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Titiek Aslianti
Institute for Mariculture Reasearch and Development (BBPPBL), Gondol - Bali
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology

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Journal : BERITA BIOLOGI

 1 
PERTUMBUHAN IKAN BANDENG (Chanos chanos) ANTARA BENIH HSRT DAN GENERASI KEDUA (G-2) TERSELEKSI [Growth Performance of Milkfish, (Chanos chanos) Between Small Scale Hatcheries and of Selected Second- Generation (G-2) Sources] Kusumawati, Daniar; Jamaris, Zafran; Aslianti, Titiek
BERITA BIOLOGI Vol 17, No 1 (2018)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (4230.251 KB) | DOI: 10.14203/beritabiologi.v17i1.2937

Abstract

Currently, there is a national concern regarding to the decrease of milkfish production from ponds in North Java due to a low quality of milkfish seed produced by small scale hatcheries in Bali, which is the main producer of milkfish seed. The quality of seed is strongly related to the quality of eggs (fertility), while quality of eggs produced depends on the management of brood stocks carried out by the hatcheries. Growth rate and growth hormone profiles are some of the biological aspects that could be used as a basis/benchmark to evaluate quality level of milkfish seed reared in ponds. The aim of this experiment was to evaluate growth rate and growth hormone profile performance between selected G-2 seed and small scale hatcheries seed as control population the growth rate. Research on grow-out of milkfish seed was conducted at the IMRAD ponds facility in Pejarakan, using milkfish seed produced by small scale hatcheries as well as selected second-generation (G-2) seed, each with the density of 5000 seed/pond (1 pond=0.5 ha). The seeds were fed with dry pellet and reared for 5 – 6 months. The results showed that the seed produced with standard operational procedure (SOP) by small scale hatcheries were having longer (F hit. = 13.68 > F tabel 1%) and heavier body washt (F hit. = 18.98 > F tabel 1%) better than selected G-2 seed and small scale hatcheries seed without SOP with high growth hormone concentration (F hit. = 4.95 > F tabel 5%).
PLANKTON DISTRIBUTION IN CONTROLLED WATER OF MILKFISH LARVA CULTURE SYSTEM Nasukha, Afifah; Aslianti, Titiek
BERITA BIOLOGI Vol 18, No 3 (2019)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v18i3.3485

Abstract

The selection of planktons as live feed for milkfish larvae is a vital tool to meet the natural character as herbivorous species and to fulfill the needs for nutritious food for fish larval growth and survival. Phytoplankton Nannochloropsis sp. and zooplankton rotifer (Brachionus sp.) were two-selected plankton used as the main food source for the milkfish larvae. We performed this study in two times larval culture batch with four observations of tanks as replication. The results showed that we nourished both targeted planktons as larval food, regarding the positive impacts on larval growth (12±1,37 mm of total length, 7±4.89 mg of body weight) and a high survival rate (65.93?77.70%) achieved at the end of the culture period. Plankton diversity analysis presented that Class of rotifer (Monogononta) and Nannochloropsis sp. (Eustigmatophyceae) were both counted as the most dominant plankton group found in the rearing media, showing a decent sign of food supply for fish in rearing water column. The total number of planktons was high and had the tendency to follow the concentration of selected planktons over the culture period in the controlled water.  
Co-Authors Afifah Nasukha Daniar Kusumawati Jamaris, Zafran