Land-Based Atlantic Salmon Production- Overcoming Barriers to Support Growth
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- Опубліковано 27 лип 2021
- Land-based closed containment salmonid production represents an important and growing sector of the overall aquaculture industry.
These land-based operations utilize water recirculation aquaculture systems, also known as RAS technologies. RAS can provide numerous benefits including; enhanced biosecurity, increased optimization and control over the fish rearing environment, effective capture of waste, no interaction between farmed fish and wild fish populations, and reduced overall carbon footprint by providing increased domestic seafood availability close to local markets.
Support for research and technology development is needed to facilitate the growth of this industry sector and is vital to meet U.S. seafood demand. Continued research and development in closed containment aquaculture production will also facilitate domestic agricultural economic contribution, job growth, and food security. This video explains two current barriers to this industry that UWSP NADF and partners are investigating and looking to overcome.
Please visit this project's webpage for deliverables or more information: www.uwsp.edu/cols-ap/nadf/Pag... - Наука та технологія
Really wish I lived closer to Wisconsin. Love these videos, thank you for the information
Excellent video
we have salmon grow out farms in New Zealand, salmon species not native. the advantage is that no lice is present in our waters. but human impact is resorting us towards ras tech. we have kingfish ras dominating our aquaculture industry tho I'd like to diversity with freshwater and ocean water ras project. being aquaponics and algae cultivation playing a key role in reducing operational costs to a minimal. would love to learn the tech as salmon ras nz is very new to us.
Thank you for your comment, check out our deliverables specific to RAS here: www3.uwsp.edu/cols-ap/nadf/Pages/Recirculating-Aquaculture-Systems.aspx
Also, there is a great book resource on RAS: www.amazon.com/Recirculating-Aquaculture-M-B-Timmons-Vinci/dp/0971264694/ref=asc_df_0971264694?tag=bingshoppinga-20&linkCode=df0&hvadid=80539356894430&hvnetw=o&hvqmt=e&hvbmt=be&hvdev=c&hvlocint=&hvlocphy=&hvtargid=pla-4584138878389083&psc=1
It seems like the researchers are treating Saprolegnia, a facultative pathogen, like it is an obligate pathogen. There are three consequences: 1) Early infection is overlooked as a valuable biological indicator for compromised fish homeostasis, usually due to suboptimal nutritional or environmental conditions. 2) Early infection is circumstantial evidence of organic matter buildup in the system, as are bacterial off flavors, and these must be removed. 3)Treating the Saprolegniasis symptom and not its etiology directs resources away from the causes of suboptimal fish health and/or rearing conditions. I hope the researchers will learn of these comments and consider them. I'd also like to thank them for this research: Once sapro gets beyond the early stage, it becomes a primary pathogen so this research will benefit healthy fish exposed to high infectious loads in many systems.
Dean, thank you for your comment and you bring up some good points. We definitely agree, early detection and overall fish health are two major factors that cannot be overlooked regarding pathogens and infection. Also agree that saprolegnia is not generally the primary stressor. Fish without physical injury or having poor immunocompetence can generally avoid infection. The intention of this study was to provide a water treatment to reduce the occurrence of these opportunistic pathogens. This study was separate from the geosmin study, please check out some of this work published through The Conservation Fund Freshwater Institute, which provides a better introduction for this work. Let us know if you have any further questions: onlinelibrary.wiley.com/doi/full/10.1111/are.15155
I was wondering if the current practice of trying to eliminating pathogens on these animal might be the cause for the outbreak in the first place? I feel balance microbes in what we perceived as good and bad might be more beneficial? Strong animal can exist when they can withstand harsh environment they are in.
Agree, although when salmon are undergoing smoltification, they become easily stressed and susceptible to pathogens, one of the most common and damaging at this stage is saprolegniasis according to the industry. The treatments we are investigating are therapeutants that help the fish get through this vulnerable stage.
How is the research going?
Hello Blair, Thank you for asking, please check out our deliverables so far from this project, including publications at the bottom of this page: www3.uwsp.edu/cols-ap/nadf/Pages/Overcoming-barriers-to-support-the-growth-of-land-based-Atlantic-salmon-.aspx