I. Mokoginta
Bogor Agricultural University, Department of Aquaculture

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Growth performance of African catfish (Clarias sp.) juvenile fed on the diets containing various chromium content

Jurnal Akuakultur Indonesia Vol 6, No 2 (2007): Jurnal Akuakultur Indonesia
Publisher : Jurnal Akuakultur Indonesia

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Abstract

This experiment was conducted to determine the effect of different dietary chromium level on the growth performance of catfish (Clarias sp.) juvenile. Five experimental diets contain different chromium level, namely diet A (as a control diet) 0.01; B 1.30; C 2.60; D 3.90 and E 5.20 mg/kg diet were used in this experiment. Fish with body weight of  5.57 ± 0.01 g/ind, fed on the experimental diet, twice a day, at satiation. Feeding trial was conducted for 60 days. Based on the evaluation of protein level of the whole body, protein and lipid retention, daily growth rate and feed efficiency, it was concluded that the optimum dietary chromium level for catfish  juvenile was 2.60 mg/kg diet. Keywords: chromium, growth, Clarias sp.   ABSTRAK Penelitian ini dilakukan untuk mengetahui pengaruh pemberian kromium dengan level berbeda terhadap pertumbuhan ikan lele (Clarias sp.) juvenil.  Lima jenis pakan yang mengandung kromium berbeda, yaitu pakan A  (kontrol) 0,01; B 1,30; C 2,60; D 3,90 dan pakan E 5,20 mg/kg digunakan dalam penelitian ini. Ikan dengan bobot 5,57 ± 0,01 g/ind., diberi pakan 2 kali sehari secara satiasi.  Pemeliharaan ikan dilakukan selama 60 hari.  Berdasarkan analisa retensi protein, kandungan protein dan retensi lemak dalam tubuh ikan lele, disimpulkan bahwa kadar kromium yang optimum untuk juvenil ikan lele adalah 2,60 mg/kg pakan. Kata kunci: kromium, pertumbuhan, Clarias sp.

Rearing of Humpback Grouper (Cromileptes altivelis) Fed on Pellet and Trash Fish in Cage Culture System

Jurnal Akuakultur Indonesia Vol 7, No 1 (2008): Jurnal Akuakultur Indonesia
Publisher : Jurnal Akuakultur Indonesia

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Abstract

This experiment was conducted in order to have comparative description about the growth of humpback grouper (Cromileptes altivelis) fed by artificial diets compare to the trash fish in cage culture system. The protein level of the artificial diet was 42.5%, and the trash fish was 51-70%. Fish fed on the experimental diet twice a day, at satiation, for 60 days. Result showed that the growth rate of fish fed on the artificial diet are slightly lower (6.37% and 8.38%) than that of trash fish (11.11% and 10.18%). Though the growth levels are lower, the feed conversion ratio (3.55 and 3.13) showed a better value than that of fish fed on trash fish (4.81 and 5.83). The use of artificial feed is also more economical than trash fish feed based on  cost of the feed.  With that fact we can conclude that artificial feed can equalize or even substitute the trash fish feed for Humpback grouper rearing in cage culture system. Keywords: artificial diets, cage culture, humpback grouper, Cromileptes altivelis   ABSTRAK Penelitian ini dilakukan untuk mengetahui pertumbuhan ikan kerapu bebek (Cromileptes altivelis) antara yang diberi pakan buatan dan ikan rucah, yang dipelihara pada keramba jaring apung.  Kadar protein pakan buatan adalah 42,5%, dan ikan rucah adalah 51-70%.  Ikan diberi pakan 2 kali sehari, secara satiasi, selama 60 hari pemeliharaan.  Hasil penelitian menunjukkan bahwa laju pertumbuhan ikan yang diberi pakan buatan lebih rendah (6,37% dan 8,38%) dibandingkan dengan yang diberi ikan rucah (11,11% dan 10,18%).  Meskipun laju pertumbuhan lebih rendah, konversi pakannya (3,55 dan 3,13) lebih baik dibandingkan dengan ikan yang diberi pakan berupa ikan rucah (4,81 dan 5,83).  Berdasarkan biaya untuk pakan, penggunaan pakan buatan lebih ekonomis dibandingkan ikan rucah.  Dengan demikian, pakan buatan dapat menggantikan ikan rucah dalam pemeliharaan ikan kerapu bebek di keramba jaring apung. Kata kunci: pakan buatan, keramba jaring apung, ikan kerapu bebek, Cromileptes altivelis

Ovarian development of female mud crab, Scylla serrata supplemented with cholesterol and injected with serotonin

Jurnal Akuakultur Indonesia Vol 9, No 1 (2010): Jurnal Akuakultur Indonesia
Publisher : Jurnal Akuakultur Indonesia

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Abstract

Cholesterol is known to play an important role in nutrition of crustacean and function as a precursor for steroids synthesis, while neurohormone of serotonin could induce ovarian maturation in crustacean. Ovarian development of adult females Scylla serrata was induced by adding cholesterol in the diet and serotonin injection. This research was designed to study the effectiveness of cholesterol supplementation and serotonin injection in ovarian development. Broodstocks were stocked in nine experimental units in three fiber tanks. The fiber tank was equipped with sands substrate and flow through seawater system. The experimental crabs were assigned into a completely randomized design with a 3 x 3 factorial arrangement. The first factor was cholesterol supplementation in the diet with 3 levels (0, 0,5 and 1,0%). The second factor was serotonin injection with 3 levels (0, 5 and 10 μg/g BW). Samples of broodstock were taken every four days to evaluate the stages of ovarian maturity and parameters were used to evaluate the ovarian maturation stage are gonad index (GI) and oocyte diameter, concentration of estradiol 17β, yolk protein concentrations, and fecundity. Results showed that female crabs supplemented with 0,5% cholesterol and a combination of cholesterol 0,5% supplementation and injection serotonin with a dose of 10 μg/g BW had better reproduction development. It is concluded that ovarian development of Scylla serrata could be improved by cholesterol supplementation and serotonin injection. Key words: Cholesterol, serotonin, ovarian development, Scylla serrata   ABSTRAK Kolesterol diketahui merupakan nutrien spesifik yang berperan dalam sisntesis hormon steroid dan mengontrol reproduksi, sementara serotonin merupakan salah satu neurohormon yang dilaporkan dapat merangsang pematangan ovari dan pemijahan pada krustase. Penelitian ini bertujuan untuk mengetahui pengaruh tingkat pemberian kolesterol yang optimal dalam pakan buatan, serta dosis penyuntikan serotonin yang efektif untuk mempercepat proses perkembangan dan pematangan ovarium induk kepiting bakau Scylla serrata. Pemeliharaan induk dilakukan dengan menggunakan tiga buah bak fiber. Bak pemeliharaan dilengkapi dengan substrat pasir dan sistim air laut mengalir. Eksperimen menggunakan rancangan acak lengkap (RAL) pola faktorial, dengan 9 satuan percobaan. Faktor pertama, suplemen kolesterol didalam pakan dengan 3 tingkat dosis (0; 0,5; dan 1%) dan faktor kedua, injeksi serotonin dengan 3 tingkat dosis (0, 5, dan 10 μg/g bobot tubuh). Pengamatan terhadap tingkat kematangan ovari dilakukan setiap 4 hari sekali. Paramater pengambilan sampel meliputi  tingkat kematangan ovari, indeks gonad dan diameter oosit, konsentrasi estradiol 17β, konsentrasi protein yolk, dan fekunditas. Hasil penelitian menunjukkan bahwa induk kepiting yang disuplementasi dengan dosis kolesterol 0,5% dan induk kepiting yang mendapat perlakuan kombinasi, suplementasi kolesterol 0,5% dan injeksi serotonin dosis 10 μg/g bobot tubuh dapat menghasilkan perkembangan ovari yang terbaik. Jadi kolesterol dan serotonin dapat digunakan untuk meningkatkan perkembangan ovari. Kata-kata kunci: Kolesterol, serotonin, perkembangan ovari, Scylla serrata

Requirement of n-6 and n-3 Fatty Acid in Broodstock Diets on Reproductive Performance of Green catfish, Hemibagrus nemurus Blkr.

Jurnal Akuakultur Indonesia Vol 6, No 1 (2007): Jurnal Akuakultur Indonesia
Publisher : Jurnal Akuakultur Indonesia

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Abstract

This experiment was conducted to determine the optimum dietary level of n-6 and n-3 fatty acids on reproduction performance of green catfish. Four experimental diets with different level of n-6 and n-3 fatty acid (diet A: 0.77% n-6 fatty acid, 0.07% n-3 fatty acid; diet B: 1.56%,0.10 %; diet C: 1.74%, 0.13 % and diet D: 2%, 0.28%) were used in this experiment during seven month. Diets given twice every day in the morning and evening. The 28 broodstock used in this research with density every waring seven broodstock. Samples of eggs were analyzed for fatty acid composition. The diameter of eggs, fecundity, hatching rate of the eggs, survival rate and percentage of abnormal larvae were determined. Results showed that different dietary level of n-6 and n-3 fatty acids of the broodstock significantly affect the reproductive performance especially fecundity and hatching rate of eggs. The maximum fecundity, egg diameter, and hatching rate were produced broodstock fed on 1.56% n-6 fatty acid and 0.10 % n-3 fatty acid in diet by at the level of 12.29% lipid. Keywords : n-6 and n-3 fatty acids, reproduction performance, green catfish, Hemibagrus nemurus.   Abstrak Penelitian ini dilakukan pada berbagai level asam lemak n-6 dan n-3 dalam pakan untuk melihat pengaruhnya terhadap penampilan reproduksi dari ikan baung. Penelitian dilaksanakan selama 7 bulan.  Empat jenis pakan  digunakan dalam percobaan ini dengan perbedaan kandungan asam lemak n-6 dan n-3 (pakan A: 0,77% asam lemak n-6, 0,56% asam lemak n-3; pakan B: 1,56%, 0,78%; pakan C: 1,74%, 1,00% and pakan D: 2,03%, 1,82%). Dalam penelitian ini 28 ekor induk digunakan dan ditebarkan kedalam waring dengan kepadatan 7 ekor tiap waring. Pakan diberikan pagi dan sore hari secara at satiation.  Sampel telur dan larva dianalisa komposisi asam lemak. Penampilan reproduksi yang diamati adalah diameter telur, fekunditas, derajat penetasan telur, derajat kelangsungan hidup larva dan persentase larva abnormal. Hasil penilitian menunjukan bahwa perbedaan kandungan asam lemak n-6 dan n-3 dalam pakan berpengaruh pada komposisi asam lemak n-6 dan n-3 telur dan juga memberikan pengaruh yang berbeda nyata terhadap penampilan reproduksinya khusus pada fekunditas dan derajat penetasan telur. Lama waktu matang yang dicapai oleh tiap induk relatif sama antar perlakuan.  Fekunditas, diameter telur, derajat penetasan telur dan derajat kelangsungan hidup larva tertinggi diperoleh pada induk yang memperoleh pakan yang mengandung 1,56% asam lemak n-6 dan 0,78% asam lemak n-3. Kata kunci:  Asam lemak n-6 and n-3, penampilan reproduksi, ikan baung, Hemibagrus nemurus.

Effect of Dietary Protein Level and Protein to Energi Ratio on the Growth of Swimming Crab Portunus pelagicus

Jurnal Akuakultur Indonesia Vol 6, No 1 (2007): Jurnal Akuakultur Indonesia
Publisher : Jurnal Akuakultur Indonesia

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Abstract

The extending of protein and energy of the Swimming crab should be on certain limit that could be give maximum growth. The objective of this research are to determine of the protein level and optimum energy ratio of protein (C/P) at rajungan (Portunus pelagicus). The Crab-5 (C-5) stage used in the experiment, maintained in the topless (volume of 2 liters), with density of 1 crab/glass. There were seven of the experimental diets namely A (protein of 30%; C/P of 8 kkal), B (30%; 9.5), C (35%; 8), D (35%; 9.5), E (40%; 8), F (40%; 9.5) and G (45%; 8) with extending of food are 5 time of daily. Complete randomize design with 2 of factor and 3 of replication use in the experiment. The results of this experiment showed that interaction of the protein level and the energy ratio of protein is influence to the growth rate of daily and retention of lipid. The D is the best in give of the growth rate of daily, the consumption of food, the retention of protein, and the frequency of moulting (P

Dietary Zinc Requirement of Young Giant Gouramy (Osphronemus gouramy, Lac.)

Jurnal Akuakultur Indonesia Vol 6, No 2 (2007): Jurnal Akuakultur Indonesia
Publisher : Jurnal Akuakultur Indonesia

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Abstract

This experiment was conducted to determine the dietary zinc requirement of young giant gouramy. Five experimental diets were used in this experiment containing iso-nitrogenous and iso-energy with different levels of zinc (0, 25, 50, 100, and 200 mg per kg). The initial means of body weight of body the fishes was 0.82 g per individual. The fishes were fed upon the diets at satiation, three times daily, for 12 weeks. The results indicated no zinc deficiency symptoms in this experiment. The daily growth rate, feed efficiency, survival rates and protein and lipid retention were not significantly different from all the diets. However, fish fed upon 25 mg Zn/kg diets produced the highest protein and total digestibility. The zinc contents of 25 mg Zn/kg diets gave the highest value in zinc accumulation in the bone, blood serum and eyes. The highest accumulation of the zinc in the liver occurred in 50 mg Zn/kg diets. There was increase in zinc content of the tissues after increasing levels of dietary zinc. Thus, Zn requirement for juvenile of giant gouramy was 25-50 mg/kg diets. Keywords: Osphronemus gouramy, Zinc, diet   ABSTRAK Penelitian ini dilakukan untuk mengetahui kebutuhan seng dalam pakan untuk benih ikan gurame.  Lima jenis pakan percobaan yang diuji mengandung iso-nitrogen dan iso-energi dengan kadar seng (Zn) yang berbeda (0, 25, 50, 100, and 200 mg per kg).  Bobot rata-rata benih yang digunakan adalah 0,82 g per ekor.  Ikan dipelihara selama 12 minggu dan diberi pakan 3 kali sehari.  Hasil penelitian menunjukkan bahwa tidak ada gejala defisiensi Zn.  Laju pertumbuhan harian, efisiensi pakan, kelangsungan hidup dan rentesi protein dan lemak tidak berbeda nyata untuk semua perlakuan.  Namun demikian, ikan yang diberi Zn sebanyak 25 mg/kg pakan menghasilkan kecernaan total dan protein tertinggi.  Perlakuan tersebut juga menghasilkan akumulasi Zn tertinggi dalam tulang, serum darah dan mata.  Akumulasi Zn tertinggi dalam hati diperoleh pada perlakuan 50 mg Zn/kg pakan.  Kandungan Zn dalam jaringan meningkat sejalan dengan meningkatnya kadar Zn dalam pakan. Dengan demikian, kebutuhan Zn bagi benih ikan gurame adalah sebanyak 25-50 mg /kg pakan. Kata kunci: Osphronemus gouramy, seng, pakan

Effect of L-Ascorbyl-2-Phosphate Magnesium as a Vitamin C Source in Different Doses on Growth of Patin Pangasius Hypophthalmus Fingerlings

Jurnal Akuakultur Indonesia Vol 5, No 1 (2006): Jurnal Akuakultur Indonesia
Publisher : Jurnal Akuakultur Indonesia

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Abstract

This study was aimed to determine optimum dose of L-Ascorbyl-2-Phosphate Magnesium in the diet of patin, Pangasius hypophthalmus fingerlings.  Five isoprotein and isocaloric diets containing different dose of L-Ascorbyl-2-Phosphate Magnesium, i.e. 0, 25, 75 and 100 mg/kg diet were used in this experiment.  Fish with an average size of 5.00±0.11 g were maintained at a density of 15 fish per aquarium.  Fish were fed three times a day at satiation, for 40 days.  The results of study shows that vitamin C content in fish body increased as the vitamin C level of the diet increased.  Similar pattern to vitamin C content was also found in protein retention, lipid retention, daily growth rate, and feed efficiency (p< 0.05).  Thus, it can  be concluded that the most optimum dose of L-Ascorbyl-2-Phosphate Magnesium as vitamin C source for patin fingerlings in this experiment was 100 mg Vit C/kg diet. Higher dose of L-Ascorbyl-2-Phosphate Magnesium than 100 mg/kg diet however need to be further verified. Keywords: vitamin C, patin, Pangasius hypophthalmus.   ABSTRAK Penelitian ini bertujuan untuk menentukan kadar optimum L-Ascorbyl-2-Phosphate Magnesium dalam pakan ikan patin, Pangasius hypophthalmus ukuran sejari. Lima macam pakan isoprotein dan isokalori mempunyai kandungan L-Ascorbyl-2-Phosphate Magnesium berbeda, berturut-turut 0, 25, 50, 75 dan 100 mg/kg pakan telah digunakan dalam penelitian ini. Benih berukuran rata-rata 5,00±0,11 g dipelihara dalam akuarium dengan kepadatan 15 ekor per akuarium. Ikan diberi pakan tiga kali sehari, secara at satiation, selama 40 hari. Hasil penelitian menunjukkan bahwa kadar vitamin C tubuh meningkat sejalan dengan kadar vitamin C pakan. Demikian pula retensi protein, retensi lemak laju pertumbuhan harian, efisiensi pakan mengikuti pola yang sama seperti kandungan vitamin C tubuh (p

Effect of Enriched Feed by Different n-6 Fatty Acids Levels at 0% of n-3 on Danio rerio Reproductive Performance

Jurnal Akuakultur Indonesia Vol 5, No 1 (2006): Jurnal Akuakultur Indonesia
Publisher : Jurnal Akuakultur Indonesia

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Abstract

Lipid and fatty acids are two factors determining reproductive performance of fish and survival rate of hatched larvae. Lipid has important role as energy source and to maintain the stability of membrane permeability.  The requirement of fatty acids differs among fish species.  Freshwater fishes need more n-6 than n-3 fatty acids, or appropriate combination of them.  In several fish species, feeding HUFA increase their fecundity, fertilization rate and eggs quality.  In this study, zebra fish, Danio rerio were fed with diet containing 0% n-3 essential fatty acids and different n-6 level; 0, 1 and 2%.  The result showed that there were no significant differences in gonado somatic index and several reproductive performances observed.  However, 1% of n-6 fatty acids supplementation produced a higher protein and lipid content in the body by 16.85% and 55.10%, respectively. Keywords: fatty acid, n-3, n-6, Danio rerio, reproductive performance   ABSTRAK Lemak dan asam lemak merupakan faktor yang sangat mempengaruhi performa reproduksi dan kelangsungan hidup larva yang menetas. Lemak berperan penting sebagai sumber energi dan menjaga kestabilan permeabilitas membran. Kebutuhan asam lemak berbeda untuk setiap jenis ikan.  Ikan air tawar biasanya lebih banyak membutuhkan asam lemak n-6 daripada asam lemak n-3 atau campuran asam lemak n-6 dan n-3. Pada beberapa ikan , pemberian HUFA melalui pakan induk dapat meningkatkan fekunditas, derajat pembuahan dan kualitas telur.  Pada penelitian ini ikan zebra diberi pakan mengandung asam lemak esensial dengan kadar n-3 tetap (0%) dan n-6 berbeda yaitu 0, 1 dan 2%. Hasil penelitian menunjukkan bahwa tidak ada perbedaan nyata terhadap nilai Gonado Somatik Indeks serta beberapa parameter penampilan reproduksi lainnya pada ikan zebra, Danio rerio. Namun kadar asam lemak n-3 sebesar 0% dan n-6 sebesar 1% menghasilkan kadar protein dan kadar lemak tubuh tertinggi yang masing-masing mencapai 16,85% dan 55,10% Kata kunci: asam lemak,  n-3, n-6, Danio rerio, performa reproduksi

The Improvement of Protein Retention through a Higher Utilization of Carbohydrate in the Diet with Chromium for Common Carp Cyprinus carpio Linn.

Jurnal Akuakultur Indonesia Vol 3, No 2 (2004): Jurnal Akuakultur Indonesia
Publisher : Jurnal Akuakultur Indonesia

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Abstract

This experiment was conducted to improve the protein retention through carbohydrate efficiency in the chromium diet of common carp Cyprinus carpio. Four experimental diets with isonitrogen and isocaloric but different Cr+3 level 0,00; 1,33; 2,23 and 3,96 ppm were used in this experiment. Fish with body weight of 5,31 ± 0,02 gram were reared in aquaria (50 x 40 x 35 cm); 20 fish per aquarium. Fish fed upon the experimental diets three times daily, at satiation for 50 days. Results of this experiment showed that the protein retention could be improved by given Cr+3 in the diet. Based on the respon curve of protein retention (Yi = -1.1678X2 + 3,7223X + 24,818 ; R2 = 0,9) it was found that the optimum Cr*J in the diet was 1,59 ppm. The maximum relative growth rate was found at 2,16 ppm Cr3+ (Y2 = -14,592 X: + 63,18IX + 426,43 ; R = 0,9). The feed efficiency and the survival rate of the fish are the same between treatment (p>0.05). The protein level of the fish from treatment 3,96 ppm Cr+3 was lower than the others; the lipid level of Cr+3 diets was higher than that of non Cr+3 diet; however the carbohydrate level of fish from diet 2,23 Cr+3 was lower than the others. It was concluded that the optimum level of Cr +3 in the diet of common carp was 1,59-2,16 ppm Key words : dietary chromium, common carp, Cyprinus carpio   ABSTRAK Penelitian ini bertujuan untuk meningkatkan retensi protein dan pertumbuhan ikan mas Cyprinus carpio melalui peningkatan efisiensi karbohidrat pakan yang diberi kromium (Cr"3). Empat macam pakan dengan kadar Cr+3 yang berbeda yaitu 0,00; 1,33; 2,23 dan 3,96 ppm tetapi kadar protein dan energi yang sama digunakan pada penelitian ini. Ikan mas berbobot 5,31 ± 0,02 gram per ekor dipelihara dalam akuarium (50x40x35 cm) dengan kepadatan 20 ekor. Ikan diberi pakan tiga kali sehari secara at satiation. Pemberian pakan dilakukan selama 50 hari. Hasil penelitian memperlihatkan bahwa adanya pemberian Cr+3 dalam pakan akan mengefisienkan penggunaan karbohidrat pakan sehingga retensi protein akan meningkat pula. Retensi protein tertinggi dicapai pada kadar Cr+3 1,59 ppm (dihitung dari persamaan y, = -1,1678X2 + 3,7223X + 24,818; R2 = 0,9). Pertumbuhan relatif tertinggi dicapai pada kadar Cr+3 2,16 ppm (dihitung dari y2 = -14,592 X2 + 63.181X + 426,43; R2 = 0,9); sedangkan efiseinsi pakan dan tingkat kelangsungan hidup antar perlakuan sama (p>0,05). Kadar protein tubuh perlakuan 3,96 ppm Cr+3 relatif lebih rendah dari perlakuan lainnya. Kadar lemak tubuh ikan yang diberi Cr+3 lebih tinggi dari yang tidak diberi Cr+3; sedangkan kadar karbohidrat tubuh terendah pada perlakuan 2,23 ppm Cr+3. Secara keseluruhan dapat disimpulkan bahwa kadar Cr+3 optimum dalam pakan ikan adalah 1,59-2,16 ppm. Kata kunci : Kromium pakan. ikan mas, Cyprinus carpio

Effect of Different Feeding on Feed Conversion and Growth of Common Carp (Cyprinus carpio) in Floating Net Cage Culture at Jatiluhur Dike

Jurnal Akuakultur Indonesia Vol 4, No 1 (2005): Jurnal Akuakultur Indonesia
Publisher : Jurnal Akuakultur Indonesia

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Abstract

This experiment was conducted to evaluate the effectiveness of two feeding methods commonly used in cage culture of carp Cyprinus carpio at Jatiluhur Lake, Purwakarta. Common carp in mean weight of 24.29±4.29 gram were reared in floating net cage 7×7×3 m3, for 70 days rearing.  Fish were fed on a commercial diet containing 30% protein at 5 times daily.  Experimental treatment was feeding technique, i.e., by 6% of body weight, and at satiation for the second treatment.  The results showed that the application of "at satiation feeding method" was more effective than "fixed method" (6% of body weight) indicating with food conversion ratio of 1.86 versus 1.91. Production of fish fed on the diet using at satiation method for 70 days was 1,241 kg/cage. Keywords: common carp, Cyprinus carpio, FCR, floating net cage, at satiation   ABSTRAK Salah satu cara untuk menekan biaya dalam usaha budidaya ikan secara intensif adalah dengan penggunaan pakan secera efisien agar ikan tumbuh optimal dan pakan yang terbuang seminimal mungkin. Penelitian dilakukan di Waduk Jatiluhur, Purwakarta.  Ikan mas (Cyprinus carpio) ukuran bobot awal rata-rata 24,29±4,29 gram dipelihara dalam jaring apung ukuran 7×7×3 m3, selama 70 hari.  Ikan diberi pakan dengan frekuensi yang sama sebanyak 5 kali/hari. Perlakuan pada penelitian ini adalah teknik pemberian pakan, yaitu ikan pada jaring pertama diberi pakan sebanyak 6% dari bobot biomassa, sementara pada jaring kedua ikan diberi pakan sekenyangnya (at satiation).  Hasil penelitian menunjukkan bahwa pemberian pakan dengan metode sekenyangnya (at satiation) menghasilkan nilai FCR sebesar 1,86 yang relatif lebih efisien dibandingkan dengan sebanyak 6% berdasarkan bobot biomassa (1,91). Produktivitas akhir ikan dengan pemberian pakan sekenyangnya 70 hari pemeliharaan dalam jaring apung di waduk Jatiluhur mencapai 1.241 kg. Kata kunci: ikan mas, Cyprinus carpio, FCR, Keramba jaring apung, at satiation