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All Journal Jurnal Ilmu dan Teknologi Kelautan Tropis JURNAL BIOLOGI INDONESIA JFMR (Journal of Fisheries and Marine Research) Media Akuakultur Journal of Tropical Marine Science Depik Jurnal Ilmu-Ilmu Perairan, Pesisir dan Perikanan Depik Jurnal Ilmu-Ilmu Perairan, Pesisir, dan Perikanan
Ni Wayan Widya Astuti
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Engineering Environmental Science Library & Information Science

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Journal : Jurnal Ilmu dan Teknologi Kelautan Tropis

 1 
THE GROWTH PATTERN OF BLACKSADDLED CORALGROUPER LARVAE (Plectropoma laevis LACEPÈDE, 1801) AND THEIR CONSUMPTION RATE TO ZOOPLANKTON ROTIFER (Brachionus rotundiformis) Regina Melianawati; Ni Wayan Widya Astuti; Bejo Slamet
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 4 No. 2 (2012): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (237.983 KB) | DOI: 10.29244/jitkt.v4i2.7784

Abstract

Blacksaddled coralgrouper Plectropoma laevis has been started to conserve to prevent from over exploitation. The study purposes were to determine the growth pattern during larvae to juvenile stage of Blacksaddled coralgrouper and their consumption rate to zooplankton rotifers Brachionus rotundiformis. Domesticated broodstocks have been rearing in 100,000 l concrete tanks. The eggs from spawning broodstocks were hatched and the larvae have been kept to juvenile. Larvae rearing was done in 6,000 l concrete tanks. During the rearing period, larvae were fed with zooplankton rotifer, artemia and artificial food. Parameters measured were eggs and oil globule diameter, larval total length, length of larval dorsal fin and ventral fin, the number of zooplankton that consumed by larvae and water temperature. Microscopic method was used to measure the parameters. The result showed that eggs and oil globule diameter ranged in 800-850 μm and 168-200 μm, respectively. Total length of newly hatched larvae was 2.53±0.13 mm. The growth pattern of total length from larva to juvenile stage was exponential, while the growth pattern of dorsal fin and ventral fin length was linear. Larvae grew very fast after 35 days old. The pattern of larval consumption rate to zooplankton rotifers was linear. Time period from larvae to juvenile stage was 45-55 days on water temperature 27-29oC.Keywords: growth, consumption rate, rotifers, larvae, Blacksaddled coralgrouper
EFFECT ON DIETARY PROTEIN AND FEEDING RATE ON GROWTH OF TIGER GROUPER (Epinephelus fuscoguttatus) JUVENILE Muhammad Marzuqi; Ni Wayan Widya Astuti; Ketut Suwirya
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 4 No. 1 (2012): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (100.106 KB) | DOI: 10.29244/jitkt.v4i1.7806

Abstract

The grouper fish culture was developed after its succesful seed production in hatchery well known. In grow-out culture grouper, the protein requirement and feeding rate have to know well in order to understand the effectiveness on feed utilization . The experiment was designed by factorial design with the first factor as 3 dietary protein (36%, 42%, 48%) and the second factor as 3 feeding rate ( 1,5%, 2,0%, 2,5%). Ten of juvenile tiger grouper (102, 51-102, 73 g of body weight) were stocked in 27 polycarbonate tanks with 400 l volume each. Each tank was equiped with aeration and flow-through water system. Fish was fed three time per day i.e. 08:00, 11:30 and 15:30 Central Indonesia Standard Time for 16 weeks. Every week was measured body weight, survival rate, and feed quantity. The parameter used in this experiment were weight gain, spesific growth rate, feed efficiency and survival rate. The results of the experiment showed that the combination of protein level (36%, 42%, 48%) with feed ratio (1.5%, 2.0%, 2.5%) gave response on growth, weight gain and survival rate. Combination dietary protein level of 48% and feed ratio 1.5% gave higher weight gain and survival rate with values of 104.05 ± 5.89% and 96.67 ± 5.57 %, respectively.Keywords: Dietary protein and feeding rate , growth, tiger grouper (Epinephelus fuscoguttatus)
Co-Authors Afifah Nasukha Ahmad Muzaki Ansari, Mohamad Ariani, Ni Kadek Bejo Slamet Dewi, Luh Yuliani Fain, Hamdanul Haryanto, Slamet Jasmine Masyitha Amelia Katimin, Katimin Ketut Mahardika Ketut Suwirya Kurdi Kurdi Mastuti, Indah Miniartini, Made Muhammad Marzuqi Muhammad Marzuqi Mujiono Mujiono Mustakim Mustakim Mustaqim Mustaqim, Mustaqim Nyoman Adiasmara Giri Paramitha, Komang Putri Regina Rarastoeti Pratiwi Regina Melianawati Regina Melianawati Sadewa, Ketut M. Arya Sedana, I Made Shadiq, Ja'far Suko Ismi Suko Ismi Sunarto Sunarto Sunarto, Mujiono Suwitra, I Nyoman Tantra, Kadek Mas Yasmina Nirmala Asih zailani, Ahmad