The effects of diet supplemented with
            <i>Lactobacillus rhamnosus</i>
            on tissue parameters of rainbow trout,
            <i>Oncorhynchus mykiss</i>
            (Walbaum)

Popović, Natalija Topić; Strunjak‐Perović, Ivanc̆ica; Sauerborn-Klobučar, Roberta; Barišić, Josip; Jadan, Margita; Kazazić, Snježana; Kesner-Koren, Inga; Crnić, Andreja Prevendar; Šuran, Jelena; Ljubić, Blanka Beer; Matijatko, Vesna; Čož‐Rakovac, Rozelindra

doi:10.1111/are.13074

Cited by 8 publications

(11 citation statements)

References 47 publications

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“…The supplementation of probiotics and/or prebiotics into the diet of fish is believed to result in beneficial alterations of the gut microbiota and subsequent changes in metabolism and energy expenditure that are beneficial for the host (119, 123, 124). The administration of these supplements also enhance immune function of the host and increase its resistance to pathogens, enhancing general health and indirectly favoring feeding and growth (125). These effects highlight the potential for probiotics/prebiotics to enhance fish health by manipulating the fish gut microbiota.…”

Section: Gut Microbiota Manipulation and Applicationsmentioning

confidence: 99%

Gut Microbiota and Energy Homeostasis in Fish

2019

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The microorganisms within the intestinal tract (termed gut microbiota) have been shown to interact with the gut-brain axis, a bidirectional communication system between the gut and the brain mediated by hormonal, immune, and neural signals. Through these interactions, the microbiota might affect behaviors, including feeding behavior, digestive/absorptive processes (e.g., by modulating intestinal motility and the intestinal barrier), metabolism, as well as the immune response, with repercussions on the energy homeostasis and health of the host. To date, research in this field has mostly focused on mammals. Studies on non-mammalian models such as fish may provide novel insights into the specific mechanisms involved in the microbiota-brain-gut axis. This review describes our current knowledge on the possible effects of microbiota on feeding, digestive processes, growth, and energy homeostasis in fish, with emphasis on the influence of brain and gut hormones, environmental factors, and inter-specific differences.

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Section: Gut Microbiota Manipulation and Applicationsmentioning

confidence: 99%

Gut Microbiota and Energy Homeostasis in Fish

2019

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“…rhamnosus on red sea bream (Dawood et al, 2017 ), showed significant increase of plasma and mucus parameters (total protein, mucus myeloperoxidase activity, and mucus secretion), and concluded the results to be a sign for beneficial effects on host physiological responses. In a study with rainbow trout, Popovic et al ( 2017 ) investigated the effect of dietary Lb. rhamnosus (10 7 and 10 8 CFU g −1 ) on intestinal microbiota and histology, biochemical parameters, and antioxidant defense in a 6-weeks feeding trial.…”

Section: Lab As Probioticmentioning

confidence: 99%

“…The authors concluded that Lb. rhamnosus was a promising feed additive, capable of improving rainbow trout health (Popovic et al, 2017 ).…”

Section: Lab As Probioticmentioning

confidence: 99%

Lactic Acid Bacteria in Finfish—An Update

et al. 2018

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A complex and dynamic community of microorganisms, play important roles within the fish gastrointestinal (GI) tract. Of the bacteria colonizing the GI tract, are lactic acid bacteria (LAB) generally considered as favorable microorganism due to their abilities to stimulating host GI development, digestive function, mucosal tolerance, stimulating immune response, and improved disease resistance. In early finfish studies, were culture-dependent methods used to enumerate bacterial population levels within the GI tract. However, due to limitations by using culture methods, culture-independent techniques have been used during the last decade. These investigations have revealed the presence of Lactobacillus, Lactococcus, Leuconostoc, Enterococcus, Streptococcus, Carnobacterium, Weissella, and Pediococcus as indigenous species. Numerous strains of LAB isolated from finfish are able to produce antibacterial substances toward different potential fish pathogenic bacteria as well as human pathogens. LAB are revealed be the most promising bacterial genera as probiotic in aquaculture. During the decade numerous investigations are performed on evaluation of probiotic properties of different genus and species of LAB. Except limited contradictory reports, most of administered strains displayed beneficial effects on both, growth—and reproductive performance, immune responses and disease resistance of finfish. This eventually led to industrial scale up and introduction LAB-based commercial probiotics. Pathogenic LAB belonging to the genera Streptococcus, Enterococcus, Lactobacillus, Carnobacterium, and Lactococcus have been detected from ascites, kidney, liver, heart, and spleen of several finfish species. These pathogenic bacteria will be addressed in present review which includes their impacts on finfish aquaculture, possible routes for treatment. Finfish share many common structures and functions of the immune system with warm-blooded animals, although apparent differences exist. This similarity in the immune system may result in many shared LAB effects between finfish and land animals. LAB-fed fish show an increase in innate immune activities leading to disease resistances: neutrophil activity, lysozyme secretion, phagocytosis, and production of pro-inflammatory cytokines (IL-1β, IL-6, IL-8, and TNF-α). However, some LAB strains preferentially induces IL-10 instead, a potent anti-inflammatory cytokine. These results indicate that LAB may vary in their immunological effects depending on the species and hosts. So far, the immunological studies using LAB have been focused on their effects on innate immunity. However, these studies need to be further extended by investigating their involvement in the modulation of adaptive immunity. The present review paper focuses on recent findings in the field of isolation and detection of LAB, their administration as probiotic in aquaculture and their interaction with fish immune responses. Furthermore, the mode of action of probiotics on finfish are discussed.

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“…When incorporated into the diet, the probiotic bacteria proliferate within the existing microbiome, compete with pathogens for nutrients and space, and help to maintain a healthy microbial balance 93,98 . Interest in this area of research is growing and many experiments have investigated the beneficial effects of probiotics and prebiotics 99–102 . For example, Bacillus and Lactobacillus are two types of probiotic bacteria commonly used in aquaculture that have demonstrated the capacity to improve fish health.…”

Section: Alternative Strategies For Disease Prevention and Mitigationmentioning

confidence: 99%

Disease prevention and mitigation in US finfish aquaculture: A review of current approaches and new strategies

Wright

Yang

et al. 2023

Reviews in Aquaculture

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In the United States, the aquaculture industry has not seen the same levels of growth in production as other countries—made evident by the $17 billion seafood trade deficit estimated in 2020. Nevertheless, aquaculture remains an important industry fully capable of supplementing the domestic seafood supply and reducing the US seafood trade deficit. Infectious diseases is one of several factors that threatens the capability and sustainability of the aquaculture industry, highlighting the importance of effective control strategies for these pathogens. Antimicrobial products are often used to control and eliminate undesirable microbes in effort to prevent or mitigate the impacts of infectious diseases. Some pathogens are capable of adapting to and resisting the antimicrobial effects, escalating the challenges associated with disease management in aquaculture. Antimicrobial resistance (AMR) is now recognised by numerous national and international agencies as a top global health concern and is problematic for US aquaculture. Currently, disease prevention and mitigation strategies utilised by US finfish aquaculture can be broken down into three levels; comprehensive protocols (biosecurity, disease response), good husbandry strategies (stress management, proper diet, optimal environment) and effective antimicrobial products (biocides, therapeutics). This review will discuss how each level contributes differently to the overall protection of fish from pathogens. In the era of AMR, this review will also highlight current and emerging alternative strategies that do not rely on traditional antimicrobial products (e.g., vaccines, dietary supplements, novel antimicrobial, stock selection) for disease prevention and mitigation.

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The effects of diet supplemented with Lactobacillus rhamnosus on tissue parameters of rainbow trout, Oncorhynchus mykiss (Walbaum)

Cited by 8 publications

References 47 publications

Gut Microbiota and Energy Homeostasis in Fish

Gut Microbiota and Energy Homeostasis in Fish

Lactic Acid Bacteria in Finfish—An Update

Disease prevention and mitigation in US finfish aquaculture: A review of current approaches and new strategies

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