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Dietary probiotic supplementation in growth and health of live-bearing ornamental fishes

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Title Dietary probiotic supplementation in growth and health of
live-bearing ornamental fishes
Not Available
 
Creator Sahu,Chittaranjan
Sinha,Archana
Ghosh,Shubhadeep
 
Subject probiotic
ornamental fishes
 
Description Not Available
Bacillus subtilis, a probiont isolated from the intestine of
Cirrhinus mrigala (Hamilton), was incorporated in fish feed
at four different concentrations (5 · 108, 5 · 107, 5 · 106
and 5 · 105 cells g1) and fed to Poecilia reticulata (Peters),
Poecilia sphenops (Valenciennes), Xiphophorus helleri (Heckel)
and Xiphophorus maculatus (Gunther) for a period of
90 days. The growth parameters, proximate composition of
whole body, digestive enzymes and gut microbiology were
monitored at regular monthly intervals. The increments in
length and weight and the survival were significantly higher
(P < 0.05) and the values of food conversions were significantly
lower (P < 0.05) in fishes fed the probiotic feeds.
The administration of B. subtilis in diet resulted in an increase
(P > 0.05) in body ash and protein content and in
the specific activity of protease and amylase in the digestive
tract of all the fishes. The counts of total heterotrophs,
motile aeromonads, presumptive pseudomonads and total
coliforms were significantly lower (P < 0.05) in the gut of
the probiotic fed fishes. Bacillus subtilis persisted in the fish
intestine and in the feed in high numbers during the
feeding period. The high survival and low infectivity recorded
in the probiotic feed fed fishes when challenged by
immersion assay with the pathogenic Aeromonas hydrophila
demonstrate that the probiotic strain confers disease
resistance in live-bearing ornamental fishes. A probiotic
concentration of 106 to 108 cells g1 is adequate for improved
growth performance and survival and for healthy
gut microenvironment and use of higher concentration of
the probiont did not always lead to significantly better
results.
Not Available
 
Date 2021-09-08T08:20:54Z
2021-09-08T08:20:54Z
2007
 
Type Article
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/61803
 
Language English
 
Relation Not Available
 
Publisher Blackwell Publishing