Mr Manuel Poulain, Project Manager, INVE Aquaculture, Thailand
This presentation will address the growing nursery segment in shrimp production in Asia. Microbial management via environmental control is core to this approach. High density nursery systems allow, via its high productivity, a constant application of high quality probiotic as well as the use of superior enriched diets.
The main target is to be able to reduce requirements for water exchange. The focus is on biosecurity which is heavily linked to the shrimp farming production disruption observed globally for more than 30 years. There are considerable savings made to pumping, operations and to sustaining entirely the cost of superior diets and the use of high concentrations of probiotics, resulting in reductions in the overall production cost.
The environmental approach is multitrophic: enhancement of chemoautotrophic organisms within the system, together with control of photoautotrophs (phytoplankton). The constant addition of probiotic plays a major role on the importance of competitive exclusion of pathogenic and opportunistic bacteria such as Vibrio sp. This last part concerns the heterotrophic organism balance, an ultimate piece of the multitrophic puzzle.
This approach focuses on risk management to achieve more consistent results. Consistency generates reduction of protocols risk with its standardization over time. It also creates higher predictability of output, sustaining a more robust business model.