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Dietary effect of prebiotic supplementation on fish

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types of prebiotics, mechanism, which food contain prebiotics, its use in Aquaculture,

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Dietary effect of prebiotic supplementation on fish

  1. 1. Prebiotics Aquaculture
  2. 2.  In 1995Concept was introduced  By Gibson and Roberfroid.
  3. 3.  Resistant to hydrolysis  Fermented by intestinal microbiota.  Selectively stimulate growth or activity of beneficial intestinal bacteria i.e,  Lactobacillus species  Bifidobacterium species
  4. 4.  Non-digestible food ingredient that beneficially affects the host by selectively stimulating the growth  Chemicals that induce the growth or activity of commensal microorganisms (e.g., bacteria and fungi).
  5. 5.  On the basis of source of origin:  Disaccharide  Oligosaccharide  Resistant Starch
  6. 6.  Laccitol  Lactulose  Xylitol
  7. 7.  Fructo-oligosaccharide (Fos)  Galacto-oligisaccharide  Insulin  Xylo-oligosaccharide  Soybean-oligosaccharide.
  8. 8.  Raw dandelion greens  Raw garlic  Raw leek  Raw onion  Cooked onion  Raw banana
  9. 9.  Live microbial feed supplements that have beneficial effects on the host by improving its intestinal microbial balance.
  10. 10.  Effect on growth  Feed conversion  Gut microbiota  cell damage/morphology  resistance against pathogenic bacteria  Enhance Immunity
  11. 11.  Mechanisms by which prebiotics provide health benefits  Increases the amount of lactic acid producing bacteria (lactobacilli and bifidobacteria) • Increases the amount of Short Chain Fatty Acids (SCFAs)- Butyrate, Acetate, Lactate etc… • Activates carbohydrate receptor immune cells
  12. 12.  On Growth of fish  On immune system
  13. 13.  A study was conducted by a scientist to find the effect of dietary Prebiotic (Saccharomyces cerevisiae),Acidifier,and prebiotic and acidifier on growth parameters.  Prebiotic and Acidifier mixed with commercial diets.
  14. 14.  The fish were evaluated at days 10, 20, 30 and 40 of being fed by the experimental diets.  To check growth rate, feed intake.
  15. 15.  Show prebiotic and acidifier has highest feed intake.  Fish fed with prebiotic and prebiotic with acidifier displayed increased growth rate.
  16. 16.  Experiments exist state their effect as: 1. Selective change in bacterial composition.
  17. 17.  A significantly reduce bacterial load in the intestine. E.g. MOS  Dawson and Pirulescu 1999 stated: significantly lower Clostridium perfringens population in the gut.
  18. 18. block type-I fimbriae and prevents  pathogens from attaching to the intestinal lining and  passes them out of the gut.
  19. 19.  2 month trial on tilapia, Dietary effect of Ascorbic acid on fish immunity.  Decreases the microbial diversity of gut ,shown through results.  control given normal diet.  Treatment 1 given 3% AA diet.  Treatment 2 given 5% AA diet.
  20. 20. CFU  Control: 7.20×10 6/gm  Treatment 1(3%AA): 1.46×10 6/gm  Treatment 2(5%AA): 1.04×10 6/gm  Show that fishes with treatment 2 has the lowest microbial diversity.
  21. 21.  Aquaculture is one of the fastest growing industries in the world.  There is a need for enhanced  disease resistance  feed efficiency  growth performance of cultured fish species.
  22. 22. growth performance and feed efficiency increase  survivility of the fishes increase.  Dietary supplementation of different feed additives e.g. immunostimulants
  23. 23.  Prebiotics have great potential as agents to improve or maintain a balanced intestinal microflora to enhance health and wellbeing
  24. 24.  Javid Mortazavi Tabrizi1  Abolfazl Barzeghar2  Saeed Farzampour3  Hamid Mirzaii4  Saeid Safarmashaei5

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