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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 AvailableProjectREPORT OF THE SECOND NATIONAL COORDINATORS' MEETING ON REGIONAL SEAFARMING DEVELOPMENT AND DEMONSTRATION PROJECT
Regional Seafarming Development and Demonstration Project
1988Also available in:
No results found.The Second National Coordinators' Meeting of the Regional Seafarming Demonstration and Development Project (RAS/86/024) was held at the Chateau-at-Scotts Hotel, Singapore, from 20 to 23 September, 1988. A study tour of Singapore's netcage fish farms and marine aquaculture research facilities was made on 22 September. The participants of the Meeting also attended a seminar on the country status of cage culture which was conducted on 21 September from 2000 to 2230 Hours by the trainees of the regi onal netcage finfish culture training course. -
No Thumbnail AvailableProjectREPORT OF THE FIRST NATIONAL COORDINATORS' MEETING ON REGIONAL SEAFARMING AND DEVELOPMENT PROJECT
Regional Seafarming Development and Demonstration Project
1987Also available in:
No results found.This information is directed to representatives of governments in the Asian Pacific Region participating in the Technical Meeting of National Project Coordinators/Directors in Bangkok, Thailand on 27–29 October 1987. It regards to enligthen participants on the existing seafarming resources of the Philippines which include among others: (a) 467.13 ha oyster farms managed by 1,805 operators producing 16,465 mt in 1986. (b) 393.35 ha mussel farms managed by 596 operators producing 12,114 mt in 1986 , and (c) 4,975.73 ha Eucheuma seaweed farms managed by 4,926 operators producing 168,868 mt in 1986. The natural grounds, farming areas and potential farming sites of oyster and mussel in the Philippines are presented. The Eucheuma seaweed farming provinces are also presented. Recent developments on the farming of oyster, mussel, Eucheuma, abalone, Porphyra, Caulerpa, Gracilaria, Gelidium, Hippopus and Tridacna are discussed.
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