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Journal of Aquaculture Management and Technology
Published by Universitas Diponegoro
ISSN : -     EISSN : -     DOI : -
Core Subject : Science, Education,
Computer Science & IT Decision Sciences, Operations Research & Management Other
Journal of Aquaculture Management and Technology diterbitkan oleh Program studi Budidaya Perairan, Fakultas Perikanan dan Ilmu Kelautan, Undip. JAMTech menerima artikel-artikel yang berhubungan dengan akuakultur, nutrisi pakan ikan, parasit dan penyakit ikan, produksi budidaya, dll.
Arjuna Subject : -
Articles 305 Documents
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PENGARUH HIGHLY UNSATURATED FATTY ACIDS (HUFA) DALAM PAKAN BUATAN DAN KEPADATAN TERHADAP TINGKAT KONSUMSI PAKAN, PERTUMBUHAN, DAN KELULUSHIDUPAN IKAN PATIN (Pangasius hypophthalmus) Dewi, Santika Kurnia; Subandiyono, - -; Hastuti, Sri
Journal of Aquaculture Management and Technology Volume 6, Nomor 4, Tahun 2017
Publisher : Journal of Aquaculture Management and Technology

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Abstract

Highly unsaturated fatty acids (HUFA) berfungsi sebagai sumber energi metabolik. Tujuan penelitian ini untuk mengetahui pengaruh maupun interaksi HUFA dan kepadatan terhadap tingkat konsumsi pakan dan pertumbuhan ikan patin (P. hypophthalmus).  Pengambilan data dilakukan selama 35 hari. Penelitian dilakukan di Laboratorium Budidaya Perairan, FPIK, UNDIP.  Ikan uji adalah ikan patin (P. hypophthalmus) dengan bobot tubuh rata-rata sebesar 3,46±0,09 g/ekor.  Pemberian pakan pada pukul 09.00, 12.00, dan 16.00 secara at satiation.  Metode penelitian adalah rancangan acak kelompok (RAK) pola faktorial ordo  (3x2) dan setiap perlakuan diulang 3 kali.  Faktor A adalah pakan uji dengan penambahan HUFA sebesar 0% pakan (A1), 1% pakan (A2) dan 2% pakan (A3) sedangkan faktor B adalah kepadatan 1 ekor/L (B1) dan 2 ekor/L (B2).  Variabel yang diukur meliputi TKP, EPP, PER, RGR, dan SR.Hasil penelitian menunjukan bahwa HUFA maupun  kepadatan memberikan pengaruh yang berbeda (P<0,05) terhadap nilai TKP, dan RGR namun memberikan pengaruh yang sama (P>0,05) terhadap nilai EPP, PER,  dan SR.  Terdapat interaksi antara HUFA maupun kepadatan terhadap nilai TKP dan RGR namun tidak pada nilai EPP, PER, dan SR.  Perlakuan A3B1 memberikan nilai tertinggi pada TKP (84.78±3.76g), EPP (77.24±5.22%), PER (3.75±1.03%), RGR (3.49±0,33%/hari), dan SR (98.33±.2.89%).  Kesimpulan dari penelitian ini adalah bahwa perlakuan A3B1 (HUFA 2% dalam pakan dan kepadatan 1 ekor/L) memberikan hasil tertinggi.  Highly unsaturated fatty acids (HUFA’s) was as a compound of metabolic energy source. The purpose of this research was to know the influence and interaction of HUFA and density on the feed consumption and growth of the catfish (P. hypophthalmus).  This research was conducted at the Laboratory of Aquaculture, FPIK, UNDIP for 35 days.  The trial fish used was catfish (P. hypophthalmus) with the average body weight of  3.46±0.09 g/fish and was fed for three times a days i.e at 09:00, 12:00, and 16:00, by applying at satiation method.  The experimental design used a group randomized design with factorial design order (3x2) and each treatment was repeated 3 times. Factor “A” was  treatments of artificial feed with 0% HUFA (A1), 1% HUFA (A2), and 2% HUFA (A3), while factor “B” was  treatments of different density 1 fish/l (B1) and 2 fish/l (B2).  The variables measured were total of feed consumption (TFC), food conversion efficiency (FCE), protein efficiency ratio (PER), relative growth rate (RGR), and survival rate (SR).  The data showed that HUFA and density affected significantly (P<0.05) on the values of the total of feed consumption (TFC) and relative growth rate (RGR), but didn’t affect significantly (P>0.05) on the values of food conversion efficiency (FCE), protein efficiency ratio (PER), and survival rate (SR).  There was an interaction between density and HUFA for the value of feed consumption (TFC) and relative growth rate (RGR), but was not for the value of food conversion efficiency (FCE), protein efficiency ratio (PER), and survival rate (SR). The treatment of A3B1 i.e showed the highest value for the TKP (i.e 84.78±3.76 g), EPP (i.e 77.24±5.22%), PER (i.e 3.75±1.03%), RGR (i.e 3.49±0.33%/day), and SR (i.e 98.33±2.89%). It was suggested that treatment A3B1 (i.e 2% HUFA and the stocking density of 1 fish/l ) resulted on the best value.
Pengaruh Persentase Jumlah Pakan Buatan Yang Berbeda Terhadap Pertumbuhan dan Kelulushidupan Keong Macan (Babylonia spirata L.) Fransiska, Fransiska; Rachmawati, Diana; Samidjan, Istiyanto
Journal of Aquaculture Management and Technology Vol 2, No 4 (2013) : Journal of Aquaculture Management and Technology
Publisher : Journal of Aquaculture Management and Technology

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Abstract

Spettedbabylon(Babylonia spirata L.) is a member of gastropod species are important economic value, so the potential for propagation. Cultivation begins with the discovery of artificial feed derived from fish meal and flour of green mussels as a source of animal protein to feed artificial leopard slugs. Green mussel (Perna viridis) is known as a cheap source of animal protein and rich in essential amino acids (arginine, leucine, lysine). In addition, mussels flour can be substituted in place of fish meal that can be used as an artificial feed. This study aimed to determine the effect of feeding with a different percentage of the amount of feed and figure out the percentage of feed that gives the best effect for growth, and survival spettedbabylon. The material used is a spettedbabylon(Babylonia spirata L.) with an average weight of 15.81 ± 0.02 g / fish originating from Jepara waters. Spettedreared in a plastic container with a basket volume 4 liters of water with 2 stocking density tail / liter, so that each unit there are 8 tails maintenance / container. Test feed is feed-shaped pasta made with flour protein content of 35% green mussels as a source of animal protein. The method used is performed using experimental laboratory methods. Completely Randomized Design (CRD) that is 3 treatments and 3 replications. A treatment (percentage of feed 3%), B (percentage of feed 5%), C (percentage of feed 7%). Data were analyzed using analysis of variance followed by Duncan's test. This study was conducted in November 2011 s / d in February 2012 in BBPBAP Jepara, Central Java. The results showed that the percentage of different artificial feed on snails tiger (Babylonian spirata L.) significantly (P <0.05) on the specific growth rate (SGR), Protein Efficiency Ratio (PER), was highly significant(P <0.01) on the efficiencyof feed utilization(EPP), but no significant effect on survival (SR) leopard slug. Treatment A (3%) give the best effect on SGR (0.09 ± 0.02), SR (95.83 ± 7.22) PER (32.84 ± 06,40), EPP (2.50 ± 0, 40) and SR (7.22 ± 95.83). Water quality is still within the normal range for tiger snail farming activities with the 26.9-30o temperature, salinity 31-32 ppt, pH 7-8, DO from 3.9 to 4 mg / liter undetectable ammonia, nitrate and nitrite 0.005 0.011.
PEMANFAATAN TEPUNG HASIL FERMENTASI AZOLLA (Azolla microphylla) SEBAGAI CAMPURAN PAKAN BUATAN UNTUK MENINGKATKAN PERTUMBUHAN DAN KELULUSHIDUPAN IKAN GURAME (Osphronemus gouramy) Virnanto, Luthfi Adhi; Rachmawati, Diana; Samidjan, Istiyanto
Journal of Aquaculture Management and Technology Volume 5, Nomor 1, Tahun 2016
Publisher : Journal of Aquaculture Management and Technology

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Abstract

Pakan merupakan salah satu faktor terpenting yang berpengaruh terhadap pertumbuhan dan kelangsungan hidup ikan yang akan dibudidayakan. Pemberian pakan yang optimal akan menghasilkan pertumbuhan yang baik. Salah satu bahan pakan alternatif yang belum banyak dimanfaatkan adalah tumbuhan air azolla. Azolla dalam bentuk tepung dapat dipakai sebagai campuran pakan ikan dalam bentuk pellet. Azolla mempunyai kandungan protein kasar sebesar 19,54% dan memiliki serat kasar yang cukup tinggi, untuk meningkatkan kandungan protein dan menggurangi serat kasar dapat dilakukan dengan proses fermentasi. Penelitian ini bertujuan untuk mengetahui pengaruh penambahan tepung fermentasi azolla sebagai bahan baku pakan buatan serta dosis terbaik tepung fermentasi azolla terhadap performa pertumbuhan benih ikan gurame (O. gouramy).Metode penelitian yang dilakukan adalah metode eksperimen dengan rancangan acak lengkap (RAL) yang terdiri dari 5 perlakuan dan 3 kali ulangan. Perlakuan yang diterapkan adalah perlakuan A, B, C, D, dan E (0%; 10%; 15; 20%; 25%). Ikan uji yang digunakan adalah ikan gurame (O. gouramy) yang berumur 2 – 3 bulan, dengan bobot 3 – 5 g, dengan padat penebaran 10 ekor ikan yang dipelihara dalam akuarium, dengan masa pemeliharaan selama 40 hari.  Pakan yang digunakan dalam penelitian ini adalah pakan buatan berbentuk pellet. Pakan buatan dibuat dengan adanya penambahan bahan baku tepung fermentasi azolla. Hasil penelitian menunjukan bahwa pemberian tepung fermentasi azolla sebagai bahan baku dengan dosis yang berbeda pada tiap perlakuan, memberikan pengaruh nyata (P<0,05) terhadap laju pertumbuhan relatif, efisiensi pemanfaatan pakan dan protein efisiensi rasio pada ikan gurame (O. gouramy). Sedangkan pada variabel kelulushidupan tidak berpengaruh nyata (P>0,05). Pada perlakuan D 20% merupakan hasil terbaik yang menghasilkan nilai RGR (0,80±0,05) dan EPP (45,96±1,61). Dengan demikian, penambahan tepung hasil fermentasi azolla (20%) sangat disarankan untuk diterapkan dalam kegiatan budidaya ikan gurame (O. gouramy) untuk meningkatkan pertumbuhan. Feed is one of the most important factors because they have an influence on the growth and survival of  fish. Optimal feeding will produce good growth. The one of alternative feed ingredients that have not been widely used is Azolla. Azolla flour can be used as a mixture of fish feed with pellets form. Azolla has a crude protein content as much as 19.54% and has a high crude fiber also, than to increase the protein content and bring down the crude fiber can be made with the fermentation process. The aim of this research for to know the effects and the best dosage of Azolla flours that mixed with artificial feeds againts growth rate of Gouramy (O.gouramy) seeds.The research used experimental methode with a completely randomized design (CRD), which consists of 5 treatments and 3 replications. The treatment applied is treatment A, B, C, D, and E (0%; 10%; 15; 20%; 25%).  Fish samples used are Gouramy fish (O. gouramy)with  averages of age(2-3 months), weight (3-5 g ), fish density (10 fish/aquarium) and  maintenance period during  40 days. Fish feed in this study had pellets form and its made with add Azollas fermented flour.The results showed that addition of Azolla fermented flour into the artificial feed with different doses of each treatment, providing significant differences (P <0.05) relative growth rate, feed efficiency and protein efficiency ratio of the gouramy (O. gouramy) , Whereas the survival index were not significantly different (P> 0.05). In the treatment D had the best result that produces RGR values (0.80 ± 0.05) and FE (45.96 ± 1.61). Thus, the addition of azolla fermented flour (20%) is very recommended to be applied in gouramy culture (O. gouramy) to boost the growth.
PENGARUH PADAT TEBAR TINGGI TERHADAP KELANGSUNGAN HIDUP, KONSUMSI PAKAN DAN EFISIENSI PAKAN SERTA PERTUMBUHAN JUVENIL LOBSTER AIR TAWAR (Cherax sp.) Kristiana, Rhesi; Arini, Endang; Hastuti, Sri
Journal of Aquaculture Management and Technology Volume 3, Nomor 3, Tahun 2014
Publisher : Journal of Aquaculture Management and Technology

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Abstract

Lobster air tawar (Cherax sp.) merupakan salah satu jenis lobster yang telah dibudidayakan di Indonesia. Padat penebaran merupakan salah satu faktor kunci untuk mencapai produksi yang optimal, terkait dengan budidaya intensif untuk memperoleh produksi yang tinggi. Penelitian ini bertujuan untuk mengkaji pengaruh padat tebar terhadap kelangsungan hidup, konsumsi pakan dan efisiensi pakan serta pertumbuhan lobster air tawar stadia juvenil (Cherax sp.). Penelitian ini dilaksanakan pada bulan Oktober – Desember 2013 di Laboratorium Basah Budidaya Perairan, Jurusan Perikanan, Fakultas Perikanan dan Ilmu Kelautan Universitas Diponegoro, Semarang. Hewan uji yang digunakan adalah Lobster Air Tawar (Cherax sp.) umur 40 hari. Penelitian ini menggunakan Rancangan Acak Lengkap (RAL) dengan 3 kali ulangan yaitu perlakuan A (padat penebaran 200 ekor/m2), B (padat penebaran 250 ekor/m2), C (padat penebaran 300 ekor/m2), D (padat penebaran 350 ekor/m2). Variabel yang diukur adalah glukosa darah, tingkat konsumsi pakan, efisiensi pemanfaatan pakan, pertumbuhan, kelulushidupan dan kualitas air. Hasil penelitian menunjukkan ada pengaruh (P<0,05) padat penebaran terhadap efisiensi pemanfaatan pakan, pertumbuhan dan kelulushidupan lobster air tawar. Perlakuan A (padat penebaran 200 ekor/m2)memiliki hasil tertinggi pada efisiensi pemanfaatan pakan yaitu 64,50±1,23%, pertumbuhan yaitu 1,81±0,02% dan kelulushidupan yaitu 90,28±2,41%. Sedangkan pada perlakuan D (padat penebaran 350 ekor/m2) memiliki hasil terendah yaitu efisiensi pemanfaatan pakan 41,80±0,56%, pertumbuhan 1,02±0,00% dan kelulushidupan 65,87±1,37%. Padat tebar yang terbaik untuk pertumbuhan dan kelulushidupan lobster air tawar stadia juvenil adalah 200 ekor/m2. Freshwater crayfish (Cherax sp.) is one type of  lobsters that has been cultivated in Indonesia. One obstacle is the lobster stocking density. Stocking density is one of the key factors to achieve optimal growth, it is associated with intensive cultivation to obtain high production. This study aimed to assess the effect of stocking density on survival rate, consumption and efficiency of feed utilization and growth rate of juvenile stadia freshwater crayfish (Cherax sp.). The research was implemented in October-December 2013 in the Wet Laboratory of Aquaculture, Department of Fisheries, Faculty of Fisheries and Marine Science, Diponegoro University. Semarang. Cultivan used in this research is Freshwater Lobster (Cherax sp.) aged 40 days. Using a completely randomized design (CRD) with 3 replications that treatment A (200 ekor/m2 stocking density), B (250 lobsters/m2 stocking density), C (300 lobsters/m2 stocking density), D (300 lobsters/m2 stocking density). The variables measured were blood glucose, the level of feed intake, feed utilization efficiency, growth, survival and quality of water. The results showed there was effect (P<0.05) stocking density against survival rate, feed utilization efficiency and growth rate juvenil Freshwater Lobster (Cherax sp.). Treatment A (stocking density 200 lobsters/m2) had the highest result on the efficiency of feed utilization is 64.50±1.23% , the growth rate of which is 1.81 ± 0.02 % and the survival rate is 90.28±2.41% . While on treatment D (stocking density 350 lobsters/m2) had the lowest result efficiency of feed utilization is 41.80±0.56%, 1.02±0.00% growth and survival 65.87±1.37%. The best stocking density for growth and survival of juvenile freshwater crayfish is 250 lobsters/m2.
EVALUASI KELAYAKAN USAHA PEMBESARAN IKAN BANDENG (Chanos chanos) SEMI INTENSIF DI KECAMATAN TAYU KABUPATEN PATI Sukmawati, Dian Asih; Elfitasari, Tita; Rejeki, Sri
Journal of Aquaculture Management and Technology Volume 7, Nomor 1, Tahun 2018
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Abstract

Budidaya pembesaran ikan bandeng di Tayu memiliki potensi yang baik karena permintaan pasar yang selalu meningkat. Tetapi, potensi tersebut tidak di imbangi dengan hasil produksi ikan bandeng akibat banyaknya pembudidaya yang belum mempunyai ketrampilan dan kemampuan yang ideal untuk mengevaluasi kegiatan budidaya pembesaran ikan bandeng baik terutama evaluasi dibidang finansial. Pembudidaya diharapkan para dapat memiliki ketrampilan dan kemampuan dalam mengevaluasi budidaya pembesaran ikan bandeng. Penelitian ini menggunakan satu sampel POKDAKAN yaitu kelompok Murya. Tujuan dari penelitian ini adalah untuk mengetahui aspek ekonomi dengan menganalisis besarnya modal, pendapatan dan keuntungan, serta menganalisis aspek kelayakan usaha dari sisi finansial (NPV, IRR, B/C Ratio, Payback Period) agar diketahui kelayakan pembesaran ikan bandeng (Chanos chanos) semi intensif di Kecamatan Tayu, Pati. Metode penelitian yang digunakan adalah studi kasus. Pengumpulan data menggunakan metode wawancara dan distribusi kuisioner. Analisis data yang digunakan adalah deskriptif kualitatif. Hasil penelitian aspek ekonomi di peroleh bahwa modal investasi berkisar Rp. 12.330.000,-, hingga Rp. 304.900.000,-/Ha, besar biaya total adalah Rp.92.210.000,- hingga Rp. 179.030.000,-/Ha/tahun, besar pendapatan Rp. 135.850.000,- hingga Rp.973.750.000/Ha/tahun dan besarnya keuntungan berkisar Rp.5.580.000,- hingga Rp.806.700.000/Ha/tahun. Hasil evaluasi aspek kelayakan usaha diperoleh nilai rata-rata PP, NPV, dan B/C ratio serta IRR adalah 5,74 tahun, Rp.68.064.730,-, dan 1.07 serta 29%. Dari hasil evaluasi tersebut dapat disimpulkan bahwa usaha budidaya pembesaran ikan bandeng secara semi intensif secara finansial layak untuk di usahakan. There is a great potential of milkfish rearing in Tayu because with the market demands always increasing. Unfortunately, this potential is not accompanied with quantity of milkfish production because fish farmers do not have skill to evaluate their activity especially financial yet. In the future, the fish farmers should have skill to evaluate their bussines.This research used one sample fish farmers group, namely Murya group. The aim of this research were to investigate the economic aspect by analysing the capital investment, costs, revenues, benefits and financial aspects (NPV, IRR, B/C Ratio, Payback Period) of milkfish (Chanos chanos) semi intensive rearing, as well as to analyse the feasibility of milkfish (Chanos chanos) rearing in District Tayu Pati. The method used in this research is case study where interviews and questionnaires distribution were used. The analysis method used in this research was descriptive method. The result for the economic aspect of this research showed that milkfish culture in Pati, the capital investment average was Rp. 12.330.000,-, to Rp.304.900.000,-/Ha, the total cost was Rp.92.210.000,- to Rp.179.030.000,-/Ha/year, the revenue was Rp.135.850.000,- to Rp.973.750.000/Ha/ year, and benefit was Rp.5.580.000,- to Rp.806.700.000/Ha year. The evaluation result of bussines feasibility obtained was the average values of PP, NPV, B/C ratio and IRR were 5,74 years, Rp.68.064.730,-, then 1.07 and 29%. From the evaluation, it is concluded that Milkfish in Pati is feasible.
PENGGUNAAN BAKTERI KANDIDAT PROBIOTIK PADA PAKAN BUATAN TERHADAP EFISIENSI PEMANFAATAN PAKAN, PERTUMBUHAN DAN KELULUSHIDUPAN LELE DUMBO (Clarias gariepinus) Rahmawan, Mohamad Elvino Andi; Suminto, -; Herawati, Vivi Endar
Journal of Aquaculture Management and Technology Volume 3, Nomor 4, Tahun 2014
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Abstract

Pemberian bakteri kandidat probiotik yang berasosiasi di dalam usus lele dumbo (Clarias gariepinus) pada pakan buatan diharapkan dapat meningkatkan efisiensi pemanfaatan pakan, pertumbuhan dan kelulushidupan didalam kultur lele dumbo. Penelitian ini bertujuan untuk mengetahui pengaruh penggunaan bakteri probiotik terhadap efisiensi pemanfaatan pakan, pertumbuhan, kelulushidupan lele dumbo (C. gariepinus) dan untuk mengetahui jenis bakteri terbaik. Bakteri probiotik yang digunakan adalah Bacillus subtilis, Bacillus licheniformis, Pseudomonas putida dimana bakteri tersebut telah di isolasi dari dalam usus lele dumbo. Variabel yang dikaji meliputi efisiensi pemanfaatan pakan, laju pertumbuhan spesifik harian (Specific Growth Rate), dan kelulushidupan (Survival Rate). Penelitian ini menggunakan 4 perlakuan dan 3 kali ulangan, yaitu perlakuan A (kontrol), B (bakteri probiotik Bacillus subtilis ), C (bakteri probiotik Bacillus licheniformis), dan D (bakteri probiotik Pseudomonas putida) dengan kepadatan bakteri probiotik yang diberikan pada masing-masing perlakuan sebanyak 107 sel/ml. Hasil penelitian menunjukkan bahwa perlakuan B memberikan nilai efisiensi pemanfaatan pakan (EPP), (SGR) dan kelulushidupan (SR) tertinggi (P<0,05), yaitu dengan nilai (67,32 ± 2,63%), (2,95 ± 0,15%) dan (95,00 ± 5,00%). Berdasarkan pada hasil penelitian dapat disimpulkan bahwa penggunaan bakteri kandidat probiotik penggunaan bakteri kandidat probiotik memberikan pengaruh nyata terhadap efisiensi pemanfaatan pakan dan pertumbuhan lele dumbo, namun tidak berpengaruh nyata terhadap kelulushidupan lele dumbo. Serta bakteri Bacliius subtilis dengan kepadatan 107 sel/ml dapat meningkatkan nilai EPP, SGR dan SR selama 56 hari pemeliharaan lele dumbo. The addition of probiotic bacteria candidate assosiated in the catfish intestine (Clarias gariepinus) in the artificial feed was able to incrased on feed utilization efficiency (EPP), specific growth rate and survival rate in the culture catfish. The aims of this research was to find out the effect of addition  probiotic bacteria on feed utilization efficiency (FUE), specific growth rate (SGR), survival rate (SR) and to know best bacteria strain. Probiotic bacteria in uses is Bacillus subtilis, Bacillus licheniformis, Pseudomonas putida where probiotic bacteria the has in isolation in the catfish intestine. The variables examined included the value of the efficiency of feed utilization (EPP), the specific growth rate (SGR) and survival rate (SR). This research uses 4 treatment and 3 replicates, that is treatment A (control), B (probiotic bacteria Bacillus subtilis), C (probiotic bacteria Bacillus licheniformis), and D (probiotic bacteria Pseudomonas putida) with density probiotic bacteria in the given each treatment as much 107 sel/ml. The result of this research in  the treatment B showed that efficiency of feed utilization score, growth and  highest survival rate (P<0,05), that is EPP (67,32± 2,63%), SGR (2,95 ± 0,15%) dan SR (95,00 ± 5,00%). Besed from the result showed that utilization of bacteria probiotic candidate of different feed utilization efficiency and spesifik growth on significantly different effect (P<0,05), but not significantly of survival rate Clarias gariepinus. Bacteria Bacillus subtilis to synthetic feed with density 107 sel/ml can be increase EPP, SGR and SR to maintenancy catfish during 56 day.
PENGARUH PERIODE PEMUASAAN TERHADAP EFISIENSI PEMANFAATAN PAKAN, PERTUMBUHAN DAN KELULUSHIDUPAN IKAN BAWAL AIR TAWAR (Colossoma macropomum) Subekti, Mulat; Hutabarat, Johannes; Hastuti, Sri
Journal of Aquaculture Management and Technology Volume 6, Nomor 3, Tahun 2017
Publisher : Journal of Aquaculture Management and Technology

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Abstract

Pada usaha budidaya ikan masalah yang sering muncul yakni pemberian pakan belum optimal, sehingga pakan yang dikonsumsi ikan kurang dimanfaatkan secara efektif dan efisien untuk pertumbuhan. Upaya yang banyak dilakukan saat ini dalam budidaya ikan adalah pengaturan teknik pemberian pakan agar pakan yang diberikan dimanfaatkan secara optimal untuk pertumbuhan dan kelangsungan hidup. Salah satu strategi pemberian pakan yang dapat dilakukan adalah dengan pemuasaan. Perlakuan pemuasaan yang dipelihara pada periode yang cukup atau satiation level, diharapkan terjadi pertumbuhan yang cepat setelah periode pemuasaan. Tujuan penelitian ini yaitu untuk menjelaskan pengaruh periode pemuasaan terhadap efisiensi pemanfaatan pakan, pertumbuhan dan kelulushidupan pada ikan bawal air tawar (C. macropomum). Ikan uji yang digunakan ikan bawal air tawar dengan bobot individu rata-rata 3,47±0,32 g/ekor. Pemberian pakan yaitu pada pukul 08.00, 12.00 dan 16.00 secara at satiation. Ikan uji dipelihara dengan padat tebar 1 ekor/l menggunakan wadah aquarium dengan lama pemeliharaan 30 hari. Penelitian ini dilakukan dengan metode eksperimen menggunakan Rancangan Acak Lengkap (RAL) dengan 4 perlakuan dan 3 kali ulangan.  Perlakuan dalam penelitian ini adalah pemuasaan pakan.  Perlakuan tersebut adalah perlakuan A (tanpa dipuasakan), perlakuan B (dipuasakan 1 hari diberi pakan 1 hari),perlakuan C (dipuasakan 1 hari diberi pakan 2 hari) dan perlakuan D (dipuasakan 1 hari diberi pakan 3 hari). Data yang diamati meliputi tingkat konsumsi pakan (TKP), efisiensi pemanfaatan pakan (EPP), rasio efisiensi protein (PER), laju pertumbuhan relatif (RGR), pertumbuhan panjang mutlak, kelulushidupan (SR) dan kualitas air. Hasil penelitian menunjukkan bahwa pemuasaan memberikan pengaruh nyata (P<0,05) terhadap TKP, EPP, PER, RGR dan pertumbuhan panjang mutlak  dan tidak berpengaruh nyata (P>0,05) terhadap survival rate. Perlakuan A menghasilkan nilai TKP 135,23±0,87, Perlakuan B menghasilkan EPP sebesar 92,89±1,23%, PER sebesar 2,49±0,03%  dan perlakuan D menghasilkan nilai RGR sebesar 7,21±0,10%/hari, dan pertumbuhan panjang mutlak sebesar 2,79±0,08 cm. Kualitas air pada media pemeliharaan masih pada kisaran yang layak untuk pemeliharaan ikan uji.  Kesimpulan yang diperoleh yaitu nilai tertinggi diperoleh pada perlakuan A untuk TKP, Perlakuan B untuk variabel EPP dan PER, perlakuan D untuk variabel RGR dan panjang mutlak. During cultured period, problems emerge was unoptimal feeding states,until that the  consumedfeed it less be utilizied by the fish effectively and efficiently for growth. The efforts are much done today in the fish culturing was repair technique of feeding so that the feed given can be utilized optimally for growth and survival. Techniques improper feeding will increase was the production cost of the fish. One of the solution for this problem was by starvation on feed. Starvation treatment are maintained on a sufficient period or satiation level, so expect a rapid growth after a period of starvation. The aim of this study was to determine the effect of fasting on the efficiency of feed utilization, growth and and survival rate of Red Belly Fish (C. macropomum). The trial fish was nile tilapia with the average body weight was 3,47±0,32g/fish. The feeding frequency was twice a day, that was on  08.00 am and 16.00 Pm,  by applying at satiation method.  The fish was cultured in an aquarium with stocking density of 1 fish/l for 30 days.  This research was used an experimental method of completely randomize design for 4 treatments and 3 replicates. The treatments used starvation fed. The treatments  werefish feeded (A), starving intermitten feeding (B), fish subjected one day starvation and two days refeeding (C), fish subjected one day starvation and three days refeeding (D),The measured data included the feed consumption rate, feed efficiency (FE), protein efficiency ratio (PER), relative growth rate (RGR), survival rate (SR), and water quality.   Data showed that the effects of starving feed resulted on significantly effect (P<0,05) on the feed consumption rate, FE, PER, RGR and absolute length growth.  but didn’t for the SR.  Treatment A produced the value for feed consumption rate was 135,23±0,87g, treatment B produced the value for FE was 92,89±1,23%, and PER was 2,49±0,03%/day, treatment D produced the value for RGR was 7,21±0,10%/day and absolute length growthwas 2,79±0,08 cm.Water quality parameters during the rearing period were suitable for the trial fish.  It concluded that treatment A resulted wa highest value for feed consumption rate, treatment B resulted the highest value for variables FE and PER, , treatment D resulted the highest value for variables RGR and absolute length growth, except for survival rate.
Identifikasi Bakteri Agensia Penyebab Motile Aeromonas Pada Ikan Lele Dumbo (Clarias gariepinus) yang Berasal dari Kecamatan Rowosari, Kabupaten Kendal Apriliyanti, Pramudita; -, Sarjito; Prayitno, Slamet Budi
Journal of Aquaculture Management and Technology Vol 2, No 2 (2013) : Journal of Aquaculture Management and Technology
Publisher : Journal of Aquaculture Management and Technology

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Abstract

Bacterial disease that often affects catfish was Aeromoniasis caused by Aeromonas sp. This disease was considered as an exotic disease since it reslted in mas mortality over 60% within 7 days. The purpose of this study was to determine the clinical signs of fish sample that affected by bacteria. To identifiy the causative agent of bacterial disesase morphological and biochemically, and then to observe the pathogenicity of the selected motile Aeromonas by postulat koch test. The research method used was a combination between exploration and case study. Purposive random sampling was used to collect moribund catfish. Observation of bacterial clinical signs was carried out to 10 moribund catfish that purposively rondomized. Isolation of bacteria from infected skin and kidney were conducted on aeromonas special medium GSP. Purification was done by recultured the selected colony 3 - 5 times on GSP medium. Three (3) selected isolate for Postulate Koch was cultured in Zobelt medium, and then intramusculary injected to 10 tested catfish of 10 - 15 cm, with concentration 108 clinical response and mortality rates were observed every 6 hours for 96 hours. Finally three tested bacteria were identified morphological and biochemically. The results showed clinical signs that clinical signs of moribund catfish related to Aeromonas infection. This could be seen from the presence of haemorrhagic and pethicia of the body skin such as at abdomen, dorsal and tail fins, exopthlamic and gill necrosis. From the 10 catfishes it could be isolates 16 bacterial colonies. Three selceted isolates namely LPK.GSP3.pk, LPK.GSP4.p and LPK.GSP6.k showed their pathogenicity on the postulat koch test. LPK.GSP6.k demonstrated their pathogen caused 35% mortality and 39% moribund, whilst LPK.GSP3.pk and LPK.GSP4.p equally caused 20% mortality and 47% moribund. Morphoogical and biochemical karacterization of the three isolates above indicated that three isolates closely related to Aeromonas caviae, Aeromonas hydrophila and Aeromonas salmonicida. This was might be the reason why these three bacterial isolates quite virulence.
PENGARUH PERENDAMAN HORMON TIROKSIN DENGAN DOSIS YANG BERBEDA TERHADAP DAYA TETAS TELUR, PERTUMBUHAN, DAN KELANGSUNGAN HIDUP LARVA IKAN MAS KOKI (Carassius auratus) Oktaviani, Lani; Basuki, Fajar; Nugroho, Ristiawan Agung
Journal of Aquaculture Management and Technology Volume 6, Nomor 4, Tahun 2017
Publisher : Journal of Aquaculture Management and Technology

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Abstract

Ikan mas koki (Carassius auratus) merupakan salah satu jenis ikan hias yang sangat digemari masyarakat serta memiliki nilai ekonomis yang tinggi. Namun dalam pembudidayaannya ikan mas koki terdapat permasalahan terutama rendahnya derajat penetasan pada telur ikan mas koki yang berkisar antara 40%-50%. Penggunaan teknik rekayasa hormonal seperti hormon tiroksin merupakan salah satu cara yang dapat dilakukan untuk memperbaiki kualitas pengembangan kultivasi pada ikan air tawar diantaranya ikan mas koki. Tujuan dari penelitian ini yaitu untuk mengetahui pengaruh perendaman hormon tiroksin terhadap daya tetas, kelangsungan hidup larva ikan mas koki (Carassius auratus) serta untuk mengetahui pengaruh dosis  hormon tiroksin yang terbaik untuk pertumbuhan dan kelangsungan hidup larva ikan mas koki(Carassius auratus). Tiroksin mengandung mineral berupa yodium yang dapat meningkatkan daya tetas dan kelangsungan hidup ikan. Perlakuan dalam penelitian ini adalah penggunaan dosis yang berbeda. Perlakuan tersebut adalah A 0 mg/L atau tanpa dilakukan perendaman dengan tiroksin, perlakuan B dosis 0.05 mg/L, perlakuan C dosis 0.1 mg/L dan perlakuan D dosis 0.15 mg/L dengan lama perendaman sama yaitu 24 jam. Data yang diamati meliputi derajat penetasan telur (%), pertumbuhan (SGR), kelulushidupan (SR) dan kualitas air. Hasil penelitian menunujukkan bahwa daya tetas telur ikan mas koki pasca perendaman hormon tiroksin berpengaruh nyata (P<0,05) dengan hasil terbaik pada perlakuan D 73.67% (dosis 0.15 mg/L ), hasil juga menunjukan berpengaruh nyata (P<0,05) dengan hasil terbaik pada perlakuan B 83.99% (dosis 0.05 mg/L) serta laju pertumbuhan spesifik menunjukkan tidak berpengaruh nyata (P>0,05) dengan nilai tertinggi pada perlakuan C 9.73% (dosis 0.1 mg/L). Sedangkan kualitas air selama pemeliharaan masih dalam kisaran layak untuk budidaya ikan mas koki. The goldfish (Carassius auratus) is one of the most popular fish species and has a very high economic value. But in the cultivation of goldfish chef there are problems, especially the low degree of hatching on the egg. The use of hormonal techniques such as thyroxine hormone is one way that can be done to improve the quality of cultivation development among freshwater fish including goldfish chef. The purpose of this research has determined the effect of thyroxine hormone immersion on hatching rate, survival rate of carp larvae (Carassius auratus) and to know the influence of doses thyroid hormone soaking is best for growth and survival of carp larvae (Carassius auratus). Thyroxine contains mineral such as iodine which can increase hatching rate and survival rate of the fish. The treatment in this study was treatment A 0 mg/L (Without immersion of the hormone thyroxine), B dose of thyroxine 0.05 mg / l, C dose of thyroxine 0.1 mg / l, and D dose of thyroxine 0.15 mg / l. Observed data included egg hatching (HR), survival rate (SR), specific growth rate, and water quality. The results showed that the hatching power of goldfish eggs after immersion hormone thyroxine significantly (P<0,05) with the best results on treatment D 73.67% (dose 0.15 mg / L), and also SR show significant effect (P<0,05) with the best value at treatment B 83.99%  (dose 0,05 mg / L) and specific growth rate showed no significant effect (P>0,01) with highest value in treatment C 9.37% (dose  0.1 mg / L hormone). While the quality of water during maintenance is still within a reasonable range for the cultivation of the goldfish.
Hibridisasi Ikan Nila Pandu dan Kunti Generasi f4 Terhadap Efek Heterosis pada Ikan Nila Larasati (Oreochromis niloticus) Generasi F4 Pada Umur 5 Bulan Vrahmana, Arief; Basuki, Fajar; Rejeki, Sri
Journal of Aquaculture Management and Technology Vol 2, No 4 (2013) : Journal of Aquaculture Management and Technology
Publisher : Journal of Aquaculture Management and Technology

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Abstract

The purpose of this research is measure the difference of heterocyst effect between tilapia larasati F4 fish ♂, tilapia pandu F4 fish ♂, and tilapia kunti F4 fish ♂, and between tilapia larasati F4 fish ♀, tilapia pandu F4 fish ♀, and tilapia kunti F4 fish ♀ in their age of five months. This research took place in Janti Freshwater Fish Hatchery and Aquaculture Unit, Klaten, from October-November 2012. The fish samples were ♂ and ♀ of F4 generation Larasati tilapia, F4 generation Pandu tilapia, and F4 generation Kunti tilapia at the age of 5 month. The rearring treatment lasted in 30 days. This research applied 3 treatment and 3 replications for each sex. The variables measured were weight, total length, thickness, survival rate (SR), relative growth rate (RGR), feed conversion ratio (FCR), and heterosis value of each variable. The Heterosis value of F4 generation Larasati tilapia at the age of 5 months are as follows SR ♂ and ♀ 1.66% 2.20%; weight ♂ ♀ 14.11% and 23.99%; total length ♂ ♀ 11.05% and 21.24%; thick ♂ ♀ 10.43% and 20.94%; and FCR ♂ ♀ 0.59% and 0.38%. Water quality during the research is still in a decent range for tilapia life is temperature 25.8 – 29oC; pH 6.7 to 7.7, and DO from 4.30 to 5.00 mg/ l.

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