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A technical and economic evaluation of supplemental feeding strategies for Nile tilapia (Oreochromis niloticus L.) reared in lake-based cages

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Date
2022-03
Author
Romana-Eguia, Maria Rowena R. ORCID
Samoranos, Mark Neil
Aya, Frolan ORCID
Alava, Veronica R.
Salayo, Nerissa D.
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140
ASFA keyword
tilapia culture ASFA
feeding ASFA
growth ASFA
eutrophic lakes ASFA
AGROVOC keyword
supplemental feeding
Nile tilapia AGROVOC
lake cage farming
tilapia AGROVOC
Taxonomic term
Oreochromis niloticus GBIF
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Cited times in Scopus



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Abstract
Tilapia cage farming in eutrophic lakes uses low stocking densities since tilapias can thrive mainly on natural food or minimal supplementary feeding. For semi-intensive Nile tilapia cage culture, feeding strategies to improve productivity are adopted based on technical viability and cost efficiency, as assessed in the present study. Tilapia fingerlings stocked in triplicate cages per treatment were reared in Laguna de Bay, Philippines for five months, one run each during the dry and wet seasons. The treatments were: I – UNFED or no feeding; II - FED, fish fed for the entire 155 days; III - D45, fish fed from day 45 to harvest; and IV - D75, or fish fed from day 75 to harvest. Average weight gain or AWG (153.18 g and 225.85g, for dry and wet seasons, respectively) were highest in FED. Growth parameters in all fed treatments were significantly higher (p<0.05) than in UNFED for both seasons. Survival rates were higher during the wet season (66-70%) compared to the dry season (35-37%). Moreover, in the wet season, when the lake’s primary productivity is low, full feeding can be done without compromising lake water quality. Results showed that it favored high AWG, survival, reasonable market price, and profit.
URI
http://hdl.handle.net/10862/6307
Suggested Citation
Romana-Eguia, M. R. R., Samoranos, M. N., Aya, F., Alava, V. R., & Salayo, N. D. (2022). A technical and economic evaluation of supplemental feeding strategies for Nile tilapia (Oreochromis niloticus L.) reared in lake-based cages. Israeli Journal of Aquaculture - Bamidgeh, 74, IJA.74.2022.1687894. https://doi.org/10.46989/001c.33604 
DOI
10.46989/001c.33604
Type
Article
ISSN
0792-156X
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  • Journal Articles [1175]

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