scholarly journals KEPADATAN OPTIMUM UNTUK MENUNJANG TINGKAT KELANGSUNGAN HIDUP BENIH IKAN BANDENG (Chanos chanos) PADA TRANSPORTASI SISTEM TERTUTUP

2019 ◽  
Vol 19 (1) ◽  
Author(s):  
Mas Bayu Syamsunarno ◽  
Muh Kholik Maulana ◽  
Forcep Rio Indaryanto ◽  
Mustahal Mustahal
Keyword(s):  
Oxygen Consumption ◽  
Survival Rate ◽  
Closed System ◽  
Consumption Rate ◽  
Ammonia Nitrogen ◽  
Average Weight ◽  
Chanos Chanos ◽  
Optimum Density ◽  
Long Time ◽  
Total Ammonia

Abstract: This research aims to determine the optimum density in closed system transportation of milkfish juvenile. Milkfish juveniles used in the research had an average weight 1.48±0.12 g. The study consisted of several stages, namelydetermining the ability to fast fish, determining the level of oxygen consumption, determining the rate of excretion of total ammonia nitrogen and determining the optimum density in transportation for 48 hours.The treatments were performed differences in the density of 100, 150, 200, and 250 fish/L using polyethylene plastic size 35x50 cm and styrofoam size of 75 × 43 × 40 cm.The results showed the seed fish can survive and swim actively for 7 days without feeding with oxygen consumption rate as much as 2640 mgO2 and TAN excretion rate 0.1200 mg/L. The different treatment of density had an effect on the survival rate of milkfish juvenile. The optimal density for transportation of milkfish juvenile size 1.48 ± 0.12 g in a closed transportation system with a time of 48 hours is 150 juvenile/L with a 100% survival rate. At the density 250 juvenile/L, the can be done with a long time of 30 hours and resulted in a survival rate above 99%.  Keyword: Chanos chanos, Density, Transportation closed system, Survival rate, Water Quality Abstrak: Penelitian ini bertujuan untuk menentukan kepadatan optimal dan lama waktu dalam transportasi sistem tertutup benih ikan bandeng.Benih ikan bandeng yang digunakan memiliki bobot rata-rata 1,48±0,12g. Penelitian terdiri dari beberapa tahap, yaitu penentuan ketahanan ikan tanpa diberi makan, tingkat konsumsi oksigen, laju ekskresi total amoniak nitrogen dan kepadatan optimal benih ikan bandeng dalam transportasi selama 48 jam. Perlakuan yang dilakukan perbedaan kepadatan yaitu 100, 150, 200, dan 250 ekor/L dengan menggunakan plastik polyetylen (PE) ukuran 35x50 cm dan styrofoam ukuran 75×43×40 cm.Hasil penelitian menunjukkan benih ikan bandeng mampu bertahan hidup dan berenang aktif selama 7 hari pemuasaan ikan dengan tingkat konsumsi oksigen sebanyak 2640 mgO2 dan laju ekskresi TAN 0,1200 mg/L.Perlakuan perbedaan kepadataan berpengaruh terhadap kelangsungan hidup benih ikan bandeng.Kepadatan optimal untuk transportasi benih ikan bandeng ukuran 1,48±0,12 g/ekor pada sistem transportasi tertutup selama 48 jam adalah 150 ekor/L dengan tingkat kelangsungan hidup 100%. Pada kepadatan 250 ekor/L, transportasi dapat dilakukan dengan lama waktu 30 jam dan menghasilkan tingkat kelangsungan hidup di atas 99%. Kata Kunci: Ikan bandeng, Kepadatan, Kualitas Air, Transportasi sistem tertutup, Tingkat Kelangsungan Hidup

scholarly journals The addition of salt in the water media containing zeolite and active charcoal on closed system transportation of gourami fish fry Osphronemus goramy Lac.

2013 ◽  
Vol 11 (2) ◽  
pp. 190
Author(s):  
Kukuh Nirmala ◽  
Yani Hadiroseyani ◽  
Riza Purbo Widiasto
Keyword(s):  
Oxygen Consumption ◽  
Survival Rate ◽  
Closed System ◽  
Activated Charcoal ◽  
Ammonia Nitrogen ◽  
Active Charcoal ◽  
Fish Mortality ◽  
Primary Study ◽  
Growth And Survival ◽  
Preliminary Study

<p>Transportation of fish fry with high density in closed system will reduce levels of O2, increasing CO2 and NH3, will also elevate the fish stress so that increase fish mortality. To reduce the effects of increased CO2 and NH3 can be applied by using zeolite and activated charcoal, while to reduce the fish stress is through the addition of salt. This study aims to determine the dose of salt added into the water containing zeolite and activated charcoal in a closed transportation system with a high fry density for 72 hours. The study was conducted two stages, namely the preliminary study and the primary study. The preliminary study involved the observation of the survival rate of fish fry during fasting, oxygen consumption rate of fish fry, the rate of total ammonia nitrogen (TAN) excretion of fish fry, and the adsorption capacity of TAN by zeolite and activated charcoal. In the primary study, fry transport simulations was carried out for 72 hours in the laboratory. Gourami fry (body length of 4 cm and body weight of 1.7 g) with the fry density of 50 fish/L were placed in the packing bag which has been filled with zeolite as much as 20 g/L and activated charcoal as much as 10 g/L. The study used a completely randomized design with five treatments and two replications: A: blank (without zeolite, activated charcoal, and salt), B: control (20 g/L zeolite+10 g/L activated charcoal), C: 20 g/L zeolite+10 g/L activated charcoal and 1 g/L salt, D: 20 g/L zeolite+10 g/L activated charcoal and 3 g/L of salt, and E: 20 g/ L zeolite+10 g/L activated charcoal and 5 g/L salt. The results of preliminary study showed that the survival rate of fish fry was 100% and active swimming for five days without food, the level of oxygen consumption as much as 1340.28 mgO2, produce NH3 as much as 22.64 mg/L, while zeolite and activated charcoal adsorbs &gt;50% of TAN in time of 120 seconds. In the primary study, the survival rate of fish fry during the 72-hour transportation for treatments A, B, C, D, and E, were 0%, 57%, 59%, 65% and 74%, respectively. Treatment E with survival rate of 74% was obtained at NH3 concentration of 0.016±0.069 mg/L and CO2 as high as 89.89 mg/L while the DO of 4.26 mg/L. The highest growth and survival rate of fry for 17 days post-transportation was treatment E, accounting to 2.95% and 100%, respectively.</p><p>Keywords: zeolite, active charcoal, closed system transportation, survival rate, gourami fish</p>

scholarly journals Density-dependent Growth of Endangered Labeo bata (Hamilton, 1822) in Nursery Ponds

2016 ◽  
Vol 9 (1) ◽  
pp. 67-73
Author(s):  
MA Samad ◽  
MM Rasid ◽  
MR Haque ◽  
AK Paul ◽  
H Ferdaushy
Keyword(s):  
Survival Rate ◽  
Growth Performance ◽  
Stocking Density ◽  
Ammonia Nitrogen ◽  
Average Weight ◽  
Mean Values ◽  
Labeo Bata ◽  
Survival And Growth ◽  
The Mean ◽  
Dependent Growth

The effect of stocking density on growth performance and survival rate of endangered Labeo bata, was conducted in nursery ponds from 14th June to 13th August, 2013. Three different stocking densities viz. 500, 600 and 700 piece-1 decimal were assigned as treatment T1, T2 and T3, respectively. The initial average weight of L. bata was 0.15±008 g. Hatchlings in all the nursery ponds were fed indigenous feed (26.95% crude protein) for 8 weeks. Temperature, ammonia nitrogen, pH had no significant differences (P<0.05). Final weight (g) was found to be the highest (4.06±0.06) in T1 and the lowest (3.20±0.03) in T3. The mean values of weight gain (g) was the highest (3.91±0.06) in T1 and the lowest (3.05±0.03) in T3. SGR was highest (5.49±0.02) in T1 and lowest (5.09±0.02) in T3. Yet again, survival rate was highest (70.33±0.88) in T1 where stocking density was the lowest among those aforementioned three treatments and lowest (61.00±0.58) in T3 where the stocking density was the highest among the treatments. And finally production (kg-1ha) was found highest (352.66±4.42) in T1 and lowest (337.50±3.19) in T3. Rearing of the Labeo bata fry in those three different stocking densities showed significant (p<0.05) variation both in highest survival and growth performance. Overall production of L. bata in treatment T1 was significantly higher than that of the other two treatments T2 and T3. Despite of this, consistently higher CBR was found from treatments T1 (1:1.78) than from treatment T2 (1:1.25) and T3 (1:1.06).J. Environ. Sci. & Natural Resources, 9(1): 67-73 2016

scholarly journals Effects of Probiotics on Growth and Survival of Shrimp (Penaeus monodon) in Coastal Pond at Khulna, Bangladesh

2013 ◽  
Vol 5 (2) ◽  
pp. 363-370 ◽  
Author(s):  
M. I. Hossain ◽  
M. I. Hossain ◽  
M. M. Kamal ◽  
M. A. Mannan ◽  
M. A. B. Bhuyain
Keyword(s):  
Water Quality ◽  
Survival Rate ◽  
Health Management ◽  
Average Daily Gain ◽  
Penaeus Monodon ◽  
Ammonia Nitrogen ◽  
Water Quality Parameter ◽  
Average Weight ◽  
Final Body Weight ◽  
Growth And Survival

The study was carried out for 138 days to know the growth and survival rate of P. monodon by applying probiotics in Gazi Fish Culture Ltd. Dacope, Khulna, Bangladesh. Six experimental ponds (4000 m2 in size i.e. one acre) were selected of which three were probiotic ponds and three were controlled. After pond preparation, PL15 (average weight of each 4.75±0.09 g) was stocked at the rate of 13 per m2 following polymerase chain reaction (PCR) test. CP NASA shrimp feed was used during the study period.  Transparency, salinity, pH, dissolved oxygen (DO), temperature, total Ammonia Nitrogen (TAN) were recorded by standard measurements. The average final body weight of the harvested shrimp is 37.67±1.15 g in probiotics ponds and 27.33±0.58 g in controlled ponds and the difference was significant (P < 0.01) between these two productions. The average survival rate was 90.67±1.15 % in probiotic pond and 71.00±3.0 % in controlled pond. The average daily gain (ADG) in weight was 0.27±0.01 g and 0.19±0.01 g in probiotic and controlled ponds, respectively. The result showed that probiotic plays an important role in maintaining water quality parameters, soil quality and health management as well as increases the growth and survival of shrimp.Key words: Probiotics; P. monodon; Water quality parameter; Growth rate; Survival rate.© 2013 JSR Publications. ISSN: 2070-0237 (Print); 2070-0245 (Online). All rights reserved.doi: http://dx.doi.org/10.3329/jsr.v5i2.11815         J. Sci. Res. 5 (2), 363-370 (2013)

scholarly journals Retrofitting Sea Cucumber Nursery Tanks to Recirculating Aquaculture Systems for Highly Intensive Litopenaeus vannamei Aquaculture

2021 ◽  
Vol 11 (20) ◽  
pp. 9478
Author(s):  
Yishuai Du ◽  
Jianping Xu ◽  
Li Zhou ◽  
Fudi Chen ◽  
Tianlong Qiu ◽  
...  
Keyword(s):  
Litopenaeus Vannamei ◽  
Sea Cucumber ◽  
Stocking Density ◽  
Ammonia Nitrogen ◽  
Average Weight ◽  
Recirculating Aquaculture ◽  
Nitrite Nitrogen ◽  
Innovative Methodology ◽  
Recirculating Aquaculture Systems ◽  
Total Ammonia

Designing good recirculating aquaculture systems (RASs) is challenging in shrimp aquaculture. In this study, two sets of RASs were constructed using sea cucumber nursery tanks for rearing Litopenaeus vannamei. Recirculating aquaculture was supported by key technologies such as sewage collection and aeration systems adapted to the rectangular tanks and technologies for the removal of sewage, shrimp shells, and dead individuals. Six-hundred and eighty-five thousand juveniles were selected for rearing in the newly constructed RASs, where the average stocking density was 1013 shrimp/m3. During the recirculating aquaculture period of 53 days, the water temperature of the tanks was 24–31 °C, the salinity was 25–32‰, the pH was 6.4–8.2, the DO was ≥ 4.9 mg/L, the concentration of total ammonia nitrogen (TAN) was maintained between 0.17 and 4.9 mg/L, the concentration of nitrite nitrogen (NO2-N) was between 0.12 and 4.7 mg/L, and the total number of Vibrio bacteria remained between 330 and 9700 cfu/mL. At the end of the experiment, the final average weight of individual shrimp was 13.43 g, and the average yield reached 12.92 kg/m3. The great improvement in growth performance marks a breakthrough in RAS technology of shrimp, and it supports the use of an innovative methodology for the retrofitting and utilization of idle sea cucumber nursery tanks.

scholarly journals GROWTH AND PROTEIN CONTENT OF Ulva prolifera MAINTAINED AT DIFFERENT FLOW RATES IN INTEGRATED AQUACULTURE SYSTEM

2017 ◽  
Vol 9 (2) ◽  
pp. 429-441
Author(s):  
Wastu Ayu Diamahesa ◽  
Toshiro Masumoto ◽  
Dedi Jusadi ◽  
Mia Setiawati
Keyword(s):  
Protein Content ◽  
Flow Rate ◽  
Ammonia Nitrogen ◽  
Ulva Prolifera ◽  
Average Weight ◽  
Flow Rates ◽  
Integrated Aquaculture ◽  
Aquaculture System ◽  
Total Ammonia ◽  
The Impact

Efforts to reduce the impact of waste improvement on degradation of water quality can be transferred by utilization of inorganic waste as a source of seaweed nutrition. This study aimed to determine the growth and protein content of Ulva prolifera maintained at different flow rates in integrated aquaculture system. 9 Yellowtail stocked with 5.095 g with an average weight of 566.11±81.51 g were kept in 540 L tank for 24 days, by water flowing at the rate of 10 L min-1. Water from the fish tank was distributed into the sediment tank and go to 6 Ulva tanks with the flow rate of 0.5, 1.0 and 1.5 L min-1. Test parameters measured were growth performance of Yellowtail, biomass of Ulva prolifera, protein content of Ulva prolifera, and total ammonia nitrogen. The measurement results showed that the biomass of fish increased to 5.408 g, then biomass of Ulva increased to 42 g, 156 g and 155 g for flow rate of 0.5 L, 1 L and 1.5 L min-1, respectively. The protein content of Ulva for all the treatments was the same (P> 0.05). A total of ammonia in the tank outlet of Ulva (0.0202 - 0.1137 mg N L-1) were smaller than those were in the inlet (0.0286 - 0.1394 mg N L-1).

scholarly journals EFFECT OF DYNAMICAL WATER QUALITY ON SHRIMP CULTURE IN THE INTEGRATED MULTITROPIC AQUACULTURE (IMTA)

2015 ◽  
Vol 10 (1) ◽  
pp. 81 ◽  
Author(s):  
Brata Pantjara ◽  
Muhammad Nur Syafaat ◽  
Anang Hari Kristanto
Keyword(s):  
Water Quality ◽  
Organic Matter ◽  
Survival Rate ◽  
Ammonia Nitrogen ◽  
Total Organic Matter ◽  
Red Tilapia ◽  
Total Ammonia Nitrogen ◽  
Tiger Shrimp ◽  
Shrimp Production ◽  
Total Ammonia

One of the technologies to improve the productivity of shrimp farms are environmentally friendly shrimp farming multitrophic integrated system known as Integrated Multitrophic Aquaculture (IMTA). The aims of the study were to observe the water quality dynamic on the integrated multitrophic aquaculture and the effect on the production. This study was used four plots which each of pond had 4,000 m2 in sizing, located in experiment pond, at Research and Development Institute for Coastal Aquaculture, Maros. The main commodities used were tiger and vannamei shrimp. In the A pond was cultivated the tiger shrimp with density 12 ind./m2, in B pond was tiger shrimp with density 8 ind./m2, C pond was vannamei shrimp with density 50 ind./m2, and D pond was vannamei shrimp with density 25 ind./m2. Other commodities were red tilapia (Oreochromis niloticus). Each pond had stocking density 2,400 ind./plot which was divided into 5 hapas having a size of (6 m x 4 m x 1.2 m)/each, mangrove oysters (Crassostrea iredalei and Saccostrea cucullata) with density 7,500 ind./4,000 m2 and seaweed (Gracilaria verrucosa) of 500 kg/4,000 m2. The observation of dynamic water quality in the pond was conducted every day i.e. temperature, dissolved oxygen, salinity, and measured pH, while the total organic matter total (TOM), total ammonia nitrogen (TAN), nitrite, nitrate, phosphate were taken every two weeks. The measurements methods of water quality in laboratory was refered to APHA (2008); and Boyd (1990). During the study, absorption of N and P in seaweed were measured, the obtained plankton was identified and the ratio of carbon and nitrogen during the observation was also calculated. To determine the effect of dominant water quality on production was used the principal component analysis (PCA). The result showed that water quality during the study was suitable for shrimp and red tilapia culture. The dominant water qualities which effected the shrimp production in IMTA system were total ammonia nitrogen (TAN), oxygen, total organic matter (TOM), phosphate, and salinity. The survival rate of the tiger shrimp in intensive pond and semi intensive pond was 50.68% and 59.28% respectively, while the survival rate of the vannamei shrimp in intensive and semi intensive was 71.26% and 68.06% respectively. The highest shrimp production in the cultivation of IMTA reached was 1,488 kg/pond (3,720 kg/ha) in C pond. The lowest feed conversion ratio (FCR) was obtained in the D pond (0.89). The highest production of red tilapia in IMTA reached in C pond (426.65 kg/pond).

scholarly journals PENGARUH PENAMBAHAN MADU PADA PAKAN BUATAN DENGAN DOSIS YANG BERBEDA TERHADAP PERFORMA LAJU PERTUMBUHAN RELATIF, EFISIENSI PEMANFAATAN PAKAN DAN KELULUSHIDUPAN IKAN BANDENG (Chanos chanos)

2018 ◽  
Vol 17 (2) ◽  
Author(s):  
Dini Islamiyah ◽  
Diana Rachmawati ◽  
Titik Susilowati
Keyword(s):  
Growth Rate ◽  
Survival Rate ◽  
Relative Growth Rate ◽  
Feed Utilization ◽  
The Body ◽  
Average Weight ◽  
Fish Feed ◽  
Growing Up ◽  
Chanos Chanos ◽  
Relative Growth

<p align="center"><strong>ABSTRAK</strong></p><p>Kualitas pakan yang baik selain dari kandungan protein, juga berasal dari kandungan mineral yang terdapat di dalamnya. Penambahan madu dalam pakan buatan mampu memberikan kadar mineral yang dibutuhkan tubuh untuk pertumbuhan. Madu mengandung mineral-mineral yang berfungsi untuk pembentukan sel, pengatur kadar air dalam tubuh dan mengandung antioksidan yang dapat berfungsi untuk ketahanan tubuh. Penelitian ini bertujuan untuk mengetahui pengaruh penambahan madu pada pakan buatan terhadap laju pertumbuhan relatif, efisiensi pemanfaatan pakan dan kelulushidupan ikan bandeng (<em>Chanos chanos</em>). Ikan uji yang digunakan dalam penelitian ini adalah ikan bandeng (<em>C. chanos</em>) ukuran nener dengan rata-rata bobot awal sebesar 0.8 – 1.2g dengan jumlah padat tebar 25 ekor/wadah. Frekuensi pemberian pakan dilakukan 3 kali sehari pada pukul 07.00 WIB, 12.00 WIB dan 17.00 WIB sebesar 5% dari bobot biomassa. Penelitian ini dilakukan dengan metode eksperimental menggunakan rancangan acak lengkap (RAL), 4 perlakuan dan 3 kali pengulangan. Perlakuan dalam penelitian ini adalah penambahan madu dengan dosis yang berbeda pada pakan buatan, antara lain: A (0 ml/kg pakan); B (125 ml/kg pakan); C (250 ml/kg pakan) dan D (375 ml/kg pakan). Hasil penelitian menunjukkan bahwa penambahan madu pada pakan buatan memberikan pengaruh nyata (P&lt;0,05) terhadap pertumbuhan bobot mutlak (W), laju pertumbuhan relatif (RGR), efisiensi pemanfaatan pakan (EPP) dan protein efesiensi rasio (PER) serta tidak berpengaruh nyata (P&gt;0,05) terhadap Survival Rate (SR). Perlakuan D (375ml/kg pakan) merupakan perlakuan terbaik yang memberikan nilai tertinggi pada W (249,53±2,75g); RGR (24,55±0,17%/hari); EPP (47,36±0,50%), dan PER (1,81±0,08%). Kualitas air pada media pemeliharaan yang meliputi suhu, DO, pH, amonia dan salinitas tergolong pada kisaran yang sesuai untuk budidaya ikan bandeng (<em>C. chanos</em>).</p><p> </p><p><strong>Kata kunci</strong>:Pakan; Madu; Ikan Bandeng; Dosis</p><p> </p><p align="center"><strong><em>ABSTRACT</em></strong></p><p><em>The quality of the feed is good aside from the content of protein as well as from mineral contained therein. Addition of honey in artificial fish feed could gave some minerals which needed for growing up. Honey contains minerals that served for the establishment of a regulator, cell water content in the body and contains antioxidants that could served for the resilience of the body. This research aims to know the effect of the addition of honey in the feeding -made against relative growth rate, efficiency of feed utilization and the survival rate of milkfish (</em>Chanos chanos<em>). The fish used in this research is the milkfish (</em>C. chanos<em>) in size with an average weight of 0.8 – 1.2 g to the amount of dense stocking 25-ind /cages. Frequency of feeding was done in 3 times a day at 7:00 PM GMT, 12:00 PM GMT and 17:00 PM GMT amounting to 5% of the weight of biomass. This research was conducted with the experimental method using random design complete (RAL), with the 4 treatments and repetition as much as 3 times. The treatments in this study is the addition of honey with different doses in artificial feed such as  A (0 ml/kg of feed); B (125 ml/kg of feed); C (250 ml/kg of feed) and D (375 ml/kg of feed). The results showed that the addition of honey in artificial feed has significant (P &lt; 0.05) in absolutally weight (W), relative growth rate (RGR), efficiency of feed utilization (EPP) and protein effeciency ratio (PER) and has no significant (P &gt; 0.05) for survival rate (SR).  The treatment D is the best once which has gave the highest value on the W (249,53 ± 2,75 g); RGR (24,55 ± 0,17 %/day); EPP (47,36±0,50%), and PER (1.81±0.08%). Water quality maintenance of media such as temperature, DO, pH, salinity and ammonia have in range that is suitable for the cultivation of milkfish (</em>C. chanos<em>).</em><em></em></p><p><em> </em></p><p><strong><em>Keywords</em></strong><em>: Feed, Honey, Milkfish, Doses</em></p>

scholarly journals Pengaruh penurunan salinitas terhadap laju konsumsi oksigen dan pertumbuhan ikan kerapu lumpur (Epinephelus tauvina)

2015 ◽  
Vol 2 (2) ◽  
pp. 114
Author(s):  
Munawar Khalil ◽  
Ainol Mardhiah ◽  
Rachmawaty Rusydi
Keyword(s):  
Oxygen Consumption ◽  
Weight Gain ◽  
Survival Rate ◽  
Oxygen Consumption Rate ◽  
Consumption Rate ◽  
Randomized Design ◽  
Salinity Reduction ◽  
Rate Of Oxygen Consumption ◽  
Gain Length ◽  
Completely Randomized Design

Penelitian ini bertujuan untuk mengetahui pengaruh penurunan salinitas terhadap laju konsumsi oksigen dan pertumbuhan ikan kerapu lumpur (E. tauvina). Penelitian ini dilaksanakan pada tanggal 22 April sampai 22 Mei 2015 di Laboratorium Hatchery dan Teknologi Perikanan Program Studi Budidaya Perairan Fakultas Pertanian Universitas Malikussaleh. Rancangan penelitian yang digunakan adalah Rancangan Acak Lengkap (RAL) dengan lima perlakuan tiga ulangan dan dilanjutkan dengan Tukey jika terdapat perbedaan. Perlakuan yang diberikan yaitu : perlakuan A (27 ppt), B (24 ppt), C (21 ppt), D (18 ppt) dan E (15 ppt). Parameter yang diamati adalah laju konsumsi oksigen, pertambahan bobot, pertambahan panjang dan kelangsungan hidup. Hasil penelitian menunjukkan bahwa konsumsi oksigen tertinggi terdapat pada pelakuan  E (15 ppt) yaitu 0,987±0,085 mgO2/gr/jam dan terendah pada perlakuan A (27 ppt) yaitu 0,612±0,033 mgO2/gr/jam. Pertambahan bobot, panjang dan kelangsungan hidup tertinggi terdapat pada perlakuan B (24 ppt) yaitu masing-masing sebesar 1,231±0,153 gram, 0,970±0,083 cm dan 90,476 %. Selama penelitian ini suhu bekisar antara 26,9 – 29 oC, pH 6,8 – 8,2 dan DO 6,8 – 8,1 mg/ L.The purpose of this study was to determine the effect of salinity reduction in the rate of oxygen consumption and growth grouper (E. tauvina). The research was conducted on April 22 to May 22, 2015. The research was conducted at the Laboratory of Aquatic Hatchery and Technology, Department of Aquaculture Faculty of Agriculture, University Malikussaleh. The study design used was completely randomized design (CRD) with three replication and five treatments followed by Tukey if there is a difference. The treatments were as follow: treatment A (27 ppt), B (24 ppt), C (21 ppt), D (18 ppt) and E (15 ppt). Parameters measured were oxygen consumption rate, weight gain, length and survival rate. The results showed that oxygen consumption is highest in the carrying out of  E (15 ppt) is 0,987±0,085 mgO2/gr/h and the lowest in treatment A (27 ppt) is 0,612±0,033 mgO2/gr/h. Weight gain, length and survival rate is highest in treatment B (24 ppt) are respectively 1,231±0,153 gr, 0,970±0,083 cm and 90,476 %. During this study the temperature ranged between 26,9 – 29 oC, pH 6,8–8,2 and DO 6,8–8,1 mg/L.

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