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All Journal JURNAL VOKASI ILMU-ILMU PERIKANAN (JVIP) Jurnal Aquatik Journal of Microbiology, Biotechnology and Conservation
Ridwan Tobuku
Program Studi Budifaya Perairan, Fakultas Peternakan Kelautan Dan Perikanan, Universitas Nusa Cendana
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Environmental Science Immunology & microbiology

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Pengaruh Penambahan Sargassum sp. pada Pakan Terhadap Kecerahan Warna Ikan Cupang (Betta sp.) Leony Aplonia Vianney Rubu; Agnette Tjendanawangi; Ridwan Tobuku
Jurnal Aquatik Vol 9 No 1 (2026): Edisi Maret 2026
Publisher : Nusa Cendana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/jaqu.v9i1.30003

Abstract

This study was conducted to evaluate the effect of incorporating Sargassum sp. flour into feed on the color enhancement, absolute growth, and survival rate of Betta sp.. The experiment lasted for 60 days and employed a Completely Randomized Design (CRD) consisting of four treatments: a control group (without Sargassum sp. supplementation), treatment A (10%), treatment B (20%), and treatment C (30%), with each treatment replicated three times. The observed parameters included color brightness, absolute growth, survival rate, and water quality. The findings revealed that the inclusion of Sargassum sp. flour significantly influenced (P < 0.05) both color brightness and absolute growth of Betta fish. The most effective treatment was recorded at the 20% supplementation level, producing the highest color brightness score of 4.50 ± 0.10, indicating a very high level of pigmentation. In addition, the survival rate across all treatments remained at 100%, demonstrating that the use of Sargassum sp. flour is safe at inclusion levels of up to 30%. Therefore, the incorporation of 20% Sargassum sp. flour in feed can be considered an effective strategy to enhance the color quality of Betta fish without negatively affecting their survival. Keywords: Absolute growth, betta fish (Betta sp.), color brightness, feed formulation, Sargassum sp., survival rate
Analisis Komparatif Kinerja Ekonomi Usaha Budidaya Rumput Laut Kappaphycus alvarezii di Desa Tablolong dan Desa Oenaek, Kabupaten Kupang, Nusa Tenggara Timur Jeli Boboi; Priyo Santoso; Ridwan Tobuku
Jurnal Aquatik Vol 9 No 1 (2026): Edisi Maret 2026
Publisher : Nusa Cendana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/jaqu.v9i1.30005

Abstract

This study aimed to analyze the economic performance of Kappaphycus alvarezii seaweed farming in Tablolong Village and Oenaek Village, Kupang Regency, East Nusa Tenggara, Indonesia. Kappaphycus alvarezii has significant economic potential, particularly in the export market, due to its high carrageenan content. The study employed a quantitative approach using a descriptive and comparative research design. Data were collected through interviews, field observations, and structured questionnaires administered to seaweed farmers in both villages. The results showed that although Tablolong Village generated slightly higher gross revenue, Oenaek Village demonstrated greater production efficiency. These differences were influenced by several factors, including seed quality, cultivation techniques, market accessibility, and natural resource management. The findings provide valuable insights for policymakers and stakeholders in developing strategies to improve the economic performance and livelihoods of seaweed farmers in both villages. Keywords: Kappaphycus alvarezii; seaweed farming; economic analysis; production efficiency; Tablolong Village; Oenaek Village.
Penggunaan Fermentasi Daun Pepaya (Carica Papaya), Kunyit (Curcuma Domestica Val.), dan Garam (Nacl) dalam Menunjang Pertumbuhan dan Kelangsungan Hidup Ikan Lele pada Budidaya Ikan dalam Ember (Budikdamber) Maria Menciana Moniz; Yuliana Salosso; Ridwan Tobuku
Jurnal Aquatik Vol 9 No 1 (2026): Edisi Maret 2026
Publisher : Nusa Cendana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/jaqu.v9i1.30016

Abstract

The Bucket Fish Farming System (Budikdamber) has emerged as a practical and environmentally sustainable aquaculture method for small-scale fish production. Nevertheless, its productivity largely depends on efficient feed utilization and maintaining fish health. Fermented mixtures prepared from papaya leaves, turmeric, and salt have attracted attention as natural feed supplements that may enhance fish growth performance. This study evaluated the effects of fermented papaya leaves, turmeric, and salt on the growth performance, feed utilization efficiency, survival rate, and water quality of African catfish (Clarias gariepinus) cultured in a Budikdamber system. A one-month experiment was conducted using a Completely Randomized Design consisting of three treatments with three replicates: a control without fermented supplementation, supplementation with 4 mL of fermented solution, and supplementation with 40 mL of fermented solution. Growth performance was assessed through absolute length gain and absolute weight gain, while feed conversion ratio, survival rate, and water quality were also evaluated. The results demonstrated that fermented supplementation significantly improved fish growth and feed utilization. The application of 40 mL fermentation produced the highest absolute length gain (11.53 ± 0.31 cm) and absolute weight gain (127.35 ± 4.49 g), together with the lowest feed conversion ratio (1.30 ± 0.49), indicating superior feed efficiency. Survival remained consistently high across all treatments (98.33–100%), and the measured water quality parameters stayed within the acceptable range for African catfish culture. These findings suggest that supplementation with 40 mL of fermented papaya leaves, turmeric, and salt is an effective approach to improving growth performance and feed utilization efficiency in African catfish reared under the Budikdamber culture system. Keywords: African catfish, Budikdamber, feed conversion ratio, fermented papaya leaves, growth performance, turmeric.
OPTIMALISASI PENAMBAHAN PROBIOTIK PROBIO-7 DENGAN KONSENTRASI YANG BERBEDA PADA PAKAN TERHADAP PERTUMBUHAN BENIH IKAN MAS (Cyprinus carpio) Hesti Eunike Bau; Ridwan Tobuku; Jusuf R Manilapai
Jurnal Aquatik Vol 9 No 1 (2026): Edisi Maret 2026
Publisher : Nusa Cendana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/jaqu.v9i1.30065

Abstract

Aquaculture is the main basis for meeting animal protein needs through maximum productivity targets. The success of this sector is highly dependent on the synergy between feed management, water quality control, maintenance techniques, and the sustainability of quality seed supply. Fish growth and survival are highly dependent on the availability of high-quality feed, especially during the seed phase which requires a large protein intake. This research was conducted for 2 months at the oeluan fish seed center using an experimental method with a completely randomized design of 5 treatments and 3 replications: Control Treatment (without the addition of probio-7), Treatment A (addition of 10 ml probio-7/kg feed), Treatment B (addition of 15 ml probio-7/kg feed), Treatment C (addition of 20 ml probio-7/kg feed), Treatment D (addition of 25 ml probio-7/kg feed). The results of the study showed that the best absolute growth was in treatment D (addition of 25 ml probio-7/kg feed) with a value of (7.19 ± 0.39 gr) with a survival rate of 100% in each treatment. Keywods: Probio-7, Survival, Growth, Water Quality.
Pengaruh Padat Tebar Terhadap Pertumbuhan Ikan Nila (Oreochromis niloticus) Pada Sistem Akuaponik Teknik Aliran Film Nutrisi (NFT) Margareth Yuni Wati Ragho; Ridwan Tobuku; Asriati Djonu
Jurnal Aquatik Vol 9 No 1 (2026): Edisi Maret 2026
Publisher : Nusa Cendana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/jaqu.v9i1.30067

Abstract

This study aims to determine the effect of stocking density on the growth of tilapia (Oreochromis niloticus) cultivated in an aquaponic system using the Nutrient Film Flow (NFT) technique. The study was carried out with four different stocking densities, namely 15, 20, 25, and 30 fish per unit of aquaponic system. The method used was an experiment with a Complete Random Design (RAL) design consisting of 3 replicas. The data obtained was analyzed using multiple fingerprint analysis (ANOVA) with a 95% confidence interval. The results showed that stocking density had a significant effect on tilapia growth, where treatment with a stocking density of 15 fish showed the best growth, followed by treatment of 20 fish, while higher stocking density (25 and 30 fish) reduced the growth rate of fish. In conclusion, the optimal stocking density for tilapia growth in an NFT aquaponics system is 15 to 20 fish per unit of the system. This study provides recommendations for tilapia farmers in aquaponic systems in order to be able to manage stocking density properly to support optimal growth. Keywords: Stocking density, Tilapia, Aquaponics, Nutrient Film Flow (NFT) Technique, Fish growth.
Effect of Feeding Frequency of Ulva lactuca-Supplemented Diet on Growth Performance and Feed Efficiency of Nile Tilapia (Oreochromis niloticus) Chrisna Gidalti Upu; Ridwan Tobuku; Immaria Fransira
Journal of Microbiology, Biotechnology and Conservation Vol. 2 No. 2 (2026): Journal of Microbiology, Biotechnology and Conservation (jMBC)
Publisher : Master’s Program in Biology, Faculty of Mathematics and Natural Sciences, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/tabhb544

Abstract

This study aimed to evaluate the effect of feeding frequency of a diet supplemented with 12% Ulva lactuca meal on the growth performance, feed efficiency, and survival rate of Nile tilapia (Oreochromis niloticus). The experiment was conducted for 60 days at the Noekele Fish Hatchery Center, Kupang Regency, Indonesia. A Completely Randomized Design (CRD) was employed with three feeding frequency treatments and three replicates: P1 (feeding twice daily), P2 (feeding three times daily), and P3 (feeding four times daily). Parameters observed included weight gain, specific growth rate (SGR), feed efficiency, survival rate, and water quality. Data were analyzed using one-way analysis of variance (ANOVA) followed by the Least Significant Difference (LSD) test at a 95% confidence level. The results showed that feeding frequency significantly affected growth performance, feed efficiency, and survival rate of Nile tilapia (P<0.05). The highest performance was obtained in treatment P3, with a weight gain of 7.72 ± 0.77 g, specific growth rate of 2.41 ± 0.15% day⁻¹, feed efficiency of 76.66 ± 5.58%, and survival rate of 100%. These values were significantly higher than those observed in P1 and P2. Increased feeding frequency likely improved nutrient availability and utilization, resulting in enhanced growth and feed conversion efficiency. Water quality parameters remained within the optimal range for Nile tilapia culture, with temperatures of 26–30°C and pH values of 7.0–8.5 throughout the study. In conclusion, feeding Nile tilapia with a diet containing 12% Ulva lactuca meal four times per day is the optimal feeding frequency to improve growth performance, feed efficiency, and survival rate
Co-Authors Agnette Tjendanawangi Antonius Klau Asriati Djonu Betrisia Geliana Angul Chrisna Gidalti Upu Christmas Day Leni Simanjuntak Filomena Da Conceicao Gadis Glorya Valentina Olang Hesti Eunike Bau Immaria Fransira Jeli Boboi Jusuf R Manilapai Leony Aplonia Vianney Rubu Marcelien Dj Ratoe Oedjoe Margareth Yuni Wati Ragho maria menciana moniz Nicodemus Dahoklory Priyo Santoso Windya Ynryani Boimau Yecika Agustina Bani Yoseph Ch. I Meni Yuliana Salosso Yulianus Linggi Yulianus Seran