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Animals
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Second Edition of Nutritional Management to Promote Responsible Aquaculture
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Second Edition of Nutritional Management to Promote Responsible Aquaculture

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

Deadline for manuscript submissions: closed (31 March 2025) | Viewed by 1995

Special Issue Editor

Prof. Dr. Seunghyung Lee

E-Mail Website
Guest Editor
Major of Aquaculture and Applied Life Sciences, Division of Fisheries Life Sciences, Pukyong National University, Busan 48513, Republic of Korea
Interests: aquaculture; fish nutrition; stress physiology; nutritional modeling; fishmeal replacement; feed additives
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Over several decades, aquaculture has emerged as a key industry, bridging the gap between fish demand and supply. However, due to the global population increase and concerns regarding feed sustainability, species health management, and climate change, the sustainability of aquaculture is being threatened. Nutritional interventions and dietary optimization have proven to be effective in addressing these concerns, enhancing production efficiency, and improving animal welfare.

This Special Issue invites submissions that explore how innovative nutritional strategies can address key challenges in aquaculture. We are particularly interested in research on new feed formulations, alternative ingredients, and targeted nutritional management practices. Studies examining the responses of aquaculture species to various dietary interventions are also highly encouraged.

We welcome both original research and comprehensive reviews that provide insights into these areas. Your contributions will advance the understanding of how effective nutritional management can foster a more resilient and sustainable aquaculture industry in a rapidly changing world.

Prof. Dr. Seunghyung Lee
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. 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

  • aquaculture
  • nutrition
  • feed
  • sustainability
  • fish culture

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Related Special Issue

Published Papers (2 papers)

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Research

30 pages, 2381 KiB  
Article
Effects of Dietary Gamma-Aminobutyric Acid (GABA) Inclusion on Acute Temperature Stress Responses in Juvenile Olive Flounder (Paralichthys olivaceus)
by Abayomi Oladimeji Ogun, Haham Kim, Sooa Yoon, Suhyun Lee, Hyuncheol Jeon, Deni Aulia, Junhyeok Hur and Seunghyung Lee
Animals 2025, 15(6), 809; https://doi.org/10.3390/ani15060809 - 12 Mar 2025
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Abstract
This study investigated the potential of dietary gamma-aminobutyric acid (GABA) inclusion to mitigate acute temperature stress impacting the physiological resilience of juvenile olive flounder (Paralichthys olivaceus). A total of 360 juvenile fish, with an average initial weight of 12.97 ± 0.1 [...] Read more.
This study investigated the potential of dietary gamma-aminobutyric acid (GABA) inclusion to mitigate acute temperature stress impacting the physiological resilience of juvenile olive flounder (Paralichthys olivaceus). A total of 360 juvenile fish, with an average initial weight of 12.97 ± 0.1 g (mean ± SEM), were randomly assigned in triplicate to 18 tanks (20 fish per tank) and reared at 19.5 °C for 8 weeks, with bi-monthly collection of growth performance data. The fish were fed one of six experimental diets: control (GABA74), 174 ppm of GABA (GABA174), 275 ppm of GABA (GABA275), 396 ppm of GABA (GABA396), 476 ppm of GABA (GABA476), and 516 ppm of GABA (GABA516). At the end of the trial, one group of fish was subjected to lethal temperature stress (31 °C) for 48 h, while another was exposed to acute temperature stress (29 °C) for 6 h. Growth performance remained relatively stable across all inclusion levels (p > 0.05), with the final body weight (FBW) ranging from 48.2 ± 0.3 g (GABA174) to 50.3 ± 0.6 g (GABA516) and the feed conversion ratio (FCR) varying between 2.06 ± 0.07 (GABA396) and 2.35 ± 0.07 (control). There were no significant differences in average whole-body composition across all dietary treatments, with moisture content ranging from 74.8 to 75.0%, crude protein from 17.8 to 18.2%, crude lipid from 2.89 to 3.15%, and crude ash from 3.62 to 3.80%. Similarly, there were no significant differences in cumulative survival rates during lethal temperature exposure between the GABA-supplemented groups and the control group, with an average of 28.5 ± 4.6%. Additionally, GABA inclusion did not significantly alter plasma-free amino acid profiles, antioxidant enzyme activities, or immune functions (p > 0.05). However, temperature significantly reduced the levels of superoxide dismutase (SOD) from 3.34 ± 0.17 to 2.29 ± 0.36 µg/mL and increased the levels of glutamate oxaloacetate transaminase (GOT) from 17.1 ± 0.8 to 46.3 ± 6.2 U/L, glutamate pyruvate transaminase (GPT) from 14.4 ± 0.6 to 30.2 ± 2.1 U/L, glucose (GLU) from 13.3 ± 0.5 to 68.7 ± 7.7 mg/dL, total protein (TP) from 2.94 ± 0.00 to 3.21 ± 0.1 g/dL, and cortisol from 5001 ± 147 to 6395 ± 194 ng/mL. Furthermore, no significant changes were observed in the expression of key stress-related genes, including heat shock proteins (hsp60, hsp70, and hsp90) and the warm water acclimation-related gene wap65. This study establishes the safety of GABA as a dietary inclusion for olive flounder and highlights its potential to enhance stress resilience in aquaculture. However, the effectiveness of GABA-based interventions could depend on critical factors such as dosage, stress duration, and species-specific responses. Our findings highlight the need for further research to optimize GABA inclusion strategies, particularly with consideration for long-term physiological impacts. Full article
(This article belongs to the Special Issue Second Edition of Nutritional Management to Promote Responsible Aquaculture)
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13 pages, 1645 KiB  
Article
Effect of Feeding Frequency on the Growth, Body Composition, and Intestinal Health of Hybrid Grouper (Epinephelus fuscoguttatus♀ × E. lanceolatu♂) Fed a High-Fat Diet
by Weibin Huang, Shipei Yang, Wenshan Cai, Wanting Huang, Yansheng Liu, Shuaipeng Li, Menglong Zhou, Beiping Tan and Xiaohui Dong
Animals 2025, 15(3), 346; https://doi.org/10.3390/ani15030346 - 25 Jan 2025
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Abstract
This experiment was to investigate the effects of feeding frequency on the growth performance, body composition, and intestinal health of hybrid grouper (Epinephelus fuscoguttatus♀ × E. lanceolatu ♂). Fifty-six days of feeding with four different feeding frequencies (1 time/day, 2 times/day, [...] Read more.
This experiment was to investigate the effects of feeding frequency on the growth performance, body composition, and intestinal health of hybrid grouper (Epinephelus fuscoguttatus♀ × E. lanceolatu ♂). Fifty-six days of feeding with four different feeding frequencies (1 time/day, 2 times/day, 3 times/day, and 4 times/day) were conducted on groupers with an initial body weight of 11.51 ± 0.02 g. The results show the following: (1) Weight gain rate (WGR) and specific growth rate (SGR) of the groupers in the 1 time/day group were significantly lower than in other groups (p < 0.05). (2) Superoxide dismutase (SOD) had the lowest value in the 1 time/day group, significantly lower than the 2 times/day and 4 times/day groups, catalase showed an upward trend, and the 4 times/day group was significantly greater than the other groups (p < 0.05). The total antioxidant capacity (T-AOC) and glutathione peroxidase (GPX) activities in the 1 time/day group were significantly lower than in the other groups (p < 0.05). (3) The increase in feeding frequency led to a significant increase in the expression levels of cat and il-6 (p < 0.05). In summary, appropriate feeding frequency can promote growth and enhance the antioxidant capacity of the fish’s gut. We recommend a best feeding frequency of 2 times/day. Full article
(This article belongs to the Special Issue Second Edition of Nutritional Management to Promote Responsible Aquaculture)
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