Submitted to: Aquaculture America Conference
Publication Type: Proceedings
Publication Acceptance Date: 11/5/2001
Publication Date: 1/27/2002
Citation: DELANEY, M.A., VEVERICA, K.L., BEAM, D.R., BRADY, Y.J., WORLEY, S.D., HUELS, K.L. A NOVEL N-HALAMINE DISINFECTANT COMPOUND FOR PROPHYLACTIC TREATMENT OF CHANNEL CATFISH ICTALURUS PUNCTATUS DURING WINTER HOLDING CONDITIONS. AQUACULTURE AMERICA CONFERENCE. 2002. Interpretive Summary:
Technical Abstract: Channel catfish averaging 0.8 kg were stocked into 12-400 m-2 ponds at 11,360kg ha-1(10,000lb acre-1) from 8-12 December 2000. Treatments were randomly assigned to three replicate ponds and were treated monthly beginning in January. Three ponds were treated with MC at 2-3mg L-1, three eponds with 5mg L-1 potassium permanganate, three ponds with formalin at 15mg L-1 and the remaining three ponds remained untreated (controls). The ponds treated with MC were relatively free of parasites and free of external pathogenic bacteria. The control ponds and formalin treated ponds had moderate to heavy loads of Trichodina, Henneguya, Ambiphyra and Flavobacterium columnare. Ponds treated with potassium permanganate (harvested in March) had moderate to heavy loads of Henneguya. Up to 14% of fish died in ponds following the first MC treatment of 3mg L-1 (measured as stotal chlorine). No mortality was observed following subsequent monthly treatments at the lower dose of 2mg L-1 with no apparent change in effectiveness. MC appears to be a superior prophylactic treatment for the control of external parasites and bacteria during winter holding conditions in pond situations. The minimum effective dose for ponds remains to be determined.