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All Journal Sains Akuakultur Tropis : Indonesian Journal of Tropical Aquaculture
Sri Rejeki
Department Of Aquaculture, Diponegoro University, Jl. Prof. Sudarto, SH, Tembalang, Semarang, Indonesia 50275|Universitas Diponegoro
Agriculture, Biological Sciences & Forestry

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Pengaruh Metode Budidaya dan Asal Bibit terhadap Pertumbuhan Gracilaria verrucosa Yang Dibudidayakan Di Tambak Desa Kaliwungu, Kabupaten Brebes Dinda Puspitarini; Sri Rejeki; Ttitik Susilowati
Sains Akuakultur Tropis : Indonesian Journal of Tropical Aquaculture Vol 5, No 2 (2021): SAT edisi September
Publisher : Departemen Akuakultur FPIK UNDIP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/sat.v5i2.10913

Abstract

Gracilaria verrucosa is one of the seaweeds with good economic value that can be cultivated in ponds. The demand for Gracilaria is increasing as an ingredient for food, beverage, cosmetic, pharmaceutical manufacturing industries. The factors that determine the success of Gracilaria culture: cultivation methods include the seeds quality and source.This study aims to determine the effect of different Gracilaria seeds sources and its culture methods on its growth, to determine the interaction between methods and seed sources. This study aims to determine the effect of different Gracilaria seeds sources and its culture methods on its growth, to determine the interaction between methods and seed sources The research was conducted in October-November 2020 in Kaliwlingi Village, Brebes District, Brebes Regency, Central Java. The experimental used was factorial design with 2 factors: Factor 1: seed sources (A): A1 = Seed from Semarang; A2 = seed from Brebes; A3 seeds from Demak. Factor 2: cultivation method (B): B1 = longline; B2 = off-bottom; B3: broadcast. So there were 9 treatment combinations: A1B1, A2B1, A3B1; A2B1, A2B2, A2B3; A3B1, A3B2, A3B3, each treatment with 3 replications. The data collected include: growth of gracilaria during 60 days. The Specific Growth Rate (SGR) analyzes using ANOVA. The results showed the origin of seedlings and cultivation methods have a very real effect (P<0.05) on SGR Gracilaria. The highest SGR was at treatment A1B1 (Semarang seeds longline method) = 1.84±0.17%/day, and the lowest was treatment A3B3 (Demak seedlings broadcast method) of 0.25±0.13%/day. The water quality measurement results obtained indicate that the water quality at the research location is in a tolerable range for the growth of seaweed. Keywords: Gracilaria, seed source, longline, broadcast, off-bottom.
Pengaruh Perbedaan Metode Budidaya dan Asal Bibit Terhadap Pertumbuhan Gracilaria verrucosa yang Dibudidayakan di Tambak Desa Tambakbulusan Kecamatan Sayung Kabupaten Demak Hani Nuraini; Sri Rejeki; Rosa Amalia; Lestari L Widowati; Restiana Wisnu
Sains Akuakultur Tropis : Indonesian Journal of Tropical Aquaculture Vol 6, No 1 (2022): SAT edisi Maret
Publisher : Departemen Akuakultur FPIK UNDIP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/sat.v6i1.12575

Abstract

RINGKASANRumput laut (Gracilaria verrcosa) merupakan jenis yang dapat dibudidayakan di tambak, meskipun habitat awalnya berasal dari laut. Tujuan penelitian ini untuk mengetahui pengaruh metode dan lokasi asal bibit G.verrucosa. yang berbeda terhadap pertumbuhan G.verrucosa ditambak. Penelitian ini dilakukan pada bulan Agustus - November 2020 di Desa Tambakbulus Kecamatan Sayung Kabupaten Demak, Jawa Tengah. Metode yang digunakan dalam penelitian ini yaitu metode longline, broadcast, dan off- bottom. Bibit G.verrucosa berasal dari Tambak Demak, Semarang dan Brebes, 3 wilayah tersebut merupakan pusat pembudidaya yang menyediakan G.verrcosa di wilayah Jawa Tengah. Metode yang digunakan yaitu metoda eksperimental. Rancangan Percobaan yang digunakan yaitu RAL (Rancangan Acak Lengkap) 2 faktorial. 2 faktor tersebut yaitu faktor pertama: asal bibit (A): AS (Semarang); AD (Demak); AB (Brebes). Faktor kedua: metoda budidaya (L, O, B): L (longline); O (off-bottom); B (broadcast). Sehingga didapatkan 9 perlakuan: ASL, ASB, ASO, ADL, ADB, ADL, ABL, ABB, ABO, masing-masing perlakuan diulang 12 kali ulangan. Bibit G.verrucosa yang digunakan diawal pemeliharaan yaitu sebanyak 100 gram untuk masing – masing perlakuan dan pengulangan. Data yang dikumpulkan meliputi: pertumbuhan G.verrucosa selama pemeliharaan. Nilai SGR (Specific Growth Rate) dianalisis menggunakan ANOVA. Hasil penelitan menunjukkan bahwa asal bibit dan metoda budidaya yang berbeda berpengaruh nyata (P<0.05) terhadap SGR, SGR tertinggi yaitu pada perlakuan ASL (bibit Semarang, metoda longline) sebesar 1.67±0.22%/hari dan terendah yaitu pada perlakuan ABO (bibit Brebes, metoda broadcast) sebesar 0.52±0.14%/hari. Berdasarkan hasil pengukuran kualitas air yang diperoleh selama penelitian bahwa kualitas air pada lokasi penelitian masih dalam kisaran optimal untuk menunjang pertumbuhan G.verrucosa. Kualitas air DO berkisar 3.4-8.4, suhu (oC) berkisar 25-32.9, pH berkisar 7.4-8.7, salinitas (ppt) berkisar 25-32.9, nitrat (mg/l) berkisar 1.2-2.1, nitrit (mg/l) berkisar 0.01-0.016, fosfat (mg/l) berkisar 0.12-0.5, amoniak (mg/l) berkisar 0.03-0.4. Kata kunci: Gracilaria verrucosa, asal bibit, metode budidaya, SGR (Specific Growth Rate).
Co-Authors Dinda Puspitarini Hani Nuraini Lestari L Widowati Restiana Wisnu Rosa Amalia Ttitik Susilowati