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All Journal Jurnal Akuakultur Indonesia Journal of Indonesian Coral Reefs
Dody D Trijuno, Dody D
Jurusan Perikanan - Fakultas Ilmu Kelautan dan Perikanan Universitas Hasanuddin
Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences Other

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The Effects of Clove Oil in Color Changes and Zooxanthellae Density on Porites lobata Rahim, Sri Wahyuni; Nessa, M. Natsir; Trijuno, Dody D; Djawad, M. Iqbal
Journal of Indonesian Coral Reefs Vol 1, No 3 (2012)
Publisher : Journal of Indonesian Coral Reefs

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Destructive fishing such as using cyanide in capture of ornamental fish has caused damage to the coral reefs, this is suggested the use of clove oil which considered eco-friendly fishing. This study aims to analyze the changes of color, zooxanthellae density and mitotic index of coral Porites lobata after exposure to several concentrations of clove oil. Experimental design was a factorial design, which consists of six concentrations and five time treatments with 3 replication. Coral was placed into the 1.0x0.5x1.0 m aquarium that contains clove oil solution in different concentrations (control, 20, 30, 40, 50, and 60 ppm) for 5 min and then transferred to a tank containing clean seawater for 60 seconds and then removed to tanks for the recovery process. Observation was made everyday for coral color changes in 17 days period and on day 1, 5, 9, 13 and 17 for zooxanthellae density and mitotic index.  The results showed that the were no changes in Porites lobata colors until the 17th day after exposure to 20–60 ppm of clove oil and there was no significant difference in the zooxanthellae density and mitotic index of the Porites lobata on concentration variation, while zooxanthellae densities and mitotic index showed significant difference on time (day) variation. This suggested that exposure to clove oil at  a concentration of 20–60 ppm did not affect the color change, zooxanthellae density and mitotic index of Porites lobata.
Growth response of koi fish fed on the diet containing Euchema cottoni Saade, Edison; Trijuno, Dody D; Haryati, ,; Zainuddin, ,
Jurnal Akuakultur Indonesia Vol. 13 No. 2 (2014): Jurnal Akuakultur Indonesia
Publisher : Indonesian Society of Scientific Aquaculture (ISSA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2792.998 KB) | DOI: 10.19027/jai.13.140-145

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ABSTRACT Seaweed meal has been used as ingredient, binding and thickening agent in the diet. The objective of this study was to examine the biological response of Cyprinus carpio haematopterus consumed several types of gel feed using Euchema cottoni as thickening agent. Four types of diets containing different level of moisture were used i.e. 60−90% (treatment A), 30−60% (treatment B), 10−30% (treatment C), and <10% (treatment D). C. carpio haematopterus with average body weight of 13.58±1.31 g were used in this study. Fish were cultured for six weeks and stocked at the density of 15 fish/aquarium. The completely randomized design with four treatments and two replications were used in this study. Survival, growth rate, and feed efficiency were used as evaluating parameters. According to ANOVA results, the effect of treatments on all tested parameters were similar or not significant (P>0.05). This findings have indicated that the different types of gel diets (wet, semi-wet, semi-dry, and dry) had similar effects on survival, growth, and feed efficiency in C. carpio haematopterus. Keywords: gel feed, Cyprinus carpio haematopterus, diet type, growth, feed efficiency ABSTRAK Tepung rumput laut telah dapat digunakan sebagai bahan baku binder (bahan perekat), dan thickening agent (bahan pengental). Tujuan penelitian ini adalah untuk menguji respons biologis ikan koi, Cyprinus carpio haematopterus yang mengkonsumsi beberapa tipe pakan gel yang menggunakan tepung rumput laut, Euchema cottoni sebagai bahan pengental pakan. Bahan baku utama pakan uji adalah tepung ikan, tepung kepala udang, dedak halus, minyak ikan, vitamin dan mineral mix, carboxymethil cellulose (CMC), serta tepung E. cottoni. Empat macam pakan digunakan dalam penelitian ini, yaitu pakan gel basah dengan kandungan air 60−90% (perlakuan A), pakan gel semibasah dengan kandungan air 30−60% (perlakuan B), pakan gel semikering dengan kandungan air 10−30% (perlakuan C), dan pakan gel kering dengan kandungan air <10% (perlakuan D). Ikan uji yang digunakan adalah ikan koi dengan bobot rata-rata 13,58±1,31 g dengan kepadatan 15 ekor/unit pelakuan. Rancangan acak lengkap dengan empat perlakuan dan dua ulangan digunakan dalam penelitian ini. Parameter yang diukur adalah kelangsungan hidup, pertumbuhan dan efisiensi pakan. Berdasarkan hasil ANOVA, pengaruh perlakuan terhadap ke semua parameter uji adalah sama (P>0,05). Hal ini berarti bahwa tipe pakan gel yang berbeda (basah, semibasah, semikering, dan kering) memiliki efek yang sama terhadap kelangsungan hidup, pertumbuhan dan efisiensi pakan pada ikan koi. Kata kunci: pakan gel, Cyprinus carpio haematopterus, tipe pakan, pertumbuhan, efisiensi pakan 
Co-Authors , Haryati, , Edison Saade M. Iqbal Djawad, M. Iqbal M. Natsir Nessa Sri Wahyuni Rahim, Sri Wahyuni Zainuddin, .