Journal article
Isolation of bacterial probiotic candidates from the gastrointestinal tract of rainbow trout, Oncorhynchus mykiss (Walbaum), and screening for inhibitory activity against Flavobacterium psychrophilum
Journal of fish diseases, Vol.35(11), pp.809-816
11/2012
Handle:
https://hdl.handle.net/2376/101446
PMID: 22913277
Abstract
In this study, 318 bacterial strains were isolated from the gastrointestinal (GI) tracts of 29 rainbow trout, Oncorhynchus mykiss (Walbaum). These bacteria were screened in vitro for their ability to inhibit growth of Flavobacterium psychrophilum, the causative agent of coldwater disease. Bacteria observed to inhibit F. psychrophilum growth were further screened against rainbow trout bile, as an indicator of their ability to survive in the GI tract. This screening resulted in narrowing the pool to 24 bacterial isolates. Those 24 isolates were then tested for pathogenicity in rainbow trout by intraperitoneal injection. Following a 28-day challenge, eight isolates were shown to cause direct mortality and were eliminated from further study. As a result, 16 bacterial isolates were identified as probiotic candidates with the potential to control or reduce disease caused by F. psychrophilum.
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Details
- Title
- Isolation of bacterial probiotic candidates from the gastrointestinal tract of rainbow trout, Oncorhynchus mykiss (Walbaum), and screening for inhibitory activity against Flavobacterium psychrophilum
- Creators
- D R Burbank - Department of Fish and Wildlife, University of Idaho, Moscow, ID, USAS E LapatraG FornshellK D Cain
- Publication Details
- Journal of fish diseases, Vol.35(11), pp.809-816
- Academic Unit
- Center for Reproductive Biology
- Publisher
- England
- Identifiers
- 99900546544501842
- Language
- English
- Resource Type
- Journal article