Evaluation of commercial application of dietary encapsulated probiotic (Geotrichum candidum QAUGC01): Effect on growth and immunological indices of rohu (Labeo rohita, Hamilton 1822) in semi-intensive culture system

Amir, Imrana; Zuberi, Amina; Kamran, Muhammad; Imran, Muhammad; Murtaza, Mahmood ul Hassan

doi:10.1016/j.fsi.2019.11.011

Cited by 40 publications

(25 citation statements)

References 71 publications

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“…The cluster selection was confirmed by crosschecks with the fisheries officials at district level. Stratified random sampling was used and 10 semi-intensive (Use of artificial feed and addition of fertilizers for and natural feed production) (Amir et al, 2019) commercial fish farms operated for commercial purpose with at least four labours were selected. Additionally, we followed a simple structural method to randomly select food restaurants which served both lunch and dinner.…”

Section: Study Design and Sitementioning

confidence: 99%

Assessment of food safety knowledge, attitudes and practices of fish farmers and restaurants food handlers in Bangladesh

Hashanuzzaman

Bhowmik

Rahman

et al. 2020

Heliyon

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Section: Study Design and Sitementioning

confidence: 99%

Assessment of food safety knowledge, attitudes and practices of fish farmers and restaurants food handlers in Bangladesh

Hashanuzzaman

Bhowmik

Rahman

et al. 2020

Heliyon

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“…83 Therefore, the use of encapsulated probiotic strains has been encouraged in lieu of these live probiotics as corroborated in the study on L. rohita. 84…”

Section: Probioticsmentioning

confidence: 99%

Immunomodulation by dietary supplements: A preventive health strategy for sustainable aquaculture of tropical freshwater fish, Labeo rohita (Hamilton, 1822)

Gupta

Priyam

et al. 2021

Reviews in Aquaculture

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Dietary supplementation is an effective strategy for boosting the innate immune response in fishes. It involves the use of functional ingredients that bear the potential for mitigating the deleterious effects of chemotherapeutics (bioaccumulation and development of drug-resistant pathogens), as a more ecologically responsible approach to fish farming. With the emergence of probiotics, prebiotics, synbiotics and herbal immunostimulants; dietary supplementation has become an integral aspect of immunonutrition. In this review, we have compiled a list of dietary immunostimulants in rohu, based on the research carried over the last ten years. It should be noted that nearly 25% of the studies on dietary supplementation in Labeo rohita investigated probiotics species (either singly or as mixtures), followed by the use of herbal supplements or phytobiotics. In relation to stress, about 30% of the studies dealt with the supplementation of tryptophan, followed by the incorporation of lipotropes. Moreover, approximately 55-60% of the studies reviewed, were restricted to nutrition-based disease resistance against Aeromonas hydrophila infection. Commercially available probiotics and herbal feed additives have been helpful in the health management of L. rohita to some extent. Ongoing research is consistently exploring novel ingredients inducing favourable immunomodulation to survive stress and widespread A. hydrophila infection in L. rohita. However, further investigations aiming at broad-spectrum disease resistance and multiple stress resilience are recommended. Efforts must also be directed towards the elucidation of specifically targeted response in vivo. Overall, greater insights into the molecular mechanisms of dietary supplementation of immunostimulants warrants the use of downstream analytical techniques and highthroughput screening tools.

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“…Among the strategies for the development of sustainable aquaculture, the utilization of natural sources of vitamins to improve the growth and development of aquatic species has been studied [ 2 , 7 , 8 ]. Vitamins act mainly as cofactors of enzymes, so their inadequate supplementation can be detrimental to organism growth and survival, with increased vulnerability to diseases and infections [ 9 , 10 ].…”

Section: Introductionmentioning

confidence: 99%

“…Due to their coenzyme activities, vitamins contribute to normal metabolic functioning and the maintenance of health [ 8 ]. The hydrophilic vitamin L-ascorbic acid (AA) is an essential micronutrient required by aquatic animals, since they do not have the ability to synthesize it [ 7 , 8 ].…”

Section: Introductionmentioning

confidence: 99%

Ecotoxicity evaluation of polymeric nanoparticles loaded with ascorbic acid for fish nutrition in aquaculture

et al. 2021

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Background Ascorbic acid (AA) is a micronutrient essential for the mechanisms of reproduction, growth, and defense in fish. However, the biosynthesis of this micronutrient does not occur in fish, so it must be supplied with food. A difficulty is that plain AA is unstable, due to the effects of light, high temperature, and oxygen, among others. The use of nanoencapsulation may provide protection and preserve the physicochemical characteristics of AA for extended periods of time, decreasing losses due to environmental factors. Method This study evaluated the protective effect of nanoencapsulation in polymeric nanoparticles (chitosan and polycaprolactone) against AA degradation. Evaluation was made of the physicochemical stability of the nanoformulations over time, as well as the toxicological effects in zebrafish (Danio rerio), considering behavior, development, and enzymatic activity. For the statistical tests, ANOVA (two-way, significance of p < 0.05) was used. Results Both nanoparticle formulations showed high encapsulation efficiency and good physicochemical stability during 90 days. Chitosan (CS) and polycaprolactone (PCL) nanoparticles loaded with AA had mean diameters of 314 and 303 nm and polydispersity indexes of 0.36 and 0.28, respectively. Both nanosystems provided protection against degradation of AA exposed to an oxidizing agent, compared to plain AA. Total degradation of AA was observed after 7, 20, and 480 min for plain AA, the CS nanoparticle formulation, and the PCL nanoparticle formulation, respectively. For zebrafish larvae, the LC50 values were 330.7, 57.4, and 179.6 mg/L for plain AA, the CS nanoparticle formulation, and the PCL nanoparticle formulation, respectively. In toxicity assays using AA at a concentration of 50 mg/L, both types of nanoparticles loaded with AA showed lower toxicity towards the development of the zebrafish, compared to plain AA at the same concentration. Although decreased activity of the enzyme acetylcholinesterase (AChE) did not affect the swimming behavior of zebrafish larvae in the groups evaluated, it may have been associated with the observed morphometric changes, such as curvature of the tail. Conclusions This study showed that the use of nanosystems is promising for fish nutritional supplementation in aquaculture. In particular, PCL nanoparticles loaded with AA seemed to be most promising, due to higher protection against AA degradation, as well as lower toxicity to zebrafish, compared to the chitosan nanoparticles. The use of nanotechnology opens new perspectives for aquaculture, enabling the reduction of feed nutrient losses, leading to faster fish growth and improved sustainability of this activity. Graphic Abstract

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Evaluation of commercial application of dietary encapsulated probiotic (Geotrichum candidum QAUGC01): Effect on growth and immunological indices of rohu (Labeo rohita, Hamilton 1822) in semi-intensive culture system

Cited by 40 publications

References 71 publications

Assessment of food safety knowledge, attitudes and practices of fish farmers and restaurants food handlers in Bangladesh

Assessment of food safety knowledge, attitudes and practices of fish farmers and restaurants food handlers in Bangladesh

Immunomodulation by dietary supplements: A preventive health strategy for sustainable aquaculture of tropical freshwater fish, Labeo rohita (Hamilton, 1822)

Ecotoxicity evaluation of polymeric nanoparticles loaded with ascorbic acid for fish nutrition in aquaculture

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