Effects of the prebiotic mannan-oligosaccharide on the stress response of feed deprived zebrafish (Danio rerio)

Forsatkar, Mohammad Navid; Nematollahi, Mohammad Ali; Rafiee, Gholamreza; Farahmand, Hamid; Lawrence, Christian

doi:10.1016/j.physbeh.2017.08.010

Cited by 39 publications

(39 citation statements)

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“…MOSs are the prebiotics widely used in food and animal feed to improve gastrointestinal health (Forsatkar et al 2017;Zheng et al 2018;Nguyen et al 2019). The endomannanases capable of catalysing the hydrolysis of b-1,4linked bonds among the mannan substrates are valuable enzyme resources for MOSs production (Chauhan et al 2012).…”

Section: Discussionmentioning

confidence: 99%

Manno‐oligosaccharide preparation by the hydrolysis of konjac flour with a thermostable endo‐mannanase from Talaromyces cellulolyticus

Yang

Chen

Zhou

et al. 2019

J of Applied Microbiology

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Aims A thermostable endo‐mannanase from the fungus Talaromyces cellulolyticus was identified to facilitate manno‐oligosaccharide preparation from Konjac (Amorphophallus konjac) flour. Methods and Results A putative endo‐1,4‐β‐mannanase from the T. cellulolyticus was obtained and efficiently expressed by improving its gene dosage in the genome of the host. After cultivation in a bench‐top bioreactor for about 120 h, the protein content and enzyme activity of mannanase increased to 3·4 g l−1 and 17 500 U ml−1 respectively. Enzymatic characterization showed that this enzyme has an optimal temperature of 80°C, optimal pH of 5·0. Under the optimized hydrolysis conditions of pH 5·0, 70°C, and an enzyme concentration of 200 U l−1 solution, this enzyme could efficiently hydrolyse 0·5% konjac flour into manno‐oligosaccharides (MOSs) with the degree of polymerization range from 3 to 7. The possible mechanism by which the enzyme produced MOSs was also discussed. Conclusion Talaromyces cellulolyticus endo‐mannanase is thermostable and has a broad pH range adaptability. Method of improving the dosage of mannanase gene in the genome could realized its high‐level impression. This enzyme could efficiently hydrolyse konjac flour into manno‐oligosaccharide products. Significance and Impact of the Study This study has enriched endo‐mannanase resources, facilitated its bulk production and provided a strong reference for its application in manno‐oligosaccharide preparation from the natural glucomannan of konjac flour.

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Section: Discussionmentioning

confidence: 99%

Manno‐oligosaccharide preparation by the hydrolysis of konjac flour with a thermostable endo‐mannanase from Talaromyces cellulolyticus

Yang

Chen

Zhou

et al. 2019

J of Applied Microbiology

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“…Several trials using herbal and alternative medicine in fish culture (Hoseinifar et al, ) have been performed to overcome the side effects of using antibiotics for controlling different diseases that cause severe issues in humans, especially drug resistance and antibiotic residues (Chafer‐Pericas et al, ; Obaidat, Salman, & Lafi, ; Park, Jung, & Lee, ). Probiotic (Mehdinejad, Imanpour, & Jafari, ; Meidong et al, ), prebiotic (Bai, Tsuruta, & Nishino, ; Forsatkar, Nematollahi, Rafiee, Farahmand, & Lawrence, ) and even immune‐modulating agents have been used (Fuchs, Schmidt, Slater, Buck, & Steinhagen, ; Valenzuela, Rodriguez, Modak, & Imarai, ). LMWSA was recently introduced as a new source of prebiotics, which significantly increases the fermentation of short chain fatty acids (SCFAs) by gut bacteria (Ramnani et al, ).…”

Section: Discussionmentioning

confidence: 99%

Dietary supplementation with low molecular weight sodium alginate improves growth, haematology, immune reactions and resistance againstAeromonas hydrophilainClarias gariepinus

2019

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A few studies have illustrated the effects of sodium salt derived from alginic acid on different fish species. However, little is known about the effect of sodium alginate on catfish (Clarias gariepinus). Therefore, this study was performed to assess the use of low molecular weight sodium alginate (LMWSA) in C. gariepinus. A total of 180 apparently healthy C. gariepinus with a mean body weight of 45 g were randomly divided into three equal groups (D1, D2 and D3). D1 the control group received a control diet, while D2 and D3 received 1% and 3% LMWSA, respectively, for 8 weeks. A challenge test against Aeromonas hydrophila was performed on 15 randomly selected catfish for 15 days. At the end of the experiment, catfish in D3 that received a diet of 3% LMWSA showed significant increases in the final body weight, weight gain and thermal‐unit growth coefficient compared with those in D2 and D1. There was a significant decrease in the erythrogram in D1 after the 4‐day pathogen challenge. A leucogram revealed leucocytosis, heterophilia and lymphocytosis in catfish in D2 and D3 compared with those in D1. After the 4‐day challenge, the following changes took place: lysozyme, nitric oxide, phagocytic activity and the respiratory burst were significantly elevated in catfish that received LMWSA and were more pronounced in D3 than in D1. The mortalities of catfish have been stopped after pathogen challenge from 8‐day in D1 and D2 where at 6‐day in D3. Thus, administration of 1% and 3% LMWSA enhances the growth, immune response and resistance of C. gariepinus against A. hydrophila.

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“…We used the method of Forsatkar, Nematollahi, Rafiee, Farahmand and Lawrence (2017) to prepare the diets used in the experiment.…”

Section: Diets Preparationmentioning

confidence: 99%

“…The same procedure was used for the control diet except that prebiotic was not added. Fish were fed twice daily (3% body weight) during daylight hours at 1,000 and 1,600 (Forsatkar, Nematollahi, Rafiee, Farahmand and Lawrence (2017)), and the laboratory conditions were the same as listed above for the acclimation time. In earlier work conducted in our laboratory, we found that inclusion of 0.4% Agrimos â results in the higher growth of juvenile zebrafish (Forsatkar, Nematollahi, Rafiee, Farahmand, & Mart ınez-Rodr ıguez, 2017).…”

Section: Diets Preparationmentioning

confidence: 99%

“…The duration of feeding period was 8 weeks, as it has been proposed that a minimum time of 8 weeks of MOS supplementation seems to be necessary to have a positive effect on growth performance and health status (Torrecillas et al, 2014). Fish were fed twice daily (3% body weight) during daylight hours at 1,000 and 1,600 (Forsatkar, Nematollahi, Rafiee, Farahmand and Lawrence (2017)), and the laboratory conditions were the same as listed above for the acclimation time.…”

Section: Diets Preparationmentioning

confidence: 99%

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Effects of the prebiotic mannan-oligosaccharide on feed deprived zebrafish: Growth and reproduction

et al. 2018

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This study was designed to investigate whether the prebiotic mannan-oligosaccharides (MOS) can reduce the deleterious impacts of feed deprivation on growth and reproduction in zebrafish. In the growth performance experiment, juvenile fish were distributed in the following four treatments: normal-control (NC), starved-control (SC), normal-prebiotic (NP) and starved-prebiotic (SP). After 8 weeks, NP and SC fish showed the highest and lowest growth patterns, respectively among treatments.Standard length, specific growth rate and feed conversion ratio did not differ significantly between NC and SP treatments. Autochthonous lactic acid bacteria (LAB) were significantly higher in NP and SP than the NC and SP treatments. Feed restriction resulted in significantly lower concentrations of thyroxine. In the reproductive performance experiment, additional juveniles were fed as in the growth experiment.Crossing in the final week of the experiment resulted in successful spawning in only NP fish, which showed mature sperm and oocytes in histological examinations. The number of spermatozoa was significantly lower in the fish that experienced feed restriction; however, the oocytes of SP females were at the same maturation level to that observed in NC females. Sex-steroids changed after both starvation and MOS supplementation where NC and SP showed no differences in the levels of testosterone and female's 17b-estradiol. These results indicate that MOS supplemented diet reduced some side effects of feed deprivation (final weight and length, SGR, FCR and levels of LAB and T3), and suggest that supplementation of the diet with MOS may ameliorate some of the negative effects of feed deprivation in zebrafish. K E Y W O R D Saquaculture, Danio rerio, growth performance, mannan-oligosaccharides, reproduction indices, starvation

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Effects of the prebiotic mannan-oligosaccharide on the stress response of feed deprived zebrafish (Danio rerio)

Cited by 39 publications

References 50 publications

Manno‐oligosaccharide preparation by the hydrolysis of konjac flour with a thermostable endo‐mannanase from Talaromyces cellulolyticus

Manno‐oligosaccharide preparation by the hydrolysis of konjac flour with a thermostable endo‐mannanase from Talaromyces cellulolyticus

Dietary supplementation with low molecular weight sodium alginate improves growth, haematology, immune reactions and resistance againstAeromonas hydrophilainClarias gariepinus

Effects of the prebiotic mannan-oligosaccharide on feed deprived zebrafish: Growth and reproduction

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