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Animals
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New Nutritional Strategies to Control Disease of Aquaculture
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New Nutritional Strategies to Control Disease of Aquaculture

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

Deadline for manuscript submissions: closed (30 September 2023) | Viewed by 4612

Special Issue Editors

Dr. Maria José Tavares Ranzani-Paiva

E-Mail Website
Guest Editor
Fisheries Institute/APTA/SAA, São Paulo, Brazil
Interests: aquaculture; fish health; fish hematology; fish pathology; fish parasitology; fish physiology; aquatic organisms health; probiotics
Dr. Leonardo Tachibana

E-Mail Website
Guest Editor
Fisheries Institute/APTA/SAA, São Paulo, Brazil
Interests: fish health; fish pathology; vaccinology; probiotics; fish microbiology; fish immunology

Special Issue Information

Dear Colleagues,

The rapid growth of the world’s aquaculture has been stimulated by a wide variety of innovations, including the use of highly efficient feed formulations and the optimization of cultivation systems. Efforts to intensify aquaculture led to increased stress, high stocking densities, and poor fish health. Traditionally, the use of antibiotics in aquaculture has been an efficient strategy to mitigate stressful conditions and disease outbreaks or improve productivity. However, the prophylactic use of antibiotics has been widely criticized and banned in many countries. For this reason, aquaculture science is currently evaluating possible alternatives, with new feed and production strategies. One of the potential substitutes of antibiotics in aquaculture is the use of functional additives supplemented in aquaculture feeds. Additives are defined as non-nutritive ingredients which are supplemented in feeds to influence the physicochemical properties or to improve the overall performance of the cultured organisms and the quality of resulting products. These additives are medicinal plants, essential oils, probiotics, prebiotics, symbiotics, organic acids, etc. These additives can act in the gastrointestinal mechanism of animals or even in the immune system, strengthening a better response to a pathogenic agent. Several studies have shown that the effort to improve the quality of life of animals has been compensated with a return of greater production and quality of food offered to the population.

Dr. Maria José Tavares Ranzani-Paiva
Dr. Leonardo Tachibana
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

  • aquaculture
  • fish health
  • growth promoters
  • functional additives
  • nutrition

Published Papers (2 papers)

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Research

12 pages, 813 KiB  
Article
Growth Performance and Disease Resistance against Vibrio parahaemolyticus of Whiteleg Shrimp (Litopenaeus vannamei) Fed Essential Oil Blend (Phyto AquaBiotic)
by Tran Thi Tuyet Hoa, Mahougnon Siméon Fagnon, Dang Thuy Mai Thy, Thibaut Chabrillat, Nguyen Bao Trung and Sylvain Kerros
Animals 2023, 13(21), 3320; https://doi.org/10.3390/ani13213320 - 25 Oct 2023
Viewed by 1565
Abstract
Acute Hepatopancreatic Necrosis Disease (AHPND) is a serious and emerging disease caused by a group of strains of Vibrio parahaemolyticus and affects farmed shrimp, particularly whiteleg shrimps (Liptopenaeus vannamei). The objective of this study is to assess the effect of dietary [...] Read more.
Acute Hepatopancreatic Necrosis Disease (AHPND) is a serious and emerging disease caused by a group of strains of Vibrio parahaemolyticus and affects farmed shrimp, particularly whiteleg shrimps (Liptopenaeus vannamei). The objective of this study is to assess the effect of dietary supplementation with two dosages of an essential oil mixture (Phyto AquaBiotic, abbreviated as PAB) on growth performance and mortality reduction after challenge against V. parahaemolyticus. PAB was mixed with basal diets at rates of 0, 1 and 2 g/kg and fed for 42 days. Each tank was stocked with 100 individuals with experimentation performed in triplicate. The results showed an improvement in growth performance in a dose-dependent manner, specifically regarding daily weight gain, specific growth rate and total biomass, which were significantly improved compared to control (p < 0.05). Further, PAB significantly reduced mortalities when challenged against Vibrio parahaemolyticus (p < 0.05) and decreased Vibrio spp. count in the hepatopancreas of infected shrimp. Overall, PAB was efficient in reducing mortalities in cases of disease outbreaks at a rate of 2 g/kg. Full article
(This article belongs to the Special Issue New Nutritional Strategies to Control Disease of Aquaculture)
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17 pages, 2139 KiB  
Article
Antioxidant, Immunostimulant, and Growth-Promoting Effects of Dietary Annona squamosa Leaf Extract on Nile Tilapia, Oreochromis niloticus, and Its Tolerance to Thermal Stress and Aeromonas sobria Infection
by Salem Hamad Almarri, Alshimaa A. Khalil, Abdallah Tageldein Mansour and Walaa El-Houseiny
Animals 2023, 13(4), 746; https://doi.org/10.3390/ani13040746 - 19 Feb 2023
Cited by 15 | Viewed by 2510
Abstract
Plant extracts are a phytochemically-rich alternative to antibiotic and synthetic feed additives, with high systemic bioactivity in animals. The present study aimed to evaluate the effect of a hydroalcoholic extract of custard apple (Annona squamosa) leaf (ASLE) on the growth, hematobiochemical [...] Read more.
Plant extracts are a phytochemically-rich alternative to antibiotic and synthetic feed additives, with high systemic bioactivity in animals. The present study aimed to evaluate the effect of a hydroalcoholic extract of custard apple (Annona squamosa) leaf (ASLE) on the growth, hematobiochemical parameters, digestive enzyme activities, redox status, nonspecific immune response, and cold and bacterial infection tolerance in Nile tilapia (Oreochromis niloticus). A total of 300 Nile tilapia fingerlings (11.87 ± 0.48 g) were fed ASLE-supplemented diets at increasing levels of 0, 5, 10, 15, and 20 g/kg for 60 days. At the end of the feeding period, the fish were experimentally challenged with cold water stress or Aeromonas sobria, and mortalities were recorded for 10 days. The results revealed that the growth performance and feed conversion ratio were significantly improved with an increasing level of ASLE supplementation. The hematologic profile and hepato-renal functions were retained within a healthy range in the various groups supplemented with an ASLE diet. Antioxidant status was significantly improved in the serum of fish fed ASLE-supplemented diets, in terms of superoxide dismutase (SOD), catalase (CAT) activities, reduced glutathione, and total antioxidant capacity. Meanwhile, the myeloperoxidase (MPO) and malondialdehyde (MDA) levels decreased significantly. Similarly, there was a noticeable improvement in the hepatic CAT and SOD activities and a reduction of hepatic MDA. Marked improvements in lysozyme activity, nitric oxide production, complement3 level, and phagocytic activity were recorded in groups fed ASLE-supplemented diets, which peaked with the 20 g ASLE/kg diet. Moreover, the serum glucose and cortisol levels significantly declined in groups fed ASLE at levels of 15–20 g/kg compared to the other groups. Supplementation with ASLE increased the activities of protease, lipase, and α-amylase. ASLE supplementation at a concentration of 10–20 g/kg diet enhanced the resistance of Nile tilapia to A. sobria infection. According to this study, ASLE supplementation enhanced the antioxidant balance, non-specific immune response, physiological status, resistance against infection, and growth performance of Nile tilapia at supplementation levels of 10–20 g/kg diet. Full article
(This article belongs to the Special Issue New Nutritional Strategies to Control Disease of Aquaculture)
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