期刊
JOURNAL OF FISH DISEASES
卷 32, 期 2, 页码 193-199出版社
WILEY-BLACKWELL PUBLISHING, INC
DOI: 10.1111/j.1365-2761.2008.01015.x
关键词
channel catfish; experimental columnaris; Flavobacterium columnare; Ictalurus puntatus; potassium permanganate
An experiment was performed to evaluate the efficacy of potassium permanganate (KMnO(4)) as a prophylactic and therapeutic treatment of an experimental subacute infection of Flavobacterium columnare in channel catfish, Ictalurus punctatus. Fish were cutaneously abraded and divided into five treatment groups: (i) challenged by waterborne exposure to F. columnare and not treated with KMnO(4) (positive control), (ii) challenged and simultaneously treated with KMnO(4,) (iii) challenged and treated with KMnO(4) at 1, 6 and 9 days post-challenge, (iv) not challenged and treated with KMnO(4) at 1, 6 and 9 days post-challenge (first negative control) and (v) not challenged and not treated (second negative control). The dosing of KMnO(4) was 2.0 mg L(-1) above the potassium permanganate demand for 2 h duration. The survival of the group challenged and simultaneously treated with KMnO(4) (99%) was significantly higher than the positive control (78%) and was not significantly different from the negative control groups. The challenged fish treated with KMnO(4) post-challenge had 7% higher survival than the positive control (85% compared with 78%), but that difference was not statistically significant. The results demonstrate that KMnO(4) has a clear prophylactic value but probably a marginal therapeutic value once the infection has established.
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