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PENAMBAHAN METIL TESTOSTERON DALAM PAKAN UNTUK MEMACU PERTUMBUHAN NILA MERAH (Oreochromis sp.) Susilo Budi Priyono
Jurnal Perikanan Universitas Gadjah Mada Vol 5, No 2 (2003)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.9034

Abstract

The experiment was carried out to know the effect of supplemental dietary 17 methytetosterone (MT) on growth enhancement of red tilapia (Oreochromissp.). Fry smaller than 14 mm was given MT at 0 (control) and 60 mg/kg of feed for 28 days for masculinization. After masculinization, the fish were fef with MT at 0 (control), 1, 5, and 10 mg/kg of feed for 60 days to enhance the growth. The results showed that masculinization using MT at high dosage (60 mg/kg) was able to produce 96% of males fry at low dosage (1 – 10 mg/kg) also enhanced the growth of fishes. The highest growth rate 30% was observed at 10 mg MT/kg of feed. The growth enhancement was more effective in masculinized fry.
APLIKASI PENGINDERAAN JAUH DAN SISTEM INFORMASI GEOGRAFIS (SIG) UNTUK PERENCANAAN PENGEMBANGAN TAMBAK BIOCRETE Susilo Budi Priyono; Sri Rahayu
Jurnal Perikanan Universitas Gadjah Mada Vol 5, No 2 (2003)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.9036

Abstract

Application of remote sensing and geographic information system (GIS) for planning of biocrete shrimp ponds development was studied in the coastal area between Opak River and Progo River, Bantul Regency. Analysis of land suitability for biocreteshrimp pond used a multi-scoring of some physical variables, i.e. slope, soil texture, distance from coast line, distance from river, annual rainfall, flooded frequency, and landuse. Spatial analysis used a GIS software (ER Mapper 5.5, ARC/Info 3.5 and ARC/View GIS 3.2). The results showed that suitable land fotbiocreteshrimp pond was 73,6 ha. It found on beach ridge area that was distributed at Srandakan, Sanden, and Kretek Region. However, considered on the Detail Planning of Spatial Arrangement at Southern Coastal of Bantul Regency (RDTK PantaiSelaatnKabupatenBantul) and suistanable aquaculture planning, the development of biocrete shrimp ponds should be limited to 36,8 ha (50%), i.e. 18,4 ha ponds at Srandakan and 18,4 ha ponds at Sanden. Biocrete shrimp ponds had to be built at distance about 300 m from cost line.
Implementation of Ecosystem Approach to Aquaculture (EAA) on Tilapia Commodities in Klaten District Nugroho, Adi; Priyono, Susilo Budi; Suadi, Suadi
Jurnal Perikanan Universitas Gadjah Mada Vol 26, No 2 (2024)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.97839

Abstract

Ministry of maritime affairs and fisheries (MMAF) has issued guidance on ecosystem approach aquaculture (EAA) as a tool for profitable and sustainable management of aquaculture areas. The Minapolitan area of Klaten district with the superior commodity Tilapia fish has not yet fully implemented EAA. The purpose of this study are: (1) evaluating the management of tilapia fish commodity cultivation areas in Klaten district based on EAA indicators and (2) providing recommendations for interventions to improve the management of tilapia cultivation fishery areas in Klaten district based on EAA indicators. The methods of data analysis used in this study is quantitative analysis using descriptive approach. Data collection uses triangulation techniques where respondents are determined intentionally (purposefully). The study site was in Minapolitan Area 1 (Karanganom, Tulung and Polanharjo) and Minapolitan Area 2 (Ngawen, Kebonarum, and South Klaten) of Klaten regency. The result showed that the management of aquaculture areas with Tilapia as a commodity in Klaten district based on the EAA parameter is in adequate condition with a value of 2.26 for Minapolitan Area 1 and 2.13 for Minapolitan Area 2. Recommendations for interventions are improvements to institutional parameters, monitoring, and evaluation, as well as the role of environmental management in the area.
Perubahan Spasial Wilayah Pesisir Kabupaten Kendal Periode 1990-2020: Spatial Changes In The Coastal Area Of Kendal Regency Period 1990-2020 Adyatama, Kreshna; Setiawan, Riza Yuliratno; Priyono, Susilo Budi; Probosunu, Namastra
Jurnal Hidrografi Indonesia Vol 4 No 1 (2022): Jurnal Hidrografi Indonesia
Publisher : Pusat Hidro-Oseanografi TNI Angkatan Laut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62703/jhi.v4i1.28

Abstract

Kabupaten Kendal merupakan salah satu wilayah di pesisir utara Pulau Jawa yang mempunyai peran perekonomian cukup besar. Morfologi pesisir Kabupaten Kendal bersifat dinamis dan berimplikasi pada kesejahteraan sosial ekonomi kota-kota pesisir. Tujuan penelitian ini adalah untuk mengetahui sejauh mana perubahan spasial wilayah pesisir pantai Kabupaten Kendal dalam tiga dekade terakhir (1990-2020). Gambar Landsat 5 TM, Landsat 7 ETM+, dan Landsat 8 OLI dengan interval 5 tahun antara tahun 1990 dan 2020 digunakan dalam penelitian ini. Interpretasi visual melalui digitalisasi pada layar adalah metode yang diadopsi dalam penelitian ini. Antara tahun 1990 hingga 2020, panjang garis pantai Kabupaten Kendal bertambah dari 41,82 km pada tahun 1990 menjadi 59,13 km pada tahun 2020. Kabupaten Kendal, Kecamatan Brangsong, dan sebagian Kabupaten Kaliwungu semuanya mengalami perubahan wilayah pesisir yang signifikan. Dengan luas abrasi 470.484 ha dan luas akresi 385.161 ha, abrasi dan akresi mendominasi wilayah pesisir Kabupaten Kendal bagian timur. Morfologi garis pantai, arus sejajar pantai, gelombang laut, dan sedimentasi diduga menjadi variabel yang mempengaruhi dinamika wilayah pesisir Kabupaten Kendal.