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EVALUATION FEASIBILITY AND BUSINESS DEVELOPMENT STRATEGY ENLARGEMENT WHITE SHRIMP (LITOPENAEUS VANNAMEI) AT DUKUHTUNGGAL VILLAGE GLAGAH SUB DISTRICT LAMONGAN Lutfi, Ika Maulana; Hermawan, David; Zubaidah, Anis
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Publisher : University of Muhammadiyah Malang

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

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

ANALYSIS OF GROUPER BUSINESS DEVELOPMENT IN GEROKGAK DISTRICT, BULELENG REGENCY, BALI PROVINCE Hermawan, David; Sutarjo, Ganjar Adhywirawan; Aziz, Abdul
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Publisher : University of Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/ijota.v2i2.11131

Fisheries development is a human effort in increasing the utilization of all fishery's biological resources which include the fishery capture, aquaculture, and processing sectors. Grouper is a commodity that has high economic value, but the amount of aquaculture production is still low, one of which is in Gerokgak district. This research was conducted from February to March 2018, in Gerokgak District, Buleleng Regency, Bali Province. Data obtained through interviews, observations, documentation, and questionnaires directly with respondents, namely the Department of Maritime Affairs and Fisheries of Buleleng Regency, business owners, managers, and grouper farmers. The analysis used in this study was to obtain a grouper cultivation strategy using a SWOT analysis. From the results of the calculation of the analysis and determination of the SWOT matrix, thew government must increase grouper aquaculture results by increasing the number of hatchery and enlargement businesses. The government is more responsive to the problems faced by farmers.Keywords: Aquaculture, Development strategy, Fisheries, Grouper, SWOT

Pengaruh pengkayaan Daphnia sp. menggunakan astaxanthin terhadap kualitas warna merah ikan Cupang Halfmoon (Betta splendens, Regan 1910) Prasetyo, Dony; Handajani, Hany; Hermawan, David; Fuhaira, Iqbal
JSIPi (Jurnal Sains dan Inovasi Perikanan) (Journal of Fishery Science and Innovation) Vol 4, No 1 (2020): JURNAL SAINS dan INOVASI PERIKANAN
Publisher : Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33772/jsipi.v4i1.11071

Betta splendens adalah salah satu jenis ikan hias yang mempunyai daya tarik dan nilai ekonomis pada kualitas warna yang dimunculkan dari tubuhnya. Tujuan dari penelitian ini adalah untuk mengetahui pemberian pakan hidup yang diperkaya dengan astaxanthin CarophyllÂ© red dapat meningkatkan kualitas warna merah pada ikan cupang halfmoon merah serta untuk mengetahui dosis CarophyllÂ© red yang memberikan nilai optimal bagi warna ikan cupang. Metode penelitian yang digunakan adalah menggunakan metode rancangan acak lengkap (RAL) dengan perlakuan dosis CarophyllÂ© red yang diperkaya melalui Daphnia sp. dengan 5 perlakuan 5 ulanganÂ : 0 g (kontrol); 0,25 g L-1; 0,5 g L-1; 0,75 g L-1 dan 1 g L-1. Ikan yang digunakan adalah ikan cupang halfmoon dengan warna yang seragam. Pengamatan yang dilakukan selama 28 hari meliputi kualitas warna yang dilakukan dengan menggunakan alat color reader, perhitungan jumlah konsumsi Daphnia sp. selama pemeliharaan, pertumbuhan panjang, bobot yang dihasilkan dan kualitas air. Hasil penelitian menunjukkan bahwa peningkatan kualitas warna pada ikan cupang optimal dengan dosis 0,25-0,5 g L-1. Namun peningkatan warna bersifat temporer. Tidak terdapat perbedaan signifikan terhadap pertumbuhan bobot dan panjang mutlak, laju pertumbuhan berat mutlak. Pengkayaan Dapnia sp. dengan CarophyllÂ© red dapat mingkatkan konsumsi pakan dan sintasan ikan Cupang.

Optimation of tempe liquid waste usage for growth performances and feed uptake on Oreochromis niloticus Andriawan, Soni; Hermawan, David; Rahmania, Shafira
Journal Omni-Akuatika Vol 20, No 1 (2024): Omni-Akuatika May
Publisher : Fisheries and Marine Science Faculty - Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.oa.2024.20.1.1076

Tempe liquid waste (TLW) contains nutrients such as fat, protein, carbohydrates, nitrogen, phosphate, and potassium that could be used in fish rearing. Moreover, it has lactic acid bacteria (LAB) belonging to gram-positive microorganisms, which could decompose organic and inorganic matter in water. Therefore, this study aimed to determine whether TLW could have the potential to enhance Tilapia (Oreochromis niloticus) growth and improve feed efficiency. The study used 180 fish (6.04 ± 0.13 g) reared in twelve aquariums and TLW was obtained from boiling soybeans during the tempe production process in the village of Sanan, Malang. The research design was Completely Randomized Design (CRD), which involved four treatments, T0 (no TLW), T1 (3%), T2 (5%), and T3 (7%) with three replications. The result showed that T2 resulted in the highest growth rate (11.22 ± 0.29 g), specific growth rate (2.07 ± 0.32% / day), feed conversion rate (1.54 ± 0.16), feed efficiency (56.02 ± 1.24%) and survival rate (91.11 ± 0.58%) compared to others. Nonetheless, there was no difference in the absolute length (Lm) parameter at the end of the research. The research results also found that water quality remained favourable for supporting tilapia cultivation under all observed conditions, except for the oxygen levels in the control group, which fell below the standard (<3 mg L-1). Finally, the present study concluded that 5% of TLW could be the best; in contrast, the higher concentration of TLW decreased O. niloticus growth performance, feed efficiency, and survival rate.Keywords: fish development, tilapia, wastewater, water qualities

Optimizing the addition of Skeletonema Costatum flour in feed for the growth and survival of koi fish (Cyprinus carpio) Hakim, Riza Rahman; Hidayat, Reyhan Rafisyah; Hermawan, David; Prasetyo, Dony
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica, Vol. 12: No. 1 (April, 2025)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v1i1.18545

Selecting the appropriate feed is one of the most important factors in cultivating koi fish. High-quality feed is feed that contains a comprehensive range of essential nutrients, including protein, fat, carbs, vitamins, and minerals. Skeletonema costatum, which has a protein content of approximately 31%, is a good dietary option for promoting the growth of koi fish. This research aims to determine the effect of providing skeletonema flour on the growth and survival of Koi fish. The method used is experimental. The research design used a completely randomized design (CRD) with five treatments and three replications. The treatment used in this research was the addition of skeletonema flour to the feed at different doses, namely P0 (0%), P1 (1%), P2 (3%), P3 (5%), and P4 (7%). The results of the research showed that the addition of Skeletonema costatum flour to artificial feed gave effective results in increasing absolute weight growth but had no effect on absolute length growth, FCR, or survival of koi fish. The best treatment was treatment P4, namely the addition of 7% skeletonema flour, which resulted in an absolute weight growth of 2.3 grams and the lowest FCR.Keywords: Growth; Koi Fish; Skeletonema costatum; Survival Rate

Rose anthocyanin microencapsulation for improving the color of two strains of koi Andriawan, Soni; Hakim, Riza Rahman; Hermawan, David; Bahiyya, Choridatul; Darmawan, Ari Wahyu; Miranda, Felix; Dahlia, Lisma; Dewantari, Arinta Agnie
Depik Jurnal Ilmu Ilmu Perairan, Pesisir, dan Perikanan Vol 14, No 3 (2025): SEPTEMBER 2025
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.14.3.46784

Koi fish coloration is genetically significant, but environmental factors and color quality can lead to degradation. Some individuals use synthetic dyes to enhance their appearance, which harms the environment. This study explored the effects of microencapsulated Rose sp. flower anthocyanin (MRFA) as a natural alternative dye to enhance the color of Sanke and Kohaku koi fish. Sanke exhibits orange-black hues, while Kohaku shows orange-white hues, allowing for comparative analysis. Before the experiment, MRFA was analyzed using FESEM and XRD to assess the particle size distribution and shape of the anthocyanin microcapsules. A Randomized Complete Design (CRD) with four treatments (T0, 150 mg (T1), 300 mg (T2), and 450 mg (T3)) and five replications were used. Data was analyzed with SPSS. Results showed that MRFA particles were distributed, though not entirely homogeneous (14 m to 170 m), with XRD spectra indicating interactions between maltodextrin and Rose sp. anthocyanin. Results showed that MRFA significantly improved certain color parameters in Sanke, particularly at moderate doses (T1 and T2), but the control group (T0) outperformed MRFA in some cases. In Kohaku, no significant improvement was observed compared to the control, suggesting that MRFA was less effective in enhancing whiteorange pigmentation. Overall, our findings indicate that MRFA supported koi growth but showed limited, strain-specific effects on coloration. Further studies with longer trials and larger populations are needed to confirm its potential as a natural feed additive.Keywords:Herbal extractCyprinus carpioKohakuPigmentSanke

Rose anthocyanin microencapsulation for improving the color of two strains of koi Andriawan, Soni; Hakim, Riza Rahman; Hermawan, David; Bahiyya, Choridatul; Darmawan, Ari Wahyu; Miranda, Felix; Dahlia, Lisma; Dewantari, Arinta Agnie
Depik Jurnal Ilmu Ilmu Perairan, Pesisir, dan Perikanan Vol 14, No 3 (2025): SEPTEMBER 2025
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.14.3.46784

Koi fish coloration is genetically significant, but environmental factors and color quality can lead to degradation. Some individuals use synthetic dyes to enhance their appearance, which harms the environment. This study explored the effects of microencapsulated Rose sp. flower anthocyanin (MRFA) as a natural alternative dye to enhance the color of Sanke and Kohaku koi fish. Sanke exhibits orange-black hues, while Kohaku shows orange-white hues, allowing for comparative analysis. Before the experiment, MRFA was analyzed using FESEM and XRD to assess the particle size distribution and shape of the anthocyanin microcapsules. A Randomized Complete Design (CRD) with four treatments (T0, 150 mg (T1), 300 mg (T2), and 450 mg (T3)) and five replications were used. Data was analyzed with SPSS. Results showed that MRFA particles were distributed, though not entirely homogeneous (14 m to 170 m), with XRD spectra indicating interactions between maltodextrin and Rose sp. anthocyanin. Results showed that MRFA significantly improved certain color parameters in Sanke, particularly at moderate doses (T1 and T2), but the control group (T0) outperformed MRFA in some cases. In Kohaku, no significant improvement was observed compared to the control, suggesting that MRFA was less effective in enhancing whiteorange pigmentation. Overall, our findings indicate that MRFA supported koi growth but showed limited, strain-specific effects on coloration. Further studies with longer trials and larger populations are needed to confirm its potential as a natural feed additive.Keywords:Herbal extractCyprinus carpioKohakuPigmentSanke

Analysis of the yellowfin tuna marketing chain at PPP Pondok Dadap Sendang Biru, South Malang Andriawan, Soni; Aprilia, Ivony Rosa; Hermawan, David
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica: Jurnal Ilmu Perairan, Vol. 9: No. 3 (December, 2022)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v9i3.6872

The goal of this study was to investigate the yellowfin tuna marketing chain in PPP Pondok Dadap Sendang Biru. Additionally, this study determined the margin and price share earned by yellowfin tuna fisherman. This research employed a survey strategy that included direct observation and interviews. The data used were original sources collected during October and November 2021. The respondents were chosen using the snowball sampling technique, which is a technique for identifying informants or respondents who possess a wealth of information on the research being conducted. There were 37 respondents. According to the study's findings, there are three distinct channels for yellowfin tuna marketing at PPP Pondok Dadap Sendang Biru. In chain 2, retailers earned the largest overall margin of Rp. 8,864/Kg, or 29 percent. In channel 3, retailers earned the largest overall margin of Rp. 12,000/Kg, or 34%. The biggest Fisherman's share, at 62 percent, is in the type 2 marketing chain.Keywords: fishermans share; marketing chain; margin; tuna

Growth performance of eel fish (Anguilla bicolor) which are maintained in containers of different colors Handajani, Hany; Hermawan, David; Jasmine, Andrea Sherina
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica, Vol. 11: No. 2 (August, 2024)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v11i2.15205

Performance of Eel (Anguilla bicolor) maintened in containers of different colors. Growth is the main driver in increasing the profitability of aquaculture. In addition to maintenance management the color of the container is also a factor supporting the growth of eels. This study aims to determine the effect of the color of different rearing containers on the growth and appetite response of eel. The test fish used were elver stage eels with an average weight (129 ±131g). The method used is an experiment with two treatments they are grey and green. The test fish were placed in a container measuring 19x4 m2 and a water level of 1m with a stocking density of 1100 individuals each, 30 days of rearing. The variables observed were growth performance including SR (Survival Rate), ADG (Average Daily Growth), FCR (Food Conversion Ratio), SGR (Specific Growth Rate). The results obtained indicated that there was a significant difference in the average growth of fish reared in grey and green containers. Grey container treatment was proven to get higher yields with average final weight values (192.4 ± 4.5 g), FCR (1.01 ± 0.02), ADG (2.01g/day ± 0.06), SGR (1 .25%BW/day±0.02). Based on the results of the study it can be concluded that there is a significant difference in the growth of eels reared in ash and green containers. The color of the ash container proved to be better in supporting growth performance.Keywords: Elver; Green; Grey; Nocturnal

Peningkatan Kemampuan Membaca Intensif Melalui Metode Role Playing dalam Kegiatan Pasar Baca Hermawan, David; Ahmala, Majidatun
MADROSATUNA : Jurnal Pendidikan Guru Madrasah Ibtidaiyah Vol. 8 No. 1 (2025)
Publisher : Latifah Pres

Show Abstract | Download Original | Original Source | Check in Google Scholar

Rendahnya tingkat kemampuan membaca anak kelas 3 MIS Tanjungsari disebabkan oleh banyak faktor diantaranya adalah kurangnya minat anak dalam membaca, sedikitnya jumlah bacaan yang sering dijumpai oleh anak, kurangnya perhatian dari orang tua dan guru terhadap kemampuan membaca anak, ketidakmampuan guru dalam menerapkan metode dan media belajar membaca yang tepat, serta pelaksanaan kegiatan pembelajaran yang masih bersifat monoton dan membosankan bagi siswa. Hal tersebut dapat dilihat dari 21 siswa yang ada hanya 7 siswa saja yang benar-benar sudah pandai dan lancar dalam membaca, sedangkan 14 diantaranya masih belum terlalu pandai dan lancar dalam membaca. Oleh sebab itu, peneliti melaksanakan metode role playing dengan kegiatan pasar baca untuk meningkatkan kemampuan membaca intensif. Metode penelitian yang digunakan adalah metode deskriptif kualitatif. Hasil penelitian menunjukan bahwa dengan metode role playing melalui kegiatan pasar baca ini dapat meningkatkan semangat dan antusias anak dalam belajar membaca, meningkatkan rasa kekeluargaan dan solidaritas antar teman, meningkatkan kemampuan membaca anak, serta dapat meningkatkan kemampuan berpikir anak dalam mengolah dan merangkai huruf maupun kata.

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