The need for sustainable aquaculture has promoted research
into the use of probiotics on aquatic organisms. The initial interest was
focused on their use as growth promoters and to improve the health of animals;
however, new areas have been found, such as their effect on reproduction or
stress tolerance.
Probiotics can help aquaculture in the following ways:
Promotes Growth: Probiotics have been used in aquaculture to
increase the growth of cultivated species, it increases the appetite as well as
digestion hence the fish/shrimps can grow more with application of suitable
probiotics.
Inhibits Pathogens: Probiotic microorganisms
release chemical substances with bactericidal or bacteriostatic effect on
pathogenic bacteria that are present in the intestine of the fish/shrimp, creating
a barrier against the proliferation of pathogens. The antibacterial effect is
due to alteration of the intestinal pH due to the generation of organic acids and the production of the following:
antibiotics
bacteriocins
siderophores
enzymes (lysozymes, proteases) and/or hydrogen peroxide
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