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 Aquaculture 2001 -
Meeting Abstract
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533
A PARTIAL BUDGET ANALYSIS OF THE ECONOMICS OF PRODUCING
STOCKER CATFISH
Ictalurus
punctatus |
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Steeve
Pomerleau*and Carole Engle
Aquaculture/Fisheries Center
University of Arkansas at Pine Bluff
P.O.Box 4912
1200 N.University
Drive
Pine Bluff,AR 71601
USA
spomerleau@uaex.edu
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Multiple-batch production systems for catfish involve
understocking catfish into growout ponds where several batches
of fish of different sizes and ages are already present.The
optimal size to understock will depend on the cost of
producing different sizes of fingerlings and stockers,and the
aditional benefit that can be obtained from stocking them in
growout ponds.Understocking a larger stocker-sized (20-25 cm
or 8-10 in.)fish is believed to result in improved survival
and higher overall yields.However,little is known about the
cost of producing stocker catfish. Pond production trials were
conducted to compare yield,growth,feed conversion
ratio,cost,and economic risk of producing catfish fingerlings
with and without thinning.First,enterprise budgets were
developed for a traditional catfish fingerling production pond
based on published recommendations without thinning
fry.Later,a partial budget analysis was conducted to evaluate
the relative costs and benefits of production methods that
included stock thinning to produce high yields of 3 inch (7.6
cm)fingerlings.Subsequent partial budgets were developed to
compare the additional costs and benefits of second-year
growth of 3 inch (7.6 cm)fingerlings to 8-10 inches (20-25 cm)
catfish stockers,based on each of three different stocking
densities. The significantly higher yield of fingerlings at
the higher densities resulted in lower costs /fingerling,
/kg,and /cm.The scenarios that were based on stocking at
higher densities followed by periodic divisions of stocks
produced fish of similar sizes,
but at lower
costs. | |
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2006 World Aquaculture Society All Rights
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