scholarly journals Penentuan bobot kayu apu Pistia stratiotes L. sebagai fitoremediator dalam pendederan ikan gurami Lac. ukuran 3 cm

2016 ◽  
Vol 15 (2) ◽  
pp. 180
Author(s):  
Kukuh Nirmala ◽  
Sulistia Wardani ◽  
Yuni Puji Hastuti ◽  
Wildan Nurusallam
Keyword(s):  
Water Quality ◽  
Growth Rate ◽  
Feed Efficiency ◽  
Specific Growth ◽  
Weight Ratio ◽  
Stocking Density ◽  
Pistia Stratiotes ◽  
Water Lettuce ◽  
Quality Technology ◽  
Absolute Length

<p class="BasicParagraph"><strong>ABSTRACT</strong></p><p class="BasicParagraph"> </p><p class="BasicParagraph">The use of high stocking density in nursery causes a decrease of  water quality. Technology that can be used to solvethe low water quality in nursery of giant goramy was phytoremediation using <em>Pistia stratiotes</em> L. Purpose of this research was to determine the best weight ratio between <em>P. stratiotes</em> L. and 33 L water in nursery giant goramy size 3 cm. Giant goramy size 3 cm was maintained in an aquarium and was treated with different weight of <em>P. stratiotes</em> L. consisted of 45 g, 90 g, 135 g, and controls <em>P. stratiotes</em> L. 0 g. Cleaning and water change was done once a week. This research showed that the treatment of <em>P. startiotes</em> L. 45g/33 L water gave the best result in survival rate, absolute length of the growth, specific growth rate, feed efficiency and economically profitable.</p><p class="BasicParagraph"> </p><p class="BasicParagraph">Keywords: phytoremediation, water lettuce, <em>Osphronemus goramy</em> L., nursery</p><p class="BasicParagraph"><strong> </strong></p><p class="BasicParagraph"><strong> </strong></p><p class="BasicParagraph"><strong>ABSTRAK</strong></p><p class="BasicParagraph"><strong> </strong></p><p class="BasicParagraph">Penggunaan padat tebar tinggi pada pendederan ikan gurami mengakibatkan kualitas air menjadi buruk. Salah satu teknologi yang bisa digunakan untuk mengatasi kualitas air yang buruk pada pendederan ikan gurami adalah fitoremediasi menggunakan tanaman kayu apu. Tujuan penelitian ini adalah menentukan bobot kayu apu dengan volume air 33 L pada pendederan ikan gurami ukuran 3 cm. Ikan gurami ukuran 3 cm dipelihara di dalam akuarium dan diberi perlakuan bobot tanaman kayu apu berbeda yaitu 45 g, 90 g, dan 135 g, serta kontrol  (kayu apu 0 g). Penyiponan dan pergantian air dilakukan setiap satu minggu sekali. Hasil penelitian menunjukkan bahwa perlakuan kayu apu 45 g/33 L air menunjukkan hasil tingkat kelangsungan hidup, pertumbuhan panjang mutlak, laju pertumbuhan bobot harian, efisiensi pakan yang paling baik, serta lebih menguntungkan dibandingkan dengan perlakuan kontrol (kayu apu 0 g).</p><p class="BasicParagraph"> </p><p>Kata kunci: fitoremediasi, kayu apu, <em>Oshpronemus goramy</em> L., pendederan</p><p> </p>

scholarly journals Utilization of Fermented Pistia stratiotes L. Flour in Diet for Growth Asian Redtail Catfish (Hemibagrus nemurus)

2021 ◽  
Vol 9 (1) ◽  
pp. 23
Author(s):  
Geri Gunawan ◽  
Adelina Adelina ◽  
Indra Suharman
Keyword(s):  
Growth Rate ◽  
Survival Rate ◽  
Feed Efficiency ◽  
Specific Growth ◽  
Economic Value ◽  
Stocking Density ◽  
Pistia Stratiotes ◽  
Soybean Flour ◽  
Randomized Design ◽  
Completely Randomized Design

Asian redtail catfish (Hemibagrus nemurus) are fish that have high economic value. The Aimed of this study was to know of the effect the use of fermented Pistia stratiotes flour and to know the percentage of best P. stratiotes flour fermentation on the growth of Asian redtail catfish fingerling. The method in this study is a completely randomized design (CRD) with five treatments and three replications, the treatments are P0 (100% soybean flour, 0% fermented P. stratiotes flour), P1 (TK 95%, TKAT 5%), P2 (P2 TK 90%, TKAT 10%), P3 (TK 85%, TKAT 15%), and P4 (TK 80%, TKAT 20%). The fish used were 5.00 ± 1.00 cm long and weighed 1.50 ± 0.50 g, with a stocking density of 20 fish/m3. Fish are kept for 56% with a frequency of feeding three times a day. The results showed that the substitution of fermented P. stratiotes flour was able to effect the growth of Asian redtail catfish. The dosage of fermented P. stratiotes flour as much as 15% gives the best results on the growth of Asian redtail catfish, namely the specific growth rate (SGR), feed efficiency, and survival rate of 3.93%, 46.47% and 96.7%.

scholarly journals Survival and growth responses of snakehead fish Channa striata Bloch. juvenile in aerated and unaerated acid sulfate water

2017 ◽  
Vol 16 (1) ◽  
pp. 60
Author(s):  
, Purnamawati ◽  
Daniel Djokosetiyanto ◽  
Kukuh Nirmala ◽  
Enang Harris ◽  
Ridwan Affandi
Keyword(s):  
Growth Rate ◽  
Blood Glucose ◽  
Specific Growth Rate ◽  
Feed Efficiency ◽  
Specific Growth ◽  
Stocking Density ◽  
Water Volume ◽  
Growth Responses ◽  
Acid Sulfate ◽  
Channa Striata

<p><strong>ABSTRACT </strong></p><p> </p><p>The aim of the research was to analyze survival rate, specific growth rate, albumin, and feed efficiency and physiological (blood glucose, cortisol, dan haemoglobin) responses of snake head fish juvenil that reared at aerated and unaerated of tidal land water have been conducted in the laboratory. Experiments using completely randomized design with aerated and unaerated as a treatment, and each treatment has twelve replications. The snakehead fish juvenil wich length 2.4±0.2 cm and weight of 0.21±0.05 g reared in the aquarium that are size 30×25×35 cm (water volume 25 L) with a stocking density 2 juvenile/L, for 40 days. The fishes were fed with commercial feed with protein content about 40%, feeding two times a day (morning and afternoon) were at satiation. Replacement of water done every two days about 10% of the total water volume in the aquarium. The results showed that unaerated median significantly affected to biometric and physiological response of juvenile of snake head fish. The media un-aerated gives the best results shown by the higher value of survival (92%), specific growth rate (6.73%/ day), feed efficiency (78.22%), protein retention (41.91%), energy retention (30.81%) value of albumin (6.60 g/100 mL) and the haemoglobin (5.58 g/dL), and have the lowest value of cortisol (21.49 ng/L) and blood glucose (43.36 mg/100 mL).</p><p> </p><p>Keywords: acid sulfate water, growth rate, aeration, <em>Channa striata </em></p><p><em> </em></p><p> </p><p><strong>ABSTRAK </strong></p><p> </p><p>Penelitian ini bertujuan untuk menganalisis respons kelangsungan hidup, pertumbuhan spesifik, albumin, dan efisiensi pakan dan fisiologis (kortisol, glukosa darah, dan hemoglobin) juvenil ikan gabus yang dipelihara dengan dan tanpa aerasi pada media air rawa pasang surut. Penelitian menggunakan rancangan acak lengkap dengan aerasi dan tanpa aerasi sebagai perlakuan, dan masing-masing perlakuan memiliki 12 ulangan. Juvenil ikan gabus berukuran panjang 2,4±0,3 cm dan bobot 0,21±0,03 g dipelihara dalam akuarium 30×25×35 cm (volume 25 L) dengan padat tebar 2 ekor/L, selama 40 hari. Ikan diberi pakan berupa pakan komersial dengan kadar protein ±40%, pemberian pakan dua kali sehari (pagi dan sore) <em>at satiation</em>. Penggantian air dan penyiponan dilakukan dua hari sekali sebanyak 10% dari volume total dalam akuarium. Hasil penelitian menunjukkan bahwa perlakuan tanpa aerasi berpengaruh nyata terhadap respons biometrik dan fisiologis juvenil ikan gabus. Media tanpa aerasi memberikan hasil yang lebih baik ditunjukkan oleh kelangsungan hidup (92%), laju pertumbuhan spesifik (6,73%/ hari), efisiensi pakan (78,22%), retensi protein (41,91%), retensi energi (30,81%), kadar albumin (6,60 g/100 mL), dan hemoglobin (5,85 g/dL) yang lebih tinggi, sedangkan kadar kortisol (219 ng/L) dan glukosa darah (43,36 mg/100 mL) yang terendah.</p><p> </p><p>Kata kunci: media sulfat masam, pertumbuhan, aerasi, <em>Channa striata</em></p>

scholarly journals Growth of Goramy (Osphronemus goramy Lac 1801) Monoculture and Polyculture with Nilem (Osteochilus hasselti C.V)

2021 ◽  
pp. 28-35
Author(s):  
Ayi Yustiati ◽  
Esa Jaya Dinata ◽  
Herman Hamdani ◽  
Ibnu Bangkit
Keyword(s):  
Water Quality ◽  
Growth Rate ◽  
Survival Rate ◽  
Feed Efficiency ◽  
Stocking Density ◽  
Pond Water ◽  
National Standard ◽  
Daily Growth Rate ◽  
Daily Growth ◽  
Randomized Design

This research was conducted to determine the optimal density of gorami (Osphronemus goramy Lac 1801) and nilem (Osteochilus hasselti C.V) polyculture with varios nilem density. The research are carried out in the maintenance pool of the Kawungsari Fish Farmers Group, Kertayasa Village, Pangandaran Regency, Indonesia. The research method used is an experimental method with 4 treatments and 4 replications using Completely Randomized Design (CRD). Variation of stocking densities carried out with the ratio of gorami: nilem is 30 : 0 fish m2 -1 (control), 30:10 fish m2 -1, 30: 20 fish m2 -1 and 30: 30 fish m2 -1. The fish are kept for 40 days in a pond with an area of 6 x 8 m and a height of 1.2 m. The fish used are gorami with 6-8 cm long and nilem with 4-6 cm long, gorami fish from the PangandaranKertayasa farmer group and nilem fish come from the seed hall which triggers gorami stock and nilem (BPPSIGN) Tasikmalaya. Obtained data are done at the beginning of the study and every 10 days, namely on day 10th, 20th, 30th and 40th. The parameters observed included daily growth rate, survival rate, feed efficiency, periphyton abundance and water quality. The results showed the stocking density of 30 fish m2 -1gorami with 20 fish m2 -1nilem was the most optimal stocking density with survival rate of 93.5%, daily growth rate of 1.19%, and gorami’s feed efficiency is 32.66%. Pond water quality including temperature, pH and dissolved oxygen is still within optimum range in accordance with the Indonesian National Standard for maintenance of gorami and nilem.

scholarly journals The Comparison of Water Spinach (Ipomoea aquatica) Density Using Aquaponic System Through Reduced Concentration of Ammonia (NH3), Nitrite (NO2), Nitrate (NO3) And Its Influence On Conversion Rate and Feed Efficiency To Increase The Survival Rate And Growth Rate of African Catfish (Clarias sp.) Intensive

2019 ◽  
Vol 8 (2) ◽  
pp. 113
Author(s):  
Prayogo Prayogo
Keyword(s):  
Water Quality ◽  
Growth Rate ◽  
Survival Rate ◽  
Specific Growth Rate ◽  
Feed Efficiency ◽  
Specific Growth ◽  
Nitrate Content ◽  
African Catfish ◽  
Water Spinach ◽  
Measurement Results

In intensive aquaculture farming activities will generate solid waste and liquid waste that comes from feces and leftover fish feed. The waste accumulation can lead to deterioration of water quality that affects the physiological processes, behavior, growth, and mortality of fish. Technological innovation is needed for the management of water quality and increase productivity as a result of shrinkage of cultivated land. One of the technological innovations that can be applied, namely the incorporation of fish farming with crops through Aquaponics system. This study aims to determine the effects of water spinach optimum density to absorb waste ammonia (NH3), nitrate (NO3) and nitrite (NO2) optimally to increase the survival rate and growth rate of african catfish (Clarias sp.) intensive As well as to see its effect on conversion rates and feed efficiency with aquaponics system. The method used is the experimental method. The experimental research is used to determine the effect of certain variable towards a group under controlled conditions. The results of measurements of ammonia levels during P0 showed that the treatment significantly different (p <0.05) with treatment P1; P2; and P3. P3 treatment with water spinach number 40 stems provide maximum results in lowering the concentration of ammonia compared with treatment P0 (without spinach), P1 (20 water spinach), and P2 (30 water spinach). The measurement results nitrite levels during the observation showed that all treatments there were no significant differences (p> 0.05). The measurement results also showed that the nitrate content whole of observation results showed that all treatments there were no significant differences (p> 0.05). The best feed conversion ratio was found in P3 treatment of 1.08. The best feed efficiency was found in P3 treatment 92,25%. The highest survival rate was found in P3 treatment (88.69%) in maintenance medium and lowest survival rate was in P0 treatment (26,71%) without water spinach  (control). The highest specific growth rate was found in P3 treatment (1.15%), while the lowest specific growth rate was in treatment P0 (0.79%).Results of water quality measurement supporting all treatments decreased and increased. The supporting water quality are temperature, pH, and dissolved oxygen. The decrease and increase in support water quality is caused by environmental factors such as weather. Other parameters were observed in addition to supporting the water quality is water spinach plant growth. Value growth water spinach is best found in treatment P3. In the treatment P3 water spinach growth rose 5.14 cm with an initial size of 10.92 into 16.06.

scholarly journals LAJU PERTUMBUHAN DAN EFISIENSI PAKAN IKAN NILA (Oreochromis niloticus) YANG DIPELIHARA DALAM KOLAM TERPAL YANG DIPUASAKAN SECARA PERIODIK

2018 ◽  
Vol 5 (1) ◽  
pp. 45-55
Author(s):  
Intan Permata Sari ◽  
Yulisman . ◽  
Muslim .
Keyword(s):  
Water Quality ◽  
Growth Rate ◽  
Survival Rate ◽  
Specific Growth Rate ◽  
Feed Efficiency ◽  
Specific Growth ◽  
Specific Weight ◽  
Feed Consumption ◽  
Weight Growth ◽  
Randomized Design

ABSTRACT    Starved was one effort that can reduce the feed consumption and feed residues without decreasing growth of cultured fish. The purpose of this research was to determine the effect of starved periodically to the specific growth rate and feed efficiency of tilapia reared in the pond. The research had been conducted in Laboratorium Budidaya Perairan, Faculty of Agriculture, Sriwijaya Unversity on April – Juni 2016. This research method used Completely Randomized Design with four treatments and three replications that was every day feed without starvation (P0), one day feed one day starvation (P1), two days feed one day starvation (P2) and three days feed one day starvation (P3). Parameters of this research are specific growth rate, feed efficiency, survival rate and water quality (temperature, pH, DO, ammonia). The result showed that starved periodically significantly effect to the growth rate and feed efficiency of cultured tilapia in the pond. Treatment P1 (one day feed one day starvation) gave highest specific weight growth rate and specific length growth rate which were 2.32%.day-1 and 1.27%.day-1 then feed efficiency was 84.46%. The highest survival rate occurred in treatment P1 (one day feed one day starvation) 82%. Water quality of this research were temperature 27.0-31.5 oC,  pH 6.8-7.9, dissolved  oxygen 4.53-7.23 mg.L-1, and ammonia 0.01-0.30 mg.L-1. Keywords : Feed Efficiency, Specific growth rate, Starved, , Tilapia.

Performance Of Milkfish (Chanos chanos) Cultured by Different Stocking Density in Floating Net Cages Lake Batur, Trunyan Village, Bali

2021 ◽  
Vol 5 (1) ◽  
pp. 29
Author(s):  
Gede Dwi Sukmawantara ◽  
I Wayan Arthana ◽  
Gde Angga Raka Kartika
Keyword(s):  
Water Quality ◽  
Growth Rate ◽  
Survival Rate ◽  
Stocking Density ◽  
Fish Length ◽  
Chanos Chanos ◽  
Absolute Length ◽  
The Difference ◽  
Net Cages ◽  
Fish Survival

Lake Batur is the largest lake in the island of Bali. Lake Batur is widely used by the community in the aquaculture sector, namely floating net cage cultivation. The research aims to determine the influence of different stocking density on the growth rate and survival rate of the milkfish (Chanos chanos) in the 4 x 1 meters floating net cages in Lake Batur, Trunyan village. Data collection was done every two weeks during two months observation, from January 2020 – March 2020. The research used a complete random design consisting of three treatments and three replications of each treatment, which the treatment A of 15 fish/0.25m3, treatment B of 20 fish/0.25m3, and the treatment C of 25 fish/0.25m3. Measurements of fish length, fish weight, and water quality were done in situ. The results showed that the difference in stocking density had no effect on the absolute length, but those difference had an effect on the specific growth rate (SGR) and the survival rate of the fish. Treatment B resulted a maximum value of the growth rate, with an absolute length value of 0.69 ± 0.115cm/2 month and SGR 1.02 ± 0.095%/day. The fish survival rate at treatment A resulted in the highest value of 89 ± 3.46%/2 month. The value of water quality during the study were temperature of 25.9 ± 0.8oC, DO of 8.3 ± 0,1 mg/L, pH of 9.4 ± 0.2, and TDS of 995.5 ± 70.8 ppm.

scholarly journals Utilization of Papaya Leaves (Carica papaya) in Feed on Growth of Catfish (Clarias sp.) in Muara Enim, South Sumatera

2021 ◽  
Vol 4 (1) ◽  
pp. 50-56
Author(s):  
Muhamad Sidiq Irsyadil Firdaus ◽  
Retno Cahya Mukti
Keyword(s):  
Growth Rate ◽  
Specific Growth Rate ◽  
Feed Efficiency ◽  
Specific Growth ◽  
Fish Growth ◽  
Absolute Weight ◽  
Length Growth ◽  
Weight Growth ◽  
Alternative Ingredients ◽  
Absolute Length

The feed must have a quality that matches the needs of the fish to produce high fish growth. Feed quality can be improved by adding alternative ingredients to feed. One alternative material that can be used is papaya leaves. The purpose of this study was to determine the effect of adding papaya leaves to feed on the growth of catfish (Clarias sp). This research was conducted in Muara Enim, South Sumatra in August 2020. The treatments were P0: control (without adding papaya leaves) and P1: with the addition of papaya leaves. The data observed included absolute growth, specific growth rate, feed efficiency, and survival. Fish maintenance data that obtained in treatment P0, that absolute weight growth of 8.43 g, absolute length growth 5.13 cm, specific growth rate 6.41 %, feed efficiency 95.77 %, and survival 76 %, while in P1 treatment using leaves papaya produced absolute weight growth of 10.57 g, absolute length growth of 5.17 cm, the specific growth rate of 5.84 %, feed efficiency 100.83 %, and survival 60 %. The results obtained indicate that the provision of papaya leaves affects the growth of catfish.    

scholarly journals Association between periphyton and bioflocs systems in intensive culture of juvenile Nile tilapia

2016 ◽  
Vol 38 (2) ◽  
pp. 119 ◽  
Author(s):  
Davi De Holanda Cavalcante ◽  
Francisco Roberto dos Santos Lima ◽  
Vanessa Tomaz Rebouças ◽  
Marcelo Vinícius do Carmo e Sá
Keyword(s):  
Water Quality ◽  
Growth Rate ◽  
Nile Tilapia ◽  
Specific Growth ◽  
Block Design ◽  
Intensive Culture ◽  
Effluent Quality ◽  
Intensive Farming ◽  
Randomized Block Design ◽  
Underwater Structure

The present work aimed at determining the effects of the association between the periphyton-based system with the bioflocs-based system in the intensive culture of juvenile Nile tilapia (1.56 ± 0.07 g; 72 fish m-3), on variables of water quality, growth performance and effluent quality after 10 weeks. The experiment was arranged in a 2 x 2 factorial randomized block design with four treatments and five repetitions each. The factors tested were the following: ‘underwater structure’ (absence and presence) and ‘adjustment of the C: N ratio of water’ (no and yes). The final fish body weight, specific growth rate and yield were higher (p < 0.05) in the C: N-adjusted tanks. The presence of submerged structures in the tanks had no significant influence on those same variables. It was concluded that the periphyton-based system is not indicated for intensive farming of Nile tilapia, in which there is a high allowance of artificial feed to fish. 

scholarly journals ANALISIS KARAKTER REPRODUKSI DAN PERFORMA BENIH HIBRID IKAN NILA PANDU F6 DENGAN IKAN NILA NILASA (Oreochromis niloticus) Analysis of the Character Reproduction and Seed Hybrid Performance 0f Tilapia Fish F6 Pandu with Nilasa Tilapia (Oreochromis niloticus)

2017 ◽  
Vol 12 (1) ◽  
pp. 19
Author(s):  
Dio Patria Yustysi ◽  
Fajar Basuki ◽  
Titik Susilowati ◽  
Tristiana Yuniarti
Keyword(s):  
Water Quality ◽  
Growth Rate ◽  
Survival Rate ◽  
Specific Growth Rate ◽  
Oreochromis Niloticus ◽  
Egg Size ◽  
Specific Growth ◽  
Fish Farming ◽  
Hatching Rate ◽  
Feed Conversion

ABSTRAK Penelitian ini bertujuan untuk mengetahui pengaruh dari hibridisasi ikan nila Pandu F6 dengan nila Nilasa terhadap karakter reproduksinya dan performa benih yang dihasilkan. Penelitian ini dilakukan dengan metode eksperimental menggunakan Rancangan Acak Lengkap (RAL) dengan 4 perlakuan dan 3 kali ulangan. Perlakuan dalam penelitian ini: perlakuan A (Pandu F6 ♀><Pandu F6 ♂), B (Nilasa ♀><Nilasa ♂), C (Pandu F6 ♀>< Nilasa ♂), dan D (Nilasa ♀><Pandu F6 ♂). Data yang diamati meliputi fekunditas, daya tetas telur, diameter dan bobot telur, panjang dan bobot larva TL, panjang dan bobot larva lepas kuning telur, kelulushidupan, laju pertumbuhan spesifik, konversi pakan dan kualitas air. Hasil penelitian menunjukan nilai terbaik pada fekunditas sebesar 1191,67 ± 239,45 butir/200 g, daya tetas telur sebesar 80,93 ± 3,90%, kelulushidupan sebesar 81,55 ± 7,54%, laju pertumbuhan spesifik sebesar 7,26 ± 0,25, konversi pakan 0,54 ± 0,02 didapatkan pada perlakuan C, akan tetapi untuk diameter dan bobot telur, panjang dan bobot larva Kuning Telur, dan panjang dan bobot larva lepas kuning telur tidak berbeda nyata. Hasil tersebut menunjukan bahwa hibridisasi (perlakuan C) memberikan pengaruh yang nyata (P < 0,05) terhadap fekunditas, daya tetas telur, kelulushidupan, laju pertumbuhan spesifik, dan konversi pakan tetapi tidak berpengaruh terhadap diameter dan bobot telur, panjang dan bobot larva, dan panjang dan bobot larva lepas kuning telur. Kata kunci: Hibridisasi, Ikan Nila, Karakter Reproduksi, Performa Benih  ABSTRACT This research aims to know the influence of hybridization tilapia fish Pandu F6 with nila Nilasa against the character of the reproduction and seed performance. This research was conducted with the experimental method using Random Design complete (RAL) with 4 treatments and three replicates. The treatments in this study: the treatment A (Pandu F6 F6 ♀ >< Pandu ♂), B (Nilasa ♀>< Nilasa ♂), C (Pandu F6 ♀>< Nilasa ♂), and D (Nilasa ♀ >< Pandu F6 ♂). The observed data covering fecundity, hatching rate, egg size, yolk sack larva length and weight, length and weight of the egg yolk off larvae, survival rate, specific growth rate, feed conversion rate, and water quality. The results showed the best value on the fecundity of 1191.67±239.45 eggs/200 g, Hatching rate 80.93 ± 3.90%, Survival rate of 81.55 ± 7.54%, specific growth rate of 7.26 ± 0.25, conversion fodder 0.54 ± 0.02 obtained at the treatment C, but for the diameter and weight of egg, larval length and weight TL, and the length and weight of the yolk egg off larvae for each treatment do not differ markedly. The results showed that hybridization (treatment C) gives a real influence (P < 0.05) of fecundity,hatching rate, survival rate but not with the egg size, larva weight and length, and the length and weight of larvae off yolk. Water quality on the spawning, hatching eggs and larvae found on the maintenance of a decent range for tilapia fish farming Keywords: hybridization, tilapia fish, character of the reproduction, seed performance 

scholarly journals Production performance and business analysis of clown loach Chromobotia macracanthus (Bleeker 1852) in recirculating systems with different stocking densities and water discharge

2021 ◽  
Vol 21 (2) ◽  
pp. 89-104
Author(s):  
Riska Puluhulawa ◽  
Tatag Budiardi ◽  
Iis Diatin ◽  
Irzal Effendi
Keyword(s):  
Water Quality ◽  
Growth Rate ◽  
Business Performance ◽  
Water Discharge ◽  
Stocking Density ◽  
Production Performance ◽  
Recirculate Aquaculture System ◽  
Randomized Design ◽  
Two Factors ◽  
Absolute Growth

Efforts to improve the production performance of clown loach in recirculate aquaculture system can be done by increasing stocking density and water discharge. This study aimed to analyze the effect of increasing stocking density and water discharge on production performance, stress response and water quality in order to obtain the best stocking density and water discharge to obtain maximum profit in a short time. A factorial completely randomized design with two factors, i.e. the stocking density of 1, 2, and 3 fish L-1 and the water discharge of 0,05; 0,10; 0,15 L s-1 was performed. The volume of water used in each aquarium was 48 L and using a ½ inch faucet stop to regulate the water discharge from the inlet pipe. Clown fish fed Tubifex sp. with a feeding frequency of two times a day according to the treatment for 60 days. The result indicates that there was no interaction between the two factors on production performance, payback period, and R/C ratio. Stocking density has a significant effect on specific growth rate, absolute growth rate of individual weight, feeding consumption rate and R/C ratio of clown loach. Stocking density and water discharge had an interaction on the visual color of pectoral and caudal fins of clown loach. Different stocking densities with the combination of water discharge in this study resulted that the water quality were within tolerable range for clown loach so that they did not experience stress, as well as high production and business performance. It is recommended to intensify clown loach with a stocking density of 3 fish L-1 and 0,15 L s-1‑ of water discharge.

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