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Cited by 95Aquaculture Nutrition and GrowthAquaculture disease management and microbiotaAlgal biology and biofuel production

Evaluation of whole and lipid-extracted algae meals in the diets of juvenile red drum (Sciaenops ocellatus)

Patterson, Donovan, Gatlin, Delbert M.·2013·Aquaculture
DOI 10.1016/j.aquaculture.2013.08.033
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Abstract

As aquaculture continues to expand, protein sources have become more costly and less available. Simultaneously, lipid-extracted algae (LEA) meals, which areco-products of bio-diesel production are becoming increasingly available. By integrating LEA into aquaculture diets, feed prices could possibly be lowered and bio-diesel production would have an additional revenue stream. Three separate feeding trials of either 7 or 8week duration were conducted to evaluate four different algal meals as partial replacements for fishmeal and soy protein concentrate in diets for juvenile red drum (Sciaenops ocellatus) initially weighing 1.9, 5.2 and 13.0g/fish. In the first trial, whole algae meal and LEA derived from Navicula sp. replaced 5 or 10% of the crude protein (CP) in the reference diet based on equal contributions from fishmeal and soy protein concentrate. Weight gain, feed efficiency (FE), survival, condition indices including hepatosomatic index, intraperitoneal fat ratio and muscle ratio as well as whole-body proximate composition were not significantly (P>0.05) affected by substituting any of the algal products for fishmeal and soy protein concentrate in the reference diet. However, protein and energy retention values were significantly reduced in fish fed the diet with LEA meal included at 10% of dietary protein compared to fish fed the reference diet. Algal inclusion reduced the apparent digestibility coefficient (ADC) for CP by an average of 3%, while ADC for energy increased by an average of 8%. A second feeding trial evaluated incrementally higher levels of LEA derived from Chlorella sp., by replacing 5, 10, 20, and 25% of the CP in the reference diet. Weight gain, FE, and protein efficiency ratio (PER) were significantly reduced at substitution levels of 20 and 25% but there were no differences in condition indices or whole-body proximate composition. The third feeding trial evaluated smaller incremental levels of LEA derived from Nannochloropsis salina, replacing 5, 7.5, 10, and 15% of the CP in the reference diet. Weight gain, FE, survival, and PER as well as intraperitoneal fat ratio and whole-body lipid were significantly reduced in fish fed the diet with 15% substitution. Based on the results of these experiments, replacement of up to 10% of CP from fishmeal and soy protein concentrate with LEA was possible without causing significant reductions in fish performance. Overall, the whole algae product proved a more nutritious product than LEA meals when fed to juvenile red drum.

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Authors
Patterson, D., & Gatlin, D. M.
Affiliations
Texas A&M University System (US)
Corresponding author
Gatlin, Delbert M.
ORCID
Gatlin, Delbert M.
Venue
Aquaculture
Publisher
Elsevier BV
Published
2013-12
Volume
416-417
Pages
92-98
ISSN
0044-8486 (ISSN-L)
DOI
10.1016/j.aquaculture.2013.08.033
OpenAlex
W2074723872
Cited by
95
References
41
Citations by year
2026: 9 · 2025: 7 · 2024: 7 · 2023: 4 · 2022: 10 · 2021: 8 · 2020: 8 · 2019: 14 · 2018: 12 · 2017: 9 · 2016: 3 · 2015: 3 · 2014: 1
FWCI
3.56
Type
journal article
Language
en
Open access
closed
Licence
www.elsevier.com/tdm/userlicense/1.0/ (tdm)
Locations
Aquaculture (publishedVersion)
Funders
  • U.S. Department of Energy (DE-EE0003046)
  • Texas A&M AgriLife Research
Topics
  • Life Sciences › Agricultural and Biological Sciences › Aquatic Science › Aquaculture Nutrition and Growth
  • Life Sciences › Immunology and Microbiology › Immunology › Aquaculture disease management and microbiota
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Algal biology and biofuel production
Keywords
red drum, fish meal replacement, Navicula, Chlorella, Nannochloropsis salina, protein efficiency ratio, apparent digestibility coefficients, feed cost reduction, juvenile fish nutrition, hepatosomatic index

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