striped snakehead broodstock from Palembang and Bogor were induced with three dosages of oodev (consisted of Pregnant Mare’s Serum Gonadotropin and Aromatase Inhibitor) treatment for gonad maturation (0.5 mL/kg; 1 mL/kg and 1.5 mL/kg) with three replications. The reproductive parameters as oocyte diameter and development were measured. Striped snakehead were spawned naturally with male and female ratio of 1:1. Growth performance of seed were analyzed for 40 days of rearing. The result showed that oodev enabled to speed up gonad maturation process. Broodstock induced with 1.5 mL/kg oodev showed the biggest egg diameter and was significantly different from other treatments (P<0.05). Fry count resulted from natural spawning ranged from 1,250 to 5,000/broodstock. The broodstock from Bogor produced higher total weight gain (1.7±0.06 g) and better specific growth rate (2.6%±0.10%) than that of Palembang as well as survival rate (86.43%±1.32%).

LAJU RESPIRASI INDUK IKAN BLACKHEAD SEABREAM Acanthopagrus schlegelii PADA SUHU PEMELIHARAAN YANG BERBEDA Vitas Atmadi Prakoso; Young Jin Chang
Jurnal Riset Akuakultur Vol 12, No 2 (2017): (Juni 2017)
Publisher : Pusat Riset Perikanan, Badan Riset dan Sumber Daya Manusia Kelautan dan Perikanan

Laju respirasi hewan akuatik memiliki hubungan yang erat dengan metabolisme. Tingkat metabolisme hewan merupakan variabel yang dapat dipengaruhi faktor dalam maupun luar, salah satunya adalah suhu. Pada ikan, proses metabolisme juga berkorelasi dengan suhu. Salah satu jenis ikan yang perlu dikaji laju respirasinya adalah ikan blackhead seabream Acanthopagrus schlegelii yang merupakan spesies ikan laut yang popular di Korea Selatan, sehingga diperlukan lebih banyak informasi lagi mengenai laju respirasi ikan ini untuk mengoptimalkan metabolisme ikan ini dan berdampak kepada produktivitas budidaya. Penelitian ini bertujuan untuk mengevaluasi laju respirasi induk ikan blackhead seabream pada beberapa tingkatan suhu. Ikan blackhead seabream (panjang total 29,3 ± 2,2 cm dan bobot tubuh 538,3 ± 43,0 g) diteliti menggunakan respirometer dalam sistem resirkulasi. Tiga kelompok percobaan dilakukan untuk mengukur laju respirasi berdasarkan perubahan suhu pemeliharaan (15°C, 20°C, dan 25°C). Hasil penelitian menunjukkan bahwa kecenderungan laju respirasi meningkat secara linier dengan peningkatan suhu perlakuan, dengan nilai tertinggi sebesar 164,8 ± 30,7 mg O2/kg/jam pada 25°C dan nilai terendah sebesar 72,4 ± 8,1 mg O2/kg/jam pada 15°C. Sementara itu, frekuensi pernapasan berkorelasi positif terhadap kenaikan suhu. Berdasarkan penelitian ini, dapat disimpulkan bahwa perubahan suhu dari 15°C ke 25°C menyebabkan peningkatan laju respirasi pada induk ikan blackhead seabream.It is well known that a close relationship exists between respiration rate and metabolism in aquatic animal. In fish, the metabolic rate is influenced by internal or external factors, such as temperature. This research observed the respiration rate of blackhead seabream, Acanthopagrus schlegelii, which is one of the popular marine fish species in South Korea. Despite the fish popularity, very few information are available about the fish’s respiration rate which is important in order to optimize its metabolism and increase its aquaculture productivity. This study aimed to evaluate the respiration rate of adult blackhead seabream reared in media with different temperature settings. The fish (total length of 29.3 ±2.2 cm and body weight of 538.3 ± 43.0 g) were observed using a respirometer placed inside the recirculation systems. Three groups of experiments were set up to measure the fish’s respiration rate according to different rearing temperatures (15°C, 20°C, and 25°C). The results showed that there was a tendency of respiration rate increased linearly with the increase of temperature. The highest respiration rate was 164.8 ± 30.7 mg O2/kg/hour at 25°C and the lowest value was 72.4 ± 8.1 mg O2/kg/hour at 15°C which indicated that the respiratory rate positively correlated to the change in temperature. According to this study, it can be concluded that temperature changes from 15°C to 25°C led an increase in respiration rate of adult blackhead seabream

PEMANFAATAN BAHAN BAKU LOKAL DI KLUNGKUNG, BALI UNTUK PAKAN IKAN NILA BEST (Oreochromis niloticus) Mas Tri Djoko Sunarno; Irin Iriana Kusmini; Vitas Atmadi Prakoso
Media Akuakultur Vol 12, No 2 (2017): (Desember, 2017)
Publisher : Pusat Riset Perikanan

Tujuan penelitian ini adalah untuk mengaplikasikan pemanfaatan bahan baku lokal di Klungkung, Bali sebagai pakan ikan nila BEST dibandingkan dengan pakan komersil. Pemilihan bahan baku lokal untuk memformulasikan pakan uji ditentukan berdasarkan hasil survei bahan baku yang mengandung nutrien terbaik sesuai dengan kebutuhan ikan nila dan harga yang relatif murah. Pakan uji yang diformulasikan mengandung protein 29%-30%. Performa pakan uji dibandingkan dengan pakan komersil dengan menggunakan uji-T. Setelah diaklimatisasi, benih ikan nila BEST (panjang total 5,7 ± 0,4 cm; bobot 3,1 ± 1,8 g) ditebar secara acak ke dalam enam buah hapa berukuran 2 m × 1 m × 1 m yang terletak di dalam kolam 100 m2 dengan kepadatan 65 ekor/m3 dan diberi pakan uji sebanyak 3% dari total bobot seluruh ikan uji per hari selama tiga bulan masa pemeliharaan. Hasil penelitian menunjukkan bahwa pertumbuhan ikan nila BEST tidak berbeda nyata antara pakan uji hasil formulasi dengan pakan komersil (P>0,05). Nilai FCR pakan komersil tidak berbeda nyata dibandingkan pakan formulasi. Berdasarkan hasil tersebut, keuntungan dengan menggunakan bahan baku lokal lebih tinggi dibandingkan dengan pakan komersil.The purpose of this study was to compare the utilization effects of locally found feed ingredients in Klungkung, Bali for BEST strain tilapia feed compared to a commercial feed. The selection of local raw ingredients used in the feed formulation was based on the best nutrient composition for tilapia needs and its price determined through a separate survey. Formulated test feed contained 29%-30% protein. The formulated feed performance was compared to the commercial feed using the T-test. After acclimatization, the fish (BEST strain tilapia, total length of 5.7 ± 0.4 cm; weight of 3.1 ± 18 g) were randomly stocked into six hapas, each measuring 2 m × 1 m × 1 m in size placed inside a pond (100 m2) with a density of 65 fish/m3 and fed 3% of the total fish biomass per day for three months rearing period. The results showed that the growth of BEST tilapia was not significantly different between the formulated feed and commercial feed (P>0.05). The FCR value of the commercial feed was not significantly different compared to the formulation feed. Based on these results, the benefit of using local raw materials was higher than that of commercial feed.

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

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.

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