Eric De Muylder
CreveTec bvba
Phone: +32473721004
Bioflocs are a mix of detritus with associated bacteria, algae, protozoea, rotifers, copepods, nematodes and other micro-organisms. They are the basis of the food chain in water. The nutritional value of organisms associated with bioflocs have been proven, even for larval stages of shrimp.
The proteins produced in bioflocs by bacteria are called single cell proteins, similar to proteins originating from yeast and algae. Bacterial single cell proteins have been used as raw materials in aquaculture feeds for a long time. Bacterial single cell proteins have been proven successful in the past in feeds for trout, tilapia and African catfish.
Bioflocs are able to assilimate waste nutrients (or pollutants) from the water column, cleaning the water and producing new proteins. Shrimps can passively ingest and digest some of those bacteria and would graze on the substrates to supplement feeds. Nutrient recycling is then a reality.
However, the composition and nutritional quality of bioflocs will vary according to water quality and shrimp biomass. The control and knowledge of these interactions is essential to achieve good production and growth. CreveTec has developed a special biofloc reactor which increases the flexibility of the system and can be used to have a better control on water quality and biofloc composition.

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