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Antioxidants
Special Issues
Antioxidant Properties in Novel Feed Ingredients for Fish
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Antioxidant Properties in Novel Feed Ingredients for Fish

A special issue of Antioxidants (ISSN 2076-3921).

Deadline for manuscript submissions: closed (20 May 2025) | Viewed by 6145

Special Issue Editor

Dr. Inês Guerreiro

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Guest Editor
CIIMAR—Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos s/n, 4450-208 Matosinhos, Portugal
Interests: marine and environmental research; aquafeeds; fish; intestine oxidative status
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

In the future, aquaculture will be the most reliable seafood source to meet the increasing protein requirements. However, concerns are rising regarding its environmental impact due to the reliance of aquaculture feeds on fishery ingredients. Alternative ingredients, such as insect meal, plant feedstuffs, processed animal proteins and single-cell microorganisms, are increasingly being used nowadays. In addition to advantages such as reducing fishery-derived ingredient usage, high availability and affordable prices, alternative ingredients also present antioxidant properties. Those properties may be related with the fatty acid composition, amino acid composition, bioactive components or other components such as the chitin and chitosan in insect meals. Fish oxidative stress is thereby reduced by an increased antioxidant potential or decreased oxidative damage (lipid and protein oxidation). An improved oxidative status will allow for increasing fish welfare even when produced intensively, leading to a more sustainable production pattern.

This Special Issue welcomes contributions on these topics as literature reviews, original research manuscripts or short communications. The topics of interest include manuscripts on the use of alternative feed ingredients, such as insect meal, medicinal plants or any other ingredient which potentially presents antioxidant properties in fish.

Dr. Inês Guerreiro
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Antioxidants is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2900 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • aquafeeds
  • fish
  • oxidative status
  • aquaculture
  • antioxidant
  • insect meal

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Published Papers (3 papers)

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Research

15 pages, 324 KiB  
Article
Effect of Blood Orange (Citrus sinensis L. Osbeck) Peel Waste as a Feed Additive on the Growth Performance, Digestive Enzyme Activity, Antioxidant Capacity, and Immune Response in Juvenile Black Rockfish (Sebastes schlegelii)
by Tae Hoon Lee, Ki-Tae Kim, Hwa Yong Oh, Seo Young Park, Gyu Jin Lee, Hyun-Soo Kim and Hee Sung Kim
Antioxidants 2024, 13(12), 1452; https://doi.org/10.3390/antiox13121452 - 26 Nov 2024
Viewed by 1341
Abstract
This study evaluated bioactive compounds in blood orange (Citrus sinensis (L.) Osbeck) peel (BOP) as dietary additives. An 8-week feeding trial was conducted to investigate the effects of dietary supplementation on the growth performance, body composition, digestive enzyme activity, antioxidant capacity, and [...] Read more.
This study evaluated bioactive compounds in blood orange (Citrus sinensis (L.) Osbeck) peel (BOP) as dietary additives. An 8-week feeding trial was conducted to investigate the effects of dietary supplementation on the growth performance, body composition, digestive enzyme activity, antioxidant capacity, and immune response of juvenile black rockfish. A total of 1260 juvenile rockfish (1.4 ± 0.01 g) were randomly distributed into seven treatment groups, each with 50 fish per circular tank. The groups were fed seven different diets containing graded levels of 0 (control, BOP0), 1 (BOP1), 2 (BOP2), 3 (BOP3), 5 (BOP5), 7 (BOP7), and 10 (BOP10) g kg−1, respectively. The BOP10 diet significantly enhanced the final weight, weight gain, specific growth rate, protein efficiency ratio, and protein retention in fish. The BOP treatments notably affected the fishes’ whole-body crude protein and lipid contents. Plasma total cholesterol levels of fish fed the BOP0 and BOP1 diets were significantly higher than those fed the BOP7 and BOP10 diets. The activities of trypsin and lipase were significantly affected by dietary BOP levels. The antioxidant enzyme activity in the plasma of fish fed the BOP10 diet was significantly higher than those fed the BOP0 diet. The lysozyme activity and levels of immunoglobulin M and G in fish fed the BOP0 diet were significantly lower than those in fish fed the BOP10 diet. In conclusion, dietary supplementation of BOP at 10 g kg−1 improved the growth performance and overall health of juvenile black rockfish. Full article
(This article belongs to the Special Issue Antioxidant Properties in Novel Feed Ingredients for Fish)
24 pages, 6779 KiB  
Article
Evaluating Inclusion of Commercial Pistachio By-Product as a Functional Ingredient in Rainbow Trout Fishmeal and Plant Meal-Based Diets
by Mosope F. Abanikannda, Mark B. Shiflett, Ana Rita C. Morais, Jeoungwhui Hong, Wendy M. Sealey and Jacob W. Bledsoe
Antioxidants 2024, 13(11), 1280; https://doi.org/10.3390/antiox13111280 - 23 Oct 2024
Cited by 1 | Viewed by 958
Abstract
To meet the growing demand for sustainable aquaculture, plant proteins are being explored as alternative sources in fish diets. However, some plant proteins can have adverse health effects on fish, prompting research into functional feed ingredients to mitigate these issues. This study investigated [...] Read more.
To meet the growing demand for sustainable aquaculture, plant proteins are being explored as alternative sources in fish diets. However, some plant proteins can have adverse health effects on fish, prompting research into functional feed ingredients to mitigate these issues. This study investigated pistachio shell powder (PSP), rich in antioxidants, as a functional feed ingredient for rainbow trout (Oncorhynchus mykiss). The effects of PSP inclusion (0%, 0.5%, 1%, 2%) on growth performance, intestinal health, and gut microbiota were assessed in fish fed either a fishmeal (FM) or plant meal (PM) diet over a 12-week feeding period. The results indicated that PSP inclusion at 1% significantly (p < 0.05) improved weight gain and growth performance in FM treatments, with no impact on growth in PM treatments. No significant differences were observed in other growth parameters, intestinal morphology, or oxidative stress markers, although a trend toward the downregulation of inflammatory genes was noted in PM treatments at 2% PSP inclusion. PSP inclusion did not significantly alter gut microbiota alpha diversity but affected beta diversity at the 0.5% level in the FM treatments (p < 0.05). Differential abundance analysis of gut microbiota revealed taxa-specific responses to PSP, particularly the genus Candidatus arthromitus, increasing in relative abundance with PSP inclusion in both the FM- and PM-based treatments. Overall, PSP inclusion up to 2% did not have significant adverse effects on the growth, intestinal health, or antioxidant status of rainbow trout. Full article
(This article belongs to the Special Issue Antioxidant Properties in Novel Feed Ingredients for Fish)
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21 pages, 51684 KiB  
Article
Mitigating Dietary Microplastic Accumulation and Oxidative Stress Response in European Seabass (Dicentrarchus labrax) Juveniles Using a Natural Microencapsulated Antioxidant
by Matteo Zarantoniello, Nico Cattaneo, Federico Conti, Margherita Carrino, Gloriana Cardinaletti, İdris Şener and Ike Olivotto
Antioxidants 2024, 13(7), 812; https://doi.org/10.3390/antiox13070812 - 5 Jul 2024
Cited by 6 | Viewed by 3030
Abstract
Aquafeed’s contamination by microplastics can pose a risk to fish health and quality since they can be absorbed by the gastrointestinal tract and translocate to different tissues. The liver acts as a retaining organ with the consequent triggering of oxidative stress response. The [...] Read more.
Aquafeed’s contamination by microplastics can pose a risk to fish health and quality since they can be absorbed by the gastrointestinal tract and translocate to different tissues. The liver acts as a retaining organ with the consequent triggering of oxidative stress response. The present study aimed to combine the use of natural astaxanthin with natural-based microcapsules to counteract these negative side effects. European seabass juveniles were fed diets containing commercially available fluorescent microplastic microbeads (1–5 μm; 50 mg/kg feed) alone or combined with microencapsulated astaxanthin (AX) (7 g/kg feed; tested for half or whole feeding trial—30 or 60 days, respectively). Fish from the different dietary treatments did not evidence variations in survival and growth performance and did not show pathological alterations at the intestinal level. However, the microplastics were absorbed at the intestinal level with a consequent translocation to the liver, leading, when provided solely, to sod1, sod2, and cat upregulation. Interestingly, the dietary implementation of microencapsulated AX led to a mitigation of oxidative stress. In addition, the microcapsules, due to their composition, promoted microplastic coagulation in the fish gut, limiting their absorption and accumulation in all the tissues analyzed. These results were supported by in vitro tests, which demonstrated that the microcapsules promoted microplastic coagula formation too large to be absorbed at the intestinal level and by the fact that the coagulated microplastics were released through the fish feces. Full article
(This article belongs to the Special Issue Antioxidant Properties in Novel Feed Ingredients for Fish)
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