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Research Project:
Improved Aquaculture Production Systems
Location:
Aquaculture Systems Research Unit - "ASRU"
Project Number: 6228-63660-001-00
Project Type:
Appropriated
Start Date: May 04, 2002
End Date: Apr 30, 2005
Objective:
The objectives are to: 1) evaluate the control of excessive phytoplankton biomass in intensively managed channel catfish production ponds through biological means; 2) evaluate the use of a forage fish as a supplemental food source for channel catfish in production ponds; 3) determine feasibility of producing channel catfish in a microbial-based, as opposed to a phytoplankton-based, system in tanks, followed by scale-up to plastic-lined earthen ponds; and 4) establish baseline data on passive size-grading of channel catfish in ponds under various environmental and equipment (gear) conditions.
Approach:
Research will be conducted in collaboration with the University of Arkansas at Pine Bluff Aquaculture/Fisheries Center of Excellence, Pine Bluff, AR. Research will be conducted to develop and evaluate methods to improve and assess productivity of channel catfish production by comparing the effects of differing biomasses of filter-feeding fish on phytoplankton biomass, aeration requirements, conversion efficiency, and net and total yield of marketable catfish. The use of a forage fish as a supplemental food source will be evaluated for catfish fed to apparent satiation or fed a restricted ration. Additional production research will evaluate biologicial, economic, and engineering feasibility of channel catfish production under microbial-based conditions in tanks or ponds. Engineering studies will focus on the development of improved systems for: 1) production intensification in pond and tanks; and 2) pond grading systems for separating food fish from undersized fish.
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