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Dony Prasetyo
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INDONESIA
Indonesian Journal of Tropical Aquatic
Published by Universitas Muhammadiyah Malang
ISSN : -     EISSN : 26224836     DOI : -
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Indonesian Journal of Tropical Aquatic (IJOTA) is open access publishes papers two times a year in February and Augst. IJOTA will publish the research results useful for the sustainability of fisheries. IJOTA is a scientific journal that discusses the results of research in science, technology, marine and freshwater fisheries that have not been published. Articles should be created in a language that is easily understood by non-specialist readers in the topic of the article itself, but interested in research. This scientific article includes the results of research on Aquaculture (Fish Nutrition, Fish Health and Diseases, Water Quality, Fish Genetics Improvement and Breeding, Fisheries Engineering and Biotechnology), Aquarium Sciences, Aquatic Ecology (Marine, Brackish, Freshwater), Conservation of Aquatic Resources and also Coastal Management. A journal script should be written in English.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Perairan
Articles 73 Documents
 1   2   3   4   5 
MEAT BONE MEAL (MBM) AND POLTRY BY-PRODUCT (PBM) TEST ON GRANULE TOWARDS THE GROWTH AND SURVIVAL RATE OF EEL (Anguilla Bicolor) Stadia ELVER Triana Indri Astuti; Hany Handajani; Riza Rahman Hakim
IJOTA (Indonesian Journal of Tropical Aquatic) Vol. 1 No. 1 (2018): August
Publisher : Universitas Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/ijota.v1i1.5855

Abstract

This research was conducted at Hatchery Fishery Laboratory in University of Muhammadiyah Malang on February 15 - March 17, 2018. The purpose of this research was to identify the meat bone meal (MBM) and poltry by-product (PBM) test on granule and the best treatment to the growth and survival rate of Eel (Anguilla bicolor) stadia elver. The method used was experiemental by Completely Randomized Design (RAL) with 3 different treatments on granule composition, P1 (Commercial Granule), P2 (70% Commercial Granule  and 30% MBM), P3 (70% Commercial Granule and 30% PBM), and each treatment done repeatedly three times. Furthermore, the data were analyzed by ANAVA and continued with BNT test. The results of this study indicated that the meat bone meal (MBM) and poltry by-product (PBM) test on granule had a significant effect on the absolute growth rate, a very significant effect on DGR, and not significantly different on Eel. The absolute best growth rate was on P2 2.24 ± 0.71. The best DGR was on P1 (5.55 ± 0.33). Based on the research results, it was concluded that feeding the granule based on meat bone meal increased the growth and survival rate, and also could be the substitution granule for Eel ( Anguilla bicolor). Keywords: Anguilla bicolor, MBM, PBM, Growth
The Effect of Combination of Tubifex sp and Artificial Feed on the Growth and Molting of Giant Shrimp (Macrobrachium Rosenbergii) Stadia V. Dianita Wijayanti; Ganjar Adhywirawan Sutarjo; Riza Rahman Hakim
IJOTA (Indonesian Journal of Tropical Aquatic) Vol. 3 No. 1 (2020): February
Publisher : Universitas Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/ijota.v3i1.5879

Abstract

Giant Prawns (Macrobrachium rosenbergii) or freshwater prawn is also one of the crustaceans, which has the largest size compared to other freshwater prawns, in addition to giant prawns have a high economic value. The obstacle to the giant prawn's cultivation is determining the combination of natural and artificial feeding for giant prawns to improve molting quickly and increasing the growth of giant prawns. The method used was the experimental method, Completely Randomized Design (RAL) with five treatments: P1 (100 % Pellet), P2 (25 % Tubifex + 75 % Pellet), P3 (75 % Tubifex + 25 % Pellet), P5 (100 % Tubifex) and 3 replications. The data were analyzed using diversity analysis (ANOVA), and if there were differences it could be continued with the BNT test. The results showed that The Influence of Tubifex sp and Natural Feeding Percentage And Artificial Feeding On Moulting Acceleration And Growing Giant Prawns/Crawfish (Macrobrachium Rosenbergii) Stadia V greatly influenced the molting of giant prawns. The water quality during the study ranged from 23˚C-29˚C, dissolved oxygen 3,6-8,7 mg/l, and pH ranged from 7.3 to 8.9. The conclusions from the 30-days of study obtained the highest results for molting on the second treatment (P2) was 0.43, while the fourth treatment (P4) was the best combination in weight growth with a value 6390,42 mg, and long growth showed that the fourth treatment (P4) also gave the highest result which is 406.75 mg.
EFFECTIVENESS OF COMBINATION OF FEED FORM CAKE AND FEED NATURAL SILK WORMS (TUBIFEX SP) ON FEED CONVERSION RATIO (FCR), SPECIFIC GROWTH RATE AND GIANT FRESHWATER PRAWN SURVIVAL (MACROBACIUM ROSENBERGII) LARVAL STAGE Ganjar Adhywirawan Sutarjo
IJOTA (Indonesian Journal of Tropical Aquatic) Vol. 1 No. 1 (2018): August
Publisher : Universitas Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/ijota.v1i1.5938

Abstract

This study aimed to determine the effectiveness of the combination of cake feed and silk worm feed on feed coneration ratio (FCR), Survival, and specific growth rate (SGR) of prawn larvae (Macrobacium rosenbergii). The research was conducted on 8 February - 9 March 2018 at the Fisheries Laboratory of University of Muhammadiyah Malang. Shrimp used in this study is larval prawns stadia larvae. This research was conducted by experimental method using randomized block design (RAL) with 5 treatments and 4 replications. P1 100% silk worm and 0% cake feed, P2 25% silk worm and 75% cake form feed, P3 50% silk worm and 50% cake form feed, P4 75% silk worm and 25% cake feed, P5 100 % feed cake form. Feed is given in ad-station for 40 days. Observed data include Feed coneration ratio (FCR), Survival, specific growth rate (SGR), and water quality. The results showed that the combination of cake feed and silk worm feed had a significant effect on the growth rate of Specific (SGR) Fcount 7.58> from F. Table 5% (3.06) 1% (4.89), While no effect For Figures F count 0.90 <of F. Table 5% (3.06) 1% (4.89) and Feed Converation Ratio as F count 2.23 <of F. Table 5% (3.06) 1 % (4.89). Water quality on maintenance media against a reasonable range for shrimp cultivation. Keywords: fish cake, silk worm, giant freshwater prawn, growth
Effect of differences in stocking density in round tarpaulin ponds on growth and survival of Osphronemus gourami Yudhistyan Hanif Rahmawan; Riza Rahman Hakim; Ganjar Adhywirawan Sutarjo
IJOTA (Indonesian Journal of Tropical Aquatic) Vol. 3 No. 1 (2020): February
Publisher : Universitas Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/ijota.v3i1.5973

Abstract

One way to increase cultivation productivity is by increasing stocking. Gouramy is a freshwater commodity that has a fairly slow growth performance. This study aims to determine the growth performance of gouramy reared at different stocking densities. The 3 cm gourami are reared in a pond containing 35 liters of water. ponds P1 (30 heads), P2 (50 heads), P3 (100 heads), P4 (150 heads), P5 (200 heads) each was repeated 3 times. Growth rate (GR), specific growth rate (SGR), survival rate (SR), and feed conversion ratio (FCR) were measured and analyzed for variance (ANOVA) followed by LSD. The results showed that the fish reared in pond P1 showed the best GR, SGR, FCR, and SR (3.8 g, 3.99 %, 96 %, and 1.11 respectively). The lower the density, the better the growth performance but based on efficiency and productivity the best is at P2.
EFFECTIVENESS OF CHERRY LEAF EXTRACT (Muntingia calabura) WITH DIFFERENT LEVELS AS TREATMENT OF SEEDS OF SANGKURIANG CATFISH (Clarias gariepinus) INFECTED BY Trichodina sp Moh. Nurhuda; Marry Ann Kholista; Yuliani Ismi; Nurfitri Maulidiya; Hariyadi Hariyadi; Riza Rahman Hakim
IJOTA (Indonesian Journal of Tropical Aquatic) Vol. 1 No. 1 (2018): August
Publisher : Universitas Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/ijota.v1i1.5980

Abstract

Sangkuriang catfish (Clarias gariepinus) is a leading commodity of Indonesian freshwater fishery. Production continues to increase in 2016 reached 22%. cultivators experience constraints on seeding and enlargement due to ectoparasites Trichodina sp. this parasite attacks the outer part of the body marked by the spots on the body. Prevention and treatment of many usses of chemicals that can adversely affect the human body and environtment, so it takes another alternative to replace these chemicals that can adversely affect the human body and environment, so it takes another alternative to replace these chemicals. Cherry Leaf contain compounds Flavonoid, Tannin, Triterpenoid, Saponin and Polifenol as antioxidants, Cherry Leaf useful as an antibacterial. The method used in this research is the experimental method and using Completely Randomized Design (RAL). Concentrations of cherry leaf extract (Muntingia calabura) given include 1%, 2%, 3%, 4% and 5% there were 5 treatments and 4 replications. The data obtained were analyzed by ANAVA method (variance analysis) followed by LSD test. The results showed that the use of cherry leaf extract (Muntingia calabura) in treating Trichodina sp parasite has a very real effect with the best value on the presentation of Leukocrit is 2% concentration that produces Leukocrit percentage of 2.68% and percentage of Hematocrit 2% with Hematocrit yield of 11.83%. The clinical symptoms are white spots in all body, pale color, decreased appetite of the mucus that comes out, often rubbing the body to the wall. The result of water quality measurement shows temperature: 24 - 27,2oC, DO: 4,1 - 6,9 and pH: 6 - 8.KEY WORDS: Muntingia calabura, Trichodiniasis, Sangkuriang Catfish, Leukocrit, Hematocrit.
Masculinization of Rainbow Fish (Melanotaenia boesemani) through immersion the larvae with extract of Bee Honey Resin as a natural substance with different doses Ahmad Rusyda Hafidhi Albasa; Riza Rahman Hakim; Budi Setyono
IJOTA (Indonesian Journal of Tropical Aquatic) Vol. 2 No. 1 (2019): February
Publisher : Universitas Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/ijota.v2i1.6047

Abstract

Abstract. The development of export power ornamental fish offers the potential for ornamental fish the production of Indonesia to global force including the Melanotaenia Boesemani. The difference in value having an economy where a male fish have an economic value higher than the female fish. Based on it, this study aimed to examine the monosex productivity male by the masculinization using natural honey bee resin. Methods used to research this is the method with 4 RAL (0,5 ppm, 1 ppm, 1,5 ppm, and 2 ppm). Data analyzed using analysis (ANOVA) diversity if there is the nature of the treatment and continued with the BNT % 5. The results of the study showed that the bee resin (Propolis) could increase masculinized effect of M.boesemani with average to the percentage male in treatment A 43,92%, B 62,74%, C 50,28%, and D 59,49%, while treatment control of 52,80%. In addition also used the measurement of parameter supporting namely survival rate (SR) with the average treatment A 57,78%, B 44,44%, C 44,44%, D 35,56%, and control of 57,78%. To growth rate (GR) have result treatment A 0,0203g, B 0,0208g, C 0,0215g, D 0,024g, while for control of 0,210g. The quality of water includes the value of doing to the morning ranged from 5,38-8,43 ppm and by day ranged from 5.12-7,67 ppm, while for ph in the morning range 6.5-7.8 and by day ranged from 6.1 a total of 7.3. Based on the research can conclude that Masculinization of M. Boesemani by immersion larvae used honey bee resin (Propolis) with different doses impact against the effects of masculine M.Boesemani best at doses of 1 ppm with percentage 62,74 %.
EVALUATION FEASIBILITY AND BUSINESS DEVELOPMENT STRATEGY ENLARGEMENT WHITE SHRIMP (Litopenaeus Vannamei) AT DUKUHTUNGGAL VILLAGE GLAGAH SUB DISTRICT LAMONGAN Ika Maulana Lutfi; David Hermawan; Anis Zubaidah
IJOTA (Indonesian Journal of Tropical Aquatic) Vol. 1 No. 1 (2018): August
Publisher : Universitas Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/ijota.v1i1.6077

Abstract

This research aims to analyze the financial feasibility and formulating business development strategies enlargement of White shrimp at Dukuhtunggal Village Sub district Glagah Lamongan. The research using survey method. The sampling method used snowball sampling by the number of respondents as many as 18 people. The result showed that the business of enlarging white shrimp enlargement enterprise development deserves to be implemented and developed, because of the results of the assessment in accordance with the investment criteria Net Present Value (NPV) reached Rp 283.927.334, Net Benefit Cost Ratio (Net/B/C) by 28, Internal Rate of Return (IRR) reached 645.5%, the value of payback period  of 0.37 or three months of seven days and the Profitability index (PI) of 1.53. Business development strategy is known through proceeds from the matrix IFE and EFE with a total score of 3.341 and 3.272. Matrix IE shows the position of the company located on the cell to one which means grow and build so that the appropriate strategy to be applied is the intensive strategy i.e., market penetration, market development, product development and integration strategies. The formulation of the strategy produces eight alternative development strategies i.e., an increase in production capacity, strengthening the institutional role, leveraging capital access, empowerment of farmers, increase the use of quality seeds, weaves cooperation with suppliers, maintaining the condition of the infrastructure, and improve the implementation and monitoring of standard operational procedures. Keywords: Litopenaeus vannamei, feasibility, strategy enlargement
Effectiveness of Strychnos ligustrina Bl. Extract as Feed Supplementation to Increase Immune System of Nile Tilapia (Oreochromis niloticus) wich againts Streptococcus agalactiae Anis Zubaidah; Kuny Riski Faidah; Sri Samsundari
IJOTA (Indonesian Journal of Tropical Aquatic) Vol. 1 No. 1 (2018): August
Publisher : Universitas Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/ijota.v1i1.6082

Abstract

One of the problems of intensive cultivation of tilapia is the attack of Streptococcosis disease caused by Streptococcus agalactiae bacteria. To prevent it is necessary to prevent the use of natural antibiotics that is Strychnine bush extract. The method used in this research is the experimental method using Completely Randomized Design (RAL), then the data is analyzed by using ANAVA. In this research, there were five treatments with various dosages, namely treatment (K: 0%), (A: 5%), (B: 10%), (C: 15%) and (D: 20%), each treatment was repeated four times. The main parameters used are hematocrit level, leukocrit level, leukocyte count and phagocytosis activity. As a supporting parameter is water quality and MIC (Minimum Inhibitation Concentration) test. The results showed that dosage of Strychnine bush extract did not affect the level of hematocrit and leukocrit level, but significant effect on leukocyte count with the highest value at treatment B with 10% dose is 11,9 × 105 cell / mm3. Giving extract also significant effect on phagocytosis activity with the highest phagocytosis value at treatment B with dose of 10% that is 32%.Keywords: Imune system, Streptococcosis, antibiotics, Minimum Inhibitation Concentration
Effect of periodic fasting on growth and feed efficiency in Giant Freshwater Prawn (Macrobrachium rosenbergii, de Man 1879) Waskito Dwi Utomo; Riza Rahman Hakim; Ganjar Adhywirawan Sutarjo
IJOTA (Indonesian Journal of Tropical Aquatic) Vol. 2 No. 2 (2019): August
Publisher : Universitas Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/ijota.v2i2.6679

Abstract

There are obstacles in the aquaculture business that is still often facedbyfarmers, one of the challengesisthe high price of commercial feed. Feed as an energy source for growth is a reasonably high-cost component in production that reaches 40-89 %. In the control of food for efficiency, it could be done by the fasting method. This research was aimedtoanalyze the effect of periodic fastedofgiant prawn (Macrobrachium rosenbergii de Man, 1879) against growth and feed efficiency. This research was conducted at IBAP Installation, Probolinggo District - East Java Province. The experimental method used completely randomized design with five treatments and three replications, such as; P0: feeding without fasting (as control), P1: a-day fasted, a-day feeding, P2: a-day fasted, two-days feeding, P3: a-day fasted, three-day feeding, P4: a-day fasted, four-days feeding, P5: a-day fasted, five-day feeding. The results showed that periodic fasted of M. rosenbergii no significant effect on the daily growth rate, absolute weight growth, and feed efficiency. However, by looking at the rate of growth, thisfasting methodcouldbe used as an alternative to saving feed. The P5 showed the most effective in increasing daily growth rate, absolute weight growth, and effectiveness of giant prawn feeding. The strategy of periodic fasted to increase the production of giant prawns should consider the other supporting factors such as ideal water quality (pH, temperature, and DO), proper stocking density, and feeding periods on schedule.
The influence of difference temperature against the rate of embryonic development and larval abnormality of Cantik Grouper (Epinephelus sp.) Aprisianus Julkarman Simbolon; Ganjar Adhywirawan Sutarjo; Hariyadi Hariyadi
IJOTA (Indonesian Journal of Tropical Aquatic) Vol. 2 No. 1 (2019): February
Publisher : Universitas Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/ijota.v2i1.6858

Abstract

Cantikgrouper is the hybridization results grouper or cross-breeding between Epinephelus fuscoguttatus as a female and Epinephelus microdon as a male. The main barriers faced in the development of this commodity is still low levels of spawning up to seeding grouper. Based on the background, this study aimed to investigate optimum temperature observations against the rate of embryonic development Epinephelus sp.larvae. This study used the results of artificial spawning eggs.The fertilized eggs were incubated on six pieces of the container temperature treatment;each treatment there was repeated three times.The incubation temperature was kept on (A) 21-22°C; (B) 23-24°C; (C) 25-26°C; (D) 27-28°C; (E) 29-30°C; (F) 31-32°C. Results showed that eggswere incubated at a temperature of 21-22 ℃ embryonic development to a halt in the blastula, and temperature 23-24°C stalled on phasemyomere embryos. The low-temperature incubation period lasts a long time. Temperature 25-26°C needed 18 hours 6 minutes by 8.33% abnormality rate. Temperature 27-28°C needed 16 hours to hatch witha degree of abnormality of 7.6%. Temperature 29-30°C needed 15 hours 1 minute for the hatch tothe degree of abnormality of 5.33%. The 31-32°C temperature needed 14 hours 6 minutes to hatch witha degree of abnormality of 17.3%. The limits of tolerance for the incubation of the eggs ofcantik grouper (Epinephelusspp.) were 26-32°C.The best temperature of each treatment were obtained at a temperature of 29-30°C. Based on our results, it concluded that the changing temperature affected how long eggs could hatch.

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