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Efisiensi Ekonomi dan Kelayakan Bisnis pada Sistem Budidaya di Pesisir Kabupaten Sidoarjo, Jawa Timur

Jurnal Aplikasi Manajemen Vol 11, No 4 (2013)
Publisher : Fakultas Ekonomi dan Bisnis Universitas Brawijaya

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Abstract

Abstract: Producing shrimps within ecological carrying capacity and economic feasibility seems to be the goal needed to be achieved in order to bring back Sidoarjo to be one of the biggest districts exporting shrimps. Decision makers, i.e. policy makers and farmers are challenged with the responsibility of planning and conducting aquaculture development in a sustainable way whereby social, ecological and economic goals are simultaneously satisfied. Cobb-Douglas Production Function is one of the methods used to know which input highly affects the shrimp production, continued by Investment Analysis i.e. Discounted Criteria methods that include NPV, Net B/C and IRR to see which system is feasible. As for ecological sustainability, this research uses water quality data translated into Pollution Index as an indicator. And from survey that has been done in Sidoarjo district from May 2013 to October 2013, using Pollution Index analysis show that ponds in Sidoarjo are moderately polluted, the next analysis using regression for Cobb-Douglas Production Function stated that in traditional system production factors that statistically significant arepond area, harvest and pond preparation labour, dissolved oxygen and ammonia. In traditional plus system, pond area, fertilizer, saponin and ammonia seems to be statistically significant. The best shrimp cultivation system would be Traditional Plus Polyculture between shrimp and milkfish that has NPV IDR 6.036.817.617, Net B/C 2,91 and IRR 51% compared to other systems such as Traditional Monoculture, Traditional Plus Monoculture and Traditional Polyculture. Keywords: shrimp farming system, Sidoarjo, pollution index, economic efficiency, business feasibility

EFEKTIVITAS KINERJA MEDIA BIOFILTER DALAM SISTEM RESIRKULASI TERHADAP KUALITAS AIR UNTUK PERTUMBUHAN DAN SINTASAN IKAN RED RAINBOW (Glossolepis incisus Weber)

Jurnal Riset Akuakultur Vol 7, No 2 (2012): (Agustus 2012)
Publisher : Pusat Riset Perikanan, Badan Riset dan Sumber Daya Manusia Kelautan dan Perikanan

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Abstract

Penelitian ini bertujuan untuk mengetahui efektivitas kinerja media biofilter zeolit dan bioball dalam perbaikan kualitas air yang akan meningkatkan pertumbuhan dan sintasan ikan red rainbow (Glossolepis incisus Weber) pada sistem resirkulasi. Wadah percobaan berupa akuarium dengan ukuran 100 cm x 60 cm x 40 cm sebanyak 24 buah, masing-masing ditebar ikan sebanyak 60 ekor/akuarium. Ikan uji yang digunakan dengan bobot awal 0,71 g dan panjang 3,51 cm. Perlakuan yang digunakan dalam percobaan adalah media biofilter: A. zeolit 100%, B. zeolit 75% + bioball 25%, C. zeolit 50% + bioball 50%, D. zeolit 25% + bioball 75%, E. bioball 100%, dan F. kontrol. Pakan yang digunakan adalah pelet komersial, diberikan 5% dari bobot total ikan yang diberikan sebanyak tiga kali (pagi, siang, dan sore). Percobaan disusun dalam Rancangan Acak Lengkap (RAL), dengan enam perlakuan yang diulang sebanyak empat kali. Hasil pengamatan perlakuan media biofilter zeolit 75% + bioball 25% memberikan kualitas air terbaik dengan kualitas baik (kategori IV), dengan efektivitas oksidasi amonia sebesar 95,03±0,31% dan biomassa bakteri non patogen (nitrifikasi) dengan jumlah koloni (8,6±1,91) x 106. Pertumbuhan panjang total dan sintasan yang diperoleh 66,67% (2,34 cm) dan 96,67%.