6. Feb, 2019

Texas producer giving RAS shrimp production a charge

Monday, 4 February 2019 Hank Hogan

NaturalShrimp uses patented electrocoagulation process to control pathogens, contaminants

A recirculating aquaculture system (RAS) producer based in Dallas, Texas, USA,- says it has solved the problem of how to grow shrimp commercially in enclosed recirculating tanks.

The secret, according to NaturalShrimp Inc., is a proprietary process it developed that uses an electrical charge to remove and control bacteria, ammonia and other contaminants that hinder shrimp production.

This approach results in high yields and is a process that can be replicated anywhere, even in urban areas far from the sea, Bill Williams, NaturalShrimp chairman and CEO, told The Advocate.

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28. Oct, 2018

Comparing biofloc, clear-water and hybrid RAS systems as shrimp nurseries

Monday, 8 October 2018 Thomas W. Tierney, M.S. Andrew J. Ray, Ph.D

Results show that all systems are suitable for RAS shrimp nursery production

Recirculating aquaculture systems (RAS) can produce high-value species with limited water exchange rate, thus reducing waste discharge and enhancing biosecurity. Biofloc (BF) systems are a form of RAS with algae, protozoans, bacteria, uneaten feed, feces and other organic matter in the water column. Some limiting factors to biofloc systems include abrupt changes in water quality, potential Vibrio sp. outbreaks, buildup of solids, and high energy costs attributable to robust aeration. Consumption of biofloc particles may enhance growth performance of the cultured species and reduce feed costs over time.

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14. Aug, 2018