Short- and long-term effects of a dietary yeast β-glucan (Macrogard) and alginic acid (Ergosan) preparation on immune response in sea bass (Dicentrarchus labrax)

Bagni, M.; Romano, Nicla; Finoia, María Grazia; Abelli, Luigi; Scapigliati, Giuseppe; Tiscar, Pietro Giorgio; Sarti, M.; Marino, G.

doi:10.1016/j.fsi.2004.08.003

Cited by 263 publications

(209 citation statements)

References 49 publications

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“…Segundo Kubitza (2009aKubitza ( , 2009b no cultivo da tilápia do Nilo em piscicultura de viveiro escavado deve-se fazer uso de rações nutricionalmente completas, almejando uma conversão alimentar de 1:1. Segundo alguns pesquisadores, dietas suplementadas com ácidos algínicos não interferiram na performance de crescimento do salmão Salmo salar (GABRIELSEN; AUSTRENG, 1998), do robalo, Dicentrarchus labrax (BAGNI et al, 2005), bem como dietas suplementadas com beta glucanos no Dentex dentex (EFTHIMIOU, 1996) e com vitamina C e vitamina E no salmão Salmo salar em temperaturas de água de 22 oC (HARDIE; FLETCHER; SECOMBES, 1990SECOMBES, , 1991, respectivamente. Da mesma forma, dietas suplementadas com lipossacarídeos não interferiram no crescimento de salmão Salmo salar (GUTTVIK et al, 2002).…”

Section: Resultsunclassified

“…Da mesma forma, dietas suplementadas com lipossacarídeos não interferiram no crescimento de salmão Salmo salar (GUTTVIK et al, 2002). Entretanto, a redução da temperatura da água para 13 oC (temperatura de inverno) resultou em efeito positivo sobre o crescimento de robalo Dicentrarchus labrax após a administração oral de ácidos algínicos (BAGNI et al, 2005). O efeito de alginatos incorporados à ração sobre o desempenho produtivo e manejo de juvenis de tilápia do Nilo (2008) em Epinephelus coioides tratados com alginato de sódio na dose de 1,0 e 2,0 g por kg de ração.…”

Section: Resultsunclassified

“…O uso de alginatos na piscicultura é um meio efetivo para aumentar a imunocompetência e a resistência às doenças no salmão, linguado do atlântico, robalo, truta e carpa comum (PEDDIE; ZOU; SECOMBES, 2002;SKJERMO;BERGH, 2004;BAGNI et al, 2005;HUTTENHUIS et al, 2006, respectivamente). Porém, pouco se sabe quanto a sua eficácia, limitação de uso e resposta para a tilápia do Nilo.…”

Section: Introductionunclassified

“…Os alginatos são conhecidos como indutores de resposta imune não específica a uma série de patógenos, e desta forma, capazes de fortalecer os sistemas de defesas naturais dos peixes a manejos estressores (BAGNI et al, 2005). Este trabalho teve o objetivo de avaliar o efeito do ergosan incorporado na ração sobre o desempenho produtivo e o manejo de juvenis de tilápia do Nilo, Oreochromis niloticus.…”

Section: Introductionunclassified

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O efeito de alginatos incorporados `a ração sobre o desempenho produtivo e manejo de juvenis de tilápia do Nilo

Leonhardt

Leonhardt²,

Cericato³

et al. 2011

Sem. Ci. Agr.

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ResumoOs ácidos algínicos são extraídos de algas marinhas e quando utilizados na dieta dos peixes podem induzir respostas imunomoduladoras e imunoestimulantes. AbstractThe alginic acid is extracted from seaweed and when used in fish ration may induce immunomodulatory and immunostimulants responses. This study aimed to evaluate the effect of alginic acid incorporated in the ration on performance and handling of juvenile Nile tilapia, Oreochromis niloticus. The first phase of the experiment occurred in two excavated ponds earth. 57,000 juveniles were used for Nile tilapia, local strains with the average weight of 14 grams. The juvenile Nile tilapia received the experimental diet treated with ergosan at a dose of 1% of the diet. The survival rate of fish and feed conversion in the experimental Nile tilapia was higher than the control Nile tilapia. In the second stage 54,126 juveniles with average weight 40.63 grams, were used. These fish were transferred to 16 fish cages. There were no significant differences in mortality rate between treatments. The highest mortality occurred between the third and seventh days after the handling. The data confirm that the transfer of juvenile Nile tilapia in the ponds to fish cages is a strong stressor.

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Section: Resultsunclassified

Section: Introductionunclassified

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O efeito de alginatos incorporados `a ração sobre o desempenho produtivo e manejo de juvenis de tilápia do Nilo

Leonhardt

Leonhardt²,

Cericato³

et al. 2011

Sem. Ci. Agr.

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“…Further studies have shown that 565 MacroGard at 0.1% for 15 days also increased serum complement activity, serum lysozyme activity and 566 gills HSP70 content at 30 days from the end of the treatment period. In contrast when the diet was 567 administrated over a longer term (4 cycles of 15 days every 60 days) no effect was found [196]. In 568 seabream fed for one week with MacroGard (1 g/Kg of feed and 10 g/Kg of feed) an increase in head 569 kidney macrophage phagocytic activity with the lower doses and an increase of spleen macrophage 570 respiratory burst and phagocytic activity for the highest doses was detected and a reduction of the 571 mortality rate in a challenge with P. damselae [192] similar to results obtained for sea bass.…”

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confidence: 95%

The response of fish to immunostimulant diets

Vallejos‐Vidal

Reyes-López

Teles

et al. 2016

Fish & Shellfish Immunology

282

119

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8 Fish Immunostimulation through dietary manipulation 9The aquaculture sector has shown a rapid growth over the last 30 years with an associated increase in 10 disease problems as result of rapid expansion and amongst other factors high stocking densities. In order 11to maintain fish health and to improve performance immunostimulants have been used as dietary 12 additives to improve weight gain, feed efficiency, and/or disease resistance in cultured fish. 13An immunostimulant is a natural or chemical substance that stimulates the immune system by specific 14(vaccines or antigens) or non-specific (irrespective of antigenic specificity) routes. In Aquaculture, non- 21The immunostimulant effect of dietary supplements in fish has been focused mainly on the evaluation of 22 non-specific immune parameters and, therefore, on the consequences of these treatments on the innate 23 immune system. The innate immune system has both cellular and humoral components by which it carries 24 out its protective function. The major components of the innate immune system at cellular level are 25 leukocytes, mainly monocytes, macrophages and granulocytes [1,2]. Among the granulocytes, neutrophils 26are the most abundant cell-type and their presence has been described in Salmoniformes, Cypriniformes 27 and Perciformes [3]. Neutrophils and macrophages are responsible for the production of bioactive 28 molecules for pathogen recognition and destruction, cellular communication and activation, initiation of 29 an adaptive immune response and later, resolution of an inflammatory response and tissue repair. 30Furthermore, these cell types are responsible in the majority for phagocytosis [4], one of the main 31 mediators of innate immunity to remove pathogens such as bacteria, viruses, and parasites. For this 32 reason, these immune cell types are also called phagocytes. This microbe/killing mechanism triggers 33 diverse antimicrobial processes that use a wide variety of mechanisms including cellular activation, 34 production of oxidative radicals, and the production of cytokines driving the inflammatory response 35 amongst others. 36Two of the most important antimicrobial systems of phagocytic cells are the NADPH phagocyte oxidase 37 and inducible nitric oxide synthase (iNOS) pathways, which are responsible for the generation of 38 superoxide (O2 − ) and nitric oxide (NO) radicals, respectively. NADPH oxidase, a multi-subunit complex, 39 catalyses a one-electron reduction of molecular oxygen into superoxide anion (O2 − ), also referred to as 40 reactive oxygen species (ROS), which is either spontaneously converted to H2O2 or enzymatically by 41 superoxide dismutase (SOD). In comparison to neutrophils, the size of the respiratory burst is much 42 reduced in macrophages [5]. Since O2 − is the first product to be released from the respiratory burst, the 43 measurement of O2 − has been accepted as a direct and accurate way of measuring respiratory burst 44 activity [6]: the reduction of ferricytochrome c to determine extracellular O2 − , and th...

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