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Fishes
Special Issues
Fish Nutrition, Metabolism and Physiology
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Fish Nutrition, Metabolism and Physiology

A special issue of Fishes (ISSN 2410-3888).

Deadline for manuscript submissions: closed (29 February 2024) | Viewed by 7078

Special Issue Editors

Dr. Gisele Cristina Favero

E-Mail Website
Guest Editor
Laboratório de Aquacultura, Departamento de Zootecnia, Universidade Federal de Minas Gerais, Belo Horizonte 30161-970, MG, Brazil
Interests: fish physiology; fish nutrition; fish stress; fish production
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Ronald Kennedy Luz

E-Mail Website
Guest Editor
Departamento de Zootecnia, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil
Interests: recirculating aquaculture system; aquaponic systems; production management; fish behavior; larviculture; fish reproduction
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The commercial production of fish for human food has been increasing considerably at a global scale due to the high nutritional quality of the meat, as fish are healthier food sources when compared to other animals. The nutrition and food management of fish are very important tools to seek an increase in the intensification of production systems, in addition to achieving better fish growth responses and an increase in fish quality. However, inadequate nutrition and food management can have serious consequences on water quality parameters, in addition to leading to stressful situations for the animals, with direct implications on their physiology and metabolism. Thus, this Special Issue invites researchers to submit studies that address topics related to the nutrition, metabolism and physiology of fish, with the objective of enhancing the  knowledge about the productive chain of these animals in a global context.

Prof. Dr. Gisele Cristina Favero
Prof. Dr. Ronald Kennedy Luz
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. Fishes 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 2600 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

  • fasting
  • feed restriction
  • fish production
  • fish stress
  • food management
  • growth performance
  • immunostimulants
  • nutritional metabolism
  • nutritional physiology

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Published Papers (3 papers)

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Research

14 pages, 1028 KiB  
Article
Zootechnical Parameters and Enzyme Activity in the Species Brycon moorei (Steindachner 1878)
by Carlos David-Ruales, Débora Machado Fracalossi and Felipe Collazos-Lasso
Fishes 2023, 8(12), 592; https://doi.org/10.3390/fishes8120592 - 30 Nov 2023
Viewed by 1932
Abstract
Brycon moorei is an opportunistic omnivorous species. It is not known what its nutritional requirements are at any stage of its development; this study determined the influence of diet on the zootechnical parameters and enzyme activity of these fish. In a completely randomized [...] Read more.
Brycon moorei is an opportunistic omnivorous species. It is not known what its nutritional requirements are at any stage of its development; this study determined the influence of diet on the zootechnical parameters and enzyme activity of these fish. In a completely randomized quintuplicate design, an ad libitum dietary protocol was applied, which included Prochilodus magdalenae larvae, Artemia salina and balanced feed with increasing inclusion levels (35 to 55% crude protein (CP)). Larvae 22 h post-hatching (HPH), with an average initial weight and length of 3.07 ± 0.69 mg and 6.069 ± 0.22 mm, respectively, were seeded at a density of 17 larvae L−1 in tanks with an effective volume of 60 L. The main zootechnical parameters, water quality and enzyme activity were analyzed with respect to the experimental diets. Significantly, the best diet was that of 45% CP when compared with the other CP levels used. Specific serum enzyme activity was found from hatching, with fluctuating values, the specific pepsin-like activity started at 111 HPH. B. moorei larvae can receive a dry diet from 124 HPH and their requirement corresponds to 48.5% CP. Full article
(This article belongs to the Special Issue Fish Nutrition, Metabolism and Physiology)
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18 pages, 1667 KiB  
Article
The Effect of Dietary Lipid Supplementation on the Serum Biochemistry, Antioxidant Responses, Initial Immunity, and mTOR Pathway of Juvenile Tilapia (Oreochromis niloticus)
by Yongqiang Liu, Enhao Huang, Yi Xie, Liuqing Meng, Dongsheng Liu, Ziqi Zhang, Jiang Zhou, Qin Zhang and Tong Tong
Fishes 2023, 8(11), 535; https://doi.org/10.3390/fishes8110535 - 26 Oct 2023
Cited by 9 | Viewed by 1851
Abstract
The objectives of this study were to investigate the effect of different dietary lipid levels on the serum biochemistry, antioxidant responses, initial immunity, and mTOR pathway of juvenile genetic improvement-farmed tilapia (GIFT, Oreochromis niloticus). Six groups of the juveniles (initial body weight [...] Read more.
The objectives of this study were to investigate the effect of different dietary lipid levels on the serum biochemistry, antioxidant responses, initial immunity, and mTOR pathway of juvenile genetic improvement-farmed tilapia (GIFT, Oreochromis niloticus). Six groups of the juveniles (initial body weight 20.66 ± 1.33 g) in triplicate were fed for 90 days using six iso-nitrogen diets with different lipid levels (0.35%, 3.35%, 6.35%, 9.35%, 12.35%, and 15.35%). The main results were as follows: Compared with the control group (0.35%), the diets with different lipid supplementation significantly improved (p < 0.05) the contents of total protein (TP), albumin (ALB), globulin (GLB), glucose (GLU), triglyceride (TG), total cholesterol (T-CHO), high-density lipoprotein (HDL), low-density lipoprotein (LDL), total antioxidant capacity (T-AOC), malondialdehyde (MDA), complement 3 (C3), and immunoglobulin M (IgM), the activities of superoxide dismutase (SOD), glutathione peroxidase (GSH-Px), catalase (CAT), lysozyme (LYZ), and alkaline phosphatase (ALP), the expression level of phosphatidylinositol-3-kinase (PI3K), Akt protein kinase B (Akt), and mammalian target of rapamycin (mTOR) genes in juvenile tilapia. However, diets with different lipid supplementation significantly reduced (p < 0.05) the expression level of tumor necrosis factor α (TNF-α), interleukin-1β (IL-1β), and interleukin-6 (IL-6) genes of juvenile tilapia. In conclusion, the with different lipid supplementation could significantly affect the serum biochemistry, antioxidant responses, initial immunity, and mTOR pathway of juvenile tilapia. Full article
(This article belongs to the Special Issue Fish Nutrition, Metabolism and Physiology)
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15 pages, 1114 KiB  
Article
The Effects of Dietary Fermented Soybean Meal Supplementation on the Growth, Antioxidation, Immunity, and mTOR Signaling Pathway of Juvenile Coho Salmon (Oncorhynchus kisutch)
by Qin Zhang, Qiuyue Yang, Mengjie Guo, Fanghui Li, Meilan Qin, Yi Xie, Jian Xu, Yongqiang Liu and Tong Tong
Fishes 2023, 8(9), 448; https://doi.org/10.3390/fishes8090448 - 5 Sep 2023
Cited by 7 | Viewed by 1750
Abstract
This experiment aims to investigate the effects of partial replacement of fish meal (FM) by soybean meal (SBM) and/or fermented soybean meal (FSBM) on the growth, serum biochemistry, digestion, antioxidation, immunity, and mTOR signaling pathway of juvenile coho salmon (Oncorhynchus kisutch). [...] Read more.
This experiment aims to investigate the effects of partial replacement of fish meal (FM) by soybean meal (SBM) and/or fermented soybean meal (FSBM) on the growth, serum biochemistry, digestion, antioxidation, immunity, and mTOR signaling pathway of juvenile coho salmon (Oncorhynchus kisutch). Four iso-nitrogen and iso-lipid diets were designed and fed to four groups of juvenile coho salmon (152.25 ± 2.96 g) in triplicate for 10 weeks. The four diets were the G0 diet (control group, containing 28% FM protein), the G1 diet (containing 10% SBM protein and 18% FM protein), the G2 diet (containing 5% SBM protein, 5% FSBM protein, and 18% FM protein), and the G3 diet (containing 10% FSBM protein and 18% FM protein). It was found that compared with the G0 diet (control group), the activities of catalase (CAT), superoxide dismutase (SOD), pepsin, trypsin, α-amylase, and lipase, and the expression levels of mammalian target of rapamycin (mtor), protein kinase B (akt), phosphatidylinositol 3-kinase (pi3k), plant ribosome S6K protein kinase (s6ks), and lysozyme (lyz) genes, of juvenile coho salmon fed the G3 diet increased significantly (p < 0.05), and the expression levels of tumor necrosis factor (tnf-α), interleukin-1β (il-1β), and interleukin-6 (il-6) genes of juvenile coho salmon fed the G3 diet decreased significantly (p < 0.05). However, there were no significant differences in growth, muscle composition, and serum biochemistry of juvenile coho salmon fed the G3 diet compared with the G0 diet (p > 0.05). In conclusion, replacing 10% FM protein with FSBM protein could improve the digestion, antioxidation, immunity, and mTOR signaling pathway of juvenile coho salmon. Full article
(This article belongs to the Special Issue Fish Nutrition, Metabolism and Physiology)
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