Health & Welfare
The Shrimp Book: Intensive production of shrimp
With relatively low use of land and water, intensive aquaculture systems can support much higher production than extensive systems.
Responsibility
Pond aeration and aerators: Second thoughts
Aerators, especially paddlewheels, are often used to mix the water and address oxygen stratification in ponds. However, most aerators do not provide the most efficient and power-conscious service. Due to thermal and oxygen stratification in ponds, the efficiency of paddlewheel aerators is low, and other present-day aerators have other problems. Emerging designs should better address effective mixing and aerating of pond water.
Health & Welfare
Nitrogen isotope for evaluating protein uptake in biofloc systems
Measurements of nitrogen isotope uptake can enable more efficient study of feed utilization in whole aquaculture pond systems.
Health & Welfare
Tilapia production using biofloc technology
Biofloc systems enable more intensive tilapia production. The fish adapt to the conditions within biofloc systems and grow well by utilizing the bioflocs as a feed source.
Health & Welfare
Tilapia harvest microbial flocs in active suspension research pond
In a study, microbial flocs contributed about 50 percent of feed material as dry solids and about 50 percent of the protein requirement of tilapia.
Responsibility
Aeration, mixing and sludge control in shrimp ponds
A benefit of aeration is the mixing of pond water. Similar to biotechnological reactors, microbial processes are more effective in mixed pond water.
Aquafeeds
Advantages of aerated microbial reuse systems with balanced C:N, part 2
Aerated microbial reuse systems utilize intense aeration and mixing to produce yields of 10 to 30 metric tons per hectare per cycle with little or no water exchange.
Aquafeeds
Advantages of aerated microbial reuse systems with balanced C:N, part 1
An alternative waste treatment is intense microbial processing of wastes to facilitate high yields with little or no water exchange.
Health & Welfare
Advantages of aerated microbial reuse systems with balanced C:N, part 3
Aerated microbial reuse systems recycle nutrients in the form of organic detritus, which consists of aggregates of organic particles coated with a film of bacteria.
Responsibility
Nitrogen control and protein recycling: Activated suspension ponds
Activated suspension ponds are effective at nitrogen control and protein recycling, functioning as a biofilter and as a microbial recycling system.