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Growth and survival of Nile tilapia fingerlings in net cages without supplemental feed in Laguna Lake, Philippines

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Date
1986
Author
Basiao, Zubaida
San Antonio, Antonio
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Abstract
Oreochromis niloticus fingerlings were stocked at densities of 50, 100, 150 and 200 fish/m super(2) in fixed net cages in Laguna Lake, Philippines. These were reared without supplemental feed on 1 April-30 July 1980, 5 August-3 December 1980, and 19 December 1980-19 April 1981. Water temperature, dissolved oxygen, chloride level and pH for the three periods were measured outside the net cages. Growth rates were highest at 50 and 100 fish/m super(2) reared between April and July when phytoplankton biomass was high with a peak production observed in June (65.5 g/m super(2)), and zooplankton biomass ranged from 9.3 to 32.68 g/m super(2). Under these conditions, fish initially weighing 1.6-1.7 g grew to a marketable size of 106-124 g in four months. Those stocked at 150 and 200 fish/m super(2) had lower weights but still weighed over 80 g. None of those in the other two rearing periods exceeded 50 g after four months. Survival and fish yield during April-July were also higher than for those reared during the other periods.
URI
http://hdl.handle.net/10862/259
Suggested Citation
Basiao, Z., & San Antonio, A. (1986). Growth and survival of Nile tilapia fingerlings in net cages without supplemental feed in Laguna Lake, Philippines. In J. L. Maclean, L. B. Dizon, & L. V. Hosillos (Eds.), The First Asian Fisheries Forum: proceedings of the First Asian Fisheries Forum, Manila, Philippines, 26-31 May 1986 (pp. 533-538). Manila, Philippines: Asian Fisheries Society.
Subject
cage culture ASFA; fish culture ASFA; growth ASFA; stocking density ASFA; survival ASFA; Finfishes; Nile tilapia; Tilapia culture; Cage culture; Periodicity; Stocking density; Fingerlings; Philippines -- Laguna de Bay; Tilapia; Oreochromis niloticus; Philippines
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  • AQD Conference Proceedings [300]

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