In many countries, shrimp aquaculture production is depressed by disease, particularly caused by vibrio bacteria. Antibiotics, which have been used in large quantities, are in many cases ineffective, or result in increased virulence of pathogens. Formaldehyde products have been widely used, and resistance behavior has started to appear in shrimp farming.
Vibrio parahaemolyticus and Vibrio harveyi have been described as the main pathogens in shrimp species. These pathogens cause serious infections and decreased productivity both in hatcheries and ponds. In addition, this leads to reduced feed conversion and reduced growth rate in surviving individuals.
Most bacterial aquatic diseases are related to vibrio bacteria. These bacteria usually dominate the normal microflora of farmed and wild penaeoidean shrimp. Bacteria will colonise in the digestive tract, release toxins, and eventually destroy the digestive organ known as hepatopancreas. This is leading to high mortality - up to 90 percent.
A new product, SoftAcid Aqua Deca, has been developed and optimised to be used in all phases of shrimp production (from algae to growing phase). The product inhibits growth and biofilm formation of vibrio, not allowing vibrio species to colonise the digestive tracts of the shrimp. Shrimp feeding studies have shown positive results – with higher survival rate, increase in biomass and reduction in feed conversion cost.
Read more, HERE.
The Aquaculturists
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