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Optimizing Farm-Raised Fish Production: Nutritional Requirements, Precision Feed Formulations, Sustainable...
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Optimizing Farm-Raised Fish Production: Nutritional Requirements, Precision Feed Formulations, Sustainable Feeding Strategies, and Health and Welfare

A special issue of Animals (ISSN 2076-2615). This special issue belongs to the section "Aquatic Animals".

Deadline for manuscript submissions: 28 February 2025 | Viewed by 941

Special Issue Editors

Prof. Dr. Simon Davies

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Guest Editor
1. School of Natural Sciences, Ryan Institute, University of Galway, Galway, Ireland
2. Emeritus Professor of Aquaculture Nutrition and Biosciences, Harper Adams University, Newport, UK
Interests: fish nutritional requirements; feed formulation; functional feed additives; sustainable ingredients; immuno-nutrition; gene expression; gut integrity; microbiome; disease resistance; health and welfare
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Ehab El-Haroun

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Guest Editor
Fish Nutrition Research Laboratory, Animal Production Department, Faculty of Agriculture, Cairo University, Cairo, Egypt
Interests: fish nutrition; prebiotic; probiotics and synbiotics; feed additives
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

This Special Issue will cover major investigations concerning the advancement in our knowledge of more precise fish nutrition requirements and feed formulations for aquaculture applications. There is a need to update and more accurately redefine the fundamental needs for dietary nutrients such as protein, essential amino acids, vitamins, and key minerals for the growth and health of fish under a variety of production scenarios. The evaluation of new protein and energy ingredients in feeds is considered. The integration of nutrition into other important systems such as immunocompetence and the role in promoting optimized immune function to fight infection and invasive pathogens can be examined. This may include studies that assess how different diets can mitigate the risk of disease through achieving a superior health status such as improved gut integrity. With increased environmental stressors such as climate change and elevated temperature, aquaculture is facing new risks and challenges. These will affect metabolism and physiological processes that can compromise welfare. There are emerging opportunities to explore a new generation of dietary ingredients and supplements as feed additives with functional properties. These include a myriad of bioactive natural agents. Linking nutrition and feeds towards the welfare of farmed fish is central to this theme.

Prof. Dr. Simon Davies
Prof. Dr. Ehab El-Haroun
Guest Editors

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. Animals is an international peer-reviewed open access semimonthly 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 2400 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

  • fish nutritional requirements
  • feed formulation
  • functional feed additives
  • immuno-nutrition
  • gene expression
  • gut integrity
  • microbiome
  • disease resistance
  • welfare

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Published Papers (2 papers)

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Research

12 pages, 290 KiB  
Article
Dietary Protein Affects the Growth Response and Tissue Composition of Juvenile Slipper Lobster (Thenus australiensis)
by Andrea Williamson, Chris G. Carter, M. Basseer Codabaccus, Quinn P. Fitzgibbon and Gregory G. Smith
Animals 2024, 14(23), 3363; https://doi.org/10.3390/ani14233363 - 22 Nov 2024
Abstract
The effect of different dietary protein levels on apparent feed intake, apparent digestibility, body composition, nutrient retention, and growth efficiency of juvenile slipper lobster (Thenus australiensis) were evaluated for 74 days. Three isoenergetic and isolipidic feeds were formulated with crude protein [...] Read more.
The effect of different dietary protein levels on apparent feed intake, apparent digestibility, body composition, nutrient retention, and growth efficiency of juvenile slipper lobster (Thenus australiensis) were evaluated for 74 days. Three isoenergetic and isolipidic feeds were formulated with crude protein levels of 445, 490, and 551 g kg−1 DM, designated as P45, P50, and P55, respectively. Lobsters were fed one of these feeds in quadruplicate tanks, with eight lobsters (mean initial wet weight 6.1 ± 0.3 g) per tank in a recirculating seawater system at 27 °C. Increasing dietary protein levels significantly increased apparent feed intake, final dry weight, and daily weight gain. Dietary protein affected whole-body protein, lipid, and energy content. Lobsters fed P55 had significantly higher lipid and energy content than those fed P50 and P45. Protein content was significantly higher in lobsters fed P55 than P50, while P45 was not significantly different from either P50 or P55. Slipper lobsters grew best on a feed containing 550 g kg−1 crude protein (equivalent to 518 g kg−1 digestible protein), providing initial insights into their protein dietary requirement. This study established a foundation for developing standardized feeds, with further research needed to optimize growth performance and nutrient utilization. Full article
(This article belongs to the Special Issue Optimizing Farm-Raised Fish Production: Nutritional Requirements, Precision Feed Formulations, Sustainable Feeding Strategies, and Health and Welfare)
18 pages, 5532 KiB  
Article
Antibacterial and Antibiofilm Activity of Essential Oils Against Aeromonas spp. Isolated from Rainbow Trout
by Patrícia Hudecová, Jana Koščová, Vanda Hajdučková, Ján Király and Peter Horňak
Animals 2024, 14(22), 3202; https://doi.org/10.3390/ani14223202 - 8 Nov 2024
Viewed by 390
Abstract
Aeromonas spp. is a major pathogen in aquaculture with a great negative economic impact. Essential oils (EOs) are compounds of the secondary metabolism of plants known for their antibacterial and antibiofilm activities. In this study, in vitro antibacterial activity of eight EOs: tea [...] Read more.
Aeromonas spp. is a major pathogen in aquaculture with a great negative economic impact. Essential oils (EOs) are compounds of the secondary metabolism of plants known for their antibacterial and antibiofilm activities. In this study, in vitro antibacterial activity of eight EOs: tea tree (extracted from Melaleuca alternifolia), eucalyptus (extracted from Eucalyptus globulus LABILL.), knee timber (extracted from Pini mungo L.), peppermint (extracted from Mentha piperita L.), oregano (extracted from Origanum vulgare L.), rosemary (extracted from Rosmarinus officinalis L.), thyme (extracted from Thymus vulgaris L.) and pine EO (extracted from Pinus silvestris L.), obtained from Calendula a.s., was evaluated. Their antibacterial activity was demonstrated against Aeromonas spp. isolates. Oregano and thyme EOs showed the strongest activity against all tested isolates at low concentrations, followed by tea tree and peppermint EOs. The MIC value ranged from 0.06 µL/mL to 1.0 µL/mL. The tested EOs showed a significant antibiofilm activity against biofilm-forming isolates with MBIC50 ranging from 0.015 µL/mL to 0.25 µL/mL. All tested isolates were obtained from rainbow trout free of clinical signs of infection. Twelve isolates of Aeromonas salmonicida subsp. masoucida, four Aeromonas hydrophila, and four isolates of Aeromonas veronii were identified. The results of the in vitro study showed a significant effect of EOs against Aeromonas spp., which confirmed their potential for use in aquaculture as a prevention against bacterial diseases and a way of reducing the use of antibiotics. Full article
(This article belongs to the Special Issue Optimizing Farm-Raised Fish Production: Nutritional Requirements, Precision Feed Formulations, Sustainable Feeding Strategies, and Health and Welfare)
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