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Enhancing the growth and health of sockeye salmon (Oncorhynchus nerka) in land-based freshwater aquaculture

Thesis type
(Thesis) M.Sc.
Date created
2021-12-08
Authors/Contributors
Author: Yuan, Anqi
Abstract
The goal of this research was to provide data to assist in optimizing freshwater aquaculture practices for sockeye salmon (Oncorhynchus nerka), and specifically, for LSL a land-based, freshwater sockeye salmon farm. Thus, this study successfully conducted inaugural trials using 17 beta-estradiol waterborne treatments (200 μg/L, 400 μg/L and 800 μg/L) to feminize genetic males to develop an enhanced male population to achieve larger sized sockeye at slaughter. In addition, this study tested the effects of weekly netting stress over 100 days and revealed a significant reduction in body weight and length of juveniles, and a change in the abundance of three liver proteins involved in the immune-responsive gene regulation, protein processing and cytoskeletal structure organization. However, bacterial kidney disease prevalence, leukocyte count, hematocrit, and whole-body cortisol level were not affected. This research shows that mild physical stress does compromise growth in juvenile sockeye salmon and would restrict commercial production substantially.
Document
Identifier
etd21725
Copyright statement
Copyright is held by the author(s).
Permissions
This thesis may be printed or downloaded for non-commercial research and scholarly purposes.
Supervisor or Senior Supervisor
Thesis advisor: Marlatt, Vicki
Language
English
Member of collection
Download file Size
input_data\21716\etd21725.pdf 2.81 MB

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