Use of probiotics to control furunculosis in rainbow trout, Oncorhynchus mykiss (Walbaum)

A. Irianto, B. Austin

    Research output: Contribution to journalArticle

    Abstract

    Aerobic heterotrophic bacteria were isolated from the intestinal contents of Atlantic salmon, Salmo salar, rainbow trout, Oncorhynchus mykiss, and turbot, Scophthalmus maximus, on tryptone soya agar and De Man Rogosa and Sharpe agar, of which 11 of 177 (6% of the total) of the isolates were antagonistic to Aeromonas salmonicida. Four of these cultures, which were identified tentatively as A. hydrophila, Vibrio fluvialis, Carnobacterium sp. and an unidentified Gram-positive coccus, were beneficial to fish when fed singly or as an equi-mixture. Feed supplemented with the putative probiotics indicated survival of the organisms in the gastrointestinal tract for 7 days. Feeding with the probiotics for 7 and 14 days led to better survival following challenge with A. salmonicida. There was no indication of serum or mucus antibodies to A. salmonicida, but there was an iocreased number of erythrocytes, macrophages, lymphocytes and leucocytes, and enhanced lysozyme activity in the fish.

    Original languageEnglish
    Pages (from-to)333-342
    Number of pages10
    JournalJournal of Fish Diseases
    Volume25
    Issue number6
    DOIs
    Publication statusPublished - 2002

    Keywords

    • Cellular immunity
    • Furunculosis
    • Probiotics
    • Rainbow trout

    Fingerprint Dive into the research topics of 'Use of probiotics to control furunculosis in rainbow trout, Oncorhynchus mykiss (Walbaum)'. Together they form a unique fingerprint.

  • Cite this