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All Journal ECSOFiM (Economic and Social of Fisheries and Marine Journal) Jurnal Penelitian Pendidikan IPA (JPPIPA) Journal of Aquaculture and Fish Health
Mohamad Fadjar
Brawijaya University
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Economics, Econometrics & Finance Education Environmental Science Materials Science & Nanotechnology Physics Social Sciences

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Financial Feasibility Analysis of Shrimp Vannamei (Litopenaeus vannamei) Culture in Intensive Aquaculture System with Low Salinity Heri Ariadi; Mohamad Fadjar; Mohammad Mahmudi
ECSOFiM (Economic and Social of Fisheries and Marine Journal) Vol 7, No 01 (2019): ECSOFiM October 2019
Publisher : Faculty of Fisheries and Marine Science, Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.ecsofim.2019.007.01.08

Abstract

The prevalence of disease spread caused by improper cultivation systems causes a decrease in the productivity level of vannamei shrimp ponds. A low salinity cultivation system is one of the cultivation innovations that can be developed to reduce the spread of disease. The purpose of this study was to describe water quality status on aquatic shrimp culture and business financial feasibility in the intensive vannamei shrimp (Litopenaeus vannamei) culture with low salinity levels. The research method used was quantitative descriptive with a purposive sampling technique of data collection. The result of the research is the Water Quality Index analysis value of 110 which means it is very suitable to be used as a cultivation medium. Profitability analysis produces a profit value of Rp. 244,456,603, R/C Ratio 1.35, BEP Unit 3,797, BEP Sales Rp. 188,745,587, and Profitability 35%. Meanwhile, the financial analysis of the business found that the NPV value was Rp. 19,627,985,863, the Profitability Index was 25.43%, the IRR was 27.55%, and the Payback Period was 5 years, which meant that this business was very feasible to be developed based on its financial feasibility status criteria. So that the overall, low salinity shrimp culture is very feasible to be applied when viewed from the ecological or economic advantage, and can be used as an alternative for vannamei shrimp aquaculture in areas that have the location of a pond far from the source of marine water.
Potential of Moringa (Moringa oleifera) leaf extract to inhibit the growth of pathogenic bacteria Edwardsiella tarda Farid Mukhtar Riyadi; Arief Prajitno; Mohamad Fadjar; Arif Syaifurrisal; Annisa Isti Fauziyyah
Journal of Aquaculture and Fish Health Vol. 10 No. 3 (2021): JAFH Vol. 10 No. 3 September 2021
Publisher : Department of Aquaculture

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jafh.v10i3.25057

Abstract

This study analyzed the antibacterial activity of Moringa oliefera leaf extract against the growth of Edwardsiella tarda bacteria. This study aims to determine the antibacterial activity of Moringa leaf extract (M. oliefera) against the growth of E.tarda bacteria. Inhibition testing is done by diffusion method (disc test). The disc test used five variations of concentration of 75 mg/L, 150 mg/L, 225 mg/L, 300 mg/L, and 375 mg/L on TSA (Tryptone Soya Agar) media and incubated for 2x24 hours. As a positive control, an antibiotic in the form of chloramphenicol was used. (5 mg/L) Moreover, distilled water was used as a negative control.Moringa leaf extract (M. oliefera) contains natural active compounds, bacteriostatic antibacterials, due to decreased bacterial growth after 48 hours of incubation. The highest inhibition diameter of E. tarda was 12.95 mm at a concentration of 375 mg/L after 24 hours incubation and decreased by 11.02 mm after 48 hours incubation. The highest inhibitory effectiveness was at a concentration of 375 mg/L with an effectiveness of 58.8%, while the effectiveness of the decrease was 48.1% after 48 hours of incubation.
Growth and Body Composition of Spiny Lobster (Panulirus homarus) Reared with Short-Term Fasting Pranawengrum Sekartadji; Arning Wilujeng Ekawati; Mohamad Fadjar
Jurnal Penelitian Pendidikan IPA Vol 9 No 6 (2023): June
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9i6.3620

Abstract

Slow growth rate tends to be a challenge in the cultivation of spiny lobster (P. homarus) because it impact on long rearing periods and high operational costs, especially for feeds. Short-term starvation or fasting has known to allow the minimum feed usage without inhibiting biota growth, also improves digestive function, reduces the amount of water-soluble nutrient metabolites, and reduces operational costs. Spiny lobster (P. homarus) measuring 50.0 ± 10.0 g was reared for 6 weeks in floating net cages. Lobsters were fasted at intervals of 1 fasting day/1 day of feeding, 1 fasting day/2 days of feeding, and fed daily. Survival, growth, and feed efficiency of spiny lobster (P. homarus) were analyzed. Higher growth rate and energy retention were found in spiny lobster (P. homarus) reared with short-term fasting system.  Lower FCR also found in the same rearing system. Spiny lobster (P. homarus) body content indicate its ability to store nutrient in mucle and hepatopancreas in order to adapt to starved condition. Short-term fasting can improve growth and feed efficiency in spiny lobster (P. homarus) cultivation
Co-Authors Annisa Isti Fauziyyah Arief Prajitno Arif Syaifurrisal Arning Wilujeng Ekawati Farid Mukhtar Riyadi Heri Ariadi Mohammad Mahmudi Pranawengrum Sekartadji