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All Journal Journal of Innovation and Applied Technology Jurnal Sumberdaya Akuatik Indopasifik Jurnal Penelitian Pendidikan IPA (JPPIPA) Jurnal Akuakultura Universitas Teuku Umar
Mahariawan, I Made Dedi
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Earth & Planetary Sciences Education Environmental Science Materials Science & Nanotechnology Physics

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Performance of Amino Acid Supplementation in Feed on the Production of Cantang Grouper (Epinephelus lanceolatus x Epinephelus fuscoguttatus) in the Nursery Phase Rahardjo, Seto Sugianto Prabowo; Kurniawan, Hendra Agung; Oktaviani, Elsa Dian; Wibawa, Gigih Setia; Widyawati, Yuni; Mahariawan, I Made Dedi
JURNAL AKUAKULTURA Vol 8, No 2 (2024): Jurnal Akuakultura Universitas Teuku Umar
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/ja.v8i2.10200

Abstract

The growth of Cantang grouper is influenced not only by genetic factors but also by the quality of feed, particularly the protein content, which is closely related to amino acid levels. This study aims to investigate the effect of adding commercial amino acids to feed on the growth of Cantang grouper. The research was conducted using an experimental method with a Randomized Block Design (RBD), comprising four treatments and three replicates of amino acid doses added to commercial feed: P0 (0%), P1 (1%), P2 (2%), and P3 (3%). The parameters observed included survival rate, weight growth rate, length growth rate, specific growth rate, and feed conversion ratio. The results showed that adding amino acids to commercial feed over a 21-day rearing period significantly affected all parameters (p<0.05). The highest survival rate, weight growth, length increase, and specific growth rate were found in the P2 treatment with the values of 95.00 ± 5.00%, 7.40 ± 0.24 g, 3.69 ± 0.75 cm, 9.83 ± 0.15%/day, respectively. In addition, the lowest feed conversion ratio was obtained in the P2 treatment (1.22 ± 0.03).
Implementation of Laserpuncture, Microdiet, and Synbiotic in Fish Farming Community in Boyolali Regency Hariati, Anik Martinah; Mahariawan, I Made Dedi; Rahardjo, Seto Sugianto Prabowo; Hariyadi, Hariyadi; Suciati, Lusia Dyah; Nugroho, Nurul; Putri, Ajeng Ayu Restuaning; Permatasari, Felyta Dian; Salsabila, Sivana Yesica Ayu; Satria, Ibnu Darma; Denanta, I Made Kresna; Dailami, Muhammad
Journal of Innovation and Applied Technology Vol 11, No 1 (2025)
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The community service program in Boyolali Regency aims to increase the productivity of the fisheries sector through assistance with laserpuncture technology, the application of microdiet and natural feed, and the production of synbiotics. The methods used include counseling and direct practice involving more than 40 local fish farmers. The results of the program show that the application of laserpuncture and nutritional engineering through microdiet and synbiotics tecknology are increase fish growth. Participation and positive responses from the community show high enthusiasm for new technology which has a direct impact on productivity and the local economy. It is hoped that this program can be implemented independently in sustainable fisheries businesses.
Dinamika Populasi Bakteri Pada Budidaya Ikan Koi (Cyprinus rubrofuscus) Sistem Resirkulasi Mahariawan, I Made Dedi; Andayani, Sri; Suprastyani, Heny; Sa’adati, Feni Tri
Jurnal Sumberdaya Akuatik Indopasifik Vol 8 No 1 (2024): Februari
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Papua

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46252/jsai-fpik-unipa.2024.Vol.8.No.1.406

Abstract

Koi fish (Cyprinus rubrofuscus) is one of the aquaculture commodities that is highly marketable because of its unique color pattern and body shape. The prevalence of parasites and pathogenic agents in Koi fish among farmers poses challenges and leads to the occurrence of numerous illnesses. Water quality management is implemented in an effort to prevent several infectious microorganisms. The application of a recirculation system is used to enhance water quality and bolster the disease resistance of Koi fish. The objective of this study was to evaluate the application of RAS technology in the koi fish culture under different filter media on bacterial density. This study used four treatments, namely treatment A (RAS with a dacron filter and pumice), B (RAS with a dacron filter and sand), C (RAS with a sand and pumice filter), and K (control without a recirculation system). The parameter observed in this study was the density of bacteria in the koi fish rearing-media. These findings demonstrated that the utilization of various filters had an impact on bacterial density. Treatment C (RAS with sand and pumice filter) exhibited the greatest bacterial density with an average value exceeding 3.4 log CFU. mL-1 from the first week to the third week. The density of nitrifying bacteria in the koi fish production system is positively influenced by the high-quality maintenance practices that are maintained under optimal conditions.
The Effect of Different Guanidino Acetic Acid (GAA) Levels and Protein Source on Blood Profile of Tilapia Fish (Oreochromis niloticus) Afifah, Fakhirah Oktafiani; Mahariawan, I Made Dedi; Kusuma, Wahyu Endra; Hidayat, Bagus R.; Yuniarti2, Ating; Hariati, Anik Martinah
Jurnal Penelitian Pendidikan IPA Vol 11 No 2 (2025): February
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v11i2.7608

Abstract

Tilapia (Oreochromis niloticus) is a freshwater fish that has high economic value and potential to be cultivated. The problem that often arises in tilapia cultivation is the lack of optimal use of the feed given. The purpose of this research was to find out blood profile of tilapia during culture period. The method used was a completely randomized design (CRD) with five treatments and every treatment with four replications. This study used 240 Tilapia with average weight of 15 g. The stocking density of the aquaria is 15 fish. Test feed in this study is the form of dry pellets consisting combination of GAA levels, protein content (25% dry matter bases), and source of protein (fish meal and non-fishmeal). During the cultured period of 70 days, fish fed by formula diet of 3% biomass per day. Sampling for blood profile tested of erythrocytes, leukocytes, and hematocrit is carried out after the research. The water quality of temperature, pH, and DO were daily monitoring. The combination treatment of guanidino acetic acid (GAA) levels with different protein sources (fishmeal and non-fishmeal) had a significant effect on total erythrocyte of tilapia, but did not have significant differences between treatments on total leukosyte and hematocrit. Treatment with 1.2 g/kg GAA, fish meal protein source was the best treatment in this research.
Optimization of Temperature and Drying Time of Encapsulated Synbiotic Powder on the Characteristics and Viability of Microcapsules Pangestu, Lintang Dion; Mahariawan, I Made Dedi; Yuniarti, Ating; Hariati, Anik Martinah
Jurnal Penelitian Pendidikan IPA Vol 11 No 1 (2025): January
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v11i1.9979

Abstract

The drying process is often a problem in maintaining the stability of probiotics and the quality of microcapsules in the processing of synbiotic microencapsulation. This study aims to optimize the temperature and drying time to maintain the core material's stability and the microcapsules' quality. The research design in this study was a completely randomized design with two factorials, namely drying temperature (30°C, 35°C, and 40°C) and drying time (2, 2.5, and 3 hours). The results showed that the highest viability and efficiency values ​​were obtained in the drying process at 40°C for 2 hours, which were 9.29 log CFU/mL and 98.10%. In addition, the water content and gel strength of the microcapsules obtained also showed optimal conditions. Based on the results obtained, it can be concluded that the drying process at 40°C for 2 hours is the best treatment, with the highest viability and EE values ​​and low water content values.
Co-Authors Afifah, Fakhirah Oktafiani Ating Yuniarti Denanta, I Made Kresna Gigih Setia Wibawa Hariati, Anik Martinah Hariyadi, Hariyadi Heny Suprastyani, Heny Hidayat, Bagus R. Kurniawan, Hendra Agung Kusuma, Wahyu Endra Muhammad Dailami, Muhammad Nugroho, Nurul Oktaviani, Elsa Dian Pangestu, Lintang Dion Permatasari, Felyta Dian Putri, Ajeng Ayu Restuaning Rahardjo, Seto Sugianto Prabowo Salsabila, Sivana Yesica Ayu Satria, Ibnu Darma Sa’adati, Feni Tri Sri Andayani Suciati, Lusia Dyah Widyawati, Yuni Yuniarti2, Ating