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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 402 Documents

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Isolasi Dan Karakterisasi Bakteri Asam Laktat Dari Usus Udang Penghasil Bakteriosin Sebagai Agen Antibakteria Pada Produk-Produk Hasil Perikanan Romadhon Romadhon; Subagiyo Subagiyo; Sebastian Margino
Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Vol 8, No 1 (2012): Jurnal Saintek Perikanan
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

Lactid Acid bacteria are capable of fermenting sugars or carbohydrates to produce lactic acid in large numbers. The characteristics of lactic acid bacteria in general are cells reacted positively to the Gram stain, catalase react negatively and do not form spores. And fermentation of glucose would result Iaktat acid. Isolation of lactic acid bacteria carried in the intestines of three species of shrimp that Tiger Shrimp (Penaeus monodon), shrimp Seker (Metapenaopsis sp.), Guts White shrimp (Penaeus merguensis). Selection of bacteriocin -producing lactic acid bacteria were in a qualitative and semi-quantitative (pitting) in MRS medium. Selected isolates were identified by morphological characteristics, biochemical, physiological, A number of 209 isolates were isolated from three species of shrimp. The results of the qualitative selection there were 54 isolates produced bacteriocins. The results of the quantitative selection of 54 isolates produced 24 fine isolates. From the 24 isolates there are 2 isolates seed SFE-7 (33) and P12A (25). Characteristics of seed isolates had morphological characteristics of spherical shape, cell arrangement tetrad, gram positive, negative motility. While the results of the biochemical approach to gram-negative, catalase negative, homofermentative (no gas in the fermentation of glucose), can ferment D-Galactose, D-Glucose, D-mannose, D-lactose. Physiological approaches to isolate growth SFE-7 (33) and P12A (25) can be generated that both isolates able to live in the range of 4 ° C to 50 ° C, in the range of pH between 4-10, and able to grow at levels of 5-10% NaCl . Based on these characteristics can be inferred featured isolates was Pediococcus acidilactici Key words: Lactid Acid Bacteria, intestine of shrimp, Pediococcus acidilactici

PENINGKATAN PRODUKSI BIOMASSA SIDAT (Anguilla bicolor) MELALUI PEMANFAATAN FERMENTASI PAKAN DAN TEPUNG CACING TANAH (Lumbricus sp) (Production increase of Anguila Biomass by using food fermentation and earth worms flour) Diana Chilmawati; Suminto Suminto; Tristiana Yuniarti
Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Vol 12, No 2 (2017): SAINTEK PERIKANAN
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

Sidat (Anguilla bicolor) merupakan jenis ikan yang pertumbuhan lambat, karena kemampuan daya cerna dan efisiensi pemanfaatan pakan sidat rendah. Salah satu usaha untuk mempercepat laju pertumbuhannya yaitu dengan memfermentasikan pakan buatan dan penambahan tepung cacing (Lumbricus sp.) untuk memperbaiki kandungan nutrisi pakan sehingga pertumbuhan sidat akan meningkat. Penelitian ini bertujuan untuk mengkaji pengaruh dan menentukan kombinasi fermentasi pakan buatan dan penambahan tepung cacing tanah yang memberikan pertumbuhan, efisiensi pakan, dan kelulushidupan sidat (A. bicolor) terbaik. Elver sidat yang digunakan adalah 320 ekor dengan berat rata-rata 15±1,2 g yang dibudidayakan dalam enam belas akuarium berukuran 80 l yang diisi 40 L air dan diaerasi. Kepadatan awal 20 ekor/akuarium. Pergantian air dilakukan setiap hari 10% dari total air dan dilakukan pemberian pakan 5% dari biomassa sidat dengan frekuensi pemberian pakan 3 kali sehari, pakan yang diberikan mempunyai kadar protein >50%. Pola rancangan yang digunakan adalah Rancangan Acak Lengkap (RAL) dengan 4 perlakuan dan 4 ulangan. Perlakuan yang diberikan adalah A, B, C, dan D masing-masing ditambahkan dengan tepung cacing tanah 0%, 5%, 10%, dan 15% dari total pakan yang diberikan dalam pakan buatan yang telah difermentasi. Variabel yang diukur adalah PER, SGR, EPP, FCR, dan SR. Hasil penelitian menunjukkan bahwa fermentasi pakan buatan dan penambahan tepung cacing tanah dalam pakan berbentuk pasta berpengaruh nyata (p<0,05) terhadap pertumbuhan (RGR) ,efisiensi pakan (EPP) dan rasio konversi pakan (FCR) namun tidak berpengaruh nyata terhadap kelulushidupan (SR) sidat (A. bicolor) dan kombinasi fermentasi pakan buatan dan penambahan tepung cacing tanah dengan dosis 5% (perlakuan B) memberikan pertumbuhan, efisiensi pakan, dan rasio konversi pakan sidat (A. bicolor) terbaik. Kualitas air pada media pemeliharaan masih pada kondisi layak untuk budidaya sidat. The elver of Anguilla bicolor is the kind of fish that the late growth, due to low in digestability and inefficiency to the feed utilization. One of the solutions to accelerate the growth rate is by adding earthworm powder (Lumbricus sp.) and the fermented artificial feed to improve feed nutrition content so the increasing growth. The obyective of this research was to know the effect of fermented artificial feed and the addition of earthworm powder in pasta artificial feed on the best of growth, feed utilization, and survival rate of A. bicolor in the culture. Elvers of 320 individuals with an average weight of 15 ± 1.2 g were cultivated in sixteen of the circular aquarium with 80 L in volume. Every aquarium was added 40 L of tap water and weekly aeration with initial density of 20 individuals/aquarium. Everyday was changed 10 % of tap water and added the pasta artificial feed 5 % of elver body weight for three time feeding habit per day with protein content of >50%. The treatments were designed by using a completely randomized design (CRD) with 4 treatments and 4 replicates. The culture of treatments A was not added earthworm powder in the fermented pasta artificial feed. Treatments of B, C, and D were added by earthworm powder of 5 %, 10 %, and 15 % in the fermented pasta artificial feed, respectively. The variables measured were PER, SGR, EPP, FCR, and SR. The result showed that the artificial feed with different protein levels highly significant influenced (P<0,05) on the RGR, EPP, and FCR, and there was no significant influences (P>0,05) on the SR of elver. The treatment B (5 % of earthworm) however showed the best one treatment dosage for elvers growth rate than the other treatments. Water quality in culture media was still in decent condition for the cultivation of eels.

Site Selection of Ecotourism Development Frida Purwanti
Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Vol 5, No 2 (2010): Jurnal Saintek Perikanan
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

This paper discusses the application of Criterium Decision Plus program in decision making process for selection of ecotourism development area. The selection was build based on some variable collected from stakeholders which were constructed in hierarchy system and be evaluated by an expert to decide the potential location using pairwise comparison. The result showed that for ecotourism development, the significance factor is government policy; the importance actor is government; the importance goal is increasing income and priority location is coastal area. Keywords : Ecotourism, Decision Making

PEMETAAN WILAYAH PENANGKAPAN IKAN TERI (Stolephorus sp) BERDASARKAN DATA SATELIT OCEAN COLOR DI PERAIRAN KABUPATEN BATANG (Mapping of Anchovy (Stolephorus sp) Fishing Ground based on Ocean Color Satellite Data in the Batang Regency Waters) Rosyid Paundra Gamawan; Suryanti Suryanti; Teja Arief Wibawa
Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Vol 13, No 2 (2018): SAINTEK PERIKANAN
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

Kelimpahan Ikan Teri banyak ditemukan di perairan laut Kabupaten Batang saat musim timur. Penggerak ekonomi masyarakat pesisirnya pada musim timur tergantung hasil tangkapan Ikan Teri. Kegiatan penangkapan Ikan Teri oleh nelayan kurang efisien dalam hal waktu dan biaya operasional. Penginderaan jauh merupakan teknologi menghasilkan data observasi secara spasial dan time series. Penelitian ini bertujuan untuk mengetahui kelimpahan plankton dominan dan persebaran Ikan Teri di perairan Kabupaten Batang pada musim timur. Penelitian ini dilaksanakan pada bulan Juli - September 2017. Variabel penelitian yang diteliti adalah adalah suhu permukaan laut, klorofil-a, kelimpahan fitoplankton, kelimpahan zooplankton dan hasil tangkapan Ikan Teri. Pengambilan data kelimpahan plankton menggunakan nansen water sampler. Pengambilan data hasil tangkapan Ikan Teri dengan mencatat hasil tangkapan setiap tripnya. Data SPL dan klorofil-a diunduh dari website Ocean Color. Kedua data tersebut berasal dari rerata nilai masing-masing sensor harian (Terra MODIS, Aqua MODIS dan SNPP VIIRS) yang dikomposit dari tiga hari yaitu, data satu hari sebelum waktu penangkapan, saat penangkapan, dan satu hari setelah penangkapan. Semua data variabel diuji outlier, uji normalitas, tranformasi data, dan uji kolinearitas. Data hasil 4 uji tersebut digunakan untuk membuat persamaan pemodelan rantai makanan Ikan Teri, yaitu persamaan kelimpahan fitoplankton, kelimpahan zooplankton dan kelimpahan Ikan Teri. Persamaan tersebut digunakan untuk menduga pesebaran Ikan Teri. Hasil kelas fitoplankton yang paling dominan adalah Bacillariophyceae, lalu zooplankton adalah Copepoda. Persebaran Ikan Teri bulan Juni 2017 menyebar rata dari timur ke barat perairan Kabupaten Batang. Persebaran Juli 2017, lebih cenderung di bagian timur perairan Kabupaten Batang. Persebaran Agustus 2017, persebaran Ikan Teri yang hampir rata di setiap perairan Kabupaten Batang. Anchovy abundance is commonly found in the marine waters of Batang Regency during the east season. The economy of coastal communities in the east season depends on the catch of Anchovy. Fishing activities by fishermen are less efficient in terms of time and operational costs. Remote sensing is a technology to produce spatial observation data and time series. This study aims to determine the abundance of plankton (phytolankton and zooplankton) and to determine the distribution of Anchovy fishing ground in the eastern seasons of 2017 based on food chains and oceanographic satellite imagery observations. This research was conducted in July-September 2017. The research variables are sea surface temperature, chlorophyll-a, phytoplankton and zooplankton abundance and fish catch. Plankton abundance is taken by nansen water sampler, while the Anchovy catch data is taken from the catch . Data of sea surface temperature and chlorophyll-a are obtained from Ocean Color website. They are average value of each daily sensor (Terra MODIS, Aqua MODIS and SNPP VIIRS) compiled from three days (one day before taking in situ data, the day taking in situ data, and one day after taking in situ data). Variable data was tested outlier, normality test, data transformation, and cholinearity test. Furthermore, the result data of the four tests are used to make some modeling equations of Anchovy food chain, thats are phytoplankton abundance equation, zooplankton abundance and Anchovy abundance. The equation of Anchovy abundance is used to estimate the distribution of anchovies. This research showed that dominant phytoplankton species at Anchovy fishing ground in Batang Regency is Bacillariophyceae, then, the zooplankton is Copepoda. Distribution of Anchovy at Batang Regency waters in June 2017 is spread evenly from east to west of waters; in July 2017 is wider spread in the eastern part of the waters; in August 2017 is almost equally in each of the waters.

Biological Aspects of Goatfish (Upeneus spp) on Demak Waters Suradi Wijaya Saputra; Prijadi Soedarsono; Gabriela Ari Sulistyawati
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

Goatfish is one of the fishery resources which become a target species on demersal capturing activity with cantrang (Danish seine). The objectives of this research were to know biological aspect, i.e. sex ratio, growth, fecundity, average of length capture, and length of first maturity (Lm). The method used in this reseach was description survey. While collecting sample method by using a systematic random sampling method. Samples were held in TPI Morodemak, on Maret to April 2006. The result shaw that sex ratio was 1:1, and growth was negative allometric. Gonad maturities were dominated on level I. Total of fecundity range from 44.320 to 2.455.286 eggs. Avarage of length capture of male was 157 mm, and Lc and female was 164 mm. Length of first maturity of male was 216,44 mm, and female was 219,71 mm. Key words : Goatfish, biological aspects, Demak waters

APLIKASI GPS DALAM PENENTUAN POSISI PULAU DI TENGAH LAUT BERDASARKAN METODE TOPONIMI (STUDI KASUS PULAU MOROTAI Gps Application for Determining the Island Position on the Sea Based on the Toponymy Method (Case Study for Morotai Island and Its Surrounding) Yulius Yulius; H.L Salim
Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Vol 9, No 2 (2014): JURNAL SAINTEK PERIKANAN
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

Pengelolaan sumberdaya kelautan telah menjadi perhatian dalam kaitannya dengan pembangunan berkelanjutan. Dilain pihak teknologi mengenai pendataan unsur-unsur laut menjadi sangat penting artinya dalam pengelolaan sumber daya wilayah. Guna mendukung pengelolaan wilayah laut dan unsur-unsur geografi laut (pulau) di wilayah kedaulatan Indonesia, diperlukan teknologi GPS yang digunakan untuk menentukan posisi pulau di tengah laut berdasarkan metode toponimi. Survei yang dilakukan berhasil mengindentifikasi posisi ketiga puluh pulau tersebut berikut dengan koordinat lintang dan bujur berdasarkan penentuan GPS. Kata kunci : Global Positioning System (GPS), pulau, toponimi A marine resources management nowadays has became attention in relation with a sustainable development concept. On the other hand, technology about marine elements is very important for marine resources management and for marine use management. In order to support maritime territory management and its geographical elements (Island) in Indonesian territory, it is required to use GPS technology to determine the position of the island on the sea based on island toponymy method. The Survey from Morotai Island and its surrounding has identified the position of thirty islands following the latitude and longitude coordinates based on the determination of GPS. Key words : Global Positioning System (GPS), island, toponymy

Analysis of Growth Gracilaria sp. In Shrimp Pound From The Level of Sedimentation Niniek Widyorini
Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Vol 6, No 1 (2010): Jurnal Saintek Perikanan
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

Due to the increasing of Gracilaria sp demand in international market, intensive culture is required for it. Used niche of shrimp pound could be give adventages in Gracilaria sp culture, and also Gracilaria sp culture in shrimps pound can be used as shelter for the shrimp from direct sunlight. The aim of this research are to know sedimentation effect in shrimp pound its relationship in Gracilaria sp growth and water quality because of existing Gracilaria sp in the pound.The research on June until December 2005.Experiment research method is used in this research. Data of Gracilaria sp growth and level of sedimentation will be collected in 7 (seven) weeks in one week time interval “rakit apung” methods is used in this research and its located the near of water inlet, pound fields, and near the water outlet. Corelation and regration are used to data analysis. Temperature, salinity, pH, depth, water flow and transparency of the water will be analyzed for water quality. As the result, the average of growth level of Gracilaria sp which is located in the fields pound higher than Gracilaria which located both near the water inlet and outlet, and the average of sedimentation level in the field pound less than both near the water inlet and outlet. In corelation regretion analysis found an interaction between level of sedimentation and the growth of Gracilaria sp especially which is located near the water inlet. The water quality still good for Gracilaria sp.Key Words: Sedimentation, Gracilaria sp, Growth

STATUS KEBERLANJUTAN DIMENSI EKOLOGI DALAM PENGEMBANGAN KAWASAN MINAPOLITAN BERKELANJUTAN BERBASIS PERIKANAN BUDIDAYA AIR TAWAR DI KABUPATEN MAGELANG Arif Budi Wibowo; Sutrisno Anggoro; Bambang Yulianto
Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Vol 10, No 2 (2015): JURNAL SAINTEK PERIKANAN
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

Sustainability Status of Ecological Dimensions in Development of Sustainable Minapolitan Region Based on Freshwater Aquaculture in Magelang Regency ABSTRAK Pengembangan kawasan minapolitan berkelanjutan adalah pembangunan kawasan yang mengintegrasikan antara dimensi ekologi, dimensi ekonomi, dimensi sosial, dimensi infrastruktur, dan dimensi hukum dan kelembagaan. Tujuan dari penelitian ini adalah untuk: 1) mengkaji status keberlanjutan dimensi ekologi dalam pengembangan kawasan minapolitan, 2) mengkaji atribut yang sensitif berpengaruh terhadap nilai indeks dan status keberlanjutan dimensi ekologi pengembangan kawasan minapolitan serta 3) merumuskan prioritas kebijakan yang bisa diterapkan untuk pengembangan kawasan minapolitan berkelanjutan di Kabupaten Magelang. Penelitian ini dilaksanakan pada bulan Mei sampai dengan September 2014 berlokasi di tiga kecamatan (Sawangan, Mungkid dan Muntilan) di Kabupaten Magelang. Responden sebagai sumber informasi berasal dari unsur pemerintah, pembudidaya, dan unsur akademisi yang dipilih menggunakan teknik purposive random sampling. Analisa data penentuan status dan faktor pengungkit menggunakan metoda RAP-multidimensi, sedangkan untuk penentuan prioritas kebijakan menggunakan teknik Analitycal Hierarchy Proses (AHP). Dari hasil penelitian diperoleh bahwa status keberlanjutan dimensi ekologi dalam pengembangan kawasan minapolitan Kabupaten Magelang berada pada status cukup berkelanjutan (50-70%). Strategi untuk peningkatan status keberlanjutan dilakukan dengan perbaikan pada atribut yang sensitif berpengaruh signifikan terhadap nilai dan status berkelanjutan. Kata kunci : RAP-Multidimensi, RAP-fish, faktor pengungkit, AHP, perikanan budidaya air tawar Minapolitan sustainable development is development of the area that integrates between the ecological dimension, economic dimension, the social dimension, the dimension of infrastructure, and the legal and institutional dimensions. The purposes of this study were: 1) to determine the status of sustainability of ecological dimension, 2) to determine sensitive attributes affecting the index value and status of ecological dimension sustainability and 3) formulating policy priorities that can be applied to the development of sustainable minapolitan development in Magelang regency.This study was conducted in May to September 2014 in three districts (Sawangan, Mungkid, and Muntilan) of Magelang. Respondents as a source of information came from the government, fish farmers, and academicians . They were selected using purposive random sampling technique. Status of sustainability and the lever factor were analysed using RAP-multidimensional method, whereas for formulating policies using techniques of Analitycal Hierarchy Process (AHP). The result showed that the ecological dimension is in the status of sustainable enough (50-70%). Strategies to increase the status of sustainability were realized by repair the sensitive attribute significantly affect on the value and sustainable status. Keywords : RAP-Multidimensional, RAP-fish, leverage factor, AHP, freshwater aquaculture

A Study on The Domestication of Tiger Snail (Babylonia spirata l) in An Abanont Brackish Water Pond at Different Stocking Denstities Sri Rejeki; Titik Susilowati
Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Vol 6, No 2 (2011): Jurnal Saintek Perikanan
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

Tiger snail (Babylonia spirata L) is one of molllucs family which has a good economic value both for local and international market. This study was aimed to find out the effects of different stocking densities on the specific growth rate and survival rate of tiger snail cultured in an abandon brackish water pond. A completely randomized design was applied in this research. The treatments were A (18 tiger snail/0,15m2), B (22 tiger snail/0,15m2), C (26 tiger snail/0,15m2), D (30 tiger snail/0,15m2), E (34 tiger snail/0,15m2). Each treatment was repicated three times. Plastic baskets at the size of 0.15 were used as a cage for holding system. Tiger snail at initial average body weight of 8 gram approximately was used as tested animal. The study was carried out at an abandon brackish water pond Desa Tapak Kecamatan Semarang Barat, Central java Province from May – July 2007. The results show that different stocking densities affected the specific growth rate and food conversion ratio of tiger snail significantly. Stocking density of 18 snail/0.15 m2 gave the highest specific growth rate (2.07%/day) and food conversion ratio of 1,747. Keyword: Domestication, tiger snail, stocking density, abandon brackish water pond

PERFORMA PERTUMBUHAN IKAN LELE(Clarias gariepinus, Burchel) YANG DIBUDIDAYAKAN SECARA SUPERINTENSIF MELALUI APLIKASI SISTEM IMTA DENGAN CACING Tubifex DI BOYOLALI Growth Performances of Catfish (Clarias gariepinus, Burchel) cultivated superintensif through Application of IMTA with Tubifex worm System in Boyolali Sri Hastuti; Subandiyono Subandiyono; Sarjito Sarjito
Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Vol 12, No 1 (2016): SAINTEK PERIKANAN
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

Usaha budidaya ikan di Boyolali mampu memberikan pendapatan dari usaha budidaya lele dengan hasil yang menjajikan. Usaha lele tersebut mampu memberikan kontribusi terhadap pendapatan rumah tangga sebesar 54% hingga 100%. Nilai R/C rasio lebih besar 1, yang berarti bahwa usaha tani budidaya ikan lele tersebut efisien dan layak untuk dikembangkan. Ketenaran Kabupaten Boyolali akan hasil budidaya ikan lele yang menjajikan secara ekonomi telah memacu penduduknya untuk memproduksi ikan lele.Hasil produksi ikan lele di Boyolali secara nyata dipengaruhin oleh variabel luas lahan dan variabel benih lele.Oleh karena itu, keterbatasan lahan yang dimiliki oleh para usahatani Sumber Rejeki tersebut menjadi permasalahan yang perlu dipecahkan.Untuk memaksimumkan produksi lele dengan lahan terbatas tersebut dapat dilakukan dengan teknologi IMTA (Integrated Multi TrophicAquaculture). Teknologi ini menggabung ikan lele dengan cacing tubifec, sehingga akan menghasilkan ikan lele dan tubifek.Namun kegiatan budidaya sistem IMTA yang menggabungkan antara ikan lele dengan cacing Tubifek masih tergolong belum pernah dilakuakan oleh para petani.Sistem IMTA ini memiliki beberapa kelebihan, yaitu (1) meningkatkan efisiensi input dan output yang menghasilkan kenaikan nilai ekonomis, karena dihasilkan ikan lele dan cacing tubifek. (2) memperbaiki atau meminimalisir limbah buangan kegiatan budidaya ikan, (3) meningkatkan kemanfaatan limbah kegiatan budidaya ikan yang potensial sebagai pupuk organik untuk proses produksi Tubifec. Benih lele berukuran bobot 1,5±0,1 g dipelihara dengan kepadatan 500 ekor per meter persegi. Selama pemeliharaan 3 bulan, ikan diberi pakan pelet komersial untuk lele secara ad satiationdengan frekwensi dua kali sehari. Pada bagian atas kolam dilengkapi dengan talang bertingkat sebagai tempat pemeliharaan tubifec. Air dari kolam dipompa ke atas talang atau wadah cacing tubifec. Hasil pemeliharan diperoleh ikan lele dengan pertumbuhan relatif sebesar 72,96 g% perhari dan angka kelngsungan hidup mencapai 96,66% dan nilai FCR sebesar 1. Selama satu bulan, Tubifec mengalami pertumbuhan sebesar 66,66% Fish farming in Boyolali are able to provide income from catfish culture with promising results. The catfish effort to contribute to the household income by 54% to 100%. Rated R / C ratio is greater than 1, which means that the catfish farming are efficient and feasible to develop. The Boyolali was known as location of catfish production and that will be farmed economically promising has spurred citizens to produce catfish. The production of catfish in Boyolali significantly was affectedby land area and seed catfishvariable. Therefore, the limited land owned by the farmers “Sumber Rejeki” isa problem that needs to be solved. To maximize the production of catfish with limited space can be done throughIMTAtechnology (Integrated Multi TrophicAquaculture). This technology merge catfish with tubifex worms, so it will produce catfish and tubifex. However, farming activities with IMTA system that combines catfish with worms tubifex still relatively rare by farmers. IMTA system has several advantages, (1) improve the efficiency of inputs and outputs that result in increased economic value, as produced catfish and worm tubifex. (2) correct or minimize waste from fish farming activities, (3) increase the utilization of the fish farming waste as an organic fertilizer for the tubifex production process. Sized catfish seed weight of 1.5±0.1 g maintained at densities of 500 individuals per square meter. During the three-month rearing time, fish fed a commercial pellet for catfish ad satiation with a frequency of twice a day.At the top of the catfish pondwas put the equipment with arranged adouble level drine pipe as a tubifec pond culture. The water from the catfish pond is pumped to the top drine pipe or worm tubifecrearing tank. Results of the catfish farming wtih IMTA system were relative growth rate of catfish i.e. 72.96 g% daily and survival rate reached 96.66% and FCR value is 1. During one month, tubifex grow were66.66%

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Journal Mail Official
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Location
Kota semarang,

Jawa tengah

INDONESIA