• Home
  • Browse
    • Current Issue
    • By Issue
    • By Author
    • By Subject
    • Author Index
    • Keyword Index
  • Journal Info
    • About Journal
    • Aims and Scope
    • Editorial Board
    • Publication Ethics
    • Indexing and Abstracting
    • Peer Review Process
  • Guide for Authors
  • Submit Manuscript
  • Contact Us
 
  • Login
  • Register
Home Articles List Article Information
  • Save Records
  • |
  • Printable Version
  • |
  • Recommend
  • |
  • How to cite Export to
    RIS EndNote BibTeX APA MLA Harvard Vancouver
  • |
  • Share Share
    CiteULike Mendeley Facebook Google LinkedIn Twitter
Egyptian Journal of Aquatic Biology and Fisheries
arrow Articles in Press
arrow Current Issue
Journal Archive
Volume Volume 29 (2025)
Volume Volume 28 (2024)
Issue Issue 6
Issue Issue 5
Issue Issue 4
Issue Issue 3
Issue Issue 2
Issue Issue 1
Volume Volume 27 (2023)
Volume Volume 26 (2022)
Volume Volume 25 (2021)
Volume Volume 24 (2020)
Volume Volume 23 (2019)
Volume Volume 22 (2018)
Volume Volume 21 (2017)
Volume Volume 20 (2016)
Volume Volume 19 (2015)
Volume Volume 18 (2014)
Volume Volume 17 (2013)
Volume Volume 16 (2012)
Volume Volume 15 (2011)
Volume Volume 14 (2010)
Volume Volume 13 (2009)
Volume Volume 12 (2008)
Volume Volume 11 (2007)
Volume Volume 10 (2006)
Volume Volume 9 (2005)
Volume Volume 8 (2004)
Volume Volume 7 (2003)
Volume Volume 6 (2002)
Volume Volume 5 (2001)
Volume Volume 4 (2000)
Volume Volume 3 (1999)
Volume Volume 2 (1998)
Volume Volume 1 (1997)
Said et al., M. (2024). Light Limitation Alters Water Quality, Biofloc Composition, Zooplankton Community, and Performance of the Whiteleg Shrimp (Litopenaeus vannamei) Reared with Intensive Biofloc. Egyptian Journal of Aquatic Biology and Fisheries, 28(3), 359-381. doi: 10.21608/ejabf.2024.355970
Mohamed M. Said et al.. "Light Limitation Alters Water Quality, Biofloc Composition, Zooplankton Community, and Performance of the Whiteleg Shrimp (Litopenaeus vannamei) Reared with Intensive Biofloc". Egyptian Journal of Aquatic Biology and Fisheries, 28, 3, 2024, 359-381. doi: 10.21608/ejabf.2024.355970
Said et al., M. (2024). 'Light Limitation Alters Water Quality, Biofloc Composition, Zooplankton Community, and Performance of the Whiteleg Shrimp (Litopenaeus vannamei) Reared with Intensive Biofloc', Egyptian Journal of Aquatic Biology and Fisheries, 28(3), pp. 359-381. doi: 10.21608/ejabf.2024.355970
Said et al., M. Light Limitation Alters Water Quality, Biofloc Composition, Zooplankton Community, and Performance of the Whiteleg Shrimp (Litopenaeus vannamei) Reared with Intensive Biofloc. Egyptian Journal of Aquatic Biology and Fisheries, 2024; 28(3): 359-381. doi: 10.21608/ejabf.2024.355970

Light Limitation Alters Water Quality, Biofloc Composition, Zooplankton Community, and Performance of the Whiteleg Shrimp (Litopenaeus vannamei) Reared with Intensive Biofloc

Article 21, Volume 28, Issue 3, May and June 2024, Page 359-381  XML PDF (927.02 K)
Document Type: Original Article
DOI: 10.21608/ejabf.2024.355970
View on SCiNiTO View on SCiNiTO
Author
Mohamed M. Said et al.
Abstract
An 18-week experiment was performed to explore light limitation effects on water profile, biofloc analysis, zooplankton population, growth, and proximate body analysis of whiteleg shrimp (Litopenaeus vannamei) grown in biofloc system. The experiment was conducted in six 36m3 cement tanks with a water volume of 30m3. Post larvae of L.vannamei shrimp (0.02± 0.0001g) were stocked in tanks at a stocking density of 200animal/m3. The experiment was consisted of two treatments: T1: without light limitation and T2: with light limitation. Significantly higher dissolved oxygen (5.34± 0.080mg/l) was found in T2 compared to (5.01± 0.056mg/l)  the units of T1. Moreover, significantly higher pH was observed in T2. Turbidity (NTU) and floc volume (ML/L) were significantly higher in T1 (60.60± 2.51 and 19.73± 0.726, respectively) compared to (48.05± 1.90 and 17.13± 0.41, respectively) the light- limited group. Furthermore, significantly higher survival rate was observed in T2 when compared with T1 (97.20± 0.153 vs 94.97± 0.696%, respectively). Additionally, final shrimp biomass (Kg) and biomass increase percentage were significantly greater in T2 (74.02± 0.43 and 411.25± 3.10, respectively) compared to (71.53± 0.55 and 397.38± 3.10, respectively) T1. FCR and PER were significantly improved in the light- limited group (1.32± 0.007 and 1.98± 0.010), as compared with (1.37± 0.008 and 1.92± 0.011, respectively) T1. Furthermore, significantly higher flocs protein content (17.97± 0.40%) was found in T1 compared to (15.62± 0.32 %) T2. Additionally, significantly higher total zooplankton count (141560orgs/m3 ± 2163.82) was observed in T1 compared to (65350 orgs/m3 ± 240.90) T2. Under biofloc system, light limitation improved biomass, survival rate, feed utilization, and water quality, while biofloc composition and zooplankton abundance were negatively affected.      
Keywords
Light limitation; Biofloc; Litopenaeus vannamei; Growth performance; Zooplankton assessment
Statistics
Article View: 218
PDF Download: 404
Home | Glossary | News | Aims and Scope | Sitemap
Top Top

Journal Management System. Designed by NotionWave.