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All Journal Jurnal Akuakultur Rawa Indonesia e-Journal BUDIDAYA PERAIRAN Jurnal Ilmu Perairan (Aquatic Science) REKAYASA Jurnal Biologi Tropis Aquasains : Jurnal Ilmu Perikanan dan Sumberdaya Perairan Jurnal Pengabdian Magister Pendidikan IPA Unram Journal of Community Service (UJCS) Media Akuatika: Jurnal Ilmiah Jurusan Budidaya Perairan Jurnal Perikanan
Nunik Cokrowati
University of Mataram
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Immunology & microbiology Law, Crime, Criminology & Criminal Justice Physics Social Sciences Other

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Journal : REKAYASA

 1 
Uji Toksisitas Ekstrak Daun Sirih (Piper betle) Terhadap Benih Ikan Kakap Putih (Lates calcarifer) Leni Mardiana; Nunik Cokrowati; Alis Mukhlis
Rekayasa Vol 15, No 2: Agustus 2022
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v15i2.10137

Abstract

White snapper (Lates calcarifer) is a type of seawater fish that is in great demand by the public. This study aims to determine the 48-hour LC50 value and the effect of using betel leaf extract on the health status of white snapper. This research was conducted in July 2020 which took place at the Sekotong Coastal Aquaculture Development Center (BPBPP), West Lombok Regency, West Nusa Tenggara. This research was conducted using experimental methods. This study used 5 treatments and three replications, to obtain 15 experimental units with doses of 0 ppm, 80 ppm, 90 ppm, 100 ppm and 200 ppm. Data analysis was performed using a linear regression test, namely probit analysis by testing the mortality of tested animals and calculated through statistical data using Microsoft Excel. The higher the betel leaf extract concentration, the higher the number of white snapper seed deaths. This happens because the betel leaf extract contains active antimicrobial compounds, but at high concentrations, it can poison the white snapper seeds. For further research, it is recommended to test the toxicity of betel leaf extract on the mortality of white snapper with variations in water quality. 
Pertumbuhan Gracilaria sp. yang Dibudidayakan Pada Tambak di Bajo Baru Dompu Ulfa Yulistiana; Ayu Adhita Damayanti; Nunik Cokrowati
Rekayasa Vol 13, No 3: December 2020
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v13i3.9013

Abstract

Gracilaria sp. is a seaweed that produces "agar" and has economic value. Market demand for Gracilaria sp. is quite high but has not yet been fulfilled. Gracilaria sp. has not been widely cultivated in the waters of West Nusa Tenggara Province, including Dompu. If the level of production of Gracilaria sp. high, it can improve the community's economy. So it is necessary to increase cultivation to increase the production of Gracilaria sp. This research aims to study the growth of Gracilaria sp. cultivated with different initial seed weight treatment. The research was conducted in the Bajo Baru pond, Dompu, West Nusa Tenggara. This study used a completely randomized design method consisting of five treatments with three repetitions. The treatments were: treatment A; Gracilaria sp. with initial seed weight of 100 gr (control); treatment B: Gracilaria sp. with an initial seed weight of 375 g; treatment C: Gracilaria sp. with an initial seed weight of 425 g; treatment D: Gracilaria sp. with initial seed weight 475 g; treatment E: Gracilaria sp. with initial seed weight of 575 g. The parameters observed were absolute and daily growth, agar yield, and water quality. Cultivation and parameter observation was carried out for 30 days. Data analysis using ANOVA (Analysis of Variance) and graphs with descriptive analysis. The results showed that the initial seed weight of Gracillaria sp had no significant effect on absolute and daily growth. The best growth was obtained in treatment E (575 g) which gave 740 g absolute growth and 0.052 g daily growth. On the other hand, the yield value for agar shows a decreasing trend when using seeds with a higher initial weight. The yield value for the highest order was 17.56%.
Co-Authors Alis Mukhlis Aluh Nikmatullah Andre Rachmat Scabra Ayu Adhita Damayanti Ayu Adhita Damayanti Bagus Dwi Hari Setyono Baiq Raihanun Baiq Regia Gemara Putri Bq Tri Khairina Ilhami Bq. Tri Khairina ilhami Damai Diniariwisan Dewi Nur'aeni Setyowati Diamahesa, Wastu Ayu Dimas Putra Perdana Dinda Crista sya Waang Dinda Cristasya Waang Edy Sulman Eka Sunarwidhi Eka Sunarwidhi Prasedya Erwansyah Erwansyah Erwansyah Erwansyah Fajratul Fitri Fariq Azhar Hardawiansyah Hardawiansyah Hasriaton Padmi Heri Hariadi Ifla Afifilah Jayusri Jayusri Jayusri Junaidi, Muhammad Leni Mardiana Lulu Lutfiati Lumbessy, Salnida Yuniarti Mega Selfiaty Muhamad Jumat Muhammad Heri Hariadi Muhammad Jumat Muhammad Junaidi Muhammad Sumsanto Nanda Diniarti Nanda Diniarti Nanda Kurniawan Ni Kadek Puji Astuti Nurmaya Safitri Septiana Dwiyanti Sunaryo Sunaryo Sunaryo Sunaryo Ulfa Yulistiana Wanda Qoriasmadillah Yuliana Asri Zainal Abidin Zunnuraini Zunnuraini