In intensive shrimp culture, oxygen consumption of shrimp is an important indicator that greatly affects the physiological condition of shrimp as a reared organism. The purpose of this study was to dynamically determine the oxygen consumption of shrimp in intensive culture as well as the variables of water quality and shrimp growth. This research was conducted with the concept of ex-post facto causal design in intensive aquaculture ponds during the shrimp cultivation period. During the shrimp culture period, the rate of oxygen consumption of shrimp is inversely related with the sigmodial average increase in shrimp body weight. Meanwhile, based on the simulation analysis with the dynamic modeling concept, it is shown that oxygen consumption was linear to the dynamics of average daily gain and inversely proportional with the increasing rate of shrimp biomass in the ponds. In addition, oxygen consumption rate of shrimp in intensive ponds had a close relationship with water salinity and total organic matter. In conclusion, dynamically, the fluctuation of oxygen consumption rate and average daily gain of shrimp in intensive culture are closely related to the stability of the water quality conditions on the shrimp habitat.
Budidaya rumput laut adalah salah satu sub-kegiatan akuakultur yang sangat potensial untuk dikembangkan di Kecamatan Banyuputih, Situbondo. Tujuan dari penelitian ini adalah untuk memetakan kesesuaian lahan budidaya di Kecamatan Banyuputih Situbondo guna dapat digunakan sebagai area budidaya rumput laut berdasarkan nilai indikator parameter kimia air yang ada. Penelitian ini dilaksanakan di perairan pesisir Kecamatan Banyuputih, Situbondo selama bulan januari-maret 2019 dengan konsep penelitian lapang dan analisa spasial dari pengambilan data kimia air (oksigen terlarut, fosfat, dan nitrat) yang kemudian dianalisis menggunakan metode Inverse Distance Weighting (IDW) dan overlay pada aplikasi GIS (Geographic Information System) guna mendapatkan model visualisasi peta tematik kesesuaian lahan. Hasil penelitian menunjukan parameter oksigen terlarut, fosfat, serta nitrat berfluktuasi secara variatif dan dinamis selama masa penelitian berlangsung, dengan kisaran konsentrasi 5.4-6.1 mg/L (DO), 0.8-1.6 mg/L (PO4), dan 2.1-3.7 mg/L (NO3). Kondisi tersebut, menandakan bahwa perairan pesisir Kecamatan Banyuputih cenderung subur dan layak untuk digunakan sebagai lahan budidaya akuakultur. Pernyataan tersebut juga bisa dilihat dari hasil visualisasi warna pada gambar kesesuaian lahan di peta tematik peneltian. Nilai konsentrasi dari parameter DO (5.4-6.1 mg/L), fosfat (0.8-1.6 mg/L), dan nitrat (2.1-3.7 mg/L) di perairan Kecamatan Banyuputih juga masih sesuai dengan ambang batas baku mutu kualitas air yang diperuntukan untuk budidaya rumput laut. Sehingga dari penelitian ini dapat disimpulkan, dari berbagai gambar peta tematik hasil analisis spasial berdasarkan indeks parameter kimia air yang ada, lokasi perairan Kecamatan Banyuputih sangat layak dan potensial untuk dikembangkan sebagai area budidaya rumput laut yang produktif.
Intensive aquaculture of vaname shrimp (L. vannamei), has been known to be a favorite for aquaculture commodities in Indonesia at the last 2 decades. The purpose of this study was to determine status of financial feasibility and business sensitivity rate in intensive shrimp culture activities. The research method used in this study is a quantitative method. The data analysis used to determine of financial feasibility and business sensitivity in the form of NPV analysis, Net B/C, R/C, IRR, and payback period. Also, an analysis of assumptions about rising feed prices and decreasing production revenues for the level of business sensitivity. The results showed that the shrimp culture business was categorized as feasible and profitable with NPV value of IDR 63,417,262,006, Net B/C 29.11, R/C 2.14, IRR 42.46%, and PP 1.4 years. Sensitivity analysis shows that the business is not so sensitive to the increase of feed prices and decreased revenue, but is very sensitive if both conditions change simultaneously, but are still in the financially feasible category. So, it can be concluded based on NPV, Net B/C, R/C, IRR, and payback period indicator analysis that intensive white shrimp farming is very feasible and profitable to use with a low level of business sensitivity due to feed price fluctuations changes and uncertain operational business revenues.
Shrimp farming with a non-partial harvest system is a cultivation concept to obtain optimal production harvest. The purpose of this study was to determine the business feasibility status of vaname shrimp (L. vannamei) cultivation with a non-partial harvesting system in terms of the ecological and financial aspects from aquaculture. The research method used in this study is a survey research method with data collection techniques based on purposive sampling. The results showed, this non-partial system is ecologically very feasible, because the conditions of the average daily water quality parameter values (DO, pH, temperature, salinity) during the aquaculture period are still above the water quality standard threshold for intensive aquaculture. The business financial feasibility analysis resulted in a profit of IDR 441,307,102,-, BEP Unit 2,062 Kg, BEP Sales IDR 119,995,253,-, R/C of 1.71, Return on Investment of 47.69%, and Payback Period of 2.7 years. Meanwhile based on investment analysis, the Net Present Value of IDR 34,136,139,245,-, Net B/C 11.61, and Internal Rate of Return 37.23%. So, it can be denied, that based on ecological aspects and economic multiplication of aquaculture systems like this can be categorized as very feasible and profitable to be globally developed.
Ikan dalam bentuk segar memiliki sifat mudah rusak serta membusuk sehingga diperlukan pengolahan terhadap ikan segar agar daya simpan lebih tahan lama, lebih mudah di distribusikan, serta lebih mudah dikonsumsi. Pengawetan tradisional pindang cue-besek yang dilakukan oleh masyarakat Desa Jangkar Kabupaten Situbondo merupakan pengolahan pemindangan ikan menggunakan bahan baku ikan tongkol yang ditempatkan pada wadah besek kemudian melalui proses kombinasi penggaraman (menggunakan larutan garam pekat 15%) dan pemanasan (perebusan) pada suhu 100 0C selama 15-30 menit. Penelitian ini dilakukan dengan tujuan untuk menganalisa kelayakan usaha industri pindang cue-besek ikan tongkol pada skala rumah tangga di Desa Jangkar, Kabupaten Situbondo. Analisa kelayakan usaha dilakukan untuk mengukur seberapa efektif/efisien suatu usaha akan menghasilkan laba/keuntungan dengan menggunakan sumber daya (resources) yang ada. Penelitian dilaksanakan pada bulan Februari hingga Maret 2022, dengan lokasi penelitian di Desa Jangkar, Kabupaten Situbondo.Tahapan penelitian dilakukan melalui wawancara langsung (depth interview) terhadap key person (pengolah), menggunakan kuesioner semi-terstruktur yang dilanjutkan dengan kajian kelayakan usaha ikan pindang.Metode analisa untuk uji kelayakan usaha pindang ikan tongkol dilakukan dengan perhitungan nilai keuntungan, rasio R/C, dan nilai ROI.Hasil penelitian menunjukkan bahwa modal usaha yang digunakan oleh usaha pengolahan pindangcue-besek ikan tongkol ialah sebesar Rp. 176.009.000,-/tahun dengan penerimaan sebesar Rp. 240.000.000,-/tahun dan keuntungan yang didapat sebesar Rp. 63.991.000,-/tahun.Hasil perhitungan rasio R/C sebesar 1.3/tahun menunjukkan bahwa usaha pengolahan pindang ikan tongkol tersebut efisien dan layak diterima. Sedangkan untuk nilai ROI sebesar 36.3%/tahun menunjukkan bahwa usaha pengolahan ikan teri krispi menguntungkan untuk terus dikembangkan.
Snack bar adalah jenis makanan selingan yang dibuat dari berbagai macam bahan sehingga dapat digunakan sebagai salah satu produk diversifikasi pangan. Tepung ikan teri sangat potensial dijadikan sebagai bahan tambah snack bar karena memiliki keunggulan dapat dikonsumsi seluruh bagian tubuhnya. Tujuan dari penelitian ini yaitu untuk mengetahui daya terima konsumen secara organoleptik (uji hedonik) sekaligus mengetahui kandungan proksimat snack bar substitusi tepung ikan teri. Terdapat empat formulasi pembuatan snack bar, yakni penambahan tepung ikan teri sebanyak 15% (P1), 25% (P2), dan 35% (P3), dan kontrol (tanpa penambaha tepung ikan teri). Hasil pengujian organoleptik berdasarkan Rancangan Acak Lengkap (RAL) dan uji lanjut Duncan menunjukkan tiga perlakuan penambahan ikan teri berbeda nyata dengan kontrol untuk setiap atribut pengujian (rasa, aroma, warna dan tekstur. Berdasarkan nilai mean atribut rasa, aroma, tekstur dari setiap perlakuan penambahan tepung ikan teri diketahui bahawasanya P2 (penambahan ikan teri 15%) memiliki tingkat kesukaan panelis tertinggi. Analisis proksimat pada penambahan tepung ikan teri 15% (P2) diperoleh kadar air 8,27%, kadar abu 11,06%, kadar protein 18,63%, kadar lemak 15,44%, dan kadar karbohidrat 46,60%. Kata Kunci: Snack bar, Tepung Ikan Teri, Uji Organoleptik, Analisis Proksimat
Character of Amphora sp., has a golden brown color with bioactives such as photosynthetic pigments which have important biological functions for health. This study aims to determine the method of Amphora sp. extraction which is more effective and efficient in producing qualitative and quantitative bioactive, as well as the best antioxidant activity. Amphora sp., extracted with absolute ethanol solvent using different extraction methods, namely sonication (SON), maceration (MAS), and sonication-maceration (SON-MAS). The sonication method showed more effective and efficient results with yield value. The results showed that the SON-MAS method produced the highest yield of 9.8% compared to MAS 8.71% and SON 8.47%. The highest chlorophyll content was seen in the MAS method, total chlorophyll 2.36 ± 0.07 mg/l. Phytochemical content of the SON-MAS and SON methods contained flavonoids, alkaloids, and triterpenoids, while the MAS method showed two compounds, namely alkaloids and triterpenoids. Quantitatively, the phenol and flavonoid content showed that the SON method had a higher value, namely phenol and flavonoids. The best DPPH free radical scavenging antioxidant activity was seen in the SON method with an IC50 value of 745.2 ppm. The extraction method by sonication is considered to have effectiveness and efficiency in producing bioactive Amphora sp.
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