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All Journal Jurnal Akuakultur Rawa Indonesia Indonesian Aquaculture Journal Energy Justice
Bosman, Ofan
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Energy Environmental Science Immunology & microbiology

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TOKSISITAS LIMBAH CAIR LATEKS TERHADAP KELANGSUNGAN HIDUP, PERTUMBUHAN DAN TINGKAT KONSUMSI OKSIGEN IKAN PATIN (Pangasius sp) Ofan Bosman; Ferdinand Hukama Taqwa; Marsi .
Jurnal Akuakultur Rawa Indonesia Vol 1, No 2 (2013): JURNAL AKUAKULTUR RAWA INDONESIA
Publisher : Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (205.468 KB) | DOI: 10.36706/jari.v1i2.1734

Abstract

The purposes of this research are to determine the value of LC50 96 hours and sub lethal toxicity test of latex liquid waste against survival, growth and oxygen consumption rate of catfish. This research was held from April until June 2013 in Laboratory of Basic Fisheries, Faculty of Agriculture, Sriwijaya University. The materials used for this research were latex liquid waste and catfish was a length of 11 cm ± 0.1 cm with a weight of 10 g ± 1 g as bioassay. This research used a completely randomized design (CRD) with seven treatments and  three replications. Treatment levels of lethal toxicity test were 0 mL.L-1 (A), 16.8 mL.L-1 (B), 18.8 mL.L-1 (C), 21.0 mL.L-1 (D), 23.5 mL.L-1 (E), 26.3 mL.L-1 (F) and 29.4 mL.L-1 (G). Treatment levels of sub lethal toxicity tests were 0% x LC50 96 hours (A), 0.5% x LC50 96 hours (B), 1% x LC50 96 hours (C), 6.25% x LC50 96 hours (D), 12.5% ​​x LC50 96 hours (E), 25% x LC50 96 hours (F) and 50% x LC50 96 hours (G). The result of this research showed that the of LC50 96 hours concentration of latex liquid waste for catfish is 24.5 mL.L-1. The results of sub lethal toxicity test indicated that latex liquid waste significantly affect the survival of catfish in the concentration of 25% x LC50 96  hours (F), while did not significantly affect on growth until concentration of 50% x LC50 96 hours  (G). Exposure time periode affects oxygen consumption rate was concentration from 0,5% x LC50 96 hours (B) until 50% x LC50 96 hours  (G) where the longer of exposure time would decrease the oxygen consumption of catfish.   Keywords: Latex Liquid Waste, Toxicity, Catfish
A STUDY ON THE GROWTH AND PHYSIOLOGICAL RESPONSE OF JUVENILE TINFOIL BARB Barbonymus schwanenfeldii (Bleeker, 1854) UNDER THE INFLUENCE OF pH CHANGES Oktavia, Nia; Prakoso, Vitas Atmadi; Kamal, Mohammad Mukhlis; Arifin, Otong Zenal; Subagja, Jojo; Kurniawan, Kurniawan; Iswantari, Aliati; Kusmini, Irin Iriana; Irawan, Deni; Cahyanti, Wahyulia; Radona, Deni; Putri, Fera Permata; Bosman, Ofan; Wibowo, Arif; Kristanto, Anang Hari; Gustiano, Rudhy
Indonesian Aquaculture Journal Vol 19, No 1 (2024): (June, 2024)
Publisher : Agency for Marine and Fisheries Extension and Human Resources

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/iaj.19.1.2024.35-44

Abstract

Tinfoil barb Barbonymus schwanenfeldii is recognized as one of the potential aquaculture commodities in Indonesia. Nonetheless, lack of data on their environmental tolerance causing this issue to become essential to be investigated. The present study was carried out to assess the pH influence on growth and physiological response of juvenile tinfoil barb. Juvenile tinfoil barbs (TL: 5.5 ± 0.8 cm; BW: 2.4 ± 1.0 g) were treated with four pH level treatments (5, 6, 7, and 8) and three replications with the stocking density of 10 fish each aquarium. Fish were kept for 21 days and fed with commercial fish feed. In this study, pH 8 exposure resulted to lower growth of juvenile tinfoil barb compared to pH treatment 5 to 7 (p<0.05). In terms of survival rate, the results show significantly lower value at pH 8 treatment compared to those of pH 6 and 7 treatment (p<0.05), while it is not significantly different with pH 5 treatment (p>0.05). Additionally, this study found the highest value of glucose, cortisol, and aspartate aminotransferase (AST) on pH 8 treatment (p<0.05). On the other hand, pH 8 exposure led to the lowest creatinine, blood urea nitrogen (BUN), and ALP level (p<0.05). In conclusion, the optimal pH for juvenile tinfoil barb rearing ranged around 6-7.
EFFECTS OF DIFFERENT SALINITY LEVELS ON GROWTH AND PHYSIOLOGICAL RESPONSE OF Tor soro JUVENILE Leying, Ananda Ghifari; Prakoso, Vitas Atmadi; Arifin, Otong Zenal; Subagja, Jojo; Kurniawan, Kurniawan; Irawan, Deni; Cahyanti, Wahyulia; Putri, Fera Permata; Bosman, Ofan; Wibowo, Arif; Kristanto, Anang Hari; Pramono, Taufik Budhi
Indonesian Aquaculture Journal Vol 18, No 1 (2023): (June, 2023)
Publisher : Center for Fisheries Research, Agency for Marine and Fisheries Research and Human Resource

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/iaj.18.1.2023.71-77

Abstract

Tor soro is one of the most economically important native freshwater fish species in Indonesia. Nonetheless, the insufficient data regarding its salinity tolerance makes a thorough investigation of this issue imperative. This research was conducted to determine the effects of salinity on the growth and physiological response of Tor soro juveniles at optimum salinity levels. This study used Tor soro (total length: 5.0±0.08 cm; initial weight: 2.0 ± 0.06 g) with five salinity level treatments of, 0, 2, 4, 6, and 8 ppt, and the stocking density of 15 fish per aquarium (three replications). Fish were maintained for 30 days and fed with commercial aquafeed. In this study, the best growth was found in 2 ppt (length gain: 0.37 ± 0.05 cm; weight gain: 0.23 ± 0.01 g; specific growth rate in length: 1.38 ± 0.16 % day-1; specific growth rate in weight: 0.78 ± 0.05% day-1) which is significantly higher than 4, 6, and 8 ppt (p<0.05), but it is not significantly different from 0 ppt (p>0.05). The results of the physiological response showed that there were no significant stress responses in Tor soro juvenile for all salinity treatments (p>0.05). there was no effect of 2 ppt salinity on the growth parameters compared to controls, but salinities above ppt had a significant detrimental effect. Exposure to salinities did not have any stress effect as shown by physiological indicators.
Arah pembangunan energi terbarukan di Indonesia pada era presiden Joko Widodo Bosman, Ofan; Putra, Reza Dwi
Energy Justice Vol. 1 No. 1: (Februari) 2024
Publisher : Institute for Advanced Social, Science, and Sustainable Future

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61511/enjust.v1i1.2024.701

Abstract

Background: Indonesia has a large amount of renewable energy, but not very wide. This research aims to study the development of renewable energy under the leadership of Joko Widodo. Methods: They are qualitative methods using qualitative methods, conducted through literature analysis and literature research. Findings: President Joko Widodo announced a series of rules on renewable energy, namely the Minister of Energy and Natural Resources (ESDM). Revising the Ministry of Energy and Natural Resources (Kemen ESDM) regulations. The Ministry of Energy made provisions for renewable energy use in May 2018. This is the presidential decision 3912/2018 as amended by the Ministry of Energy and Resources regulations. A study on the implementation of physical activities in the fields of renewable energy use and energy conservation, September 17, 2017. Conclusion: On the 22nd, it was the National Energy Master Plan (RUEN). Some of these rules are based on national energy policy (KEN) and statutory numbers. It was published on June 30, 2006. Renewable energy development (RET) is one of the President's priorities to ensure the safety and sustainability of the country's energy. In this early stage, the Joko Widodo government has made considerable efforts to develop BSE while studying policies and implementation.
Co-Authors Aliati Iswantari Arif Wibowo Cahyanti, Wahyulia Deni Irawan, Deni Deni Radona, Deni Fera Permata Putri, Fera Permata Ferdinand Hukama Taqwa Irin Iriana Kusmini, Irin Iriana Jojo Subagja Kristanto, Anang Hari Kurniawan Kurniawan Leying, Ananda Ghifari Marsi Marsi Mohammad Mukhlis Kamal Oktavia, Nia Otong Zenal Arifin Prakoso, Vitas Atmadi Putra, Reza Dwi Rudhy Gustiano Taufik Budhi Pramono