Jurnal Iktiologi Indonesia

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ISSN / EISSN : 1693-0339 / 2579-8634
Published by: Masyarakat Iktiologi Indonesia (10.32491)
Total articles ≅ 144
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Rini Sahni Putri, Hasrianti Hasrianti, Damis Damis, Muhammad Bibin, Andi Rani Sahni Putri, Muh Kasim, Suhartono Nurdin
Published: 28 February 2022
Jurnal Iktiologi Indonesia, Volume 22, pp 65-76; https://doi.org/10.32491/jii.v22i1.582

Abstract:
Makassar Strait is a waters area with a large and relatively fertile water resource potential. The Makassar Strait area represents the confluence zone between the Pacific Ocean and Indian Ocean fish populations. The fertility of the waters makes this area one of the breeding zones for most aquatic biota. This study aims to map the catch of small pelagic fishes with water conditions in the Makassar Strait. The data used in this study was fish catches data from Makassar Strait waters from June to September 2021. Data on environmental conditions in the form of Sea Surface Temperature and chlorophyll-a concentration in the waters during the study period were obtained from the AQUA satellite with MODIS sensors, then combined with the Geographic Information System (GIS). The results of this study indicate that the sea surface temperature range in Makassar Strait waters was between 26.7°C–31.3°C and the concentration of chlorophyll-a was between 0.7 mg/m³ - 1.30 mg/m³. The highest catch points were at two points with the same catch of the purse seine, namely 4,000 kg at 118°51'E and 5°10'59"S and at 118°52'59"E and 5°3'S, while the lowest catch was 5 kg at 118°19'E and 4°57'S. It can be concluded that the presence of fish may be influenced by the water’s conditions favored by the target fish in the Makassar Strait. Abstrak Selat Makassar merupakan kawasan perairan yang memiliki potensi sumberdaya perairan yang cukup besar dan relatif subur. Kawasan Selat Makassar merepresentasikan zona pertemuan antara populasi ikan Samudera Pasifik dan Samudera Hindia. Kesuburan perairannya menjadikan daerah ini sebagai salah satu zona berkembang biak bagi sebagian besar biota perairan. Penelitian ini bertujuan untuk memetakan hasil tangkapan ikan pelagis kecil dengan kondisi perairan di Selat Makassar. Data yang digunakan dalam penelitian ini merupakan data tangkapan ikan dari Perairan Selat Makassar pada bulan Juni-September 2021. Data kondisi lingkungan perairan berupa Suhu Permukaan Laut dan konsentrasi klorofil-a perairan pada periode penelitian diperoleh dari satelit AQUA dengan sensor MODIS, kemudian dikombinasikan dengan Sistem Informasi Geografis. Hasil penelitian ini menunjukkan bahwa kisaran suhu permukaan laut di Perairan Selat Makassar antara 26,7°C–31,3°C dan konsentrasi klorofil-a antara 0,7 mg/m³ - 1,30 mg/m³. Titik tangkapan tertinggi terdapat pada dua titik dengan hasil tangkapan pukat cincin yang sama yaitu 4000 kg pada 118°51’BT dan 5°10’59”LS serta pada titik 118°52’59”BT dan 5°3’LS, sedangkan tangkapan terendah sebanyak 5 kg pada titik 118°19’BT dan 4°57’LS. Disimpulkan bahwa keberadaan ikan kemungkinan dipengaruhi oleh kondisi perairan yang disukai ikan target tangkapan di Selat Makassar.
Uttari Dewi, Dedi Jusadi, Mia Setiawati, Sri Nuryati
Published: 28 February 2022
Jurnal Iktiologi Indonesia, Volume 22, pp 35-48; https://doi.org/10.32491/jii.v22i1.598

Abstract:
A triplicate experiment was conducted to evaluate the effect of glutamine supplementation in the diet on the structure and function of intestine and the growth performance of striped catfish Pangasius hypopthalmus. Forty fishes with an initial body weight of 0.82 ± 0.01 g were distributed into a rectangular aquarium with a size of 60×50×40 cm and a water volume of 70 L. Fish were fed on the diet supplemented with glutamine of either 0, 1, 2, or 3%, respectively. Fish were fed on the diet at satiation for 60 days. Results showed that fish fed on the diet supplemented with 1, and 2% of glutamine significantly had the highest growth performance, including specific growth rate, protein retention, and feed efficiency. On the other hand, feeding on a diet supplemented with 3% of glutamine did not significantly affect the growth performance of fish. Fish in 1% and 2% glutamine treatments had better structure and function of intestine than two other groups of fish, namely the ratio of intestine length with body length, villus surface area, and protease enzyme activity. Thus, supplementation of 1% and 2% glutamine in the diet improves the structure and function of intestine and the growth performance of striped catfish. Abstrak Percobaan dilakukan untuk mengevaluasi pengaruh penambahan glutamin pada pakan terhadap struktur dan fungsi usus, serta kinerja pertumbuhan ikan patin Pangasius hypopthalmus. Ikan uji yang digunakan sebanyak 40 ekor dengan bobot awal 0,82 ± 0,01 g dipelihara dalam akuarium berukuran 60 × 50 × 40 cm dan volume air 70 L. Ikan diberi pakan uji dengan penambahan glutamin 0, 1, 2, dan 3%. Ikan diberi pakan uji secara at satiation selama 60 hari. Hasil penelitian menunjukkan bahwa ikan yang diberi pakan dengan penambahan glutamin 1% dan 2% secara signifikan menghasilkan kinerja pertumbuhan tertinggi, termasuk laju pertumbuhan spesifik, retensi protein, dan efisiensi pakan. Di sisi lain, pakan yang ditambah dengan glutamin 3% tidak signifikan memengaruhi kinerja pertumbuhan ikan. Ikan uji pada perlakuan glutamin 1% dan 2% menghasilkan struktur dan fungsi usus yang lebih baik dibanding perlakuan lainnya, yakni rasio panjang usus dengan panjang tubuh, luas permukaan vili dan aktivitas enzim protease. Disimpulkan bahwa penambahan glutamin 1% dan 2% pada pakan meningkatkan struktur dan fungsi usus serta kinerja pertumbuhan benih ikan patin.
Izhar Amirul Haq, Kukuh Nirmala, Yuni Puji Hastuti, Eddy Supriyono
Published: 28 February 2022
Jurnal Iktiologi Indonesia, Volume 22, pp 49-64; https://doi.org/10.32491/jii.v22i1.581

Abstract:
Guppies are ornamental fish that have economic value and can be cultivated. One of the problems in guppies cultivation is the poor quality of body color. The solution to this problem is to improve the environmental quality in guppy aquaculture. This study evaluates changes in color quality, behavioral response, and blood glucose levels of guppies using water immersion of Indian almond leaves on rearing media. Study was carried out using a completely randomized design consisting of five treatments. The rearing media was filled water with a total volume of 10 L from each treatment with different concentrations, namely, Control treatment (100% freshwater), A (75% freshwater + 25% Indian almond leaf water), B (50% freshwater + 50% Indian almond leaf), C (25% freshwater + 75% Indian almond leaf) and D (100% Indian almond leaf). Each treatment observed several test parameters such as color quality percentage, survival rate, chromatophores cells number, behavior, glucose levels, and the water physical-chemical parameters. Guppies' behavioral responses, in general, experienced an increasing change in each treatment for seven days. The highest color quality percentage by treatment D was 73.93±2.29%, and the highest glucose level was by the control treatment, which was 24.11±0.41 mg dL-1. The results of variance analysis showed that the water immersion of Indian almond leaves was significantly different on color quality, behavioral response, and blood glucose levels through Duncan's test (p<0.05). Abstrak Ikan guppy termasuk ikan hias yang memiliki nilai ekonomis dan dapat dibudidayakan. Salah satu masalah dalam budidaya ikan guppy yaitu kualitas warna tubuhnya yang tidak bagus. Upaya yang dapat dilakukan yaitu memperbaiki lingkungan budidaya ikan guppy. Studi ini bertujuan untuk mengevaluasi perubahan kualitas warna, respons tingkah laku, dan kadar glukosa ikan guppy menggunakan rendaman air daun ketapang pada media pemeliharaan. Evaluasi ini dilakukan dengan menggunakan rancangan acak lengkap yang terdiri atas lima perlakuan. Media pemeliharaan diisi air dengan total volume 10 L dari setiap perlakuan dengan konsentrasi yang berbeda yaitu, perlakuan Kontrol (100% air tawar), A (75% air tawar + 25% air daun ketapang), B (50% air tawar + 50% air daun ketapang), C (25% air tawar + 75% air daun ketapang) dan D (100% air daun ketapang). Setiap perlakuan diamati beberapa parameter uji seperti persentase kualitas warna, tingkat sintasan, jumlah sel kromatofora, tingkah laku, kadar glukosa, dan parameter fisik kimiawi perairan. Respons tingkah laku ikan guppy secara umum mengalami perubahan yang meningkat dalam setiap perlakuan selama tujuh hari. Persentase kualitas warna tertinggi pada perlakuan D yaitu sebesar 73,93±2,29% dan nilai kadar glukosa tertinggi pada perlakuan Kontrol yaitu 24,11±0,41 mg dL-1. Hasil analisis sidik ragam menunjukkan bahwa rendaman air daun ketapang berbeda nyata terhadap kualitas warna, respons tingkah laku dan kadar glukosa darah melalui uji Duncan (p0,05).
Hasnidar Hasnidar, Andi Tamsil, Hasrun Hasrun, Andi Muhammad Akram
Published: 28 February 2022
Jurnal Iktiologi Indonesia, Volume 22, pp 17-34; https://doi.org/10.32491/jii.v22i1.567

Abstract:
The high exploitation pressure and decreasing environmental conditions of Lake Tempe due to pollution, sedimentation, growth of aquatic weeds, and the presence of invasive alien fish, namely suckermouth catfish, are thought to have harmed one of the native fish, namely climbing perch (Anabas testudineus). The research aims to analyze the reproductive biology of climbing perch. Fish were caught using gill nets from January to April 2021. The total length of the fish was measured using a caliper (cm), and the weight (g) was measured using an analytical balance. Fish gonads were preserved in a 4% formalin solution. Fish fecundity was calculated based on the gravimetric method. The length distribution of male and female fish was 7.5 - 15.5 and 7.5 - 17.5 cm, respectively. The maximum climbing perch caught was 17.5 cm smaller than the maximum length ever caught, which was 35.0 cm, and the average size was 9.56 cm smaller than the average length of climbing perch, which was 12.5 cm. The ratio of male and female fish as a whole was 1.1: 0.9 or 53%: 47%, while the sex ratio of males and females in spawning was 38%: 62%. Climbing perch is polygamous, i.e., male fish have several partners in one spawning season. The spawning season lasted throughout the research period, with the spawning season's peak in February with a total spawner pattern. Fecundity ranged from 253-10,237 eggs with an average value of 2,571 eggs, and the relationship between length and weight with fecundity was very strong. The growth pattern of male and female fish was negative allometric. Abstrak Tekanan eksploitasi yang tinggi dan kondisi lingkungan Danau Tempe yang semakin menurun akibat pencemaran, sedimentasi, pertumbuhan gulma air, dan hadirnya ikan asing invasif, yaitu ikan sapu-sapu, diduga telah memberikan pengaruh buruk terhadap salah satu ikan asli yaitu ikan betok (Anabas testudineus). Penelitian bertujuan untuk menganalisis kondisi biologi reproduksi ikan betok. Ikan sampel ditangkap menggunakan jaring insang dari Januari-April 2021. Panjang total ikan diukur dengan jangka sorong (cm) dan bobot ditimbang (g) dengan timbangan analitik. Gonad ikan diawetkan dalam larutan formalin 4%. Fekunditas ikan dihitung berdasarkan metode gravimetrik. Sebaran ukuran panjang ikan jantan dan betina masing-masing 7,5 - 15,5 dan 7,5 - 17,5 cm. Panjang maksimum ikan betok yang tertangkap yaitu 17,5 cm lebih kecil dari panjang maksimum yang pernah tertangkap yaitu 35,0 cm, dan panjang rata-rata yaitu 9,56 cm lebih kecil dari panjang rata-rata ikan betok yaitu 12,5 cm. Nisbah ikan jantan dan betina secara keseluruhan sebesar 1,1 : 0,9 atau 53% : 47%; sedangkan nisbah kelamin jantan dan betina dalam pemijahan yaitu 38% : 62%. Ikan betok bersifat poligami yakni ikan jantan memiliki beberapa pasangan dalam satu musim pemijahan. Musim pemijahan berlangsung sepanjang bulan penelitian dengan puncak musim pemijahan pada Februari dengan pola pemijah serentak. Fekunditas berkisar antara 253- 10.237 telur dengan nilai rata-rata 2.571 telur. Hubungan panjang dan bobot dengan fekunditas sangat kuat.Pola pertumbuhan ikan jantan dan betina adalah allometrik negatif.
Nurul Azzahra Lukman, Andi Aliah Hidayani, Asmi Citra Malina, Alimuddin Alimuddin, Muhammad Fuadi
Published: 28 February 2022
Jurnal Iktiologi Indonesia, Volume 22, pp 1-15; https://doi.org/10.32491/jii.v22i1.568

Abstract:
Tilapia (Oreochromis niloticus) is one of the freshwater fish that is of great interest to the public, because its protein content is quite high, namely 55.58%. One of the problems in tilapia cultivation is that the need for feed is very high, where only 25% of the feed given is converted as a result of production and the rest is wasted as waste. This greatly affects the costs in the cultivation business. One alternative to overcome this problem is the use of Recombinant Growth Hormone (rGH). This study aimed to evaluate the effect of rGH administration on feed conversion ratio and survival of Tilapia (O. niloticus) given rGH through a combination method of submersion and feed rGH (oral boosting). The test animals used tilapia seeds with a size of 2-3 cm with 40 days of maintenance. A plastic jar with a volume of 10 L filled with 8 L of water and stocking density of 40 tilapia seeds. Test animals were given feed commercial made feed at a dose of 5% of body weight. This study used a completely randomized design (RAL) consisting of 4 treatments with 3 replications each, namely A (control), B (submersio), C (feed rGH oral boosting), and D (submersio+feed rGH oral boosting). The results showed that the effect of rGH administration gave the best results in treatment D, submersion+ feed rGH (oral boosting), the ratio feed conversion (FCR) was (0.77 ± 0.02) and survival rate was 92.50%. Provision of rGH through the combination method of submersion + feed rGH (oral boosting) can increase the efficiency of good utilization and high survival. Abstrak Recombinant Growth Hormone (rGH) merupakan salah satu metode alternatif untuk mengatasi masalah pertumbuhan dan tingginya kebutuhan pakan dalam budidaya ikan nila. Penelitian ini bertujuan untuk mengevaluasi pertumbuhan, nisbah konversi pakan dan sintasan benih ikan nila (O. niloticus) yang diberikan rGH melalui metode kombinasi perendaman dan pakan buatan. Ikan uji yang digunakan yaitu benih ikan nila ukuran 2-3 cm sebanyak 480 ekor dengan lama pemeliharaan 40 hari. Ikan dipelihara pada wadah plastik bening dengan volume 10 L yang diisi air sebanyak 8 L dengan padat tebar 40 ekor setiap wadahnya. Ikan diberi pakan buatan dengan dosis 5% dari bobot tubuh. Penelitian ini menggunakan rancangan acak lengkap yang terdiri atas 4 perlakuan dengan masing-masing 3 ulangan, yaitu A (kontrol), B (perendaman), C (pakan), dan D (kombinasi perendaman + pakan). Aplikasi rGH ke pakan buatan komersil dengan dosis 30 mL rGH dalam satu kg pakan, sementara untuk perendaman dengan dosis 100 mL larutan rGH untuk 120 ekor ikan dalam 10 L air. Hasil penelitian menunjukkan bahwa perlakuan perendaman + pakan rGH memberikan hasil yang terbaik, yaitu pertumbuhan spesifik sebesar 5,29 %/hari, nisbah konversi pakan sebesar (0,77 ± 0,02) dan sintasan 92,50%. Pemberian rGH dengan kombinasi perendaman dan oral berpotensi dalam meningkatkan produktivitas dan efisiensi biaya dalam budidaya ikan nila.
Siti Aslamyah, Zainuddin Zainuddin, Badraeni Badraeni
Published: 28 February 2022
Jurnal Iktiologi Indonesia, Volume 22, pp 77-91; https://doi.org/10.32491/jii.v22i1.583

Abstract:
The use of combinations of microorganisms as feed additives can synergize to produce enzymes to help the digestive process of feed. This study aims to determine the best combination of microorganisms as probiotics in feeding on growth performance, gastric evacuation, and blood glucose levels of milkfish. Milkfish with an initial weight of 9.21±0.14 g, reared at a density of 20 fish in an aquarium measuring 50 x 40 x 35 cm3 containing 48 L of water with 20 ppt salinity and equipped with a recirculation system. The research design was Completely Randomized Design with five treatments, namely: control (feed without microorganisms), Bacillus sp. and Lactobacillus sp., Rhizophus sp. and Aspergillus sp., Saccharomyces sp. and Trichoderma sp., and Mixed microorganisms, Bacillus sp., Lactobacillus sp., Rhizophus sp., Aspergillus sp., Saccharomyces sp., and Trichoderma sp. During 50 days of rearing, the fish were given experimental feed three times a day at 07.00, 12.00, and 15.00 at 5% body weight. The results showed that the treatment significantly affected growth, feed efficiency, and hepatosomatic index. However, it did not affect milkfish's survival and liver and muscle glycogen levels. Absolute growth (30.79±0.87 g), relative growth rate (333.91±5.83%), biomass growth (615.76±17.48%), feed efficiency (57.26±0.39 %), and the best hepatosomatic index (0.99±0.01) were obtained in the mixed microorganism treatment, and mg/g, and muscle 5.45-5.72 mg/g. The gastric evacuation rate and the fastest peak and peak decrease in blood glucose levels were obtained in the mixed microorganisms treatment at 5 and 3-4 hours postprandial. The diverse microorganisms can be added to the feed at a dose of 10 mL/kg to support the intensification of milkfish culture Abstrak Pemanfaatan kombinasi mikroorganisme sebagai aditif pakan dapat saling bersinergi menghasilkan enzim untuk membantu proses pencernaan pakan. Penelitian ini bertujuan menentukan kombinasi mikroorganisme terbaik sebagai probiotik dalam pakan terhadap kinerja pertumbuhan, laju pengosongan lambung, dan kadar glukosa darah ikan bandeng. Ikan bandeng dengan bobot awal 9,21±0,14 g dipelihara dengan kepadatan 20 ekor pada akuarium berukuran 50 x 40 x 35 cm3 yang berisi 48 L air bersalinitas 20 ppt dan dilengkapi sistem resirkulasi. Penelitian didesain dalam rancangan acak lengkap dengan lima perlakuan, yaitu: kontrol (pakan tanpa mikroorganisme), Bacillus sp. dan Lactobacillus sp., Rhizophus sp. dan Aspergillus sp., Saccharomyces sp. dan Trichoderma sp., serta kombinasi mikroorganisme Bacillus sp., Lactobacillus sp., Rhizophus sp., Aspergillus sp., Saccharomyces sp., dan Trichoderma sp. Selama 50 hari pemeliharaan, ikan diberi pakan percobaan 3 kali sehari yakni pukul 07.00, 12.00, dan 15.00 sebanyak 5% dari bobot badan. Hasil penelitian menunjukkan bahwa perlakuan berpengaruh nyata terhadap pertumbuhan, efisiensi pakan, dan indeks hepatosomatik. Namun, tidak berpengaruh terhadap sintasan, kadar glikogen hati dan otot ikan bandeng. Pertumbuhan mutlak (30,79±0,87 g), laju pertumbuhan relatif (333,91±5,83%), pertumbuhan biomassa (615,76±17,48%), efisiensi pakan (57,26±0,39%), dan indeks hepatosomatik (0,99±0,01) terbaik diperoleh pada perlakuan kombinasi mikroorganisme dan terendah pada kontrol. Kisaran sintasan yang dihasilkan 93,33-100%, glikogen hati 6,60-6,89 mg/g, dan otot 5,45-5,72 mg/g. Laju pengosongan lambung, serta mencapai puncak dan penurunan puncak kadar glukosa darah tercepat pada perlakuan kombinasi mikroorganisme pada jam ke 5 dan jam ke 3-4 post prandial. Untuk mendukung intensifikasi budidaya ikan bandeng, kombinasi mikroorganisme dapat ditambahkan dalam pakan dengan dosis 10 mL/kg pakan.
Ira Akhdiana, Muhammad Zairin Jr, Gadis Sri Haryani, Muhammad Agus Suprayudi
Published: 1 October 2021
Jurnal Iktiologi Indonesia, Volume 21, pp 253-265; https://doi.org/10.32491/jii.v21i3.590

Abstract:
This study aimed to evaluate the effect of the combination of estradiol-17β hormone and spirulina in feed on blood plasma biochemistry, histology, and gonad development of female bada fish (Rasbora argyrotaenia). The research method were an experimental study using a completely randomized design with four treatment combinations and four replications, namely without the addition of the estradiol-17β hormone and spirulina (P0), the addition of the estradiol-17β hormone at 7 g kg-1 feed (P1), the addition of spirulina at 30 g kg-1 feed (P2) and the addition of the estradiol-17β hormone at 7 g kg-1 feed and spirulina at 30 g kg-1 feed. Female bada fish (4.22±1.28 g) were kept in an aquarium measuring 100x50x50 cm3 with a density of seven individuals per aquarium. Fish were fed the treatment twice daily, with 3% of the biomass for six weeks. The test parameters were estradiol-17β hormone concentration, egg diameter, blood plasma glucose concentration, blood plasma total cholesterol concentration, and gonadal histology observations. The experimental results showed that the concentration of the estradiol-17β hormone in the body plasma of treatments P1 and P3 was statistically significantly different (P0.05) on blood plasma biochemistry and egg diameter of bada fish broodstock. A combination of estradiol-17β hormone and spirulina hormones in the feed resulted in better P1 and P3 treatments with higher plasma concentrations of the estradiol-17β hormone. Observations of gonadal development from histology showed that the bada fish gonads belonged to the asynchronous type.
Rosidah Rosidah, Yuniar Mulyani, Fittrie Mellianawaty Pratiwy, Afifah Shabirah, Juli A Sinaga
Published: 1 October 2021
Jurnal Iktiologi Indonesia, Volume 21, pp 291-304; https://doi.org/10.32491/jii.v21i3.593

Abstract:
This study aims to find out the right lactic acid bacteria (LAB) isolates to improve the common carp body's immune system against the attack of the Aeromonas hydrophila bacterium. Lactic Acid Bacteria (LAB) isolates were obtained from the organs of the common carp intestine. The study used a Completely Randomized Design consisting of four treatments and three replications. The treatment used was immersion of test fish for 24 hours in several isolates of LAB with a density of 108 cfu ml-1, namely A: without LAB isolate (control), B: isolate CcB7, C: isolate CcB8, D: isolate CcB15. Immersion is done three times with a frequency of seven days. Parameters observed included clinical symptoms, survival rate, red and white blood cell counts. The results showed the immersion of LAB isolate CcB15, namely Lactobacillus gasseri was most effective for increasing the body's resistance to Common Carp, which was demonstrated by mild clinical symptoms and faster recovery, high fish survival rate (83.33%), and number of cells the highest white blood count of 147,47x103 cell mm-3 (an increase in white blood cells by 38%).
Yusup A Jentewo, Roni Bawole, Tresia S Tururaja, Mudjirahayu Mudjirahayu, Zeth Parinding, Hendrikus R Siga, Muhammad Dailami, Abdul Hamid A Toha
Published: 1 October 2021
Jurnal Iktiologi Indonesia, Volume 21, pp 199-213; https://doi.org/10.32491/jii.v21i3.587

Abstract:
This study aims to determine the total length and scar condition of the body of whale sharks (Rhincodon typus) in Cendrawasih Bay National Park (TNTC), Papua-Indonesia. Photo-identification was used to identify individuals of the whale shark R. typus based on spot patterns behind the last gill slit of each individual. Photo-identification was also used to determine the scar of the whale shark. The total length of whale sharks were estimated based on the length of a snorkeller (assumed to be 1.6 m) swimming alongside the whale shark. We identified 21 individuals of R. typus. Of these 21 individuals, 14 were new sightings and seven were re-sightings that have been recorded in the previous photo collection database. R. typus ranged in size from 2 to 5 m total length (average 3.78 m, ±0,86, N= 21). Based on their size, all individuals of whale shark were categorized as juvenile. 52% of R. typus identified had scars and 38 % were not and 10% were unknown. The majority of whale sharks had amputation (12 individuals) and abrasion (7 individuals) scars. Scars occurred most often on the caudal fin and dorsal fin, five and four individuals respectively. This information is useful for understanding potential threats and designing better management programmes for R. typus conservation in TNTC.
Surianti Surianti, Hasrianti Hasrianti, Wahyudi Wahyudi, Muh Irwan
Published: 1 October 2021
Jurnal Iktiologi Indonesia, Volume 21, pp 267-276; https://doi.org/10.32491/jii.v21i3.591

Abstract:
Tilapia cultivation has the potential to be developed in Indonesia, especially in South Sulawesi. However, the obstacle faced in tilapia cultivation is feed; the price is relatively high because the raw materials are still imported. One of the efforts to overcome dependence on imported feed raw materials is using local raw materials, namely rice bran. This study aims to determine the best type of probiotic in hydrolyzing rice bran flour into artificial feed on survival and conversion ratio of tilapia fish feed. This research was conducted in Sidenreng Rappang Regency. The test animals used were tilapia larvae with an average size of 1.03 g. The maintenance container is a tarpaulin pond with a size of 1 m x 1 m x 1 m filled with 85 L of freshwater. The study was designed using a completely randomized design consisting of four treatments and three replications. The fermenting materials used as treatment were Bacillus sp., Lactobacillus sp., Aspergillus nigers, Yeast (Acetobacter). The test feed was given to 20 tilapia larvae stocked in each container for 60 days of rearing. The survival data and feed conversion ratio for tilapia were analyzed using analysis of variance (ANOVA). The results showed that tilapia fed fermented rice bran feed using the fermenter Lactobacillus sp. had a significant effect on survival (SR) with a value of 85% and the feed conversion ratio (FCR) of tilapia with a value of 2.23.
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