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All Journal JURNAL VOKASI ILMU-ILMU PERIKANAN (JVIP) Student Research Journal
Welem L. Turupadang
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Religion Agriculture, Biological Sciences & Forestry Humanities Economics, Econometrics & Finance Education Environmental Science Social Sciences

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Budidaya Kappaphycus striatum dari Hasil Pembibitan Bersama Makroalga Coklat (Sargassum SP) dalam Keramba Jaring Apung di Pulau Semau Kabupaten Kupang Safronius Avatorio Peol; Welem L. Turupadang; Yulianus Linggi
Student Research Journal Vol. 4 No. 3 (2026): Student Research Journal
Publisher : Sekolah Tinggi Ilmu Administrasi (STIA) Yappi Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/srj-yappi.v4i3.2749

Abstract

Kappaphycus striatum seaweed is a strategic commodity producing high-value carrageenan and is widely cultivated in Indonesia. This study aims to assess the growth rate of Kappaphycus striatum which is seeded with Sargassum sp. in floating net cages (KJA) and then cultivated using the longline method in the waters of Batuhopon, Huilelot Village, Semau Island, Kupang Regency. The study was conducted during August–October 2025 using a Completely Randomized Design (CRD) with four treatments, namely P0 (5 kg Kappaphycus striatum + 0 kg Sargassum sp.), P1 (4.5 kg Kappaphycus striatum + 0.5 kg Sargassum sp.), P2 (3.5 kg Kappaphycus striatum + 1.5 kg Sargassum sp.), and P3 (2.5 kg Kappaphycus striatum + 2.5 kg Sargassum sp.). Observed parameters included daily growth rate, specific growth rate, absolute growth rate, ice-ice disease incidence, and water quality. Data were analyzed using Analysis of Variance (ANOVA). The results showed that the average daily growth rate in all treatments increased until the fifth week, but some treatments decreased in the sixth week. Treatment P0 provided the highest and most stable growth. The results of the ANOVA test showed that the treatment had no significant effect on the daily growth rate (P>0.05), but had a significant effect on the specific growth rate and absolute growth (P<0.05). The highest absolute growth was obtained in treatment P0, followed by P1, P3, and P2. The incidence of ice-ice disease increased gradually from 5% in the first week to 35% in the sixth week. Water quality parameters during the study were in the range that still supported seaweed growth, namely temperature 28–30°C, salinity 30–33 ppt, pH 7.5–8.0, depth 20 cm, and current velocity 0.3–0.4 m/s.
Pengaruh Bobot Bibit Awal Kappaphycus alvarezii terhadap Pertumbuhan, Kandungan Karagenan dan Komposisi Proksimat Melati Ngaddi; Marcelien Dj. Ratoe Oedjoe; Welem L. Turupadang
JURNAL VOKASI ILMU-ILMU PERIKANAN (JVIP) Vol 6, No 1 (2025): November 2025
Publisher : Politeknik Pertanian Negeri Kupang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35726/jvip.v6i1.7489

Abstract

Penelitian ini bertujuan untuk menganalisis pengaruh bobot bibit awal Kappaphycus alvarezii terhadap pertumbuhan, kandungan karagenan, dan komposisi metabolit primer. Penelitian dilaksanakan selama 45 hari (Mei–Juli 2024) di Perairan Hansisi-Semau, Kabupaten Kupang. Percobaan menggunakan Rancangan Acak Lengkap (RAL) dengan tiga perlakuan bobot bibit awal, yaitu 50 g (A), 100 g (B), dan 150 g (C), masing-masing tiga ulangan. Parameter yang diamati meliputi pertumbuhan berat mutlak, laju pertumbuhan spesifik (SGR), dan kadar karagenan. Data dianalisis menggunakan ANOVA pada taraf kepercayaan 95% dan dilanjutkan dengan uji Beda Nyata Terkecil (BNT) apabila berbeda nyata. Hasil penelitian menunjukkan bahwa bobot bibit berpengaruh signifikan terhadap pertumbuhan berat mutlak (p<0,05). Pertumbuhan tertinggi diperoleh pada perlakuan 150 g (115,0 g), diikuti 100 g (111,3 g), dan 50 g (93,3 g). Sebaliknya, laju pertumbuhan spesifik tertinggi diperoleh pada bobot 50 g (2,34%/hari). Kandungan karagenan tertinggi terdapat pada perlakuan 100 g (32,7%) dan terendah pada 150 g (28,6%). Analisis proksimat pada perlakuan dengan pertumbuhan terbaik menunjukkan kandungan karbohidrat 45,9%, protein 8,2%, lemak 5,7%, dan abu 39,9% (berat kering). Disimpulkan bahwa bobot bibit awal mempengaruhi pertumbuhan dan kandungan karagenan K. alvarezii, dengan bobot 100 g direkomendasikan sebagai bobot optimal karena menghasilkan keseimbangan antara pertumbuhan dan kandungan karagenan.Kata kunci: bobot bibit, pertumbuhan, karagenan, proksimat, Kappaphycus alvarezii
Co-Authors Marcelien Dj. Ratoe Oedjoe Melati Ngaddi Safronius Avatorio Peol Yulianus Linggi