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No Thumbnail AvailableProjectThe 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
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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). -
No Thumbnail AvailableProjectSeabass (Lates calcarifer) culture in Thailand
Regional Seafarming Development and Demonstration Project
1988Also available in:
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No Thumbnail AvailableProjectMass production of seabass, Lates calcarifer (Bloch) by environmental manipulation
Establishment of a Network of Aquaculture Centres in Asia
1986Also available in:
No results found.Seabass, Lates calcarifer (Bloch), is an important aquaculture species in many Southeast Asian countries. The fish has been successfully spawned by hormonal manipulation since 1973. To minimize the use of expensive hormones as well as stress on the fish through handling and hormonal injections, environmental manipulation, mainly through control of salinity and temperature to induce spawning in captivity was used. With this method, some 50–100 million fry and fingerlings were produced per year Co ntinuously at the Satul Fisheries Station in Satul, Thailand. This report describes the methodology of environmental manipulation, pre-spawning behavior, larval rearing techniques and monthly production the seabass.
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