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Journal of Aquaculture and Fish Health
Published by Universitas Airlangga
ISSN : 23017309     EISSN : 25280864     DOI : -
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
The Journal of Aquaculture And Fish Health (JAFH) has an objective to publish and provide high-quality scientific contributions to the field of fisheries. These contributions came from innovative researches that encourage science and technology development in the field of fisheries and marine science on a national and international scale. This journal serves as a communication medium for researchers, academics, students, and communities.
Arjuna Subject : -
Articles 331 Documents
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Protease Production from Bacillus sp. Isolated from Gastrointestinal Tract of Catfish (Clarias sp.) with Different Medium Asep Awaludin Prihanto; Kartika D. Aninta; Soffi Trisnaningrum
Journal of Aquaculture and Fish Health Vol. 10 No. 2 (2021): JAFH Vol. 10 No. 2 June 2021
Publisher : Department of Aquaculture

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jafh.v10i2.17606

Abstract

The need for protease in the industrial field has been increasing. Candidates for producing these enzymes can be isolated from the digestive tract of catfish (Clarias sp.). The purpose of this study was to obtain bacterial isolates that produce proteolytic from the gastrointestinal tract of catfish and determine the effect of different production media on the activity of proteolytic. The first step of this study was isolation, screening, and identification of bacteria. The second step was to test the effect of the media Luria Bertani, trypticase soy broth, and skim milk broth on proteolytic activity. Nineteen isolates were obtained from the screening process of proteolytic bacteria. Isolate no 1, was known as the best isolate in producing enzymes and was known as Bacillus sp. Tests with different growth media gave results that semi-quantitative, nutrient growth media produced the highest activity with a proteolytic index value of 2.09 ± 0.41. In addition, based on quantitative tests, the media Luria Bertani Broth produced the highest specific activity with a value of 36.479 U/mg. The conclusion of this study, Bacillus sp. from the gastrointestinal tract of catfish that cultured on the Luria Bertani Broth medium produced the best activity.
Salt Marketing Strategy in Lombok Timur Regency, Nusa Tenggara Barat Mohammad Subhan; Prawita Anggeni; Sirrul Hayati
Journal of Aquaculture and Fish Health Vol. 10 No. 1 (2021): JAFH Vol 10 No. 1 February 2021
Publisher : Department of Aquaculture

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jafh.v10i1.22222

Abstract

Marketing is the main problem felt by salt farmers in East Lombok Regency, especially during the harvest season, which has an impact on the conversion of the salt pond land to cultivation land. This research aims to: 1) identify salt marketing channels in East Lombok Regency, 2) develop salt marketing strategy in East Lombok Regency. This research uses qualitative methods and the data will be analyzed by SWOT analysis.Efficient salt marketing occurs when the marketing channels include producers (salt farmers)-cooperatives /micro, small and medium enterprises-consumers, because it can shorten marketing channels and-reduce operational costs. Marketing of salt in East Lombok Regency can be carried out with several strategies, namely: 1) Maximizing the role of cooperatives and micro, small and medium enterprises in salt marketing, 2) Improving the quality of human resources in managing the salt business, 3) Formulating regulations on salt trading, and 4) Providing production technology training to salt farmers and salt micro, small and medium enterprises.
Tilapia Culture in South Latitudes: First Report of Successful Fattening in Hot Springs of Buenos Aires Province, Argentina Damian Luis Castellini; Aldo Nahuel Zanazzi; Angelina Gorosito; Enzo Damián Tranier; María Fernández-Subiela; Juan Carlos Mallo
Journal of Aquaculture and Fish Health Vol. 9 No. 3 (2020): JAFH Vol. 9 No. 3 September 2020
Publisher : Department of Aquaculture

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jafh.v9i3.19979

Abstract

In the present work, the feasibility of fattening Oreochromis niloticus specimens on a pilot scale in a geothermal water resource located in the Southeast of the province of Buenos Aires was analyzed. Before placing the culture units, physical and chemical characteristics of hot spring were studied to evaluate its suitability for tilapia farming. In the experimental stage, two hundred specimens with an average weight of 14.5 ± 1.8g were placed in two floating cages (1.30x1x1m) (100 individuals per cage) and they were harvested at 140 days. The specimens were fed 3 times a day with a commercial pelleted feed with a content of 35% of proteins. Monthly samplings were carried out to evaluate growth (weight and total length), survival, and water samples were collected to measure their physical-chemical characteristics. The results of the water analysis showed a high quality in the hot springs (Simplified Water Quality Index=88). The fattening results showed an average final weight of 423-435.9 g, a survival of 87-91%, a SGR 1.47- 1.49% / day and  the FCR was estimated at 1.05-1.07 for each cage respectively. We can conclude that this hot spring has the necessary water conditions to obtain excellent weight gains during the fattening period for the O. niloticus specimens. The present study represents the first Nile tilapia culture in the southernmost thermal waters, setting a precedent for future ventures in the area.
Production Performance of Catfish (Clarias gariepinus Burchell, 1822) Cultured With Added Probiotic Bacillus sp. on Biofloc Technology Rifqah Pratiwi; Kurniawan Wahyu Hidayat; Sumitro Sumitro
Journal of Aquaculture and Fish Health Vol. 9 No. 3 (2020): JAFH Vol. 9 No. 3 September 2020
Publisher : Department of Aquaculture

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jafh.v9i3.16280

Abstract

Biofloc technology (BFT) is one of the most developed aquaculture technologies, which aims to improve the efficiency of feed use by providing nutrients for flocs to be used by fish as a supplementary feed. Also, BFT serves to improve water quality through the breaking down of fish waste materials assisted by heterotrophic bacteria. Bacteria used in this study were Bacillus sp. as probiotics in BFT. This study aimed to examine the production performance of catfish maintained with a biofloc system on an industrial scale, without experimental design. The average weight of catfish when stocking was 5.9 ± 0.0 g/fish with a density of 7000 fish in 9 unit circular ponds. This studies showed after 78 days of culture, bodyweight gain about 28.6 g/fish to 41.7 g/fish, highest specific growth rate was K2 (2.4 ± 0.2% BW/day), the highest survival rate K2 (98.87 ± 6.64% BW/day), highest grow rate K1 (41.7 ± 5.8 g) and the best FCR K9 (0.95 ± 0.11).
In Vitro Analysis of Antibacterial Activities of Curry Leaf (Murraya koenigii) Extract Towards Bacteria Edwardsiella tarda Arif Syaifurrisal; Arief Prajitno; Mohamad Fadjar; Farid Mukhtar Riyadi; Annisa Isti Fauziyyah
Journal of Aquaculture and Fish Health Vol. 10 No. 2 (2021): JAFH Vol. 10 No. 2 June 2021
Publisher : Department of Aquaculture

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jafh.v10i2.25042

Abstract

This study analyzed the antibacterial activity of curry leaf extract (Murraya koenigii) on the growth of Edwardsiella tarda bacteria. This study aims to determine the bioactivity and antibacterial effectiveness of M. koenigii leaf extract against the growth of E.tarda bacteria. Inhibition test was carried out by delusion (MIC test) and diffusion (disc test) methods. MIC test used 5 variations of concentration: 1 mg/L, 10 mg/L, 100 mg/L, 500 mg/L and 1,000 mg/L on TSB (Tryptone Soya Broth) media; it was incubated for 24 hours. While the disc test used 5 variations of concentration: 100 mg/L, 200 mg/L, 300 mg/L, 400 mg/L and 500 mg/L on TSA (Tryptone Soya Agar) media and incubated for 2x24 hours. Chloramphenicol (5 mg/L)  was used as a positive control, and distilled water was used as a negative control.                    M. koenigii leaf extract contains natural bioactive; it was bacteriostatic antibacterial due to bacteria's growth after 48 hours incubation. The highest inhibition diameter of E.tarda was 7,20 mm at a concentration of 500 mg/L after 24 hours incubation. The highest inhibitory effectiveness was at a concentration of 500 mg/L with effectivity 56.3%, while it declined to 46,44% after 48 hours incubation.
Feeding Level and Frequency Effects in Captive Nile Tilapia (Oreochromis niloticus) Fry Ibrahim elkhalil Behmene; Benabdallah Bachir Bouiadjra; Sifi Mustapha; Mohamed Daoudi; Abdelkader Homrani
Journal of Aquaculture and Fish Health Vol. 10 No. 2 (2021): JAFH Vol. 10 No. 2 June 2021
Publisher : Department of Aquaculture

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jafh.v10i2.23629

Abstract

Hence, the interest in variations in feeding frequencies in captive Nile tilapia fry. Two hundred forty mixed-sex fries, intended to test the feeding frequency, with an initial average weight of 0.03 0.04g; corresponding to an average size of 1.4 cm, randomly distributed in (12) boxes each containing 4 fry/L. Fry are fed with Naturalleva import pellets for 30 days. A single photoperiod is studied for long days (18L: 6D) and to maintain an intensity of 2500 lux. The Statistics data are analyzed using software (R) and tested for normality and homogeneity of variance before being subjected to variance analysis (ANOVA; p≤0.05) and Duncan’s method. A multiple range test was used to compare the mean differences. A feed frequency of 4 times and six (06) times a day shows more efficient use of food than once, twice, and three times a day of food intake. The overall growth parameters for larval tilapia rearing are satisfactory, with the feeding regime set at 35% of the biomass of captive residents for two weeks of rearing, and 17.5% for the remaining two weeks. These results represent standards for the launch of captive breeding of the Nile tilapia strain, which will allow freeing themselves from the often expensive and foreign currency imports of fry for the country.
Growth Performance of Smooth Marron (Cherax cainii) Fed Different Dietary Protein Sources Ishaaq Saputra; Ravi Fotedar
Journal of Aquaculture and Fish Health Vol. 10 No. 1 (2021): JAFH Vol 10 No. 1 February 2021
Publisher : Department of Aquaculture

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jafh.v10i1.20794

Abstract

Fish farming including freshwater crayfish still has a dependency on the availability of fish meal as the main source of protein in feed. The purpose of this study was to evaluate alternative protein sources including poultry by-products, feather meal, lupine flour, soybean meal and meat, and bone meal for smooth marron (Cherax cainii) freshwater crayfish feed. A total of 150 juvenile marrons (9.09 ± 0.21 g) were kept for 90 days and distributed into 15 rearing tanks consisting of five treatments with three replications. The results indicated that there was no significant difference in the increase in biomass, survival rate, moulting rate (weight), feed efficiency ratio, and feed digestibility (P> 0.05). However, marron juvenile fed with a protein source of poultry by-products meal had the highest specific growth rate (0.31 ± 0.05 g / day). In addition, marron fed with fish meal protein resulted a significant increase in carapace length (P <0.05). Based on the digestibility test, it was found that the digestibility level of the feed ranged from 76.39 ± 0.01 - 79.11 ± 0.01% and replacement of fish meal had no significant effect on dry matter digestibility (P> 0.05). Overall, the results of this study indicate that the general growth performance of marron is not affected by the replacement of fish meal in the feed. Alternative protein materials can be used as a protein source to replace fish meal in marron feed so that the use of fish meal can be reduced.
The Digestion Level of Tilapia (Oreochromis niloticus) to Different Combination Feeds Vini Taru Febriani Prajayati; Otie Dylan Subhakti Hasan; Mugi Mulyono
Journal of Aquaculture and Fish Health Vol. 10 No. 1 (2021): JAFH Vol 10 No. 1 February 2021
Publisher : Department of Aquaculture

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jafh.v10i1.18234

Abstract

Digestibility is food substances from feed consumption that are not excreted into the feces, and the difference between food substances consumed and those excreted in the feces is the amount of food that can be digested. Information about the digestibility value of food is very important as a basis in assessing the quality of food and designing fish feed rations.This research was conducted to determine the level of the feed digestibility in nirvana tilapia (Oreochromis niloticus) feed with a combination of fish meal and maggot flour. This research was conducted at the Hatchery Campus of BAPPL STP Serang, Banten from September-December 2019. This study used a Completely Randomized Design (CRD) with 5 treatments and 3 replications. There were 225 fish used in the testing with an average weight of 0.16 grams. The culture media used was a plastic  container with a size of 60 x 41 x 34 cm. Feeding was carried out for 50 days, with a frequency of twice a day, and the dose of feeding was 3% of the biomass.The results showed the total digestibility parameter of feed, protein digestibility of feed and the highest protein retention in the treatment of 50% of the combination feeds , with the highest total digestibility value of 56.97 ± 3.41 and the lowest of 42.08 ± 0.42, the highest protein digestibility with a value of 87.33 ± 0.95and the lowest of 83.11 ± 1.30 and the highest protein retention with a value of 14.83 ± 0.22and the lowest of 11.69 ± 1.05. 
The Use of Rubber Seed Oil as an Alternative Plant Lipid Source for Stripped Catfish (Pangasianodon hypophthalmus) Diet Andi Apriany Fatmawaty; Achmad Noerkhaerin Putra; Aris Munandar; Nuniek Hermita; Mustahal Mustahal; Dodi Hermawan; Lukman Anugrah Agung; Arif Rahman; Mas Bayu Syamsunarno
Journal of Aquaculture and Fish Health Vol. 10 No. 2 (2021): JAFH Vol. 10 No. 2 June 2021
Publisher : Department of Aquaculture

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jafh.v10i2.19845

Abstract

Dietary lipid in the forms of fish oil and corn oil are known as the best lipid sources. An effort to find an alternative to lipid sources other than both forms of oil can be done through the use of ts rubber seed oil. The study was conducted to evaluate rubber seed oil as a lipid source in the diet for increasing the growth of striped catfish (Pangasianodon hypophthalmus) fingerlings. A tested diet having isoprotein (30.14±0.01%) and isoenergy (271.26±0.08 DE kcal/100g) was used in this study. Fish oil, corn oil, and rubber seed oil at a total of 3% were used as the diet's lipid sources. Rubber seed oil was added to the diet at 0, 1, and 3%, respectively. After acclimatized to the experimental condition, striped catfish fingerlings (9.72±0.01 g) were randomly stocked in 12 aquariums (69x29x35 cm3; Volume 50 L) with a density of 15 fingerlings/container and fed on the tested diet at satiation for 40 days. The use of rubber seed oil as a source of lipid in the diet does not affect the survival rate and body fat (P> 0.05). The composition of 2% rubber seed oil in the feed gives the best growth in striped catfish fingerlings, with feed intake of 233.00±1.00 g, a specific growth rate of 2.01±0.05% day-1, feed efficiency of 75.45 ± 1.18%, protein efficiency ratio of 2.45 ± 0.11% and body protein of 44.03 ± 2.42%. There is a tendency that higher rubber seed oil content in the diet, produce better the fatty acid profile in the body of the striped catfish.
Effectiveness of Bromelain and Papain Enzymes in Hatching Media with Different Salinity on the Hatching Success of Tilapia (Oreochromis niloticus) Eggs Fani Fariedah; Maheno Sri Widodo; Soko Nuswantoro
Journal of Aquaculture and Fish Health Vol. 10 No. 1 (2021): JAFH Vol 10 No. 1 February 2021
Publisher : Department of Aquaculture

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jafh.v10i1.22566

Abstract

Tilapia is euryhaline fish which is commonly cultivated in former shrimp ponds, and belongs to mouthbreeders. The purpose of this study was to determine the hatching success of Tilapia eggs outside the mother's mouth, which was carried out in the salinity medium added with bromelain and papain enzymes. The research method was factorial CRD with enzyme (factor A) and salinity (factor B), with three replications. The research was conducted at the Fish Cultivation laboratory of the Faculty of Fisheries and Marine Sciences, Brawijaya University in January-February 2020. The results showed that papain had more effect on hatchability (93.77%), while the salinity of 5 ppt was the salinity that produced the highest hatchability (93.89%). Moreover, the hatchability was also influenced by the interaction between the enzyme and salinity, namely papain enzyme with a salinity of 5 ppt (98.89%). Meanwhile, bromelain had more effect on the survival of larvae (87.86%), and the salinity that produced the highest survival rate was at 5 ppt (85.75%), but the interaction between enzyme and salinity did not have an effect on the survival of larvae.

Page 15 of 34 | Total Record : 331

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