No Thumbnail Available

The culture of marine finfishes in floating net cages in Indonesia








Chan, W.L. May 1981. The culture of marine finfishes in floating net cages in Indonesia. Jakarta (Indonesia). 43 p.


Also available in:
No results found.

Related items

Showing items related by metadata.

  • No Thumbnail Available
    Project
    Programme / project report
    Site selection criteria for marine finfish netcage culture in Asia
    Network of Aquaculture Centres in Asia
    1989
    Also available in:
    No results found.

    Netcage culture is a popular method of rearing finfish along the coastline. This new technology utilizes little physical facilities, less space, low initial investment and is moderately inexpensive to operate. Another advantage is the easy and fast harvesting of live fish which fetch higher price in the market. There are two general types of cages, floating and stationary. A floating cage is made up of a floating unit from which a single or a series of netcages are suspended. Some of them are mobile and can be easily towed away. A stationary cage, on the other hand, is tied to fixed poles at their corners. In Asia, finfish like grouper (Epinephelus tauvina), seabass (Lates calcarifer), snapper (Lutjanus spp.) and siganid (Siganus spp.) are cultured in commercial scales in tropical countries such as Singapore, Thailand, Malaysia, Philippines, Indonesia and Hong Kong. While other finfish like red sea-bream (Pagrosomus major), black sea-bream (Sparus microcephalus), yellow tail (Seriola quinqueradiata), flatfish (Paralichthys olivaceus) etc., are cultured in temperate waters, such as in China, DPRKorea, ROKorea and Japan. Proper site selection for marine netcage culture is of paramount importance as it may considerably affect construction costs, operating costs, growth and survival rate of the fish, and the period of usefulness of the cages. Although floating cages can be usually towed away, sometimes it is not economical to do so
  • No Thumbnail Available
    Project
    Programme / project report
    Cockle culture 1988
    Also available in:
    No results found.

    *
  • No Thumbnail Available
    Project
    Programme / project report
    The food and feeding of seabass Lates calcarifer, grouper Epinephelus tauvina and rabbitfish Siganus canaliculatus in floating net cages at the National Seafarming Development Centre, Lampung, Indonesia 1989
    Also available in:
    No results found.

    Four cage feeding trials involving a total of fifteen different dietary feeding regimes were conducted with seabass (Lates calcarifer), grouper (Epinephelus tauvina) and rabbitfish (Siganus canaliculatus) from fingerling to market size over a 100 to 156-day rearing period. Seabass fed frozen fish or a moist pellet displayed the best growth response, with fish (30/m3) growing from an initial weight of 8.9g and 8.5g to a final weight of 285.5g and 257.5g in 156 days, with a food conversion ratio o f 3.77 – 5.10 (dry matter basis 0.96 – 1.30) and 1.89 – 3.20 (dry matter basis 1.15 – 1.95), and with a survival of 93.3% and 93.3%, respectively. During the seabass trial the estimated feeding cost/kg fish produced was Rp 1458 – 1964 and Rp 1537 – 2584 for fish fed frozen fish and moist pellet, respectively. Grouper fed frozen fish and moist pellet also displayed the best growth response, with fish (30/m3) growing from an initial weight of 23.8g and 25.8g to a final weight of 471.7g and 388.7g in 156 days, with a food conversion ratio of 3.53 – 4.16 (dry matter basis 0.89 – 1.06) and 1.73 – 2.96 (dry matter basis 1.06 – 1.80), and with a survival of 90% and 98.3%, respectively. During the grouper trial the estimated feeding cost/kg fish produced was Rp 1342 – 1603 and Rp 1382 – 2396 for fish fed frozen fish and moist pellet, respectively. In the case of rabbitfish, the best growth was observed for fish fed a dry in-house crumble containing 31% crude protein; fish (15/m3) growing from an initial weight of 51.7g to a final weight of only 110.3g in 100 days, with a food conversion ratio of 3.48 (dry matter basis 3.08) and estimated feeding cost/kg fish produced of Rp 2349. However, all rabbitfish fed formulated rations displayed marked sexual activity by the end of the feeding trial (62 – 93% of the fish yielding milt or eggs on hand stripping).

Users also downloaded

Showing related downloaded files