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INDONESIA
Jurnal Perikanan Universitas Gadjah Mada
Published by Universitas Gadjah Mada
ISSN : 08536384     EISSN : 25025066     DOI : -
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology
Jurnal Perikanan Universitas Gadjah Mada are published to promote a critical review of the various investigative issues of interest in the field of fisheries between the researchers, academics, students and the general public, as a medium for communication, dissemination, and utilization of wider scientific activities.
Arjuna Subject : -
Articles 465 Documents
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PENGARUH SUHU AIR TERHADAP DAYA TETAS TELUR DAN PERKEMBANGAN LARVA NILA MERAH (Oreochromis sp.) Rustadi Rustadi
Jurnal Perikanan Universitas Gadjah Mada Vol 4, No 2 (2002)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.8908

Abstract

Artificial incubations of red tilapia eggs and fry were conducted in the effort to increase fish seed production and its quality. These experiments were done to determine suitable water temperature for egg incubation and larvae rearing. Four different water temperature­s, 24, 27, 30, and 33oC with variance 1oC and ambient temperature were tested in triplicates. One liter of plastic incubators made from soft drink bottles were set to water re-circulation system and provided with filter means.The fertilized eggs were stocked at 150 eggs. The hatching rate of egg increased as the increase of water temperature. The increase of water temperature decreased the incubation time of eggs, but increased hatching rate and the growth of larvae. The optimum water temperature was 29,87oC. 
Pengaruh Suplementasi Probiotik A3-51 terhadap Derajat Imunitas Oreochromis niloticus Didasarkan pada Angka Kuman pada Ginjal Setelah Uji Tantang dengan Aeromonas hydrophila dan Aeromonas salmonicida achromogenes Agus Irianto; Hernayanti Hernayanti; Ning Iriyanti
Jurnal Perikanan Universitas Gadjah Mada Vol 8, No 2 (2006)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.126

Abstract

Objectives of this research was to know the effect of probiotic A3-51 supplementation on food to the total number of bacteria in kidney and mortality of Oreochromis niloticus after challenge test with Aeromonas hydrophila and Aeromonas salmonicida achromogenes. This research was consisted of two experiment, the first was to know the highest immunity level of fish based on the number of macrophage and its phagocytic activity. Meanwhile, the second was to know the immunity level of fish challenged with A. hydrophila and A. salmonicida achromogenes by intra-peritoneal injection. The experiment used Completely Randomized Design in triplicates. The result from the first experiment showed that the highest non spesific immune system response, by means number of macrophage, was found 21 days treatment. The second experiment showed that the highest total number of bacteria in kidney and mortality level were 20.23 x 108 cells/g and 46.67%, respectively, both was found in control fish injected intra-peritoneally with A. salmonicida achromogenes.
Evaluasi Laju Pertumbuhan, Keragaman Genetik Dan Estimasi Heterosis pada Persilangan Antar Spesies Ikan Patin (Pangasius sp.) Didik Ariyanto; Retna Utami
Jurnal Perikanan Universitas Gadjah Mada Vol 8, No 1 (2006)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.167

Abstract

Thai catfish (Pangasius sp.) is one of the most popular cultured catfish in Indonesia. There are 2 species Thai catfish i.e. P. hypopthalmus which introduced from Thailand in 1972 and P. djambal an endogenous Indonesian fish. The aims of this research were to evaluate the growth rate, genetic variability and heterosis estimacy on interspecific crossing of these species. The result showed that the growth rate of F1 P. hypopthalmus X P. djambal was better than its parents. Genetic variability of P. hypopthalmus, P. djambal and their hybrids were 12.54, 12.38, and 27.02, respectively, and heterosis estimacy of their hybrids on growth (length and weight) were in high categories about 48.98-257.90%.
IDENTIFIKASI BAKTERI PATOGEN PADA KUDA LAUT (Hippocampus kuda) DI BALAI BUDIDAYA LAUT, LAMPUNG Yudha Trinoegraha Adiputra; Triyanto Triyanto; Namastra Probosunu
Jurnal Perikanan Universitas Gadjah Mada Vol 7, No 1 (2005)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.9064

Abstract

Sea horse (Hippocampus kuda) is one of the ornamental marine organisms and raw material of traditional medicine. Since 1993, Seafarming Development Centre, Lampung has pioneered a research and  culture  of sea horse in Indonesia. The serious problem in the culture of sea horse is pathogenic bacteria caused death of juveniles and broodstocks. The objective of this study was to identify pathogenic bacteria isolated from  sea horse in Seafarming Development Centre. Koch Postulate test was carried out, and then the pathogenic bacteria were identifed by morphological and biochemical tests. Results showed that from a total of 6 bacterial strains isolated from diseased sea horse, 3 strains were pathogenic bacteria to sea horse. These 3 pathogenic bacteria caused identical disease signs with the initial disease signs when the bacteria were isolated.  Morphological and biochemical tests suggested that  the pathogenic bacteria could be identified to be Vibrio fluvialis, V. alginolyticus and V. hollisae. 
ANALISIS KERAGAMAN BENTUK TUBUH IKAN NILA STRAIN GIFT PADA TIGA TINGKATAN UMUR YANG BERBEDA D. Ariyanto
Jurnal Perikanan Universitas Gadjah Mada Vol 4, No 1 (2002)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.8871

Abstract

A study aimed to identify morphology variability of nile tilapia (Oreochromis niloticus) strain GIFT (Genetic Improvement of Farmed Tilapia) by using standard measurement and multivariate analysis method was conducted. Elevan characters were measured at 141 fishes representing 3 levels of age (0-3 month, 3-6 month and more than 6 month) of nile tilapia strain GIFT. Multivariate analysis of variance (manova) and Pricipal Component Analysis (PCA) were applied to explore the morphological variability.The result showed that body shape of fry (0-3 month of age) was different from fishes with 3-6 month of age (consumption size), also from the broodstock. At the early level of age, development of the body shape was growth in width and length. At the consumption size and broodstock levels, the development of body shape was growth in fat too. 
Perbandingan Efikasi Vaksin Produk Intra- dan Ekstraseluler Aeromonas Hydrophila untuk Menanggulangi Penyakit Motile Aeromonas Septicemia (Mas) pada Lele Dumbo (Clarias sp.) Dini Siswani Mulia; Cahyono Purbomartono
Jurnal Perikanan Universitas Gadjah Mada Vol 9, No 2 (2007)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.27

Abstract

The aims of this research were to evaluate the eficacy of intra- and extracellular products vaccines of Aeromonas hydrophila to control Motile Aeromonas Septicemia (MAS) in catfish (Clarias sp.). Catfish with 10-13 cm of total length were used for the experiment with three treatments in five replicates. The treatments were vaccinations with (1) A: intracellular product of A. hydrophila; (2) B: extracellular product of A. hydrophila; (3) without vaccination (control). Vaccination was conducted by intramuscular injection of 5 µg protein/fish (each fish was injected with 0.1 ml of vaccine). Booster was conducted one week after vaccination. The challenge test was conducted two weeks after booster. The results showed that the survival rate, Relative Percent Survival (RPS), and antibody titer of A treatment was significantly different (PA. hydrophila (A treatment) reached 85.33 and 82.26%, respectively. The highest antibody titer was 1843.2 which was obtained by the A treatment. The results suggested that intracellular product vaccine of A. hydrophila was more effective than extracellular product vaccine.
PENGARUH DEASETILASI DAN ALKALINASI TERHADAP KARAKTERISTIK KARBOKSIMETIL KITOSAN Yusro Nuri Fawzya; Rina Novianty; Singgih Wibowo
Jurnal Perikanan Universitas Gadjah Mada Vol 10, No 1 (2008)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.8929

Abstract

Carboxymethyl chitosan (CMCts) is one of the chitosan derivatives produced by the carboxymethylation process of chitosan. Compared to chitosan which is soluble in weak acid, the CMCts is soluble in water and it becomes more desirable in many applications both in pharmaceutical and food industries. Chitosan as the raw material of CMCts was made from chitin deacetylation. The reasearch aimed to study the effect of chitin deacetylation methods and concentrations of sodium hydroxide in the alkalination process on the characteristics of CMCts produced. Three deacetylation processes were applied in the production of chitosan, i.e. treatment with 60% NaOH at 70oC for 2 and 3 days, and treatment with 60% NaOH at ambient for 5 days. Whereas, the alkalination process was conducted using NaOH at the concentrations of 20, 30, 40 and 50%. The carboxymethylation of chitosan was carried out using monochloroacetic acid with the ratio of chitosan to monochloroacetic acid of 1 : 1.5 (w/w) at 50oC for an hour. The results showed that the CMCts produced had solubilitiy of 27.0 to 98,1% and viscosity of 28 to 265 cPs. Based on the solubility and viscosity, the best treatment was found on using chitosan which had been deacetylated with 60% NaOH at 70oC for 3 days followed by alkalination using NaOH of 30% before carboxymethylation. The treatment resulted CMCts with water solubility 98.1%, viscosity 265 cPs and yield 72.2%.
PENENTUAN JARAK TANAM OPTIMAL ANTAR RUMPUN BIBIT PADA METODE VERTIKULTUR RUMPUT LAUT Petrus R Pong-Masak; Nelly H Sarira
Jurnal Perikanan Universitas Gadjah Mada Vol 20, No 1 (2018)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1294.972 KB) | DOI: 10.22146/jfs.33310

Abstract

Kappaphycus alvarezii cultivation by the verticulture method has been introduced since 2013. However, scientific studies on some technical aspects are still needed to improve the quality, quantity, and continuity of production and utilization of area in a maximum and productive manner. One of them is the planting distance between seed clumps. The purpose of this study was to determine the optimal planting distance between seed clumps on seaweed verticulture method. Seaweed was cultured using a 10x10 m2 floating raft containing 36 vertical nets of 5x2 m2/net. Seaweed seeds with an initial weight of 50 g were tied to a vertical net with a distance between knot on the verticulture net of 15 cm, 25 cm, and 35 cm. Seaweed cultivation was done for 3 cycles (1 cycle = 45 days) continuously in the cycle of planting season. The experimental units were prepared with Completely Randomized Design (RAL) with 3 replications. The results showed that daily growth rate (DGR) and carrageenan content of seaweed planted with a distance of 15 cm, 25 cm, and 35 cm between clumps were not significantly different (P>0.05). However, it is recommended to apply 25 cm distance between seed clumps in the verticulture method.
PENAMBAHAN METIL TESTOSTERON DALAM PAKAN UNTUK MEMACU PERTUMBUHAN NILA MERAH (Oreochromis sp.) Susilo Budi Priyono
Jurnal Perikanan Universitas Gadjah Mada Vol 5, No 2 (2003)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.9034

Abstract

The experiment was carried out to know the effect of supplemental dietary 17 methytetosterone (MT) on growth enhancement of red tilapia (Oreochromissp.). Fry smaller than 14 mm was given MT at 0 (control) and 60 mg/kg of feed for 28 days for masculinization. After masculinization, the fish were fef with MT at 0 (control), 1, 5, and 10 mg/kg of feed for 60 days to enhance the growth. The results showed that masculinization using MT at high dosage (60 mg/kg) was able to produce 96% of males fry at low dosage (1 – 10 mg/kg) also enhanced the growth of fishes. The highest growth rate 30% was observed at 10 mg MT/kg of feed. The growth enhancement was more effective in masculinized fry.
APLIKASI MINYAK CENGKEH SEBAGAI OBAT BIUS PADA KAKAP PUTIH (Lates calcarifer Bloch) Bambang Hanggono
Jurnal Perikanan Universitas Gadjah Mada Vol 8, No 1 (2006)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.157

Abstract

The objective of this study was to determine the safety and efficacy of clove oil as an anesthetic in sea bass (Lates calcarifer) and the potential application of clove oil as anesthetic to facilitate the sea bass fry transportation. Acute toxicity test indicated the 24-hr LC50 value of clove oil in sea bass fry as 30 ppm with slope function of 1.079 (1.05 to 1.107). In efficacy test, fish were exposed to 5, 10, 15, 20 and 25 ppm of clove oil for 15 minutes. At 5 ppm, clove oil caused only sedation effect (partial loss of reaction to external stimuli) while at 20 ppm, fish entered anesthesia stage (failure to respond to external stimuli) within about 3 minutes. Fish recovered from a 15-min period of exposure in 20 ppm clove oil within less than 10 minutes following removal from the anesthetic solution. There was neither mortality nor abnormal behavior of fish during 15-min exposure of clove oil as well as during 7 days post recovery from anesthesia. The potential application of clove oil as an aid in the transport of sea bass fry in plastic bag was also investigated. At 5 ppm, clove oil could reduce activities of the fish without loss of equilibrium (sedation stage) during the 4 hour simulated transport at 50 fish per 1,000 ml sea water (15 ppt). At 20 ppm, clove oil caused loss of equilibrium in fish resulting in the anesthesia stage throughout the 4 hour period. However, there was no improvement on survival rate and fish behavior with the use of clove oil during and after this 4 hour transport. Simulated transport at 50 fish per 500 ml sea water (15 ppt) for 8 hour did show better significant survival rate with additional of 5 and 20 ppm clove oil. In both short and long term transport study, clove oil did show the benefit by reducing the fish activities judging from the reduction of oxygen consumption, ammonia and carbon dioxide levels. Addition of appropriate concentration of clove oil in transport water ensured that the fish would stay calm by reducing fish activity and therefore, prevented any drastic changes of water qualities.

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