Html 13 103013 1 2 3 4 aqua c ultur e wa ter is hea

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Unformatted text preview: ts/a qua c ultur e .html 1/3 10/30/13 1) 2) 3) 4) Aqua c ultur e wa ter is hea vy, ha r d to ma na ge a nd move diffic ult to tell when fish a r e ill fish food is usua lly expensive a nd huma n c ompetitive wa ter qua lity is c r itic a l, must be kept c lea n a nd unc onta mina ted by huma n a nd fish polluta nts 3) F in fish C u lt u r e - C a t fish F a r min g a ) Spec ies of Inter est - Cha nnel Ca tfish (Ic ta lur us Punc ta tus), one of 7 spec ies of Ic ta lur ida e, a da pt well to a r tific ia l feed, r esista nt to c r owding, mor e a c c epta ble to c onsumer s b) Cr itic a l Elements of Ca tfish Cultur e 1) F a r m Site Selec tion: Pr oper ties of a va ila ble wa ter : slow gr owth in temps of 60 to 70 F ; optima l gr owth in temps of 80 to 85 F ; a bove 85 F feeding dec lines a nd less dissolved oxygen; below 60 F no gr owth but will live down to 32 F . Optima l ph = 6. 3 to 7. 5. Conc er n for pestic ide c onta mina tion fr om soil r unoff r uling out highly fa r med a r ea s. 2) Pond Design: N o tr ue optimum but most...
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