Journal article
Microencapsulation of a putative probiotic Enterobacter species, C6-6, to protect rainbow trout, Oncorhynchus mykiss (Walbaum), against bacterial coldwater disease
Journal of fish diseases, Vol.39(1), pp.1-11
01/2016
Handle:
https://hdl.handle.net/2376/116354
PMID: 25272249
Abstract
Flavobacterium psychrophilum is the causative agent of bacterial coldwater disease (BCWD), which has a major impact on salmonid aquaculture globally. An Enterobacter species, C6-6, isolated from the gut of rainbow trout, Oncorhynchus mykiss (Walbaum), has been identified as a potential probiotic species providing protection against BCWD. This study examined the effects of alginate microencapsulation on the protective efficacy of C6-6 against BCWD in vivo when administered to rainbow trout fry orally or by intraperitoneal (IP) injection. Viable C6-6 bacteria were microencapsulated successfully, and this process (microencapsulation) did not significantly deteriorate its protective properties as compared to the administration of non-microencapsulated C6-6 bacteria. Both oral and IP delivery of C6-6 achieved significantly better protection than control treatments that did not contain C6-6 bacteria. The highest relative percent survival (RPS) resulted from IP delivery (71.4%) and was significantly greater than the highest oral RPS (38.6%). Successful intestinal colonization was not critical to protective effects of C6-6. The study showed that C6-6 administration, with or without encapsulation, was a viable choice for protecting fry from BCWD especially when administered intraperitoneally.
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Details
- Title
- Microencapsulation of a putative probiotic Enterobacter species, C6-6, to protect rainbow trout, Oncorhynchus mykiss (Walbaum), against bacterial coldwater disease
- Creators
- B Ghosh - National Centre for Marine Conservation and Resource Sustainability, University of Tasmania, Launceston, Tasmania, AustraliaK D Cain - Department of Fish and Wildlife Resources and the Aquaculture Research Institute, University of Idaho, Moscow, Idaho, USAB F Nowak - National Centre for Marine Conservation and Resource Sustainability, University of Tasmania, Launceston, Tasmania, AustraliaA R Bridle - National Centre for Marine Conservation and Resource Sustainability, University of Tasmania, Launceston, Tasmania, Australia
- Publication Details
- Journal of fish diseases, Vol.39(1), pp.1-11
- Academic Unit
- Center for Reproductive Biology
- Publisher
- England
- Identifiers
- 99900547539501842
- Language
- English
- Resource Type
- Journal article