Optimasi kandungan nutrient pakan untuk kesinambungan pemijahan dan peningkatan mutu Kerapu Batik (Epinephelus polyphekadion) ,
| Collection Location | Balai Besar Riset Budidaya Laut dan Penyuluhan Perikanan Gondol Bali |
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| Author(s) | N. Adiasmara Giri |
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| Series Title | GMD | Text |
| Language | Indonesia |
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| Publishing Year | 2003 |
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| Collation | 99-103 |
| Abstract/Notes | Groupers are fishes of high economic importance and there is considerable interest in the development of grouper aquaculture, especially in the Asia-Pacific region. Groupers have been declared as the one of the priority species for development of mariculture in Indonesia. Hatchery technology for seed production of humpback grouper (Cromileptes altivelis) and tiger grouper (Epinephelus tuscoguttatus) has been successfully developed and able to produce seed for grow- out activity. Artificial feed is an essential component for supporting the development of grouper grow-out industry. However, very limited information on nutritional requirement is available this time as the bases for developing artificial feed for grouper. Result of several experiments showed that dietary protein requirement for groupers are 47 to 60 %, depend on species. Humpback grouper requires feed containing 54.2 % protein, 9 - 12 % lipid with 1 - 1.4 % n-3 HUFA for maximum growth. Dietary protein requirement for maximum growth of tiger grouper was only 47 %. Grouper has limited ability to utilize dietary lipid as an energy source. Therefore, high lipid feed does not effective to support growth of fish. Dietary vitamin C has an essential role on growth and healthy condition of grouper. Humpback grouper requires feed containing 30 mg vitamin C (APMg)/kg feed for normal growth and to prevent deficiency symptoms. Practical application of artificial feed on grow-out of humpback grouper in net cages gave good growth of fish and comparable to fish fed trash fish. The FCR was 1.3 - 1.6 and 6.0 for fish fed artificial feed and trash fish, respectively. KEYWORDS: grouper, dietary nutrient, feed development |
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