Jurnal Perikanan UNRAM (Universitas Mataram)
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CALCULATION OF RESISTANCE AND ENGINE POWER OF PURSE SEINE FISHING BOATS IN TAKALAR REGENCY USING MAXSURF SOFTWARE
Full text linkThe main factor in determining the power of a ship's main engine is the ship's resistance resulting from the shape of the ship's hull. Calculation of ship resistance can be done using software, namely Maxsurf Resistance, which can simulate the shape of a ship's hull under water. This research aims to determine the total resistance of a purse seine fishing vessel and the power required to move a 30 GT vessel. The design made from this ship model is then analyze to calculate the ship's resistance a nd the required engine power. The ship resistance calculation method uses the Holtrop method. This method is used because the hull of a 30 GT ship is a V-shaped model. From the results of the discussion, it is concluded that ship resistance can be seen from several speed variations produced by looking at the service speed of 30 GT fishing boats in the Takalar Regency area. From this research, the resistance value for speeds of 0-6 knots resulted in a resistance value of 1.4 kN and engine power of 5,861 hp. Then there is a significant need for engine power or power which occurs from a speed of 7 knots to 10 knots because the value of the ship's resistance continues to increase in line with the speed of the ship. At the maximum speed of a 30 GT purse seine fishing vessel of 10 knots, the total resistance of the vessel is 7.4 kN and the engine power required is 50.572 H.The main factor in determining the power of a ship's main engine is the ship's resistance resulting from the shape of the ship's hull. Calculation of ship resistance can be done using software, namely Maxsurf Resistance, which can simulate the shape of a ship's hull under water. This research aims to determine the total resistance of a purse seine fishing vessel and the power required to move a 30 GT vessel. The design made from this ship model is then analyze to calculate the ship's resistance a nd the required engine power. The ship resistance calculation method uses the Holtrop method. This method is used because the hull of a 30 GT ship is a V-shaped model. From the results of the discussion, it is concluded that ship resistance can be seen from several speed variations produced by looking at the service speed of 30 GT fishing boats in the Takalar Regency area. From this research, the resistance value for speeds of 0-6 knots resulted in a resistance value of 1.4 kN and engine power of 5,861 hp. Then there is a significant need for engine power or power which occurs from a speed of 7 knots to 10 knots because the value of the ship's resistance continues to increase in line with the speed of the ship. At the maximum speed of a 30 GT purse seine fishing vessel of 10 knots, the total resistance of the vessel is 7.4 kN and the engine power required is 50.572 H
THE INFLUENCE OF STOCKING DENSITIES ON WHITE SHRIMP (Litopenaeus vannamei) REARED USING INTENSIVE SYSTEM: PRODUCTION PERFORMANCE AND WATER QUALITY
Full text linkABSTRACT
The increasing trend of vaname shrimp cultivation production encourages farmers to increase their cultivation production. The success of vaname shrimp cultivation can be seen from the ability to measure the capacity of shrimp biomass in maintenance activities and stocking density patterns based on the maximum capacity of the pond in each plot. The purpose of this study was to analyze vaname shrimp cultivation activities for a period of 2 years (2023-2024) in intensive system ponds based on different stocking density patterns at 140 shrimp/m2 and 190 shrimp/m2. This study was carried out for 6 cultivation cycles, each cycle was carried out for 100 days. The results of statistical tests showed that the shrimp stocking density pattern had a significant effect (p <0.05) on biomass, productivity, survival and feed conversion ratio. The average survival rate of 140 shrimp/m2 stocking density was 85.33%, biomass was 3,327.75 kg, FCR was 1.44 and productivity was 30.8 tons/ha. The average survival rate with a stocking density of 190 shrimp/m2 was 73.66%, biomass 1,981.87 kg, FCR 1.59 and productivity 12.38 tons/ha. This shows that biomass, SR, and productivity decreased while FCR tended to increase in cultivation with a stocking density of 190 shrimp/m2. The results of water quality showed an increase in the Total Organic Matter value of 110-250 mg/l at a stocking of 190 shrimp/m2. This shows that there is an increase in organic matter in the maintenance pond which affects the survival of shrimp in the pond so that it affects the biomass and productivity of whiteleg shrimp. A stocking density of 140 shrimp/m2 can be recommended for application in intensive whiteleg shrimp cultivation.
Keywords: intensive system, stocking density, water quality, whiteleg shrim
NUTRITIONAL ANALYSIS OF KOMO TUNJABI (Euthynnus affinis) SAMOSA FORTIFIED WITH SEAWEED Gracilaria sp.
No full textREADINESS FOR CLIMATE CHANGE: AN ANALYSIS OF SMALL-SCALE FISHERMEN IN TASIKMALAYA, WEST JAVA
Full text linkPerubahan iklim merupakan tantangan signifikan yang dapat berdampak pada berbagai sektor, termasuk pada sektor perikanan. Penelitian ini bertujuan untuk mengetahui tingkat kesiapsiagaan nelayan, khususnya nelayan skala kecil di Kabupaten Tasikmalaya dalam menghadapi berbagai dampak yang diakibatkan oleh adanya perubahan iklim. Metode penelitian yang digunakan adalah survei kuantitatif dan kualitatif yang melibatkan wawancara mendalam dengan nelayan setempat sebanyak 41 orang, observasi partisipatif, dan analisis data sekunder. Hasil penelitian menunjukkan bahwa tingkat kesiapsiagaan nelayan skala kecil di PPI Pamayangsari Kabupaten Tasikmalaya berada pada kategori siap dengan nilai indeks sebesar 79,2%. Indikator kesiapsiagaan dengan nilai indeks tertinggi adalah sistem peringatan bencana sebesar 95%, dan yang terendah adalah mobilisasi sumber daya sebesar 66%. Harapannya terdapat analisis lebih lanjut mengenai dampak sosial ekonomi terhadap rumah tangga nelayan, seperti perubahan mata pencaharian, migrasi, pendidikan, dan perubahan peran gender sebagai respon terhadap perubahan iklim.Climate change is a significant challenge that impacts various sectors, including fisheries. This study aims to determine the level of preparedness of fishermen, especially for small-scale fishermen in Tasikmalaya District in facing various impacts caused by climate change. The research method used is a quantitative and qualitative survey involving in-depth interviews with 41 local fishermen, participatory observation, and secondary data analysis. The results of the study indicate that the level of preparedness of small-scale fishermen in PPI Pamayangsari Tasikmalaya District is in the ready category with an index value of 79.2%. The preparedness indicator with the highest index value is the disaster warning system at 95%, and the lowest is resource mobilization at 66%. It is hoped that there will be further analysis of the socio-economic impacts on fishing households, such as changes in livelihoods, migration, education, and changes in gender roles in response to climate change
FEEDING HABITS AND GONAD MATURITY LEVELS OF MACKEREL (Scomberomorus commerson) LANDED AT THE RENGAS RIVER COASTAL FISHING PORT
Full text linkCoastal Fishing Port (PPP) is a landing place for fish caught by fishermen, including pelagic fish. The production of mackerel catches in the Rengas River PPP has decreased from 2012 to 2021. Due to the decline in mackerel fish catch production, research related to the reproduction of mackerel is needed. The aim of this research is to analyze eating habits, TKG, IKG, and IHS. The fish sampling method was carried out using the purposive sampling method. Sampling of 20 mackerel fish is carried out once a month. Mackerel fish are carnivorous fish, which can be seen from the type of mackerel mouth, namely terminal, the shape of the mackerel fish's teeth, which are canine-like, and the fish's gill filter, which is large and has few filaments. The average length of a mackerel fish's intestines is 0.59 cm of its body length, so it is classified as a carnivorous fish. The level of maturity of male gonads was highest in TKG IV and female gonads in TKG II, the average IKG of male gonads was 0.96%, and female gonads 1.13%. The liver of female mackerel fish (Scomberomorus commerson) experiences changes in weight as measured by the Hepatosomatic Index along with increasing egg growth based on TKG.Pelabuhan Perikanan Pantai (PPP) merupakan tempat pendaratan ikan yang ditangkap nelayan diantaranya kelompok ikan pelagis. Produksi tangkapan ikan tenggiri di PPP Sungai Rengas mengalami penurunan dari tahun 2012 hingga 2021. Oleh karena adanya penurunan produksi tangkapan ikan tenggiri diperlukan adanya penelitian yang berhubungan dengan reproduksi dari ikan tenggiri. Tujuan penelitian ini menganalisis kebiasaan makan, TKG, IKG, dan IHS. Metode pengambilan sampel ikan di lakukan dengan metode purposive sampling. Pengambilan sampel ikan tenggiri dilakukan 1 kali dalam sebulan sebanyak 20 ekor ikan tenggiri. Ikan tenggiri termasuk ikan karnivora dapat dilihat dari tipe mulut ikan tenggiri yaitu terminal, bentuk gigi ikan tenggiri yaitu canine-like, dan tapis insang ikan yang berukuran besar dan filamennya yang sedikit. Panjang rata-rata usus ikan tenggiri adalah 0,59 cm dari panjang tubuhnya sehingga tergolong sebagai ikan karnivora. Tingkat kematangan gonad jantan terbanyak pada TKG IV dan gonad betina pada TKG II, rata-rata IKG gonad jantan adalah 0,96%, dan gonad betina 1,13%. Hati ikan tenggiri betina (Scomberomorus commerson) mengalami perubahan peningkatan bobotnya yang diukur melalui Indeks Hepatosomatik seiring dengan meningkatnya pertumbuhan telur berdasarkan TKGnya
HISTOPATHOLOGIC FEATURES OF HEPATOPANCREAS INFECTED WITH Vibrio parahaemolyticus IN VANNAMEI SHRIMP (Litopenaeus vannamei)
Full text linkShrimp farming faces a major problem, which is the disease caused by Vibrio parahaemolyticus infection, leading to vibriosis and damage to the shrimp's hepatopancreas. This study aims to analyze the pathological changes that occur in the tissues and organs of vannamei shrimp due to Vibrio parahaemolyticus infection using histopathological testing methods. The research findings show that this bacterial infection causes damage to the hepatopancreas, including hemocyte infiltration, melanization, sloughing, necrosis, and bacterial colonization. This damage is caused by toxins produced by Vibrio parahaemolyticus, leading to the degeneration of cells and tissues. This study provides important information that can be used to develop prevention and treatment strategies for diseases in vannamei shrimp farming, as well as enhance understanding of the impact of bacterial infection on the hepatopancreas organ of shrimp.Shrimp farming faces a major problem, which is the disease caused by Vibrio parahaemolyticus infection, leading to vibriosis and damage to the shrimp's hepatopancreas. This study aims to analyze the pathological changes that occur in the tissues and organs of vannamei shrimp due to Vibrio parahaemolyticus infection using histopathological testing methods. The research findings show that this bacterial infection causes damage to the hepatopancreas, including hemocyte infiltration, melanization, sloughing, necrosis, and bacterial colonization. This damage is caused by toxins produced by Vibrio parahaemolyticus, leading to the degeneration of cells and tissues. This study provides important information that can be used to develop prevention and treatment strategies for diseases in vannamei shrimp farming, as well as enhance understanding of the impact of bacterial infection on the hepatopancreas organ of shrimp
SEAWEED (Gracilaria sp.) AS A PHYTOREMEDIAN FOR WASTE WATER FROM INTENSIVE PONDS FOR VANAMEI SHRIMP (Litopenaeus vannamei) IN LUWU REGENCY
Full text linkSanitizing the water environment in vanamei shrimp (Litopenaeus vannamei) ponds will increase shrimp growth and improve the economy. Obstacles in aquaculture are the decreasing quality of production results and decreasing water quality. A biofilter is needed as a phytoremediation to reduce the high ammonia content from leftover feed and feces. The main component of this technology is seaweed (Gracilaria sp.) as a living technology that provides services in overcoming environmental problems. Therefore, phytoremediation technology can be used to manage nutrient and water dynamics; This can result in significant improvements in water quality as well as the restoration of degraded ecosystems. The aim of the research was to determine the effect of differences in density of Gracilaria sp. as a phytoremedian in the cultivation system to reduce the ammonia (NH3) content of shrimp pond wastewater in Batu Lotong, South Larompong District, Luwu Regency, South Sulawesi. The research used a completely randomized design (CRD) with 4 treatments and 3 repetitions. The results of measurements in the experiment showed that the highest ammonia (NH3) content in treatment D (0 g seaweed) ranged from 0.0074 mg/L - 0.0335 mg/L and the lowest in treatment A (100 g seaweed) ranged from 0.0032 mg/L-0.0335 mg/L. Specific growth rate of daily weight of seaweed Gracilaria sp. in treatment A (2.95%) per day, B (2.59%) per day, C (1.81%) per day, and D (0%) control / not given seaweed. This shows that the difference in density of the seaweed Gracilaria sp. as a phytomedian in the cultivation system, it has an effect on reducing the ammonia (NH3) content and the daily specific growth rate of the seaweed Gracilaria sp. The Anova statistical test shows that the seaweed Gracilaria sp has a real influence on reducing the ammonia (NH3) content in pond water (F.hit > f table 5%).Sanitasi lingkungan perairan tambak udang vanamei (Litopenaeus vannamei) akan meningkatkan pertumbuhan udang dan peningkatan ekonomi. Kendala dalam budidaya perairan adalah menurunnya kualitas hasil produksi dan penurunan kualitas air. Dibutuhkan biofilter sebagai fitoremidiasi untuk mengurangi kandungan amoniak yang tinggi dari sisa pakan dan feses. Komponen utama dari teknologi ini adalah rumput laut (Gracilaria sp.) sebagai teknologi hidup yang memberikan layanan dalam mengatasi permasalahan lingkungan. Oleh karena itu, teknologi fitoremediasi dapat digunakan untuk mengelola dinamika unsur hara dan air; Hal ini dapat menghasilkan peningkatan kualitas air yang signifikan serta pemulihan ekosistem yang terdegradasi. Tujuan penelitian adalah untuk mengetahui pengaruh perbedaan kepadatan Gracilaria sp. sebagai fitoremedian dalam sistem budidaya terhadap penurunan kandungan amonia (NH3) limbah air tambak udang di Batu Lotong, Kecamatan Larompong Selatan, Kabupaten Luwu, Sulawesi Selatan. Penelitian Menggunakan Rancangan Acak Lengkap (RAL) dengan 4 perlakuan 3 kali pengulangan. Hasil pengukuran pada percobaan menunjukkan bahwa kandungan amonia (NH3) tertinggi pada perlakuan D (0 g rumput laut) berkisar 0,0074 mg/L - 0,0335 mg/L dan terendah pada perlakuan A (100 g rumput laut) berkisar 0,0032 mg/L-0,0335 mg/L. Laju pertumbuhan spesifik bobot harian rumput laut Gracilaria sp. pada perlakuan A (2,95) % per hari, B (2,59 %) per hari, C (1,81 %) per hari, dan D (0 %) kontrol / tidak diberi rumput laut. Hal ini menunjukkan bahwa perbedaan pemberian kepadatan rumput laut Gracilaria sp. sebagai fitoremedian pada sistem budidaya berpengaruh terhadap penurunan kandungan amonia (NH3) dan laju pertumbuhan spesifik harian rumput laut Gracilaria sp
STUDY OF THE QUALITY OF THE WATER ENVIRONMENT FOR SEAWEED (Eucheuma cottonii) CULTIVATION ON LEMUKUTAN ISLAND, BENGKAYANG REGENCY
Full text linkBengkayang Regency is one of the potential areas for the development of seaweed cultivation in the waters of Lumukutan Island, seaweed cultivation cages are spread in the waters of Lemukutan Island located in the West Coast area which is very possible for the development of seaweed cultivation of the Euchema cottonii type. This study aims to determine the quality of the aquatic environment for seaweed cultivation, the suitability of water quality for seaweed cultivation Euchema cottonii on Lemukutan Island, Bengkayang Regency. The method used is a survey method consisting of 3 stations. Sampling with a direct measurement stage in the field, sampling was carried out for 3 months as much as 4 times in a period of 10 days, The results of this study The quality of the aquatic environment for seaweed cultivation that is in accordance with the Quality Standards, namely temperature parameters, depth is only found at station one, current speed, salinity, pH and DO, for the suitability of the quality of the aquatic environment of the cages for seaweed cultivation at stations one, two and three criteria are appropriate.Bengkayang Regency is one of the potential areas for the development of seaweed cultivation in the waters of Lumukutan Island, seaweed cultivation cages are spread in the waters of Lemukutan Island located in the West Coast area which is very possible for the development of seaweed cultivation of the Euchema cottonii type. This study aims to determine the quality of the aquatic environment for seaweed cultivation, the suitability of water quality for seaweed cultivation Euchema cottonii on Lemukutan Island, Bengkayang Regency. The method used is a survey method consisting of 3 stations. Sampling with a direct measurement stage in the field, sampling was carried out for 3 months as much as 4 times in a period of 10 days, The results of this study The quality of the aquatic environment for seaweed cultivation that is in accordance with the Quality Standards, namely temperature parameters, depth is only found at station one, current speed, salinity, pH and DO, for the suitability of the quality of the aquatic environment of the cages for seaweed cultivation at stations one, two and three criteria are appropriate
DETECTION OF INFECTIOUS MYONECROSIS VIRUS (IMNV) IN LITOPENAEUS VANNAMEI USING NESTED REVERSE TRANSCRIPTION-POLYMERASE CHAIN REACTION (PCR) AT PT. CENTRAL PROTEINA PRIMA SIDOARJO EAST JAVA
Full text linkIncreased production and stocking density have elevated the risk of viral diseases, which can lead to significant economic losses. This study aimed to detect the presence of Infectious Myonecrosis Virus (IMNV) in vannamei shrimp using the Nested Reverse Transcription-Polymerase Chain Reaction (nRT-PCR) method. 54 vannamei shrimp samples from various regions in Indonesia were tested to detect the presence of IMNV. The test results showed 2 samples were detected positive for IMNV, namely samples from Central Kalimantan and East Java. The test results were confirmed and reinforced by other supporting factors that influence the spread or occurrence of IMNV disease infection in the sample's region of origin. This study highlights the importance of routine IMNV surveillance using sensitive molecular methods to control disease spread and protect the shrimp aquaculture industry in Indonesia.Peningkatan produksi dan kepadatan tebar telah meningkatkan risiko penyakit virus yang dapat menyebabkan kerugian ekonomi signifikan. Penelitian ini bertujuan untuk mendeteksi keberadaan IMNV pada udang vannamei menggunakan metode Nested Reverse Transcription-Polymerase Chain Reaction (nRT-PCR). 54 sampel udang vannamei dari berbagai wilayah di Indonesia dilakukan uji untuk mendeteksi keberadaaan IMNV. Hasil uji menunjukkan 2 sampel terdeteksi positif IMNV yaitu sampel Kalimantan Tengah dan Jawa Timur. Hasil pengujian dikonfirmasi dan diperkuat dengan faktor pendukung lainnya yang mempengaruhi penyebaran atau terjadinya infeksi penyakit IMNV di wilayah asal sampel. Penelitian ini menyoroti pentingnya surveilans rutin IMNV menggunakan metode molekuler yang sensitif untuk mengendalikan penyebaran penyakit dan melindungi industri akuakultur udang di Indonesia
EFFECTIVENESS OF PAPAYA JUICE ADDITION (Carica papaya L.) WITH DIFFERENT DOSES ON COLOR BRIGHTNESS LEVELS AND LIFE VERSITY OF KOI FISH (Cyprinus rubrofuscus)
Full text linkIkan koi ( Cyprinus rubrofuscus ) merupakan salah satu jenis ikan hias air tawar yang sangat populer dan digemari oleh masyarakat, ikan ini dikenal karena keindahan warnanya yang bervariasi, seperti merah, putih, kuning dan hitam. Keindahan warna menjadi salah satu faktor utama yang menentukan harga jual ikan hias di pasaran. Para pembudidaya ikan hias sering mengalami permasalahan warna pada ikan hias yang kurang menarik. Penambahan sumber karotenoid pada pakan mampu mempengaruhi terbentuknya warna pada ikan hias. Tujuan dari penelitian yaitu untuk mengetahui pengaruh dan dosis yang tepat dari penambahan sari buah pepaya (Carica papaya L.) pada pakan dengan pemberian dosis yang berbeda terhadap tingkat kecerahan warna dan kelangsungan hidup ikan koi ( Cyprinus rubrofuscus ). Penelitian ini berbentuk penelitian eksperimental dengan percobaan menggunakan RAL yang terdiri dari 5 perlakuan serta diulang sebanyak 3 kali. Perlakuan A (kontrol), perlakuan B (10 ml/kg pakan), perlakuan C (20 ml/kg pakan), perlakuan D (30 ml/kg pakan) dan perlakuan E (40 ml/kg pakan). Hewan uji yang dipakai saat penelitian yaitu benih ikan koi ukuran 4-5 cm sebanyak 150 ekor, dengan tebar padat 1 ekor/ 2 liter udara. Pemeliharaan dilaksanakan selama 30 hari dengan frekuensi pemberian pakan 3 kali sehari sebesar 5% dari berat tubuh ikan. Sari buah pepaya diberikan dengan cara disemprotkan pada pakan sesuai dosis masing-masing perlakuan. Hasil penelitian menunjukkan bahwa penambahan sari buah pepaya dengan dosis berbeda tidak berpengaruh terhadap warna dan kelangsungan hidup ikan koi ( Cyprinus rubrofuscus ). Nilai kecerahan tertinggi diperoleh pada perlakuan E dengan penambahan sari buah pepaya sebanyak 40 ml/kg pakan.Ikan koi (Cyprinus rubrofuscus) merupakan salah satu jenis ikan hias air tawar yang sangat digemari dan digemari oleh masyarakat, ikan ini dikenal dengan keindahan warnanya yang bervariasi, seperti merah, putih, kuning dan hitam. Keindahan warna menjadi salah satu faktor utama yang menentukan harga jual ikan hias di pasaran. Petani ikan hias sering mengalami permasalahan warna pada ikan hias yang kurang menarik. Penambahan sumber karotenoid pada pakan dapat mempengaruhi pembentukan kecerahan warna pada ikan hias. Tujuan penelitian adalah untuk mengetahui pengaruh dan dosis yang tepat dari penambahan sari buah pepaya (Carica papaya L.) pada pakan dengan pemberian dosis yang berbeda terhadap tingkat kecerahan warna dan kelangsungan hidup ikan koi (Cyprinus rubrofuscus). Penelitian ini merupakan penelitian eksperimen dengan percobaan menggunakan RAL yang terdiri dari 5 perlakuan dan diulang sebanyak 3 kali. Perlakuan A (kontrol), perlakuan B (10 ml/kg pakan), perlakuan C (20 ml/kg pakan), perlakuan D (30 ml/kg pakan) dan perlakuan E (40 ml/kg pakan). Hewan uji yang digunakan selama penelitian adalah benih ikan koi ukuran 4-5 cm sebanyak 150 ekor, dengan padat tebar 1 ekor/2 liter air. Pemeliharaan dilakukan selama 30 hari dengan frekuensi pemberian pakan 3 kali sehari sebanyak 5% dari bobot tubuh ikan. Pemberian sari buah pepaya dilakukan dengan cara disemprotkan pada pakan sesuai dosis masing-masing perlakuan. Hasil penelitian menunjukkan bahwa penambahan sari buah pepaya dengan dosis yang berbeda tidak berpengaruh terhadap warna dan kelangsungan hidup ikan koi (Cyprinus rubrofuscus). Nilai kecerahan tertinggi diperoleh pada perlakuan E dengan penambahan sari buah pepaya sebanyak 40 ml/kg pakan