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INCREASING COLOR QUALITY OF RED EMPEROR SNAPPER Lutjanus sebae SEED THROUGH ENRICHED DIET WITH RED FRUIT Pandanus conoideus OIL AS BETA-CAROTEN SOURCE Titiek Aslianti; Afifah Nasukha
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

Market price of red emperor snapper Lutjanus sebae is often determined by its color performance. Adding beta-carotene on a fish diet would possibly escalate red pigmentation. Oil from a red fruit (Pandanus conoideus, Lam) known as potential beta-carotene source was used as a supplement diets. The dosage of 10, 5, and 0 ml were added to every kg of pellet as the treatment. Three hundred seeds with initial average length of 8.43±0.9 cm and body weight of 13.22±3.9 g were stocked in each of three unit fiberglass tank of 4 m3 seawater (salinity of 33-34). Experiment was conducted during three-month periods. Feeding frequency was twice a day with dosage of 3% of biomass. Monthly monitoring was done to measure the growth rate. Color performance was taken by digital photography at the end of observation and analyzed by conversion methods of color gradation using “Microsoft Adobe Photoshop-8”program. Carotene contents in the diets and fish body was examined. Fed effectivity values were observed by analysis of feed conversion ratio (FCR) and water quality that observed every 3 days. The results showed that the Pandanus conoideus oil as beta-carotene source had a significant role in increasing performance of red emperor snapper color i.e. brighten in red color. Ten ml dosage of Pandanus conoideus oil gave the best color and growth performance with 17.99 cm and 143.10 g for total length and body weight respectively, with 95.67% survival rate.Keywords: Beta-carotene, Color Performance, Red emperor snapper, Red fruit oil.

DIFFERENT PERCENTAGE OF WATER EXCHANGE ON GROWTH OF CORAL TROUT GROUPER FINGERLING (Plectropomus leopardus) Titiek Aslianti
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 2 No. 2 (2010): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Coral trout grouper (Plectropomus leopardus) is the prospective aquaculture commodities with a high demand. Fingerling culture is the one of shortly rearing time methods for grow out in net-cages in order to produce continuously. Two hundred fishes with initial total length 16.6±0.5 cm and 72.2±7.6 g of body weight were stocked in each of three of concrete tanks of 4m3 seawater. Water replace as a treatment was applied i.e. A (200%/day), B (300%/day) and C (400%/day).respectively. Feeding frequency of pellet was done twice a day of about 3 - 5% of body weight. Survival and growth of fishes were monitored during two-month period. The result showed that the different percentage of water replace had a significant role in increasing the growth and survival rate of the fishes. Water replaced of 400% daily (treatment C) gave the best survival rate (97%) and growth performance (TL 21.61±0,54 cm; BW 156.84±1.05 g). In contrast, the treatment B (300%/day) and A (200%/day) resulted in a lower survival and growth , i.e. (SR 95.5%; TL 19.51±0.52 cm; BW 140.96±0.08 g) and A (SR 93%; TL 19.08±0.30 cm; BW 132.2±2.65 g)., respectively.Keywords: Coral trout grouper, growth, survival rate, water exchange

VERTEBRAL DEVELOPMENT AND PROTEASE ACTIVITY OF LARVAL MILKFISH, Chanos chanos Forsskal IN DIFFERENT REARING MEDIA Titiek Aslianti; Afifah Nasukha; Irwan Setyadi
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 6 No. 1 (2014): Electronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

The milkfish (Chanos chanos Forsskal) seed quality is an important factor for supporting the fisheries industrialization program . The egg fertility and larval rearing management are two main factors to improve the quality of the seed. The aim of this research was to obtain the information about those two indicators on milkfish larvae, reared in different media. About 100,000 eggs were located in 6 units of the outdoor concrete tank with volume of 6 m3. Larvae were reared due to the rearing standard procedure while the feeding management was adapted during larvae development. Two different treatments in larval rearing medium were with and without the addition of molasses, subsequently in triple trials. This study started from hatching day (0 DAH) until the end of larval rearing period (16-18 DAH). The growth parameters such as vertebrae analyses and survival were taken in the end of research periods, while protease assessment was analyzed every day using tyrosine and casein standard methods. The results showed that the molasses addition produced a higher growth (TL 12.95±0.87 mm) and survival rate (87.66±1.52%), better vertebral performance (44-45 segments), and higher protease activity (0.1392-0.3863 U/ml/min) than without molasses addition. The results indicated that molasses addition in larvae rearing medium improved the larvae quality. Keywords: Protease enzime activity,milkfish seeds, molasses, vertebrae

NATURAL FEED (ROTIFER) MANAGEMENT ON ORANGE SPOTTED GROUPER Epinephelus coioides LARVAL REARING Titiek Aslianti; Irwan Setyadi
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 6 No. 2 (2014): Electronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

ABSTRACT According to Indonesian Standard Quality, the optimal seed production of orange spotted grouper (Epinephelus coioides) has been unsuccessful due to the problems occurred during larval rearing period. Efforts on mass rearing of larvae has been carried out in this study to optimize the natural feeding (rotifer). The purpose of this research was to obtain the information about an appropriate duration time for natural feeding (rotifer) to produce higher survival rate. The treatment for providing rotifers on larvae (days after hatching/DAH) i.e., (A) 20 days, (B) 25 days, (C) 30 days, and (D) 35 days. Rotifers were enriched with DHA Selco. Experiment used fiber tanks with 1 m3 capacity with a completely randomized design (CRD) and three replicates. The larvae was reared to achieve the juvenile phase (D-45). The best results from 1 m3 tanks were then reared using concrete tanks of 6 m3 and 10 m3 capacities. The results showed that feeding of rotifers up to 25 DAH larvae on fiber tanks (1 m3) produced the hughest survival rate (7.63 %). Meanwhile, the mass reared in 6 m3 and 10 m3 concrete tanks produced survival rate of 4.9±3,54% and 8.8±2.26%, respectively. The homogenous size was relatively high (80%) and the seed abnormality was relatively low (0.4%). Keywords: rotifers, feeding time, Orange Spotted grouper larvae, Epinephelus coioides

DAMPAK MOLASE TERHADAP PENINGKATAN KUALITAS BENIH BANDENG (Chanos chanos Forskal ) PRODUK HATCHERY SKALA RUMAH TANGGA DI BALI UTARA Titiek Aslianti; Afifah Nasukha
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 11 No. 3 (2019): Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Tidak stabilnya kualitas benih ikan bandeng produk Hatchery Skala Rumah Tangga (HSRT) di Bali Utara berdampak langsung terhadap produksi budidaya yang terus menurun. Mengantisipasi hal tersebut telah dilakukan perbaikan manajemen dalam proses produksi benih. Penelitian ini dilakukan di lima unit HSRT masing-masing menggunakan 3 unit bak beton berkapasitas 6 m3 yang berada di luar ruangan (outdoor). Setiap bak diisi telur bandeng dengan kepadatan 100.000 butir/bak. Penelitian diulang sebanyak 3 siklus, dengan metode pemeliharaan larva berdasar pada SOP dan CPIB Desinfeksi telur menggunakan iodin 50 ppm selama 20 menit. Tetes tebu (molase) sebanyak 2 ppm, ditambahkan ke-dalam media pemeliharaan larva sebagai stimulan dan diberikan mulai hari ke-dua (D-2) sampai menjelang panen (D16-D18). Pemberian pakan alami dan pakan buatan disesuaikan dengan perkembangan umur larva. Hasil penelitian menunjukkan bahwa kelangsungan hidup benih di HSRT berkisar 82,57-92,04% dengan kisaran panjang total benih setiap siklus 11,96-13,56 mm. Hasil panen setiap bak mencapai 68.444-79.444 ekor, jauh lebih baik daripada produksi sebelumnya yang berkisar 35.750-42.900 ekor/bak, dengan kelangsungan hidup 61,54-63,57%, dan ukuran panjang total bervariasi 10-11,8 mm serta kondisi tulang belakang masih berbentuk tulang rawan. Berdasarkan pertumbuhan, kelangsungan hidup, performa morfologi benih dan kondisi tulang belakang, hasil penelitian ini menunjukkan bahwa penggunaan molase berdampak positif terhadap lingkungan pemeliharaan larva bandeng di HSRT dan mampu menghasilkan benih berkualitas baik sehingga dapat mendukung peningkatan produksi budidaya.

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