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Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology

saintek
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Published by Universitas Diponegoro

ISSN : 18584748 EISSN : 25490885 DOI : -

Core Subject : Education,

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SAINTEK PERIKANAN (p-ISSN: 1858-4748 dan e-ISSN: 2549-0885) adalah jurnal ilmiah perikanan yang diterbitkan oleh Jurusan Perikanan Fakultas Perikanan dan Ilmu Kelautan Universitas Diponegoro. Jurnal ini diterbitkan 2 (dua) kali setahun (Februari dan Agustus).

Arjuna Subject : -

Articles 492 Documents

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Chilling of Milkfish (Chanos chanos Forsk.) Using Sea Water Flake Ice and Its Quality Analysis Ratna Ibrahim; Eko Nurcahya Dewi
Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Vol 3, No 2 (2008): Jurnal Saintek Perikanan
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

Nowadays, there are a number of fishing company owners asking about the effects of using sea water flake ice to the fish quality because the research results on sea water flake ice characteristics as well as the suitable ratio between fish and sea water flake ice not much been published. The aim of the research was to evaluate the quality of milkfish, after three days of storage with the ratio between the fish and sea water flake ice of 1:1; 1:2 and 1:3. The experiment design applied was a Completely Randomized Design with three treatments and was done in triplicate. The organoleptic quality data were tested with Friedman test. Data on TVBN and TMA value were tested with analyses of variance. The HSD test was conducted to find out the differences among of the treatments. The different ratio between milkfish and sea water flake ice during three days of storage in styrofoam box did not give any significant influence (P>0,05) to the organoleptic , TVBN and TMA value. The ranges of organoleptic, TVBN and TMA values of the products were 7.2-7.3; 16.07 – 17.28 mg N% and 5.48 – 6.52 mg N% respectively. Keywords : Chilling, sea water flake ice, milkfish ,quality.

PENGARUH PERBEDAAN BAHAN PENYAMAK TERHADAP KUALITAS KULIT IKAN PARI MONDOL (Himantura gerrardi) TERSAMAK The Effect of Different Tanning Materials towards Leather Quality of Tanned Mondol Stingray (Himantura gerrardi) Tika Kusmaryanti; Ratna Ibrahim; Putut Har Riyadi
Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Vol 11, No 2 (2016): SAINTEK PERIKANAN
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

Usaha penyamakan kulit ikan Pari umumnya dilakukan oleh usaha kecil menengah dan hanya menggunakan metode aldehid dengan bahan samak formalin, Selain itu juga belum diketahui kualitas kulit ikan Pari Mondol tersamak yang menggunakan bahan samak krom. Penelitian ini bertujuan untuk mengetahui pengaruh perbedaan penggunaan jenis bahan penyamak terhadap kualitas fisik dan kimiawi kulit ikan Pari Mondol tersamak. Materi penelitian berupa kulit ikan Pari Mondol (Himantura gerrardi) dan bahan samak. Penelitian dilakukan dengan metode eksperimental laboratoris. Rancangan percobaan yang digunakan adalah Rancangan Acak Kelompok dengan perlakuan bahan samak yang berbeda, yaitu formalin, krom, dan kombinasi. Masing-masing perlakuan diulang tiga kali. Variabel mutu yang diamati adalah kekuatan tarik, kemuluran, kekuatan sobek, ketebalan, suhu kerut, ketahanan bengkuk (bengkok), pH dan kadar air. Data dianalisis menggunakan ANOVA dan perbedaan diantara perlakuan diuji dengan Uji Tukey. Hasil penelitian menunjukkan bahwa perbedaan bahan penyamak menyebabkan pengaruh nyata terhadap nilai kekuatan tarik, kekuatan sobek dan ketebalan tetapi tidak memberikan pengaruh nyata terhadap nilai pH, kadar air dan ketahanan bengkuk. Produk yang terbaik yaitu kulit ikan Pari Mondol yang disamak dengan bahan samak kombinasi antara krom dan mimosa, yang sebagian persyaratan mutunya sudah memenuhi persyaratan mutu kulit ikan Pari tersamak menurut SNI 06-6121-1999. Kata kunci: Kualitas, kulit Ikan Pari, penyamak ABSTRACT Meanwhile the quality of Stingray tanned leather which using chrome tannin materials was not yet known. This research aims to determine the effect of different types used tannin materials towards physical and chemical quality of Stingray leather quality. The materials used in this research isStingray (Himantura gerrardi) skin and tannin materials. The study was conducted with laboratory experimental method. The experiments was designed according to the Randomized Block Design with different tanning materials (formalin, chrome, and chrome-combination). Each treatment was done with in triplicate. The quality variables that measured were tensile strength, elongation, tear strength, thickness, shrinkage temperature, bent resistance, pH and moisture content. Data were analyzed using Analysis of Variance. To find the difference between treatments, the data were tested with Honestly Significant Difference Test . The results showed that various of tannin materials gave significant effects to the values of tensile strength, tear strength and thickness however there was not any significant effect on bent resistance, moisture content and pH value. The best product were Stingray tanned leather with chrome-combination tannin material, which partially quality requirements has been comply with Stingray tanned leather quality requirements according to SNI. Keywords: Quality, stingray skin, tanning

Leading Commodity Analysis of Capture Fisheries in Karimunjawa National Park Irnawati, Ririn; Simbolon, Domu; Wiryawan, Budy; Murdiyanto, Bambang; Nurani, Tri Wiji
Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Vol 7, No 1 (2011): Jurnal Saintek Perikanan
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

Karimunjawa National Parks (TNKJ) is a marine conservation area which has 111.625 ha area with the majority ofresidents work as fishermen. Utilization of traditional fisheries zone intended for fishing activities. Therefore, fishing activities in TNKJ should be conducted in accordance with the principles of conservation. The aim of this study was to determine the winning fish fishery commodities in TNKJ. The selection of commodities was done by using comparative performance index (CPI). Analysis of potential fish resources is done with bioeconomic model. Optimizing the amount of fishing equipment was done by using linear goal programming (LGP). Feasibility of the business conducted by financial analysis. The results showed commodities TNKJ reef fisheries are pompano, and for pelagic fisheries are anchovies. Reef fish resource potential of 174 tons / year and pelagic fish of 22 069 tons / year. Appropriate fishing technologies for reef fisheries is the fishing rod elongation and traps, while for the pelagic fishery and gillnet fishing minnows on trolling lines. Financial analysis shows that all fishing gear is still viable to continue the effort. Key words: Selection commodities, fishing activities, Karimunjawa National Parks

PENGGUNAAN RESERVOIR TERHADAP PERFORMA UDANG WINDU (Penaeus monodon Fabricius) YANG DIBUDIDAYAKAN SECARA TRADISIONAL (The Use of Reservoirs to the Performance Tiger Shrimp (Penaeus monodon Fabricius) on Culture Traditional Pond) Titik Susilowati; Tristiana Yuniarti; Fajar Basuki
Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Vol 13, No 1 (2017): SAINTEK PERIKANAN
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

Penelitian ini bertujuan untuk mengetahui produksi biomassa, kelulushidupan udang windu (Penaeus monodon Fabricius) dan kelimpahan fitoplankton yang dibudidayakan di tambak tradisional dengan reservoir dan tanpa reservoir. Penelitian dilakukan dengan menggunakan metode deskriptif Padat tebar udang windu 2 ekor/m2. Pemeliharaan dilakukan selama 3 bulan (ukuran konsumsi). Data produksi udang dan kelimpahan plankton dianalisis dengan Uji-T dan data kualitas air yang diperoleh dianalisis secara deskriptif. Hasil penelitian menunjukkan bahwa produksi udang windu pada tambak dengan menggunakan reservoir dan tanpa reservoir berbeda nyata (p<0.050) dengan nilai 48.8 ± 25.90 kg pada tambak dengan menggunakan reservoir dan 9 ± 7.31 kg pada tambak tanpa reservoir. Sedangkan kelimpahan fitoplankton tidak menunjukkan perbedaan nyata (p > 0.05) dengan nilai 16.37 ± 4.24 sel / L untuk tambak reservoir dan 15.73 ± 2.20 sel / L untuk tambak tanpa reservoir. Kualitas air media tambak dengan reservoir yaitu suhu: 26.8 – 31.0oC. DO : 1.25-8.86 mg/L., pH air : 7.5-9.2., kecerahan : 25-47.5 cm., kedalaman air : 75-95 cm dan nilai salinitas 5-21 ppt. Sedangkan tambak tanpa reservoir suhu: 24.7-32.4oC., DO : 1.25-8.46 mg/L. pH air : 8.0-9.1. kecerahan : 25.5-40 cm., kedalaman air : 70-90., salinitas: 9-18 ppt. Berdasarkan hasil penelitian dapat disimpulkan bahwa penggunaan reservoir pada budidaya udang windu tradisional dapat meningkatkan produksi udang monodon (P. monodon Fabricius) The aim of the research is determining the biomass production of tiger shrimp (P. monodon .F) and abundance of phytoplankton which is maintained in a traditional pond with water reservoir and without using water reservoir. The method that is used in this deskriptif Two treatment. namely traditional pond with water reservoir and without using water reservoir. Rearing the shrimp was done until 3 mount. Data biomass production shrimp were analysed with T-test and data water quality were analyzed descriptively. The result shows that the pond cultivation using water reservoir and without water reservoir significant effect ( p < 0.05) on the biomass production of tiger shrimp to the ponds by using a reservoir with a mean 49.8 ± 23.90 kg and 9 ± 6.31 for pons without a reservoir. While the pond using water reservoir and without reservoir have not significant effect ( p > 0.05) on the phytoplankton abundance of 16.37 ± 4.24 cell / L for the pond by using a reservoir and 15.73 ± 2.20 cell / L for the pond without a reservoir. Water quality for temperature: 26.8 – 31.0oC., DO : 1.25-8.86 mg/L., pH : 7.5-9.2., brightness : 25-47.5 cm., depth : 75-95 cm and salinity 5-21 ppt for ponds by using a reservoir and temperate 24.7 – 31.0oC., DO : 1.25-8.46 mg/L., pH : 8.0-9.1., brightness : 25.5-40 cm., depth : 70-95 cm and salinity 9-18 ppt without reservoir. From the data conclude that traditional pond with water reservoir can improve the biomass production of tiger shrimp to the pond.

EFEK PERBEDAAN LUAS FREE SURFACE MUATAN CAIR TERHADAP GERAKAN ROLLING MODEL KAPAL (Influence of free surface area of liquid cargo towards rolling motion of a ship model) Yopi Novita; Ariestio Dwi Ramadhan; Mohammad Imron
Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Vol 8, No 2 (2013): Jurnal Saintek Perikanan
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

Kapal pengangkut ikan hidup adalah merupakan kapal pengangkut yang khusus digunakan untuk mengangkut ikan-ikan dalam kondisi hidup. Oleh karena itu, muatan utamanya adalah air dan ikan. Ditinjau dari jenis muatannya, maka muatan kapal pengangkut ikan hidup dikategorikan sebagai jenis muatan (cair) liquid. Sifat muatan cair adalah akan selalu berubah bentuk mengikuti bentuk wadah yang ditempatinya, sehingga titik berat muatan cair akan selalu bergeser. Kondisi ini dikarenakan muatan cair memiliki permukaan bebas (free surface). Free surface memiliki efek yang dapat mempengaruhi stabilitas kapal pengangkut muatan cair. Pergeseran titik berat muatan itulah yang menyebabkan kapal bermuatan cair menjadi berkurang kestabilannya jika dibandingkan dengan kapal yang bermuatan padat. Oleh karena itu perlu upaya untuk mengurangi efek free surface terhadap stabilitas kapal. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh luasan free surface terhadap kualitas gerakan rolling model kapal. Metode penelitian dilakukan dengan cara mengamati gerakan rolling model kapal sebagai efek dari keberadaan palka dengan beberapa perlakuan berbeda dan pergerakan free surface-nya. Dari hasil penelitian disimpulkan bahwa nilai rata-rata rolling period model kapal dengan luas free surface yang berbeda adalah berbeda. Rolling period terbesar dihasilkan oleh model palka yang memiliki free surface terluas. Kata kunci : free surface, stabilitas, rolling periodLife fish carrier is one kind of ship that designed for transporting life fish. This kind of ship bring most water in its hold tank beside life fishes, so that the cargo can be categorized as liquid cargo. As it is known that shape of liquid cargo is always folllow the shape of the container where it is laden, consequently the centre of gravity (CG) is always shifted due to free surface effect. The shifted of CG may decrease stability, so it is needed some effort to ovecome the free surface effect in this kind of ship. The objective of this research was to know the influence of free surface area towards quality of rolling motion of ship models. The research was carried out in a laboratory and direct observation to roling motion of some ship models were observed with variation of treatments. The result showed that average of rolling period was influenced by area of free surface, the higher rolling period was produced by the ship model with widest free surface area. Key words : Free surface, stability, rolling period

POTENSI PANKREAS KAMBING SEBAGAI BATING AGENT ALAMI TERHADAP KARAKTERISTIK KULIT IKAN NILA (Oreochromus niloticus) TERSAMAK(Pancreas Potential Of Goat As A Natural Bating Agent On Tilapia (Oroeochromus niloticus) Leather) Muhammad Aziz Cahyana; Ulfah Amalia; Slamet Suharto
Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Vol 14, No 2 (2019): SAINTEK PERIKANAN
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

Pankreas kambing mengandung enzim proteolitik yang berpotensi sebagai bating agent dalam proses penyamakan kulit.Tujuan penelitian ini adalah mengetahui pengaruh penggunaan bating agent dari pankreas kambing terhadap karakteristik fisik kulit ikan nila tersamak dan mengetahui konsentrasi terbaik dari penggunaan bating agent pankreas kambing. Materi yang digunakan dalam penelitian ini adalah kulit ikan niladan pankreas kambing segar. Metode penelitian ini bersifat experimental laboratories menggunakan Rancangan Acak Lengkap (RAL) dengan tiga kali pengulangan dengan 4 konsentrasi bating agent yaitu (0,5%, 1%, 1,5% dan 2%) kulit ikan tersamak diuji dengankekuatan tarik, kemuluran, kekuatan sobek, kadar krom oksida, dan suhu kerut. Hasil penelitian menghasilkan bahan bating agent berpengaruh terhadap karakteristik kulit ikan tersamak (P<0,05). Konsentrasi bating agent sebesar 2% memberikan hasil yang terbaik sebagai berikut: kekuatan tarik 1300,45 N/cm², kemuluran 87,70%, kekuatan sobek 273,90 N/cm², kadar krom oksida 3,46 %, dan suhu kerut 99,75°C. Kulit ikan nila tersamak hasil penelitian semua perlakuan memenuhi persyaratan SNI 06-4586-1998 kecuali untuk parameter kemuluran tidak memenuhi syarat. Goat pancreas, containing proteolytic enzymes which the potential as a bating agent in the process of tanning the skin. The purpose of this study was to determine the effect of using bating agent from goat pancreas on the physical characteristics of tilapia skin and knowing the best concentration of using the goat pancreatic agent. The material used in this study is the skin of tilapia and fresh goat pancreas. This research method is experimental laboratories using Completely Randomized Design (CRD) with three repetitions with 4 concentrations of bating agent namely (0.5%, 1%, 1.5% and 2%) the skin of tanned fish is tested with tensile strength, elongation, tear strength, chrome oxide content, and wrinkle temperature. The results of the study resulted in bating agent material affecting the characteristics of tanned fish skin (P <0.05). Bating agent concentration of 2% gave the best results as follows: tensile strength 1300.45 N / cm², elongation 87.70%, tear strength 273.90 N / cm², chrome oxide content 3.46%, and wrinkle temperature 99, 75 ° C. The results of this study produced a total nitrogen of 2.65% of the goat pancreas which has great potential to be used as bating material. The skin of tanned tilapia from the results of this study meets the requirements of SNI 06-4586-1998 except for elongation parameters that do not meet the requirements.

KUALITAS PERAIRAN SUNGAI BANGER PEKALONGAN BERDASARKAN INDIKATOR BIOLOGIS Siti Rudiyanti
Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Vol 4, No 2 (2009): Jurnal Saintek Perikanan
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

ABSTRAKPembuangan limbah pabrik/industri, pertanian, maupun limbah domestik dapat menyebabkan degradasi kualitas air. Kualitas air dapat ditentukan melalui studi analisis biologi menggunakan biota akuatik fitoplankton sebagai bioindikator. Penelitian dilaksanakan di sungai Banger Pekalongan pada bulan Agustus - September 2006, bertujuan menilai kualitas perairan berdasarkan indikator biologis. Stasiun penelitian berjumlah 3 stasiun, stasiun A adalah daerah pangkal sungai Banger yang merupakan percabangan dan mendapatkan masukan air dari sungai Pekalongan, dimana di sekitar DAS Pekalongan terdapat aktivitas industri tekstil skala rumah tangga, stasiun B merupakan daerah pembuangan limbah beberapa industri tekstil, dan stasiun C adalah daerah sesudah area industri tekstil. Parameter biologi yang diukur meliputi Indeks Keanekaragaman (H`), Indeks Kemerataan (E), dan Koefisien Saprobik (X). Secara umum proporsi terbesar penyusun komunitas fitoplankton adalah kelas Bacillariophyceae dan Chlorophyceae. Kelimpahan individu fitoplankton berkisar antara 8535 - 22.972 individu/L. Indeks keanekaragaman berkisar antara 1,945 - 2,540 dan koefisien saprobik berkisar antara 0,17 - 1,31. Berdasarkan pendekatan indeks keanekaragaman dan koefisien saprobik, tingkat pencemaran dan kualitas perairan sungai Banger termasuk dalam kategori tercemar ringan sampai sedang.Kata kunci : Fitoplankton, indeks keanekaragaman, koefisien saprobik, kualitas airABSTRACTDisposal wastes from industrial, agricultural and domestic could degrade water quality. Water quality can be assessed by biological analysis using aquatic biota as a bio-indicator. Research took place at Banger River Pekalongan on August to September 2006, with the aims to examine water quality based on biological indicators. There are three research stations : station A is at the upland of the river where intake waters is from a branch of Pekalongan river in catchment’s areas of home based textile industries. Station B is in surrounding area where the textile industries dispose their waste; and station C is in the following area after the textile industries. Biological parameters that be calculated include diversity index, evenness index and saprobic coefficient. In general the biggest proportion of phytoplankton community is from class of Bacillariophyceae and Chlorophyceae. Phytoplankton individual abundance is around 8535 to 22.972 indv/l. Diversity index is around 1.945 to 2.540 and saprobic coefficient is 0.17 to 1.31. Based on diversity index and saprobic coefficient approaches, pollution level and water quality of the Banger River is categorized in little to middle pollution.Key Word : Phytoplankton, diversity index, saprobic coefficient, water quality

INFESTASI DAN INTENSITAS EKTOPARASIT PADA UDANG VANAME (Litopenaeus vannamei) DENGAN UKURAN BERBEDA PADA TAMBAK DENGAN DASAR BETON Gunanti Mahasri; Putri Desi Wulan Sari; Nafis Putra Laksana Cholil; Siti Hamidah
Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Vol 15, No 2 (2019): SAINTEK PERIKANAN
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

Penelitian bertujuan untuk mengetahui infestasi dan intensitas ektoparasit pada benih udang vaname dengan ukuran yang berbeda dan di pelihara pada tambak dengan dasar beton. Penelitian ini merupakan penelitian survey dimana pengambilan sampel dilakukan secara acak pada lokasi dan waktu yang berbeda, jumlah sampel yang di ambil sebanyak 60 ekor benih dari masing – masing lokasi pengambilan sampel. Hasil penelitian menunjukkan bahwa terdapat perbedaan yang nyata (p<0,05) infestasi dari ketiga ektoparasit pada kedua ukuran benih udang vaname yang berasal dari hatchery dan tambak penggelondongan. Intensitas ektoparasit tertinggi pada udang vaname berukuran Post Larva (PL40-50) adalah Zoothamnium ekor yang masuk dalam kategori sangat parah. Sedangkan, intensitas ektoparasit Epistylis masuk dalam kategori sedang. Intensitas ektoparasit pada benih udang berukuran Post Larva (PL11-16) yaitu Zoothamnium dan Vorticella yang masuk dalam kategori sedang dan ektoparasit Epistylis yang masuk dalam kategori rendah. Berdasarkan analisis perbedaan intensitas ektoparasit menunjukkan bahwa terdapat perbedaan yang nyata pada ektoparasit Zoothamnium dan Epistylis dari kedua ukuran benih udang vaname, hasil itu berdasarkan perhitungan nilai signifikan yaitu sebesar (p<0,05). Sedangkan pada ektoparasit Vorticella tidak terdapat perbedaan yang nyata dari kedua ukuran benih udang vaname, hasil tersebut berdasarkan perhitungan nilai signifikan (p>0,05). The study aimed to determine the infestation and intensity of ectoparasites on white shrimp of different sizes and maintained on concrete bases. This research is a survey research where sampling was carried out randomly at different locations and times, the number of samples taken as many as 60 shrimps from each sampling location. The results showed that there were significant differences (p <0.05) of the infestations of the three ectoparasites in both sizes of white shrimp from hatcheries and log farms. The highest intensity of ectoparasites in post larvae (PL40-50) sized white shrimp is Zoothamnium which in the very severe category. Meanwhile, the intensity of Epistylis ectoparasites in the moderate category. The intensity of ectoparasites in Post Larvae sized shrimp (PL11-16), namely Zoothamnium and Vorticella, were included in the moderate category and Epistylis ectoparasites were in the low category. Based on the analysis of differences in ectoparasitic intensity, it was shown that there were significant differences in the Zoothamnium and Epistylis ectoparasites from the two sizes of white shrimp, the results of which were based on the calculation of significant values of (p <0.05). Whereas in Vorticella ectoparasites there was no significant difference between the two sizes of white shrimp, the results were based on the calculation of significant values (p> 0.05).

Production Technique of Female Tilapia (Oreochromis niloticus) Brood Stock at Verification Level Functional Male (XX) Tristiana Yuniarti; Sofi Hanif; Teguh Prayoga; Suroso Suroso
Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Vol 5, No 1 (2009): Jurnal Saintek Perikanan
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

A technology for producing tilapia monosex female brood stock was needed in order to fulfill the female brood stock for YY male brood stock. The first step was producing XX male brood stock. A monosex female brood stock generation could be obtained if XX male brood stock population was mated with the female. The objective of this activity was to obtained XX male brood stock veryvication result. The result showed that 2 XX male were obtained from 38 fungtional male brood stocks. This could be seen that from female offspring > 95% only 2 brood stocks, i.e. brood stock code 460041352B qnd 460966737A Key word: Tilapia, breeding programe, sex reversal, female offspring

FLUKTUASI KANDUNGAN AMONIA DAN BEBAN CEMARAN LINGKUNGAN TAMBAK UDANG VANAME INTENSIF DENGAN TEKNIK PANEN PARSIAL DAN PANEN TOTAL Fluctuations of Ammonia and Pollution load in Intensive Vannamei Shrimp Pond Harvested Using Partial and Total Method Bayu Romadhona; Bambang Yulianto; Sudarno Sudarno
Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Vol 11, No 2 (2016): SAINTEK PERIKANAN
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

Kemajuan teknologi budidaya udang di Indonesia semakin pesat, seiring dengan berkembangnya budidaya Udang Putih Vaname (Litopenaus vannamei), sebagai komoditas ekonomis di tambak selain udang windu dan bandeng. Budidaya intensif Udang Vaname dicirikan dengan padat penebaran benih tinggi dan penggunaan pakan tambahan. Manajemen pakan yang kurang baik, berakibat pada timbulnya sisa pakan, secara perlahan-lahan akan meningkatkan kadar bahan pencemar dan menurunkan kualitas air tambak. Upaya yang dikembangkan untuk mengurangi masukan nutrien dari pakan selama budidaya udang vaname intensif adalah metode panen parsial, yaitu melakukan pemanenan udang secara bertahap (parsial) saat proses budidaya berlangsung. Tujuan dari penelitian ini adalah untuk mengevaluasi fluktuasi amoniak, menganalisa sumbangan beban cemaran amoniak ke lingkungan serta mengkaji kelayakan usaha budidaya udang vaname intensif dengan teknik panen parsial dan panen total. Panen parsial dilaksanakan umur 65 hari pada petak 2B, sedangkan panen total petak 2A dan 2B umur 80 hari pemeliharaan. Hasil yang diperoleh kandungan amoniak di akhir periode pemeliharaan petak 2A (panen total) dan petak 2B (panen parsial) adalah 0,120 mg/l dan 0,050 mg/l dengan nilai indeks kualitas air Prakash yang sama yaitu 51,11 kriteria kualitas air sedang. Sumbangan beban cemaran amoniak terhadap lingkungan petak 2A sebesar 7,667 kg/ha/th, petak 2B sebesar 3,164 kg/ha/th. Penilaian kelayakan ekonomi dari biomassa Udang Vaname yang dipanen secara total dan parsial. Hasil perhitungan teknik panen total nilai NPV Rp 88.448.362: IRR 27,09 ; B/C 2,11, teknik panen parsial NPV Rp 426.601.399 ; IRR 69,02: B/C 2,30. Kedua teknik panen mencerminkan usaha layak untuk dilanjutkan. Teknik panen parsial. mampu meminalkan sumbangan beban cemaran ke lingkungan serta memberikan keuntungan usaha lebih besar Rp 9.063.000/siklus/petak dibandingkan teknik panen total. Perlu adanya upaya pengolahan buangan air limbah di akhir pemeliharaan sebelum dibuang ke perairan umum agar memenuhi syarat baku mutu effluent. Technological development of shrimp farming in Indonesia is growing rapidly, along with the development of white shrimp(Litopenaus vannamei) aquaculture, which is an economically viable commodity in pond culture besides tiger prawn and milkfish. Vanamei intensive shrimp aquaculture is characterized by a high stocking density of seeds and the use of additional feed. Poor feed management will result in the increase of food residue and gradually increases the levels of pollutants that degrade the water quality. Efforts to reduce nutrient inputs of feed for shrimp farming is partial harvesting method by harvesting shrimp in stages (partial) during the period of culture. The purpose of this study was to evaluate the fluctuation of ammonia, analyzing environmental contaminant load and study the feasibility of intensive shrimp farming of vanamei with partial harvesting techniques and the total harvest. Partial harvest was held at the age of 65 days for plots 2B, while the total harvest was done at plots 2A and 2B at 80 days. The results of ammonia concentration at the end of the culture period 2A plots (total harvest) and plots 2B (partial harvest) was 0.120 mg / l and 0.050 mg / l respectively, with similar Prakash water quality index of 51.11. Ammonia contamination load in plots 2A was 7,667 kg / ha/years, and plots 2B was 3,164 kg / ha/years. Results of the NPV value of total harvest was Rp 88,448,362: IRR 27.09; B / C of 2.11 whereas for partial harvesting techniques NPV Rp 426 601 399; IRR 69.02: B / C 2.30. Partial method techniques of vanamei harvest can be minimalizing contaminant load in environmental and was more feasible because it provides greater profit of Rp. 9.063 million / cycle / plot. Efforts are required to discharge wastewater treatment at the end of the culture period before being released into the surrounding environment in order to meet the required effluent quality standarts.

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