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March 21, 2016


CP Foods Checks Out Closed-Loop Shrimp Farm


Thailand’s Charoen Pokphand Foods has sent more than 1,000 people to the Thongchai shrimp farm in eastern Thailand to see how a closed-loop shrimp farm incorporating tilapia and barramundi can combat early mortality syndrome (EMS).


Chaiwairuth Arunsopha, the owner of Thongchai, started designing a new way to farm shrimp when it became clear farmers would have to live with EMS.  He transformed his ponds, which used to grow only shrimp, into an experimental closed system featuring four different types of pond.


The first of pond contains shrimp.  The water from it is suctioned into a second pond that contains tilapia.  The tilapia feed on the wastes from the shrimp pond.  Then, by gravity flow, they flow into a third pond that contains barramundi, or sea bass, that feed on the tilapia.  In the fourth pond, minerals and nutrients are added to the water before it is returned to the shrimp pond.


On Arunsopha’s farm, this closed-loop system apparently improved shrimp survival rates from a baseline of between 30 to 50% all the way up to 90%.


Source: Undercurrent News [eight free news reads every month].  Editor, Tom Seaman (   CP Foods Eyes Thai Shrimp Farmer’s Green Methods.  March 21, 2016.

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