Vitas Atmadi Prakoso
Balai Riset Perikanan Budidaya Air Tawar dan Penyuluhan Perikanan

Published : 4 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 4 Documents
Search

PENGARUH PERBEDAAN PADAT TEBAR LARVA TERHADAP PERTUMBUHAN DAN SINTASAN PADA IKAN UCENG (Nemacheilus fasciatus) Jojo Subagja; Vitas Atmadi Prakoso; Otong Zenal Arifin; Anang Hari Kristanto
BERITA BIOLOGI Vol 18, No 2 (2019)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v18i2.3561

Abstract

Proper stocking density on larval rearing of barred loach (Nemacheilus fasciatus Valenciennes, 1846) is very important in terms of obtaining the best growth and survival rate. This study was aimed to observe the growth and survival rate of barred loach subjected to different larval stocking density. Fish larvae were obtained by artificial spawning from in aquarium. Larvae were stocked on aquariums (50 × 40 × 30 cm) with three stocking density treatments (5, 10, and 15 individuals/L) and three replications. The experimental fish larvae were fed by Artemia and commercial feed (crude protein content: 30%) and feeding frequency twice per day (ad libitum). The length and weight were reassured every 10 days during 70 days of rearing period. Temperature, pH, and dissolved oxygen were measured at each treatment. Data obtained from measurements were analysed to assess the length gain, weight gain, specific growth rate (SGR), biomass gain, and survival rate. The results showed length gain of 3.35 ± 0.01, 2.94 ± 0.10, and 2.82 ± 0.15 cm and weight gain of 0.573 ± 0.023, 0.436 ± 0.018, and 0.417 ± 0.043 g in larval stocking density of 5, 10 and 15 individuals/L, respectively. Specific growth rates and biomass growth were of 6.22 ± 0.41, 5.93 ± 0.21, and 5.68 ± 0.41 %/day and 94.04 ± 5.39, 146.80 ± 3.81, and 167.24 ± 17.48 g in larval stocking density of 5, 10 and 15 individuals/L, respectively. Meanwhile, the survival rates obtained in this study were 89.13 ± 7.25, 93.13 ± 5.13, and 76.50 ± 3.54 % in larval stocking density of 5, 10 and 15 individuals/L, respectively. Increased stocking density has a negative impact on the growth and survival rate of barred loach.
EFFECTS OF DIFFERENT pH SETTINGS ON GROWTH AND SURVIVAL OF COMMON CARP RAJADANU STRAIN Vitas Atmadi Prakoso; Deni Radona
Indonesian Aquaculture Journal Vol 13, No 2 (2018): (December, 2018)
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 (48.894 KB) | DOI: 10.15578/iaj.13.2.2018.57-61

Abstract

pH is one of the important water quality parameters in aquaculture. This study aimed to observe the growth performance and survival rate of common carp (Cyprinus carpio) Rajadanu strain reared in culture media with different pH levels. Fish (length: 3.60 ± 0.18 cm; weight: 1.68 ± 0.18 g) were stocked in nine aquariums (40 cm x 40 cm x 30 cm) for 10 days with a stocking density of 25 fish per aquarium. The treatments used were (A) pH 4-5, (B) pH 5-6, and (C) pH 6-7, with three replications. A commercial feed containing 28% protein was given daily and as much as 3% of the total biomass. The observed data were analyzed using variance analysis (ANOVA), followed by Duncan test. The results showed that the pH treatments did not affect the growth (length and weight) and survival rate of common carp Rajadanu strain (P>0.05). The best growth was achieved by the fish group reared in water with a pH range of 6-7 (length = 0.38 cm; weight = 0.17 g). The highest survival was attained by the fish group reared in water with a pH range of 5-6 (90.66%).
BIOLOGI REPRODUKSI DAN TINGKAT KEBERHASILAN PEMIJAHAN IKAN BAUNG Hemibagrus nemurus (Valenciennes, 1840) POPULASI CIRATA DENGAN INKUBASI SUHU BERBEDA Deni Radona; Jojo Subagja; Vitas Atmadi Prakoso; Irin Iriana Kusmini; Anang Hari Kristanto
Jurnal Riset Akuakultur Vol 13, No 2 (2018): (Juni, 2018)
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 (470.113 KB) | DOI: 10.15578/jra.13.2.2018.131-136

Abstract

Ikan baung merupakan salah satu komoditas populer di Indonesia. Dalam pengembangan budidayanya masih diperlukan input teknologi terutama pada proses pembenihan. Penelitian ini bertujuan untuk mengevaluasi karakter biologi reproduksi dan keberhasilannya dalam proses pemijahan pada ikan baung populasi Cirata yang diinkubasi pada suhu 23°C-24°C, 25°C-26°C, 27°C-28°C, dan 29°C-30°C. Inkubasi induk dilakukan pada styrofoam berukuran 45 cm x 35 cm x 25 cm dengan ketebalan 3 cm. Setiap styrofoam diisi satu ekor induk yang matang gonad. Seleksi tingkat kematangan gonad dilakukan secara kanulasi dan induksi hormon menggunakan LHRH analog (0,6 mL/kg). Penyuntikan dilakukan dua kali dengan selang waktu enam jam. Styrofoam diisi air dengan ketinggian 20 cm, dilengkapi tutup pada bagian atas, water heater, dan sistem aerasi. Inkubasi suhu dilakukan secara eksperimental menggunakan rancangan acak lengkap dengan empat perlakuan suhu dan masing-masing perlakuan diulang sebanyak tiga kali. Hasil penelitian menunjukkan suhu optimal inkubasi pada induk yaitu 27°C-28°C dengan waktu laten 8 jam 35 menit, dan derajat ovulasi 100%. Secara statistik inkubasi induk pada suhu 27°C-28°C menunjukkan nilai karakter biologi reproduksi yang berbeda nyata (P<0,05) dibandingkan dengan inkubasi suhu 23°C-24°C dan 25°C-26°C. Nilai biologi reproduksi yang dihasilkan pada perlakuan terbaik tersebut adalah indeks kematangan gonad 8,6 ± 0,5%; fekunditas 23.909 ± 1.473 butir per ekor; derajat pembuahan 85,5 ± 5,5%; derajat penetasan 69,9 ± 5,0%; dan sintasan 72,3 ± 5,8%. Pada inkubasi suhu 27C°-28°C, telur terdistribusi dengan diameter telur rata-rata sebesar 1,5 mm.Asian redtail catfish is one of the most popular fish commodities in Indonesia. However, improvements in its aquaculture technology are still needed, especially in the breeding process. This study was aimed to evaluate the characters of reproductive biology and level of spawning on Asian redtail catfish from Cirata population incubated at different temperature settings of 23°C-24°C, 25°C-26°C, 27°C-28°C, and 29°C-30°C. Broodstock incubation was conducted in styrofoam boxes (sized 45 cm x 35 cm x 25 cm) with a wall thickness of 3 cm. One mature broodstock was placed inside each Styrofoam. Each styrofoam box was previously filled with freshwater of 20 cm deep, equipped with a lid on top, a water heater, and an aeration system. The gonad maturity stage of each broodstock was determined using cannulation, whilst the hormone induction used LHRH hormone analog (0.6 mL/kg). The injection was performed twice within six hours interval. The incubation was arranged in a completely randomized design (CRD) with four temperature treatments with three replicates. The results showed that the optimal incubation temperature for the broodstock was 27°C-28°C with the latent time ovulation of 8 hours 35 minutes and an ovulation rate of 100%. Statistically, the incubation of broodstock at 27°C-28°C showed a significant difference on the reproductive biological character value (P<0.05) compared to temperature ranges at 23°C-24°C and 25°C-26°C. The reproductive biology parameters generated were gonadosomatic index of 8.6 ± 0.5%; fecundity of 23,909 ± 1,473 egg per individual; fertilization rate of 85.5 ± 5.5%; hatching rate of 69.9 ± 5.0%; and survival rate of 72.3 ± 5.8%. At the incubation temperature of 27°C-28°C, the egg was distributed with an average egg diameter of 1.5 mm.
PERTUMBUHAN BENIH IKAN BAUNG (Hemibagrus nemurus) HASIL DOMESTIKASI PADA LOKASI DENGAN KETINGGIAN BERBEDA Jojo Subagja; Vitas Atmadi Prakoso; Otong Zenal Arifin; Yanto Suparyanto; Endang Haris Suhud
Media Akuakultur Vol 13, No 2 (2018): (December, 2018)
Publisher : Pusat Riset Perikanan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (444.74 KB) | DOI: 10.15578/ma.13.2.2018.59-65

Abstract

Ikan baung (Hemibagrus nemurus) merupakan salah satu ikan asli yang terdapat di Indonesia. Ikan ini memiliki harga lebih tinggi dibandingkan beberapa jenis ikan lainnya yang telah populer di kalangan konsumen. Saat ini, ikan ini sedang pada program domestikasi dimana informasi mengenai lokasi yang sesuai untuk pemeliharaan ikan baung belum banyak dipelajari. Penelitian ini bertujuan untuk mengevaluasi pertumbuhan benih ikan baung pada dua lokasi pemeliharaan dengan ketinggian yang berbeda. Penelitian dilakukan pada lokasi dengan ketinggian rendah (< 200 m dpl) di daerah Cijengkol dan lokasi dengan ketinggian sedang (200-400 m dpl) di daerah Maleber, Jawa Barat. Benih ikan baung hasil domestikasi (bobot: 21,62 ± 0,57 g) ditebar pada tiga buah jaring masing-masing berukuran 2 m x 2 m x 1 m dengan padat tebar 15 ekor/m3 di kolam berukuran 40 m x 20 m yang terletak pada masing-masing lokasi pengujian. Ikan diberi makan dengan pakan komersial (30% protein) sebanyak 5% biomassa per hari dengan frekuensi pemberian pakan dua kali sehari selama 180 hari masa pemeliharaan. Kualitas air yang diamati meliputi suhu, oksigen terlarut, dan pH. Parameter yang diukur yaitu pertambahan panjang, pertambahan bobot, laju pertumbuhan spesifik, rata-rata pertumbuhan harian, pertambahan biomassa, rasio konversi pakan, dan sintasan. Hasil penelitian menunjukkan bahwa benih ikan baung yang dipelihara pada ketinggian < 200 m dpl menunjukkan pertambahan bobot dan biomassa yang lebih baik (30,93 ± 2,29 g dan 7,44 ± 0,79 kg) dibandingkan jika dipelihara pada ketinggian 200-400 m dpl (22,32 ± 1,26 g dan 5,97 ± 0,65 kg) (P<0,05). Rasio konversi pakan pada ikan baung yang dipelihara pada dataran rendah lebih rendah (2,37) dibandingkan jika dipelihara pada dataran sedang (2,68). Suhu air pada ketinggian < 200 m dpl lebih tinggi dibandingkan pada ketinggian 200-400 m dpl (P<0,05). Benih ikan baung tumbuh lebih optimal jika dipelihara di daerah dataran rendah, karena pada daerah tersebut memiliki suhu lebih tinggi yang dapat memengaruhi laju pertumbuhan.Asian redtail catfish (Hemibagrus nemurus) is one of Indonesia’s native fish species. This species has a higher commercial value compared to some other fish species already popular among consumers. The fish is currently under a domestication program which information regarding the suitable rearing location has yet to be established. This research was aimed to study the growth of Asian redtail catfish fingerlings reared in two different-altitude locations. The evaluate was conducted at low-altitude location (< 200 m above sea level) in Cijengkol area and mid-altitude location (200-400 m above sea level) in Maleber area, West Java. In each location, the fingerlings of domesticated Asian redtail catfish (weight: 21.62 ± 0.57 g) were stocked in three net cages sized 2 m x 2 m x 1 m in a pond (40 m x 20 m) with a stocking density of 15 fish/m3 per net cage. The fingerlings were fed with commercial feed (30% protein) of 5% fish biomass per day with feeding frequency twice a day for the period of 180 days. The water quality parameters observed were temperature, dissolved oxygen, and pH. The measured experimental parameters were length gain, weight gain, specific growth rate, average daily growth, biomass gain, feed conversion ratio, and survival rate. The results showed that the fish reared at <200 m above sea level had better weight and biomass gains (30.93 ± 2.29 g and 7.44 ± 0.79 kg) than that of the fish reared at 200-400 m above sea level (22.32 ± 1.26 g and 5.97 ± 0.65 kg) (P<0.05). The feed conversion ratio of fingerlings reared at the low-altitude location was lower (2.37) than those of the mid-altitude location (2.68).The water temperature at < 200 m above sea level was significantly higher than that of 200-400 m above sea level (P<0.05). The growth of Asian redtail catfish fingerlings is more optimal in lowland areas due to higher water temperature accelerating the fish growth rate.