Dietary β-1,3 glucan potentiates innate immunity and disease resistance of Asian catfish, Clarias batrachus (L.)

This study investigated the effects of short and prolonged administration of a yeast β‐glucan on non‐specific immune parameters, growth rate and the disease resistance of Asian catfish, Clarias batrachus. Fish fed with a basal diet (control) and test diet (basal diet supplemented with 0.1% glucan) f...

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Bibliographic Details
Published in:Journal of fish diseases 2006-02, Vol.29 (2), p.95-101
Main Authors: Kumari, J, Sahoo, P K
Format: Article
Language:English
Subjects:
3 glucan
Adjuvants, Immunologic - administration & dosage
Adjuvants, Immunologic - pharmacology
Aeromonas hydrophila
Aeromonas hydrophila - drug effects
Animal Feed
Animals
beta-Glucans - administration & dosage
beta-Glucans - pharmacology
Catfishes - immunology
Catfishes - microbiology
Clarias batrachus
Complement System Proteins - drug effects
Dietary Supplements
disease resistance
Fish Diseases - microbiology
Fish Diseases - mortality
Fish Diseases - prevention & control
Gram-Negative Bacterial Infections - mortality
Gram-Negative Bacterial Infections - prevention & control
Gram-Negative Bacterial Infections - veterinary
Hemagglutination - drug effects
Immunity, Innate - drug effects
immunostimulation
innate immunity
Muramidase - drug effects
Nitroblue Tetrazolium - analysis
Peroxidase - blood
Peroxidase - drug effects
Random Allocation
Respiratory Burst - drug effects
Time Factors
β-1
β‐1,3 glucan
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Summary:This study investigated the effects of short and prolonged administration of a yeast β‐glucan on non‐specific immune parameters, growth rate and the disease resistance of Asian catfish, Clarias batrachus. Fish fed with a basal diet (control) and test diet (basal diet supplemented with 0.1% glucan) for 1, 2 and 3 weeks were assayed for superoxide production, serum myeloperoxidase (MPO) content, natural haemagglutinin level, complement and lysozyme activities. Fish were weighed at weekly intervals and specific growth rate (SGR, % increase in body weight per day) was determined. After each week, fish were challenged with Aeromonas hydrophila to measure the level of protection. Results showed that glucan administration at 0.1% in feed, significantly (P 
ISSN:0140-7775
1365-2761
DOI:10.1111/j.1365-2761.2006.00691.x