World Aquaculture Society Meetings

THE REARING OF TENGADAK FISH (Barbonymus schwanenfeldii) IN INDOOR HATCHERY ON  OPTIMAL  SALINITY  AND  CALCIUM MEDIA

Ani Widiyati and Dini Islama*  
Institute for Freshwater Aquaculture Research and Development
Jl. Sempur No. 1 Bogor 16154 Indonesia.
ani_widiyati@yahoo.co.id

Tengadak fish are local commodities of  Borneo and Sumatera that have potential to be developed as the consumption fish.  Low level presumably growth because of external factors which are not optimal in supporting their life,such as rearing media ( salinity  because of tengadak hyperosmotic to their environment and calsium for growth the sceleton system).

This aimed  the  study is to get the rearing technique of tengadak (Barbonymous schwanenfeldii)  on the optimal salinity and calcium  in rearing media.

The experiment design was arranged in factorial completely randomized design with three replications. The treatments included three media salinity levels, that is, 0 ppt, 3 ppt, 6 ppt and four different  calcium level , that is  0 mg L-1, 10 mg L-1, 20 mg L-1, and 30 mg L-1.  The containers used  36 glass aquarium 60x40x40 cm, and total water volume 70 L.   Then it was aerated in order to assist the solubility of calcium and oxygen aeration. The size of fish used was an average length of 2 ± 0.03 cm.  Fish stocking density was 1 fish L-1 . The test feed was fresh silk worm (Tubifex sp), the feed was given ad libitum three times a day    The cultured period was 40 days.   

The result showed that  the  3 ppt salinity media and 20 mg L-1 calcium was the optimal  rearing media of tengadak fish, that  have the best  of absolute growth was 3,84 g(Figure 1) , feed eficiency  was 39,55%(Figure 2), Figure 3 was response curves feed efficiency in each salinity during the experiment  and fish resistance to the flow of water .

Keyword :tengadak, salinity , calcium, growth

*)Lecturer of Syahkuala University      Aceh







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