Aquaculture Nutrition最新文献

{"title":"Effects of Black Soldier Fly Larval (Hermetia illucens) Replacement Diet on Hybrid Grouper (Epinephelus lanceolatus ♂ × E. fuscoguttatus ♀) Through a Multipronged Nutrigenomic Analysis","authors":"Yan Chen,&nbsp;Bing Chen,&nbsp;Junru Hu,&nbsp;Junming Cao,&nbsp;Minyi Zhong,&nbsp;Hai Huang,&nbsp;Jiun-Yan Loh","doi":"10.1155/anu/5795871","DOIUrl":"10.1155/anu/5795871","url":null,"abstract":"<p>This study investigated the effects of replacing fishmeal (FM) protein with black soldier fly larvae (BSFL) in hybrid grouper (<i>Epinephelus lanceolatus</i> ♂ × <i>E. fuscoguttatus</i> ♀) by integrating growth performance, body composition, serum biochemistry, digestive enzyme activity, histopathology, and transcriptomic analysis. A total of 720 fish (average body weight [ABW]: 56.51 g ± 0.07) were randomly allotted to six isonitrogenous and isocaloric diets (0%, 10%, 20%, 30%, 40%, and 50% FM protein replaced by BSFL), with three replicate tanks per treatment and 40 fish per 500 L tank. After the 56-day feeding trial, survival remained above 95% in all groups (<i>p</i> &gt; 0.05). The highest final weight and growth indices were observed in the BSFL20 group, whereas quadratic regression based on body weight gain (BWG) and specific growth rate (SGR) indicated lower mathematical optima of ~8% BSFL replacement. Feed utilization was improved at 20%–30% BSFL inclusion (<i>p</i> &lt; 0.05), but higher inclusion levels reduced growth and feed efficiency. Muscle lipid content and fillet quality were not markedly impaired by moderate BSFL inclusion. Serum biochemical responses and tissue histology suggested that replacement levels above 20% increased physiological stress, with clear pathological changes in liver and stomach tissues at 40%–50% BSFL. Transcriptomic analysis revealed substantial changes in genes related to cell growth, apoptosis, amino acid metabolism, and lipid metabolism, with the strongest liver response observed in the BSFL30 group. Overall, the data support moderate BSFL inclusion as a feasible strategy for partially replacing FM in hybrid grouper, while indicating that excessive replacement compromises physiological stability.</p>","PeriodicalId":8225,"journal":{"name":"Aquaculture Nutrition","volume":"2026 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2026-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13370800/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148454413","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"RETRACTION: Effects of Dietary Waste Wet Dates (Phoenix dactylifera) on Growth, Feed Utilization, and Health Status of Nile Tilapia, Oreochromis niloticus, and Thin-Lip Gray Mullet, Liza ramada, in a Polyculture System","authors":"Aquaculture Nutrition","doi":"10.1155/anu/9805024","DOIUrl":"https://doi.org/10.1155/anu/9805024","url":null,"abstract":"<p>RETRACTION: M.M. Toutou, A. Elkelish, and A.A. Soliman, “Effects of Dietary Waste Wet Dates (<i>Phoenix dactylifera</i>) on Growth, Feed Utilization, and Health Status of Nile Tilapia, <i>Oreochromis niloticus</i>, and Thin-Lip Gray Mullet, <i>Liza ramada</i>, in a Polyculture System,” <i>Aquaculture Nutrition</i>, vol. 2025 (2025). https://doi.org/10.1155/anu/4684297.</p><p>The above article, published online on 17 December 2025 in Wiley Online Library (http://onlinelibrary.wiley.com), has been retracted by agreement between the Journal’s Editor-in-Chief, Antony J. Prabhu Philip; and John Wiley &amp; Sons Ltd.</p><p>The retraction has been agreed following an investigation undertaken by the publisher, which identified concerns related to the data presented in the manuscript. More specifically, the validity of several data points shown in Tables 4–7 was brought into question and the underlying raw data were requested from the authors.</p><p>The authors provided the raw data, which were assessed by the publisher and the journal’s editorial board. Following an investigation, it was found that the raw data underpinning several means were identical for all replicates.</p><p>As a result of the investigation, the data and conclusions of this article are considered unreliable. Therefore, the article must be retracted.</p><p>The authors were informed of this retraction but did not provide a response.</p>","PeriodicalId":8225,"journal":{"name":"Aquaculture Nutrition","volume":"2026 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2026-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/anu/9805024","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148467413","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"RETRACTION: Effects of Dietary Pectin and Lactobacillus salivarius ATCC 11741 on Growth Performance, Immunocompetence, Gut Microbiota, Antioxidant Capacity, and Disease Resistance in Narrow-Clawed Crayfish, Postantacus leptodactylus","authors":"Aquaculture Nutrition","doi":"10.1155/anu/9891417","DOIUrl":"10.1155/anu/9891417","url":null,"abstract":"<p>RETRACTION: S. D. S. Jastaniah, H. Hafsan, C.-J. Tseng, et al., “Effects of Dietary Pectin and <i>Lactobacillus salivarius</i> ATCC 11741 on Growth Performance, Immunocompetence, Gut Microbiota, Antioxidant Capacity, and Disease Resistance in Narrow-Clawed Crayfish, <i>Postantacus leptodactylus</i>,” <i>Aquaculture Nutrition</i> 2022, no. 1 (2022): 1–13, https://doi.org/10.1155/2022/1861761.</p><p>The above article, published online on 2 November 2022 in Wiley Online Library (wileyonlinelibrary.com), has been retracted by agreement between the Journal Editor-in-Chief, Antony J. Prabhu Philip; and John Wiley &amp; Sons Ltd.</p><p>The retraction has been agreed upon following an investigation into concerns initially raised by a third party over the authorship of the article [<span>1</span>]. Following an investigation into these concerns, inconsistencies have been identified around the contributions of individual authors and the accountability of this work. As a result, we no longer have confidence in the integrity of the article’s content, and it is therefore retracted.</p><p>The authors did not respond when they were informed of the decision to retract.</p>","PeriodicalId":8225,"journal":{"name":"Aquaculture Nutrition","volume":"2026 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2026-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13366492/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148444172","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of Dietary Vitamin A Concentration and Stress on Astaxanthin Utilization in Atlantic Salmon (Salmo salar)","authors":"Trine Ytrestøyl,&nbsp;Thea Morken,&nbsp;Tone-Kari Knutsdatter Østbye,&nbsp;Alexander Dikiy,&nbsp;Elena Shumilina,&nbsp;Marta Bou,&nbsp;Bjarne Hatlen,&nbsp;Gunvor Struksnæs,&nbsp;Anne Marie Langseter,&nbsp;Målfrid Bjerke,&nbsp;Julia Mullins,&nbsp;Aleksei Krasnov,&nbsp;Bente Ruyter","doi":"10.1155/anu/1961029","DOIUrl":"10.1155/anu/1961029","url":null,"abstract":"<p>Diets with 30 and 60 ppm astaxanthin in combination with vitamin A (VA) concentrations of 6500, 35,000, and 100,000 IU/kg were fed to Atlantic salmon post smolts in seawater for 17 weeks. Flesh color (SalmoFan 27.1–27.5), astaxanthin concentration (3 mg/kg), retention (4.8% and 8.9% at 30 and 60 mg astaxanthin/kg respectively), and digestibility (29% and 12% at 30 and 60 mg astaxanthin/kg, respectively) were lowest at the highest dietary VA concentration. Increasing VA concentration in the diet also reduced the astaxanthin concentrations in liver and plasma, but not in intestine. Hepatocytes and enterocytes were isolated from fish fed the six diets and incubated for 48 h with radiolabeled astaxanthin to study metabolic transformation of astaxanthin in vitro. Astaxanthin was metabolized to idoxanthin, β-carotene, retinol, and retinal in both cell types, but astaxanthin made up a larger proportion of total radioactivity in hepatocytes than in enterocytes. Hepatocytes from salmon fed high VA in the diet had the highest astaxanthin concentration (39% of the radioactivity), whereas the highest VA concentration (6% of the radioactivity) was found in hepatocytes from fish that received the lowest dietary VA concentration. Enterocytes from salmon fed the medium VA diet, had highest concentrations of astaxanthin (17%–26%), retinol (6.4%–7%) and the lowest concentration of idoxanthin (14%–31%). After the 17-week feeding trial, salmon fed four of the diets (30 and 60 ppm astaxanthin in combination with 6500 and 100,000 IU/kg VA) were exposed to repeated stress (crowding and low oxygen) for a period of 5 weeks. Stress reduced the astaxanthin concentrations in muscle with around 0.5 mg/kg, except in salmon fed the diet with high VA and 60 ppm astaxanthin, which maintained an astaxanthin concentration of 3.3 mg/kg. Changes in the part of the carotenoid NMR spectrum in salmon exposed to stress indicated that stress affected the conversion of astaxanthin in interaction with dietary VA and astaxanthin. The effects of diet VA and astaxanthin concentration in combination with stress on gene expression in intestine, liver, and muscle were measured, and minor effects on several immune, stress, and metabolic genes were found.</p>","PeriodicalId":8225,"journal":{"name":"Aquaculture Nutrition","volume":"2026 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2026-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13369587/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148454419","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dietary DHA-Enriched Phosphatidylcholine Enhances Muscle Health and Intestinal Barrier Function by Relieving Apoptosis and Oxidative Stress in Largemouth Bass (Micropterus salmoides)","authors":"Qiang Chen,&nbsp;Tianli Ren,&nbsp;Jinqi Xu,&nbsp;Yunping Tang,&nbsp;Runzhe Zhang,&nbsp;Jiteng Wang,&nbsp;Tao Han","doi":"10.1155/anu/3126231","DOIUrl":"10.1155/anu/3126231","url":null,"abstract":"<p>Phosphatidylcholine (PC) is critical for aquatic feed, but the physiological functions of marine-derived PC remain unclear. This study explored the regulatory role of Atlantic herring (<i>Clupea harengus</i>) egg-derived DHA-enriched PC (DHA-PC) in healthy farming of largemouth bass. An 8-week trial was conducted on juvenile largemouth bass (initial body weight: 4.31 ± 0.038 g) with 0% (control group), 3% and 6% DHA-PC supplementation. Results showed that DHA-PC enhanced serum immune indicators (alkline phosphatase (AKP) activity and albumin (ALB) content) and reduced alanine aminotransferase (ALT) activity, while improving antioxidant capacity (increased reduced glutathione (GSH) content, superoxide dismutase (SOD) activity, total antioxidant capacity (T-AOC) activity and decreased malondialdehyde (MDA) content) in multiple tissues. A total of 496 and 673 differentially expressed genes (DEGs) were identified in muscle transcriptomics between the CON group and the MDHAPC group, and between the CON group and the HDHAPC group, respectively, with enriched apoptosis-related mitogen-activated protein kinase/forkhead box O transcription factor (MAPK/FOXO) pathways. Quantitative real-time polymerase chain reaction (qRT-PCR) confirmed downregulated apoptosis genes (<i>nfat2</i>, <i>jund</i>, <i>ap1</i>, etc.) by DHA-PC. DHA-PC increased the activity of lipase and increased the mRNA expression of <i>lpl</i> and <i>atgl</i> in the intestine. In addition, DHA-PC optimized intestinal structure, upregulated tight junction/antioxidant genes (<i>zo-1</i>, <i>claudin-1</i>, <i>cat</i> and <i>nrf2</i>), downregulated inflammatory genes (<i>il-1β</i> and <i>tlr2</i>), and modulated intestinal flora (increased beneficial bacteria and reduced pathogens). In conclusion, dietary DHA-PC improves muscle and intestinal health via the “intestinal-muscle axis”, providing a theoretical basis for its application as a novel nutritional strategy in aquaculture. Moreover, comparative analysis revealed that 3% DHA-PC supplementation was sufficient to achieve significant antioxidant effects, whereas 6% DHA-PC was more effective in optimizing intestinal microbial community structure.</p>","PeriodicalId":8225,"journal":{"name":"Aquaculture Nutrition","volume":"2026 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2026-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13347174/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148418228","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of Three Dried Citrus Peels as Feed Additives on Growth Performance and Intestinal Microbiota of Oreochromis niloticus","authors":"Yang Yang,&nbsp;Zhanqian Wang,&nbsp;Yifan Hao,&nbsp;Chong Yang,&nbsp;Sisi Xie,&nbsp;Xingchen Li,&nbsp;Nuoying Li,&nbsp;Xiaoxuan Jiang,&nbsp;Wenbin Zhang,&nbsp;Shejian Liang","doi":"10.1155/anu/5579376","DOIUrl":"10.1155/anu/5579376","url":null,"abstract":"<p>Citrus processing generates large quantities of peel by-products that are often discarded, resulting in resource waste and environmental burden. This study systematically evaluated the effects of dietary supplementation with fresh <i>Citrus reticulata</i> “Gonggan” peel (NG), fresh <i>C. reticulata</i> “Chachi” peel (NC), and 3-year-aged <i>C. reticulata</i> “Chachi” peel (3 C) on growth performance, muscle quality, antioxidant capacity, immune response, and intestinal microbiota of <i>Oreochromis niloticus</i>. Fresh peels, particularly NG, contained higher concentrations of total flavonoids than aged peels. All three peel additives tended to improve growth performance, with 3C showing the most pronounced growth-promoting effect. Dietary supplementation significantly increased the levels of sweet- and umami-associated amino acids in muscle. The NG group exhibited the highest antioxidant enzyme activities and inflammatory/stress-related marker expression levels, whereas the 3C group showed the lowest levels of oxidative and inflammatory markers. Intestinal microbiota analysis revealed increased microbial richness and altered community composition in all treatment groups, with 3C notably enhancing microbial diversity and altering taxa abundance patterns. Collectively, these findings suggest that three distinct citrus peels may exert differential functional effects as feed additives, although inclusion level and peel type influence the balance between growth promotion and immune activation. This study provides preliminary evidence supporting the utilization of citrus by-products in aquafeeds and supports sustainable and circular aquaculture development.</p>","PeriodicalId":8225,"journal":{"name":"Aquaculture Nutrition","volume":"2026 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2026-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13351333/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148418251","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dietary Sodium Lactate Alleviates Ammonia Stress-Induced Growth Impairment, Oxidative Damage and Metabolic Disorder in Juvenile Yellow Catfish","authors":"Ruiqiong Zhang,&nbsp;Ming Li,&nbsp;Yanjie Tang,&nbsp;Ying Yan,&nbsp;Xuan Chen,&nbsp;Haibo Jiang,&nbsp;Muzi Zhang","doi":"10.1155/anu/7834375","DOIUrl":"10.1155/anu/7834375","url":null,"abstract":"<p>This study aimed to analyze the beneficial impacts of dietary sodium lactate (SLA) on growth, metabolism, and ammonia resistance in juvenile yellow catfish (<i>Pelteobagrus fulvidraco</i>) under chronic ammonia stress. In an 8-week experiment, 360 healthy juveniles (1.64 ± 0.03 g) were assigned to 4 groups (3 replicates, 30 fish/replicate), fed either a basal diet or a 1.00% SLA-supplemented diet with or without 2.5 mg/L total ammonia nitrogen (T-AN) exposure. The results showed that dietary SLA supplementation effectively ameliorated growth inhibition and impaired feed efficiency caused by chronic ammonia stress. At the digestive level, SLA supplementation significantly enhanced the activities of intestinal lipase and pepsin, with no significant change in amylase activity. In addition, dietary SLA positively regulated serum biochemical profiles, improved hepatic antioxidant capacity, and alleviated oxidative damage induced by long-term ammonia exposure. At the molecular level, SLA modulated the expression of hepatic glucose metabolism-related genes, reversed the inhibitory effect of chronic ammonia stress on muscle growth-related gene expression, and downregulated the growth-suppressive gene <i>mstn</i>. Collectively, dietary SLA can effectively mitigate the adverse effects of chronic ammonia stress on juvenile yellow catfish by improving digestive function, regulating metabolic homeostasis, and alleviating hepatic oxidative damage and ammonia toxicity. This study supports the application of SLA as a functional feed additive in aquaculture.</p>","PeriodicalId":8225,"journal":{"name":"Aquaculture Nutrition","volume":"2026 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2026-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13346581/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148418213","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Functional Feeds as Immunostimulants for Aquaculture: A Molecular Perspective","authors":"Uzeme Precious Aluta,&nbsp;Nada Ćujić Nikolić,&nbsp;Arzu Yildirim,&nbsp;Ivana Giovanna Zupičić,&nbsp;Perveen Akhtar,&nbsp;Vladimir Radosavljevic,&nbsp;Sofia A. Costa Lima","doi":"10.1155/anu/2220437","DOIUrl":"https://doi.org/10.1155/anu/2220437","url":null,"abstract":"<p>The development of aquafeeds that enhance immunity in fish represents an effective strategy for disease management in aquaculture. This approach involves incorporating functional ingredients with immunostimulatory properties to improve fish welfare. The use of dietary immunostimulants is considered a suitable, safe, and eco-friendly alternative to mitigate the adverse effects of antibiotics and chemotherapeutics. Hence, there is growing interest among aquaculture stakeholders in immunostimulant sources such as algae, plant derivatives, trace minerals, prebiotics, and probiotics. However, earlier studies have relied on biochemical markers to evaluate the interactions of dietary immunostimulants with the fish immune system, which provide limited mechanistic insights and reduce reproducibility for large-scale applications. Recent advances in molecular approaches, including genomics, transcriptomics, proteomics, metabolomics, and small RNA profiling, have been increasingly applied to elucidate the underlying mechanisms of dietary immunostimulants and to guide the development of species-specific formulations. By integrating these molecular tools, researchers can design sustainable, species-tailored immunostimulant diets that reduce the reliance on antibiotics. This review synthesizes molecular evidence on nutrient-, plant-, microbial-, and algae-based immunostimulants, highlighting how omics tools elucidate their mechanisms and support the design of species-specific functional feeds.</p>","PeriodicalId":8225,"journal":{"name":"Aquaculture Nutrition","volume":"2026 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2026-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/anu/2220437","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148386599","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"DHA-Rich Algae Feed Modulates Atlantic Salmon Health, Microbiota and Stress Response","authors":"Jonas Mueller,&nbsp;Marvin Suhr,&nbsp;Joachim Molkentin,&nbsp;Irene Lautenschläger,&nbsp;Jannick Ehlers,&nbsp;Anna Simon,&nbsp;Stéphanie C. Hornburg,&nbsp;Corinna Bang,&nbsp;Henrike Seibel,&nbsp;Carsten Schulz","doi":"10.1155/anu/4185490","DOIUrl":"10.1155/anu/4185490","url":null,"abstract":"<p>Reducing the amount of fishmeal and fish oil in salmon feed has resulted in a constant decline in the health-promoting long-chain polyunsaturated fatty acids (LC-PUFAs) EPA and DHA available for the fish. As such, enriching feeds with essential fatty acids of nonfish origin becomes increasingly important. Here, we investigated whether diets supplemented with the DHA-rich microalgae <i>Schizochytrium limacinum</i> can improve production performance and health of Atlantic salmon reared in a recirculating aquaculture system (RAS). Atlantic salmon post-smolts (~126 g) held in triplicate tanks were fed diets enriched with <i>S. limacinum</i> at low (2%; SL2) or high (14%; SL14) inclusion or a control diet (CD). Following 8 weeks of feeding, the fish were exposed to peracetic acid (PAA), a commonly used disinfectant for RAS. Sampling of different health indicators alongside profiling the intestinal bacterial communities associated with the digesta and mucosa was used to evaluate the health-promoting effects of the functional diets. Including <i>Schizochytrium</i> in the diet improved feed conversion, growth, and protein retention in Atlantic salmon, most notably in fish receiving the SL14 diet. Fatty acids in whole-body and muscle samples reflected dietary levels, where DHA levels were particularly increased. 16S rRNA amplicon sequencing revealed a significant effect of the diet on beta-diversity in digesta but not in mucosa. Relative abundance of specific genera was not affected by <i>Schizochytrium</i> inclusion, and most bacteria belonged to either <i>Firmicutes</i>, <i>Proteobacteria</i>, or <i>Actinobacteria</i>. Treating the fish with PAA induced an acute stress response, but the increase in plasma glucose and ion levels was diet dependent. Overall, our results highlight that including <i>Schizochytrium</i> in the diet can improve growth performance and modulate the response of Atlantic salmon to acute oxidative stress.</p>","PeriodicalId":8225,"journal":{"name":"Aquaculture Nutrition","volume":"2026 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2026-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13324814/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148373803","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Inclusion of Jack Mackerel Meal in Low-Fish Meal Diets: Impacts on the Growth and Feed Utilization of Red Sea Bream (Pagrus major) and Economic Analysis","authors":"Yu Jin Sim,&nbsp;Sung Hwoan Cho","doi":"10.1155/anu/5589868","DOIUrl":"10.1155/anu/5589868","url":null,"abstract":"<p>Combined animal and plant sources can replace higher levels of fish meal (FM) in fish feeds than a single source, as they compensate for the nutritional imbalances and deficiencies inherent to individual protein sources. Nevertheless, low-FM diets often exhibit deteriorated palatability and reduced feed intake, ultimately leading to retarded growth. This experiment, therefore, aims to assess inclusion impacts of jack mackerel meal (JMM) in low FM diets substituting various levels of FM with combined meat meal (MM) and corn gluten meal (CGM) (MC) on the growth and feed utilization of red sea bream (<i>Pagrus major</i>) and economic analysis. A two-way (FM substitution level [SL] [25% and 50%] × JMM inclusion [without or with]) ANOVA experimental design was adopted. A total of 375 juvenile (initial mean weight of 2.0 g) fish were randomly distributed into 15 flow-through tanks. The control (Con) diet included 60% FM. In the Con diet, 25% and 50% of FM were substituted with MC, and then 24% JMM was included at the cost of FM, named the MC25, MC50, MC25J, and MC50J diets, respectively. All experimental feeds were formulated to be isoproteic (52.0%) and isolipidic (15.0%). The experimental diets were offered to fish twice daily until apparent satiation over an 8-week period. The diets with 25% of FM substitution achieved higher weight gain (WG), specific growth rate (SGR), and feed consumption (FC) in fish than those with 50% of FM substitution. Furthermore, WG, SGR, and FC of fish fed the MC-substituted diets with JMM inclusion were superior to those without JMM inclusion. The highest WG, SGR, and FC were attained in fish fed the MC25J diet. The MC25J diet showed the highest economic profit index (EPI), although no significant difference was detected among dietary treatments. In conclusion, the MC25J diet appears to represent the best feeding strategy to enhance the growth performance and FC in red sea bream and maximize EPI to farmers.</p>","PeriodicalId":8225,"journal":{"name":"Aquaculture Nutrition","volume":"2026 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2026-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13325012/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148373770","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}