Comparative impact of replacing fish meal with azolla on growth, water quality, and physiology of red tilapia fingerlings at varying salinities

A 210-day experiment to assess the efficacy of substituting azolla plant powder at levels of 0, 20, 40, and 60% for fish meal on red tilapia fingerlings (RTF, initial weight of 18.23 ± 0.12 g) performance under salinity levels of 5, 18, and 28ppt. Among the various conditions, RTF-fed 20% azolla at...

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Published in:Journal of animal physiology and animal nutrition 2024-04, Vol.108 (5), p.1370-1382
Main Authors: Sallam, Ghada R, Helal, Amr M, Mabrouk, Hafez A H, Hermina, Andrew H F G, Habib, Yusuf J, Fayed, Walied M, Dossou, Serge, El Basuini, Mohammed F, Shehata, Akram I
Format: Article
Language:English
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Summary:A 210-day experiment to assess the efficacy of substituting azolla plant powder at levels of 0, 20, 40, and 60% for fish meal on red tilapia fingerlings (RTF, initial weight of 18.23 ± 0.12 g) performance under salinity levels of 5, 18, and 28ppt. Among the various conditions, RTF-fed 20% azolla at 28 and 5ppt salinity showcased the highest specific growth rate (SGR), whereas the lowest SGR was observed in fish-fed 60% azolla at 5ppt salinity. Upon azolla incorporation, noteworthy elevations in phytoplankton, zooplankton, dissolved oxygen (DO), pH, NH , and NO were noted and conversely, azolla introduction led to decreased NH and NO concentrations in all salinity levels. Further, a significant (p 
ISSN:0931-2439
1439-0396
DOI:10.1111/jpn.13980