EFFECTIVENESS OF DIETARY SYNBIOTICS FOR CONTROLLING Aeromonas hydrophila AND Pseudomonas sp. INFECTIONS IN PATIN (Pangasianodon hypophthalmus)

2026-08-06T16:26:07+08:00

ANALYSIS OF CONSUMER CHOICE OF PROCESSED FISHERY PRODUCTS IN BALONGPANGGANG VILLAGE, GRESIK REGENCY, EAST JAVA.

2026-08-06T16:24:43+08:00

Gresik Regency has great fishery potential, yet its utilization through processed products remains suboptimal, necessitating a deep understanding of consumer preferences as a foundation for developing marketing strategies. This study aims to analyze consumer preferences for processed fishery products in Balongpanggang Subdistrict through mapping the importance and performance levels of product attributes and the influence of demographic characteristics on preferences. The research employed a descriptive quantitative approach with a survey method involving 105 respondents selected through accidental sampling. Data were collected using Likert scale questionnaires and analyzed using Importance-Performance Analysis (IPA), Kruskal-Wallis test, and Spearman's Rank Correlation test. The results showed that taste and trust attributes are the main strengths that must be maintained, while price is the top priority for improvement. Demographic characteristics have limited influence, where age significantly affects the taste attribute (p=0.044) and education significantly affects the packaging attribute (p=0.026), while income and consumption frequency have no significant effect. This study recommends differentiated marketing strategies including improving price perception, taste innovation for the productive age group, and enhancing packaging quality with complete product information.

RELATIONSHIP BETWEEN THE N/P RATIO AND PLANKTON COMPOSITION AND ABUNDANCE IN INTENSIVE PACIFIC WHITE SHRIMP (Litopenaeus vannamei) CULTURE AT PT TANJUNGBUMI AKUAKULTUR BANGKALAN EAST JAVA

2026-08-06T15:30:47+08:00

CHARACTERIZATION OF INDICATOR BACTERIAL COMMUNITIES IN SHRIMP PONDS FOR EVALUATING THE HEALTH OF CULTURE MEDIA

2026-08-03T20:30:08+08:00

EFFECT OF LIQUID SMOKE CONCENTRATION AND IMMERSION DURATION ON PROXIMATE AND SENSORY CHARACTERISTICS OF SMOKED CATFISH (Clarias sp.)

2026-08-05T18:14:12+08:00

Smoked catfish is a widely consumed fish product; however, conventional smoking using direct combustion of wood or coconut shells is associated with prolonged processing, inconsistent product quality, and the potential formation of carcinogenic compounds. Liquid smoke offers a practical alternative that can provide more uniform flavor while reducing the formation of polycyclic aromatic hydrocarbons (PAHs). This study evaluated the effects of liquid smoke concentration and soaking duration on the proximate composition and sensory acceptance of smoked catfish and assessed product compliance with the Indonesian National Standard (SNI) 2725:2013. The experiment was conducted at the Laboratory of the Freshwater Aquaculture Study Program, Rejang Lebong State Community Academy, using a factorial Completely Randomized Design with two factors: liquid smoke concentration and soaking duration. Each treatment was replicated twice, with commercially smoked catfish serving as the control. Sensory evaluation was performed by 20 semi-trained panelists based on appearance, odor, taste, and texture. Data were analyzed using one-way ANOVA followed by Duncan’s Multiple Range Test at a 5% significance level. The results indicated that the treatments significantly affected appearance, odor, and taste. The combination of 5% liquid smoke and 10-minute soaking produced the highest sensory scores across all parameters and the highest protein content. All samples met the SNI moisture requirement, whereas three samples treated with 10% liquid smoke exceeded the 20% fat limit. Thus, 5% liquid smoke with 10-minute soaking is recommended as the optimal treatment.

MORPHOMETRIC STUDY OF FISH CAUGHT IN POCKET DRAG NETS (JTB) OF FISHERMEN AT TPI NUSANTARA BRONDONG FISHERY HARBOR, LAMONGAN

2026-08-05T18:10:53+08:00

Brondong Nusantara Fishing Port (NFP) is a type B port located in Indonesia. Brondong NFP, with its adequate facilities, has become the economic center for the fishing community engaged in fishing activities using cantrang nets or Pocket Seines (JTB). In accordance with the Minister of Maritime Affairs and Fisheries Regulation Number 18 of 2021 concerning the Placement of Fishing Gear and Fishing Aids, the prohibited mesh size for cantrang nets is less than 2 inches (5 cm), so it is replaced with a Pocket Trawl Net with a minimum mesh size of 2 inches. Fish have body parts that can be measured and counted. The measurement referred to is morphometric measurement. This morphometric measurement can be used to determine fish growth patterns, feeding habits, fish classification, and as a basis for identifying fish that are catchable and those that are not yet catchable. This research was conducted with the aim of determining the morphometric characteristics of catches from vessels using the Purse Seine Fishing Gear (PSFG) by fishermen at PPN Brondong. The method used in this study is a quantitative method conducted at the TPI PPN Brondong by performing morphometric measurements of fish. Measurements were conducted by assessing 8 morphometric characters of the catch from 5 JTB boats. The results of this study indicate that the JTB fishing gear used by fishermen at PPN Brondong does not comply with the regulations on permissible fishing gear based on PERMENKP No. 18 of 2021. The allowed mesh size for operation is 5 cm or 2 inches, while the minimum width of the fish body is 3 cm or 1.1 inches, which the fishermen catch and can impact the sustainability of fish populations.

EFFECT OF LIQUID ORGANIC FERTILIZER (POC) SOAKING ON GROWTH AND CARRAGEENAN CONTENT IN SEAWEED (Kappaphycus alvarezii) CULTIVATION

2026-08-05T18:18:27+08:00

Kappaphycus alvarezii is a type of carrageenan-producing seaweed that has high economic value and is widely cultivated in Indonesia. This study aims to determine the effect of liquid organic fertilizer (POC) immersion on the growth and carrageenan content of K. alvarezii. The study was conducted for 45 days using a Randomized Block Design (RBD) with three treatments: no POC immersion (P1), 200 mL POC immersion (P2), and 250 mL POC immersion (P3). The parameters observed included absolute growth, specific growth rate (SGR), and carrageenan content. The results showed that POC immersion significantly affected seaweed growth (P<0.05). The highest absolute growth was obtained in treatment P2 at 392±13.23 g. Meanwhile, the highest carrageenan content was obtained in treatment P1 at 27.46%.

ECOLOGICAL STATUS ASSESSMENT OF THE MENDELANG RIVER, MEKAR JAYA VILLAGE, SOUTH TABIR DISTRICT, MERANGIN REGENCY, JAMBI PROVINCE BASED ON INTEGRATION OF PHYSICAL-CHEMICAL PARAMETERS AND BIOTIC INDICATORS

2026-08-05T17:52:40+08:00

Assessment of river ecological status based on the integration of physical-chemical parameters and biotic indicators is a comprehensive approach in sustainable inland water management. This study aimed to assess the ecological status of the Mendelang River, Mekar Jaya Village, South Tabir District, Merangin Regency, Jambi Province using physical-chemical parameters and fish community structure as bioindicators. Data collection was carried out in August 2025 with 16 repeated catches using modified ambat nets. Physical-chemical parameters measured included temperature, pH, dissolved oxygen (DO), water clarity, and current velocity. Biotic indicators were analyzed using the Shannon-Wiener (H'), Evenness (E), and Simpson (C) indices. The relationship between environmental parameters and species abundance was analyzed using Principal Component Analysis (PCA). Results showed 21 fish species with a total of 1,541 individuals. The H' value was 2.10 (moderate category), E was 0.69 (high), and C was 0.18 (low). Physical-chemical parameters were still within the water quality standard range of Government Regulation No. 22 of 2021. PCA indicated that temperature and DO were the main variables influencing the distribution of dominant species. Integration of indicators showed that the Mendelang River falls in a good ecological status category with a stable community structure and relatively low environmental pressure

GROWTH OF SILKWORM (Tubifex sp.) IN VERTIQUA MEDIA WITH THE ADDITION OF A BIOFICAL FILTER

2026-08-03T20:30:26+08:00

bahasa inggris

ANALYSIS OF LEAD (Pb) AND COPPER (Cu) CONTENT IN Gracilaria sp. SEAWEED FROM THE COASTAL WATERS OF SUMBERKIMA VILLAGE

2026-08-03T20:30:39+08:00

SHRIMP FARM EFFLUENT TO COASTAL MICROBIOMES AND ITS IMPLICATIONS FOR WATER QUALITY AND PATHOGEN PROLIFERATION

2026-08-03T20:30:14+08:00

Shrimp aquaculture faces significant challenges from disease outbreaks and environmental degradation caused by cultivation waste. This study aims to characterize the indicator bacteria communities in the coastal areas surrounding shrimp farms and to evaluate their correlation with water quality parameters as a tool for monitoring ecosystem health. This research employed a descriptive-observational approach and conventional cultivation on selective media, including Thiosulfate-Citrate-Bile Salts-Sucrose (TCBS) Agar and Pseudomonas Isolation Agar, to quantify the abundance of Vibrio spp. and Pseudomonas spp., respectively, alongside Marine Agar. Measurements of water quality parameters such as temperature, salinity, pH, dissolved oxygen (DO), nitrate, nitrite, and ammonia were also integrated for correlation analysis. The analysis revealed that aquaculture effluent significantly increased the abundance of total heterotrophic bacteria and Vibrio spp. in the coastal waters receiving farm waste. The abundance of Vibrio was positively correlated with temperature and pH, and negatively correlated with dissolved oxygen. Bacterial communities, including Vibrionaceae and Pseudomonadaceae, were identified as core components of the microbiome in waters exposed to anthropogenic waste. Fluctuations in environmental parameters trigger shifts in these bacterial communities, elevating the risk of pathogen and toxin presence. These findings underscore the importance of monitoring indicator bacteria for sustainable farm management, mitigating disease risks, and ensuring the suitability of coastal waters as a viable medium for aquaculture.

OPTIMIZATION OF THE DUOKAILI CRISPY PROCESSING ON THE PROXIMATE AND ORGANOLEPTIC CONTENT OF ANCHOR, MORINGA LEAF, AND SWEET POTATO-BASED PRODUCTS

2026-08-06T16:33:11+08:00

Duokaili Crispy is a traditional food of the Kaili community made from anchovies, moringa (Moringa oleifera) leaves, and sweet potatoes. However, the processing methods, particularly ingredient formulation, frying temperature, and the resulting proximate composition and sensory quality, have not yet been standardized. This study aimed to evaluate the effects of ingredient formulation and frying temperature on the proximate composition, antioxidant activity, and sensory characteristics of Duokaili Crispy. A laboratory-based experimental design was employed using four formulation treatments: F0 (50% anchovies, 0% moringa leaves, and 50% sweet potatoes), F1 (40%, 20%, and 40%), F2 (30%, 30%, and 40%), and F3 (50%, 20%, and 30%), combined with three frying temperatures: S1 (150°C), S2 (165°C), and S3 (180°C). The products were analyzed for moisture content (oven drying at 105°C), crude fat (Soxhlet extraction), ash, protein, carbohydrate content (by difference), and antioxidant activity. Sensory evaluation was conducted to assess color, aroma, taste, texture, and overall acceptability. Data were analyzed using appropriate statistical methods to determine the effects of formulation, frying temperature, and their interaction. The results showed that ingredient formulation, frying temperature, and their interaction significantly affected (p < 0.05) the proximate composition, antioxidant activity, and sensory characteristics of Duokaili Crispy. Increasing frying temperature reduced moisture and fat contents but increased ash content, whereas higher proportions of moringa leaves and anchovies significantly enhanced protein content and antioxidant activity. In contrast, the highest carbohydrate content was observed in formulations containing a greater proportion of sweet potatoes. Sensory evaluation revealed that formulation F2 processed at 165°C achieved the highest scores for color (8.30), aroma (8.40), taste (8.60), texture (8.50), and overall acceptability (8.60), indicating that this treatment represented the optimum processing condition for Duokaili Crispy.

FORMULATION AND CHARACTERIZATION OF RICE FLOUR-BASED INSTANT NOODLES WITH THE ADDITION OF AFRICAN CATFISH (CLARIAS GARIEPINUS) MEAT FLOUR AS A PROTEIN SOURCE

2026-08-06T16:04:13+08:00

Instant noodles are generally made from wheat flour, which still relies on imported raw materials. An alternative approach is utilizing rice flour with the addition of African catfish (Clarias gariepinus) meat flour as a protein source. This study aimed to formulate rice flour-based instant noodles enriched with African catfish meat flour and analyze its effects on chemical, physical, and organoleptic characteristics. The study employed a Completely Randomized Design (CRD) with four treatment levels: P0 (0 g), P1 (15 g), P2 (25 g), and P3 (35 g), each with three replications. Chemical and physical data were analyzed using ANOVA followed by Duncan's test, while organoleptic data were analyzed using the Kruskal-Wallis test followed by Dunn's test at a 95% confidence level. The results showed that the addition of African catfish meat flour increased moisture content from 3.69±0.20% to 7.30±0.39%, ash content from 4.43±0.14% to 5.84±0.24%, fat content from 4.41±0.11% to 5.73±0.06%, protein content from 11.07±0.20% to 12.75±0.28%, and rehydration time from 12.18±0.05 minutes to 16.14±0.05 minutes. However, it decreased carbohydrate content from 76.40±0.28% to 68.02±0.93%, as well as the hedonic quality scores and panelists' preference levels for appearance, aroma, texture, and taste. All treatments still complied with the instant noodle requirements based on SNI 3551:2018 and BPOM Regulation Number 26 of 2021.

Key words: African catfish, Fish Meal, Instant Noodle, Rice Flour

TESTING OF PROTEIN CONTENT, WATER CONTENT AND ORGANOLEPTIC QUALITY OF BLOOD SEA CUCUMBER (Holothuria Edulis) WITH DIFFERENT OVENING TEMPERATURES

2026-08-06T16:20:11+08:00

Sea cucumber is one of the marine organisms with high economic value, often used as food and in traditional medicine. Sea cucumbers are marine animals that are easily damaged, so they require post-harvest processing to extend their shelf life. One preservation method commonly used is drying. This study aims to determine the moisture content, protein content, and organoleptic quality of dried blood sea cucumber (Holothuria edulis) at different oven temperatures. The research used a descriptive quantitative approach with oven drying at five temperature treatments: P1 (50°C), P2 (60°C), P3 (70°C), P4 (80°C), and P5 (90°C), with each treatment replicated three times. The parameters observed included moisture content, protein content, and organoleptic tests of appearance, aroma, and texture by 25 untrained panelists. The collected data were analyzed by calculating the average value for each testing parameter. The results revealed that increasing the oven temperature consistently reduced the moisture content, reaching a range of 1.44% to 1.10%, and increased the protein content from 12.06% to 17.63%. The organoleptic evaluation indicated that a temperature of 90°C produced the highest scores for appearance, aroma, and texture. Overall, the treatment using a drying temperature of 90°C (P5) provided the highest values for all tested parameters and is recommended as the best treatment in the processing of dried blood sea cucumber to obtain good physical quality, protein content, and moisture content.

BIOASSESSMENT OF COASTAL WATER QUALITY IN PENYENGAT ISLAND BASED ON MACROZOOBENTHIC COMMUNITY STRUCTURE

2026-08-06T10:28:58+08:00

The coastal ecosystem of Penyengat Island in Tanjungpinang City is an area with high ecological and economic value, however, various anthropogenic activities such as settlements, sea transportation, tourism, and reclamation around the Tanjungpinang coast are suspected to put pressure on water quality. This study aims to determine the abundance and ecological index of macrozoobenthos, water quality conditions based on the A Marine Biotic Index (AMBI), and the relationship between macrozoobenthos abundance and water physicochemical parameters. The study was conducted in February 2026 using a survey method with a systematic random sampling technique. Sampling used an Ekman grab measuring 30 × 30 cm. Data were analyzed using diversity, evenness, dominance, AMBI index, and Spearman correlation tests. The results showed that 24 genera of macrozoobenthos were found consisting of the classes Gastropoda (12 genera), Bivalvia (8 genera), Malacostraca (1 genus), Polychaeta (2 genera), and Oligochaeta (1 genus) with an abundance of 42.22 ind/m². The diversity index (H') value is classified as moderate (2.67), uniformity (E) is high (0.84), and dominance (C) is low (0.10). In general, the water quality still meets the quality standards. Based on the AMBI value, the quality of the coastal waters of Penyengat Island is classified as slightly polluted, which indicates environmental pressure due to the input of organic materials. The results of the Spearman correlation test indicate that the physicochemical parameters have a very weak and insignificant relationship.

FORTIFICATION OF RED SEAWEED (Kappaphycus alvaresii) FLOUR IN SNACK BAR FORMULATION AS AN EVALUATION OF IODINE CONTENT AND TEXTURE IMPROVEMENT

2026-08-06T16:02:31+08:00

Consumer interst in pratical, nutrient-dense funcional foods has prompted the devolopment of healthy snack alternatives from local raw materials. The read seaweed Kappaphycus alvarezii shows promise as a fortiying ingredient, not only for its iodine content and physical texture, but also its moisture profile and overall influence on the snack bar’s sensory traits. To evaluate this potential, a completely randoomized design was set up across four treatments-a seaweed-free control, and three others fortified with seaweed flour at 10%, 20%. And 30%. The evaluation parameters covered moisture, iodine, hardness, and a hedonic sensory test with 25 semi-trainet panelists. Chemical and texture data were subjected to ANOVA followed by Duncan’s test, while sensory scores underwent Kruskal-Wallis and Dunn’s analyses. Ouf findings revealead that the 30% level produced the highest iodine reading, at 60,93 µg/g. Moisture content dropped sharply (p<0,05) from 17.53% in the control to 12.53% in the 30% treatment-although this still slightly exceeds the 11.26% cap set by SNI 01-4216-1996. Hardness readings ranged from 4333.74 to 4588.68 gf, which falls well within the typical span of commercial snack bars. In terms of sensory response, seaweed inclusion markedly affected color, aroma, and texture, but did not significantly alter taste scores. Overall, the 10% seaweed formulation stood out as the best, yielding higher iodine than the control, maintaining an acceptable mouthfeel, and earning the highest panelist preference. Taken together, these results position this particular formulation as a viable candidate for a functional food product aimed specifically at boosting dietary iodine intake.

IMPLEMENTATION OF PANCASILA VALUES REGARDING PLASTIC WASTE MANAGEMENT AWARENESS AMONG THE COASTAL COMMUNITY OF TAPIAN NAULI I VILLAGE

2026-08-05T18:12:14+08:00

Sampah plastik di wilayah pesisir Indonesia merupakan ancaman serius bagi ekosistem laut dan ekonomi nelayan. Desa Tapian Nauli I, Tapanuli Tengah, Sumatera Utara, menghadapi akumulasi sampah plastik akibat praktik pengelolaan yang tidak terkelola dan keterbatasan fasilitas. Penelitian ini bertujuan mengidentifikasi tingkat kesadaran masyarakat terhadap pengelolaan sampah plastik dan menganalisis implementasi nilai-nilai Pancasila dalam menjaga kebersihan lingkungan pesisir. Pendekatan deskriptif kualitatif diterapkan dengan pengumpulan data melalui observasi, wawancara, dan dokumentasi pada 40 responden pada Juni 2026. Data dianalisis secara kualitatif-deskriptif untuk menggambarkan pengetahuan, sikap, praktik pengelolaan sampah, serta perwujudan nilai Pancasila. Hasil menunjukkan kesadaran dan pengetahuan masyarakat mengenai bahaya sampah plastik tergolong baik; mayoritas memahami dampak ekologis dan ekonomi. Namun, terjadi kesenjangan signifikan antara pengetahuan dan praktik: 87,5% responden mengakui pernah membuang sampah ke laut atau membakar sampah, terutama karena keterbatasan fasilitas pembuangan dan minimnya sistem pengelolaan. Nilai agama dan Pancasila terutama gotong royong, persatuan, dan tanggung jawab sosial—tertanam kuat dan memotivasi partisipasi dalam kegiatan kebersihan, meski partisipasi belum merata. Hambatan utama meliputi faktor struktural (kekurangan fasilitas) dan kultural (kebiasaan penggunaan plastik tinggi). Penelitian ini menyimpulkan bahwa pengelolaan sampah plastik memerlukan pendekatan holistik yang mengintegrasikan penguatan fasilitas infrastruktur, edukasi partisipatif berkelanjutan, penegakan regulasi, serta penguatan nilai lokal berbasis Pancasila untuk mendorong tindakan kolektif dan keberlanjutan lingkungan pesisir.

COMPARATIVE ANTIBACTERIAL EFFICACY OF ETHANOL AND AQUEOUS EXTRACTS OF BANGKA LOCAL LEAF EXTRACT AGAINST Aeromonas hydrophila

2026-08-06T10:30:57+08:00

Motiled Aeromonas Septicemia (MAS) is a disease caused Aeromonas hydrophila. It is opportunistic pathogen that can cause fosh mortality up to 90%. The use antibiotics to control MAS has led resistance on bacteria, therefore the use herbal for alternative treatments. The aim riset is to determine the effect of different solvents on the antibacterial activity of leaf extracts of bini simpur, kedebik, and mengkirai against Aeromonas hydrophila. The methods was diffusion with two types of solvents (ethanol and distilled water). Phytochemical screening included alkaloids, tanins, sapponins, triterpenoids, and flavonoids. The results of phytochemical screening showed that ethanol extract contain tanins, sapponins, triterpenoids, and flavonoids. The highest inhibition zone was bini simpur extract with ethanol, ant the lowest was mengkirai extract with distiked water.

SWOT ANALYSIS OF THE DEVELOPMENT OF NILE TILAPIA (Oreochromis niloticus) GROW-OUT FARMING BUSINESSES IN CIREBON CITY, WEST JAVA

2026-08-05T18:00:16+08:00

WATER QUALITY OF TUBIFEX WORM CULTURE IN VERTIQUA TECHNOLOGY

2026-08-03T20:30:32+08:00

Tubifex sp. culture is an important source of natural feed with high nutritional value for fish larvae and juveniles. The dependence on natural harvesting results in unstable availability, highlighting the need for an efficient cultivation system capable of maintaining water quality. This study aimed to evaluate the water quality of Tubifex sp. cultured using Vertiqua technology integrated with a recirculating system and a Biofical Filter. The experiment was conducted from November 2025 to January 2026 at the Bossbaster experimental pond, Sukabumi Regency, Indonesia. Observed parameters included temperature, pH, dissolved oxygen (DO), ammonia, nitrite, nitrate, phosphate, alkalinity, turbidity, and odor indicators. Temperature, pH, and DO were measured daily, while the remaining parameters were analyzed at the beginning, middle, and end of the culture period. The results showed that the average temperature (26.4°C), pH (7.45), alkalinity (105.8 mg/L), nitrate (4.65 mg/L), phosphate (0 mg/L), and turbidity (0 NTU) remained within acceptable ranges for Tubifex culture. However, dissolved oxygen (3.51 mg/L), ammonia (1.515 mg/L), and nitrite (0.236 mg/L) exceeded the recommended water quality standards. Despite these limitations, the Biofical Filter integrated into the Vertiqua system maintained relatively stable water quality, reduced odor, and minimized organic waste accumulation throughout the culture period. Therefore, Vertiqua technology has considerable potential for Tubifex culture on limited land, although further optimization of the filtration system is required to improve dissolved oxygen and reduce ammonia and nitrite concentrations.

DEVELOPMENT OF A FISHERY CULTIVATION MODEL AS A MINATOURISM OBJECT IN SUMBERKIMA VILLAGE, GEROKGAK DISTRICT, BULELENG

2026-08-03T20:30:46+08:00

Sumberkima Village, Gerokgak District, Buleleng Regency has fishery cultivation potential in the form of floating net cages (KJA) as well as coastal ecosystems that support minatourism development. This study aims to determine the fishery cultivation potential that can be developed into a minatourism object and to design a sustainable fishery cultivation development model to support minatourism in Sumberkima Village. The study used a Research and Development (R&D) approach with the ADDIE model, involving 77 respondents determined using the Slovin Formula, consisting of aquaculture business actors, local minatourism managers, village officials, and tourists. Data were analyzed using multiple linear regression and SWOT (IFAS-EFAS) analysis. The results showed that fishery cultivation potential (X1) and community participation (X3) had a positive and significant effect on minatourism development (Y), while supporting facilities (X2) had no significant effect, with a coefficient of determination (R2) of 0.761. The SWOT analysis placed Sumberkima Village in Quadrant I with coordinate point (0.85 ; 1.05), indicating that an aggressive (SO) strategy is the most appropriate strategy to apply. The recommended development model integrates local potential, supporting facilities, and community participation, while still considering environmental, economic, and social sustainability aspects. Minatourism; Sumberkima Village; SWOT

PRODUCTIVITY OF HYBRID GOLDFISH (Carassius auratus) HATCHERIES USING THE SMART-K MODEL

2026-08-03T20:30:20+08:00

The productivity of hybrid goldfish (Carassius auratus) hatcheries remains relatively low due to non-standardized hatchery management, particularly in broodstock management, larval rearing, and water quality control. This study aimed to analyze the effect of implementing the SMART-K model (Technology and Partnership-Based Aquaculture Management System) on the productivity of hybrid goldfish hatcheries. The study was conducted from November to December 2025 at hatchery ponds located in Cicantayan, Nagrak Cisaat, and Cimenteng, Sukabumi Regency. A quantitative approach was applied by comparing fry productivity before and after the implementation of the SMART-K model in the same hatchery units. Observed parameters included fry productivity at the end of the rearing cycle and water quality parameters, namely temperature, pH, and dissolved oxygen (DO). Data were analyzed descriptively and further examined using a paired t-test. The results showed that the average fry productivity increased from 3.61 liters before SMART-K implementation to 15.72 liters after implementation, with a statistically significant difference (p < 0.05). The application of the SMART-K model had a significant effect on improving the productivity of hybrid goldfish hatcheries.

THE EFFECT OF TOFU DREGS AND CUCUMBER ON THE GROWTH OF TUBIFEX WORMS (Tubifex sp.)

2026-01-25T13:04:45+08:00

Tubifex worms (Tubifex sp.) are high-protein natural feed organisms for fish fry, and the use of tofu dregs and cucumber as a culture medium may support their growth. This study aimed to determine the effect of using tofu dregs and cucumber as a culture medium on the growth of Tubifex worms. Tubifex worms are a protein-rich natural feed widely used in fish and shrimp farming, especially during the larval stage. Tofu dregs, a solid by-product of the tofu industry, contain protein and fiber, while cucumber has a high water content and contains minerals that may support substrate moisture and quality. The study was conducted experimentally using a completely randomized design (CRD) with four treatments: A (100% tofu dregs), B (85% tofu dregs + 15% cucumber), C (75% tofu dregs + 25% cucumber), and D (65% tofu dregs + 35% cucumber), with three replications for each treatment. The parameters observed included absolute biomass growth (g), individual abundance (individuals/L), and water quality (temperature and pH). Treatment C produced the highest average biomass growth (62.00 g) and individual abundance (89.22 individuals/L). These results indicate that a combination of 75% tofu dregs and 25% cucumber was the optimal medium formulation for supporting the growth of Tubifex sp. The use of organic materials such as tofu dregs and cucumber in Tubifex worm culture may provide an efficient, inexpensive, and environmentally friendly alternative for natural-feed production.

THE EFFECTIVENESS OF THE USE OF AQUAPONIC SYSTEMS USING CHITOSAN FILTERS ON WATER QUALITY IN AMMONIA, NITRITE, AND NITRATES TEST PARAMETERS

2026-08-03T20:30:02+08:00

Chitosan is a polysaccharide compound derived from chitin obtained from marine animal shell waste and can act as a biocoagulant and bioflocculant in maintaining water quality. This study aims to determine the effectiveness of chitosan with different concentrations in improving water quality as seen from the content of ammonia, nitrite, and nitrates in the aquaponic system. This study was carried out for 30 days in Banjar Tegal Village, Buleleng District, Buleleng Regency, Bali Province using a Complete Random Design (RAL) with three treatments and three replicas. The treatments used include A (Aquaponic system without chitosan filter), B (Aquaponic system with the addition of chitosan filter with a dose of 30 mg/L), C (Aquaponic system with the addition of chitosan filter with a dose of 50 mg/L). Data was collected using a simple random sampling method and analyzed using quantitative and qualitative descriptive data analysis techniques. The results showed that the water quality performance (ammonia, nitrite, and nitrate test parameters) of the aquaponic system in the treatment of adding chitosan filters with a concentration of 50 mg/L (Treatment C) was better when compared to the control and with the treatment of adding chitosan filters with a concentration of 30 mg/L.

NUTRIENTS FROM Avicennia alba AND Rhizophora mucronata IN MANGROVE AND CRAB CONSERVATION AREA, TARAKAN CITY

2026-06-13T07:06:46+08:00

Mangrove ecosystems exhibit high productivity resulting from the decomposition of litter, which contains various nutrients such as carbon, nitrogen, and phosphorus that benefit both the mangrove plants themselves and the surrounding aquatic ecosystems. This study aims to determine the nutrient content (carbon, nitrogen, and phosphorus) of decomposed litter from Avicennia alba and Rhizophora mucronata. The study was conducted in the Tarakan City Mangrove and Crab Conservation Area, North Kalimantan, from April to June 2026, using a quantitative method with a descriptive-exploratory approach, taking into account the characteristics of the dominant mangroves at three study sites. The results showed that the decomposition rate of A. alba mangrove litter ranged from 0.22 to 0.64 grams/day and that of R. mucronata ranged from 0.25 to 0.67 grams/day; furthermore, no leaf litter from either A. alba or R. mucronata decomposed 100%. The carbon content of A. alba ranged from 9.45% to 13.45%, nitrogen from 0.64% to 0.72%, and phosphorus 0.25% to 0.29%, while the carbon content of R. mucronata ranged from 21.50% to 22.45%, nitrogen from 0.58% to 0.83%, and phosphorus from 0.06% to 0.009%. The values of the physical and chemical parameters of the water still support the decomposition process of litter.

THE ROLE AND IMPACT OF THE DWI TIRTO MULYO COOPERATIVE ON EMPOWERING PARTICIPATION AND THE SOCIO-ECONOMIC CONDITIONS OF MEMBERS OF KALIGRENJENG VILLAGE, BLITAR

2026-06-02T21:06:57+08:00

This study aims to analyze the role and impact of the Dwi Tirto Mulyo Cooperative on empowering participation and the socio-economic conditions of members in Kaligrenjeng Village, Blitar Regency. This research uses a qualitative descriptive method with data collection techniques including observation, interviews, questionnaires, and documentation. The results show that the cooperative has a significant positive impact on members’ socio-economic conditions, indicated by improvements in employment (89%), income (98%), and access to capital (86%), all categorized as agree. Member participation is categorized as high in decision-making (94.74%), implementation (93.66%), benefit utilization (96.36%), and supervision (83.64%). Furthermore, the cooperative’s role in member empowerment is categorized as very high with an average of 94.13%. Overall, the cooperative has effectively improved members’ welfare, although improvements are still needed in supervision and financial service development.

THE EFFECT OF DIFFERENT TYPES OF BAIT ON THE CATCHES OF MANGROVE CRABS (Scylla serrata) USING FOLDING TRAP FISHING GEAR IN THE WATERS OF TANJUNG PECINAN MANGARAN DISTRICT SITUBONDO REGENCY

2026-07-25T21:28:00+08:00

This study was conducted to assess the effect of different bait types on the catch of mangrove crab (Scylla serrata) using a collapsible trap in the waters of Tanjung Pecinan, Mangaran District, Situbondo Regency. The purpose of this study was to determine the effect of bait type on mangrove crab catches. This study used a Randomized Block Design (RBD) method which included 3 treatments and 9 fishing trips. The bait types used were trash fish, field snails, and shrimp. Ten collapsible traps were used for each treatment, randomly spaced 5 meters apart. Additionally, supporting parameters included water quality, waves, current speed, temperature, and tides. Data were analyzed using SPSS with normality tests, homogeneity tests, ANOVA tests, and LSD tests. The data analysis concluded that trash fish and shrimp baits yielded better catches than golden apple snails.

ANTIBACTERIAL ACTIVITY OF Sargassum sp. IN INHIBITING Vibrio sp. ISOLATED FROM CANTANG GROUPER (Epinephelus fuscoguttatus x Epinephelus lanceolatus)

2026-07-25T21:28:07+08:00

Treatment of vibriosis using natural ingredients such as Sargassum sp. extract in cantang grouper cultivation activities needs to be studied. Testing the effectiveness of solvents in producing phytochemical compounds as antibacterials and modifying the extraction process to make it simpler aims to be replicated by farmers in the field. The tested bacterial isolates were isolated directly from cantang grouper fish showing symptoms of vibriosis from fish farmers in Senggarang Besar, Tanjungpinang City. Testing the antibacterial activity of Sargassum sp. extract in inhibiting the growth of Vibrio sp. was carried out through an inhibition zone test using the paper disc diffusion method (Kirby-Bauer method). The results showed that the use of 70% alcohol solvent in the extraction process resulted in a clearer and better inhibition zone diameter of 13 mm at the highest treatment concentration (10%) compared to the extract using 96% alcohol solvent at the same concentration of 11.67 mm. It should be noted that the inhibition zone formed is classified as partial because it is not clear or completely clear due to the presence of thin bacterial growth in the zone even though the circle shape of the inhibition zone is quite clear. The use of 70% alcohol solvent can be used for the extraction process of Sargassum sp. considering that it is cheaper and the results are better than 96% alcohol based on the results shown through this study.