Journal ArticleDOI
Enzyme producing bacterial flora isolated from fish digestive tracts
TLDR
The study indicates that there is a distinct microbial source of the digestiveenzymes – amylase, cellulase, lipase and protease, apart from endogenoussources in fish gut, that might contribute towards better feed formulations for carp at low cost, incorporating the enzyme producing bacterial isolates as probiotics.Abstract:
Isolationand enumeration of aerobic bacterial flora in the gastrointestinal tract of nineculturable freshwater teleosts, namely catla, rohu, mrigal, silver carp, grasscarp, common carp, tilapia, walking catfish and murrel have been carried outAmylolytic, cellulolytic, lipolytic and proteolytic microflora were identifiedfrom the culture plate using selective media The isolates were qualitativelyscreened on the basis of their extracellular enzyme producing ability Theselected strains were further quantitatively assayed for amylase, cellulase,lipase and protease activities Protease activity was exhibited by almost allthe bacterial isolates, while strains isolated from tilapia, grass carp andcommon carp showed considerable amylolytic and cellulolytic activities Maximumactivity of lipase was exhibited by a strain isolated from silver carp Thestudy indicates that there is a distinct microbial source of the digestiveenzymes – amylase, cellulase, lipase and protease, apart from endogenoussources in fish gut The information generated from the present investigationmight contribute towards better feed formulations for carp at low cost,incorporating the enzyme producing bacterial isolates as probioticsread more
Citations
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Journal ArticleDOI
Role of gastrointestinal microbiota in fish
TL;DR: The involvement of GI microbiota in fish nutrition, epithelial development, immunity as well as disease outbreak, and the need for manipulating the gut microbiota with useful beneficial microbes through probiotic, prebiotic and synbiotic concepts for better fish health management are indicated.
Journal ArticleDOI
Probiotics in aquaculture: The need, principles and mechanisms of action and screening processes
TL;DR: This review provides a comprehensive summary of probiotics in aquaculture with special reference to mollusc culture.
Journal ArticleDOI
Environmental and ecological factors that shape the gut bacterial communities of fish: a meta‐analysis
Karen E. Sullam,Steven Essinger,Catherine A. Lozupone,Michael P. O'Connor,Gail L. Rosen,Rob Knight,Rob Knight,Susan S. Kilham,Jacob A. Russell +8 more
TL;DR: In this paper, the authors examined the influence of abiotic and biotic factors on the gut bacterial communities of fish from different taxa, trophic levels and habitats, and found that fish harbor more specialized gut communities than previously recognized.
Journal ArticleDOI
Enzyme‐producing bacteria isolated from fish gut: a review
TL;DR: The present review will critically evaluate the experimental results on the secondary factor, enzymatic activity and possible contribution of the fish gut microbiota in nutrition to establish whether or not intestinal microbiota do contribute to fish nutrition.
Journal ArticleDOI
Probiotics in aquaculture: Challenges and outlook
TL;DR: This review provides a summary of the status and challenges of probiotic application in aquaculture from the perspective of digestive tract, thereby taking into account the experiences in introducing the preparation, use and safety evaluation of probiotics in Aquaculture.
References
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Journal Article
Protein Measurement with the Folin Phenol Reagent
TL;DR: Procedures are described for measuring protein in solution or after precipitation with acids or other agents, and for the determination of as little as 0.2 gamma of protein.
Book
Methods of Enzymatic Analysis
TL;DR: Methods of enzymatic analysis, Methods of enzymes analysis, the authors, Methods of enzyme analysis, enzymatics, methods of enzymes, and methods of analysis, method of enzymes.
Journal ArticleDOI
Intestinal microflora of salmonids: a review
Einar Ringø,E Strøm,J-A Tabachek +2 more
TL;DR: Bacterial genera isolated from fish intestines vary with salinity, antibiotics, chromic oxide, diet and dietary components such as linoleic acid, and display day-to-day fluctuations.
Journal ArticleDOI
On the functional morphology of the alimentary tract of some fish in relation to differences in their feeding habits; anatomy and histology.
TL;DR: The mouth is larger and more protrusible in Gobio and Cyprinus than in Rutilus , features which may be associated with the mud-grubbing, bottomfeeding habits of the two former fish, while the arrangement of the adductor muscles in Rut lungs enable it to close its mouth more quickly than they and hence it can rapidly snap up its free-moving prey.