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  C005 Choosing the Right

quaculture Product

Aquaculture Library

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Some exciting facts about

aquaculture:

• It’s a young and fast-growing segment of American agriculture.

• Feed conversion rates for fish are muchhigher than for common commerciallivestock.• Fish can yield 6,2! "ounds

"er acre.

• #eef yield a""ro$. %,!!!"ounds "er acre.

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But aquaculture is seciali!ed

and ris"y #

• It’s not easy to see the fish in their environment.

• &ater 'uality management is unfamiliar to many.

• (evere weather, flooding,disease or mechanical"ro)lems can severelyin*ure or kill an entire cro".

• +a)or costs are high.• he cro" is highly "erisha)le.

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$he imortance of %ater

suly #

• rucial to a'uaculture success

• (ee Agd/et.com lesson A!!6 for

details

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&ater temerature is "ey #

• &ater tem"erature and length of growing

season must )e a""ro"riate during a

significant "ortion of the year.• 0roducing fish outside their normal

climate means e$"ensive tem"erature

changes, increases "roduction costs andmakes commercial success unlikely.

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So %hy does temerature

matter'

• Fish are cold-)looded.

• #ody tem"erature is close to water

tem"erature.• 1eta)olism increases with

tem"eratures.

• ("awning and egg hatching aregeared to natural tem"eraturechanges.

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(timum temerature ranges:

• ach a'uatic animal re'uires a s"ecificgrowth-"romoting tem"erature

• em"eratures too low• +onger to reach market si3e

• 0roduction costs increase

• em"eratures too high• (tress leads to reduced growth, disease,even death

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)* &arm%ater secies:

• #est growth )etween

64 and 46 F

• (unfish, )ass, catfish, tila"iaand cra""ie

• $am"le5 hannel catfish die

at tem"eratures a)ove F,

sto" growing at 6! F or colder,o"timum growth efficiency

at 47 F.

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+* Cool%ater secies:

• /eed tem"eratures )etween

and 8 F

• 9""er "art of range idealfor growth

• (tri"ed )ass, hy)rid stri"ed

)ass, yellow "erch, walleye

and northerns

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,* Cold%ater secies:

• #est in water )etween

: and 4 F

• (almon, trout and whitefish• $am"le5 ;ain)ow trout die

at tem"eratures a)ove 8!

F and grow at o"timum

efficiency at F.

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&hen ready to ic" your

-cro./ loo" for #

%. <nown techni'ues for "roducing large num)erof seed stock in a hatchery or other controlledarea

2.  A s"ecies ada"ta)le to high density culture"ractices

7. he s"ecies grows efficiently on nutrients or

feed "rovided )y the manager :.  An accessi)le market where selling "ricee$ceeds cost of "roduction

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Should you try

something ne%'

• It’s hard to find information onre"roductive )iology, nutritional needs,

diseases and market acce"ta)ility .• It’s hard to find feed, fingerlings,

seedstock, su""lies and technicalassistance.

• (ticking with the =tried and true> increasesyour chance of success.

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Choosing a site #

• Factors toconsider5

• ?igh clay contentif "onds are used

• 0hysical featuresof the land

•  Any legalrestrictions

•  Any re'uired"ermits

Photo courtesy The Catfish Institute.

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Considering mar"et

ossibilities #

•  Are there seasonal changes in "rice and

demand

• &hat are consumer "references• &hat is your com"etition

• ?ow high is "roduction cost

• an a reasona)le "rofit )e made

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Start out small #

• 9se a small-scale "ilot test to test your

working "lan.

• s"ecially im"ortant if working with a news"ecies or techni'ue

• est your management skills and

minimi3e "ossi)le losses.

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granted or use by acti!e "g#d$et.com® subscribers. "%% other use is prohibited.

ST#&"'T P#T#'S($ and ")#*$#T +( are registered trademars o Stewart Peterson Inc

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