Thursday, April 18, 2019

Progressive RAS design

by Rob J Davies, Principal Aquaculture Consultant & Head of RAS Projects, Malta

In order to survive you must adapt and evolve. As the need for land-based fish farms and research centres grows, so does the need to advance the design and efficiency of such facilities and reduce operating costs to enhance long-term feasibility. In order to do this, new technological advances must be tested before they are implemented in a recirculating aquaculture system (RAS), which makes having an R&D Centre essential.


Moreover, the newer facilities need to see tangible benefits from these recent advances; the more you build, the more efficient and lower the operating costs should be. Replicating the same design over and over is a recipe for failure.
 


A selection of these new technologies, in combination with those already established, have enabled rapid progress in RAS design in the last few years. The use of micro-dosing of oxygen and ozone using in-system redox and DO probes has allowed for a considerable reduction in the operating costs of these expensive gasses.

The implementation of nano-bubble technology (not to be confused with micro-bubble), where super-saturated oxygen remains in the water for longer without degassing, means that not only the injection efficiency of this gas has improved and is elevated beyond maximum saturation, but its secondary effects of partial sterilisation of water (reducing bacteria and pathogens) and lowering its density (thus helping to reduce pumping costs), has added more benefits to the overall operating efficiency. Lastly, the use of ozonated protein skimming in both sea and freshwater, cannot be underestimated.

The benefits of this technology are on multiple fronts:

• Removing micro-particulates- (Much beyond the capability of low micron mesh drum filters), enhancing water clarity, gas transfer efficiency, sight of feed and appetite, whilst reducing gill irritation and risk of hydrogen sulphide poisoning from excess solids in the system

• Constant partial sterilisation of the system - Reducing detrimental bacterial colonies and pathogens, and various life stages of some parasites

• Fish stress reduction - Especially when in handling situations, which improves appetite upon recommencement of normal operations and enhances general health

• Reduced heterotrophic competition in the biofilter - Increasing its efficiency, whilst partially directly reducing ammonia and nitrite with the use of low levels of ozone

• Increased degassing of CO2 - Especially with the use of cascade type skimmers which combined the skimming process with degassing, and increased oxygen levels in the system as the ozone reverts to oxygen


Read more HERE.

The Aquaculturists
This blog is maintained by The Aquaculturists staff and is supported by the
magazine International Aquafeed which is published by
Perendale Publishers Ltd

For additional daily news from aquaculture around the world: aquaculture-news

Leiber company profile


Now with more than 140 employees, with each one a specialist in his or her domain, Leiber has a well-proven team in a company following a clear strategy for more than 50 years: working with values.

“What makes us unique? We focus on what we know best. Yeast. Production on the highest level of quality. Latest technology. New findings from science and research. The performance of a team of specialists. 

This is what defines Leiber´s strategic orientation. This is what makes us truly entrepreneurial”, as explained on the Leiber website.

“The markets´ requirements are changing - we are able to follow. This is how we became one of the leading manufacturers of specialised yeast products”.

Visit the website HERE.





 The Aquaculturists
This blog is maintained by The Aquaculturists staff and is supported by the
magazine International Aquafeed which is published by
Perendale Publishers Ltd

For additional daily news from aquaculture around the world: aquaculture-news

Wednesday, April 17, 2019

Aquaculture: Why the need for measuring, monitoring, and data logging?

by B. Serdar Yildirim, Akuamaks, Turkey

When it comes to working with offshore or freshwater (river/pond/dam) cage systems, it's crucial to analyse and log the levels of oxygen and temperature in order to have a strong emergency plan, a good FCR, risk free transport and a healthy stock.
 


The measurement when it's performed manually may not be as efficient and correct for several reasons such as lack of staff, high workload, calibration defects, harsh weather conditions or cable length of the appliance.

Measuring monitoring, and data logging
• Measures dissolved oxygen, temperature and saturation levels instantaneously
• In standard equipment, the user can set the alarm limits
• In "Barge + Cage Model", instant measurement results are transferred to the tablet in Barge from the cages where it's connected by Wi-Fi connection, allowing the staff to monitor the data immediately
• The results are transmitted to the central server over the Internet connection at intervals of five minutes from the tablet, which is monitored in Barge
• In cage facilities without barge, if the distance of the measured cages to the land is less than 400 meters and if there is an office with Internet connection on land, the same system can be used.

Some needs can’t be postponed
We use a system with a direct transmission module in facilities where the cages are located at a distance of 400-metres and where there is no barge. In these types of installations, the fact that they can be connected to the Internet via a mobile phone on those cages to be measured indicates that there is enough signal for data flow. Measurements made in cage five minutes to the central server over the data line at intervals. All measurements are recorded on the central server.

There is a separate file for all systems in the central server. All measurement results can be viewed up-to-date as soon as they are received, as well as recorded. The records can only be accessed by authorised personnel by using a user name and a password. All data can be accessed via tablets, mobile phones and computers anywhere on the globe with Internet connection. The results can be displayed either graphically or as an Excel spread sheet, instantly or by selecting a specific time period.


Read more HERE.

The Aquaculturists
This blog is maintained by The Aquaculturists staff and is supported by the
magazine International Aquafeed which is published by
Perendale Publishers Ltd

For additional daily news from aquaculture around the world: aquaculture-news

GePro company profile






GePro Gefluegel-Protein Vertriebs- gesellschaft mbH & Co. KG is a group company of PHW, one of the largest producers of poultry products in Europe 

As a member of PHW, GePro is part of a completely integrated poultry production.

GePro headquarter is in Diepholz (Germany) with global sales offices located in Bangkok (Kingdom of Thailand) and Moscow (Russian Federation).

GePro transforms poultry by-products from the slaughterhouse into valuable ingredients for animal nutrition and biofuel (SP-Power)

With the state of the art production systems, our products are of extremely high quality and are regarded as benchmarks in the industry. The entire process is under strict veterinarian control leading to consistent flawless quality and great value proposition for our customers.

Visit the GePro website, HERE.

The Aquaculturists
This blog is maintained by The Aquaculturists staff and is supported by the
magazine International Aquafeed which is published by
Perendale Publishers Ltd

For additional daily news from aquaculture around the world: aquaculture-news

Pioneering animal health and nutrition researcher to receive Alltech Medal of Excellence

Dr Richard Murphy, research director at the Alltech European Bioscience Centre in Dunboyne, Ireland, will receive the Alltech Medal of Excellence during ONE: The Alltech Ideas Conference (ONE19) when the event returns to Lexington, Kentucky, May 19–21.

Dr Murphy is receiving the award for his pioneering work in the areas of organic trace element assimilation, microbial enzyme technology and the mitigation of antimicrobial resistance in livestock production. The Alltech Medal of Excellence is Alltech's highest distinction and is awarded annually to someone of great character and achievement.


Dr Richard Murphy, research director at 
the Alltech European Bioscience Centre
Image credit: Alltech 
 Dr Murphy's nearly 20-year career with Alltech began when he received his Ph.D. from the National University of Ireland, Galway after Alltech awarded him a research scholarship. He was under the tutelage of Dr Ronan Power, who is now vice president of Alltech Life Sciences, at the company's original Alltech European Bioscience Centre, which Dr Murphy has now led for 17 years.

His research has provided the basis for a revolution in animal nutrition, including several exciting developments in the industry. These include: the application of organic trace minerals and their potential to positively impact feed quality and decrease feed costs; the optimisation of solid state fermentation systems by utilising microbial enzyme production, opening opportunities for new supplementation approaches; and a better understanding of the microbial factors that influence gut health, which has been integral to the development of novel strategies for mitigating antimicrobial-resistant bacteria.

The Alltech Medal of Excellence is awarded each year during the opening session of ONE. Previous recipients include the late Dr Pearse Lyons, founder of Alltech; George Blankenship, former executive at Tesla Motors, Apple Computer and GAP Inc.; former US Secretary of State Colin Powell; John Calipari, men's basketball coach at the University of Kentucky; and Alan Mulally, former CEO of Ford.

'I'm very honoured to receive the Alltech Medal of Excellence, particularly given the caliber of previous recipients,' said Dr Murphy. 'Having been mentored throughout my career by two past recipients, Dr Karl Dawson (vice president and chief scientific officer at Alltech) and Dr Ronan Power, I consider myself lucky to have worked with such influential scientists, who have guided me through the many stages of my scientific adventures.'

'I would also like to acknowledge the late Dr Pearse Lyons as absolutely instrumental in helping me achieve my ambitions and encouraging in me the scientific curiosity that he himself was known for and shared with us all,' he continued.

During ONE19, Dr Murphy will take the conference mainstage to speak about our understanding of the microbiome, how it functions and how we can better support it, which will have major implications for animal agriculture and for human health.

Alltech's flagship conference, now in its 35th year, is attended annually by nearly 4,000 people from over 70 countries who gather to dream bigger and explore solutions to improve their businesses and the world around them. Ramez Naam, co-chair of Energy and Environment at Singularity University, will join survival expert Bear Grylls and best-selling business author Chris Zook as a keynote speaker at the conference. Naam, who believes Earth's greatest resource is human innovation, will discuss how technology is driving positive change and what we can do, right now, to get in on the action.

Following Tuesday's plenary session, ONE19 attendees will have the unique opportunity to join speakers for dinner as part of the ONE Table Talks. Claim your seat at one of the eight dinners for an interactive discussion on global challenges and opportunities within the food and agribusiness industry.

To learn more and register, visit the One Alltech website, HERE.

The Aquaculturists
This blog is maintained by The Aquaculturists staff and is supported by the
magazine International Aquafeed which is published by
Perendale Publishers Ltd

For additional daily news from aquaculture around the world: aquaculture-news

IFEEDER celebrates 10 years of research and education projects

The Institute for Feed Education and Research (IFEEDER) is proud to celebrate a decade of service to the animal food industry, conducting many high-priority research and education projects that protect the animal food industry's license to operate and provide scientific-based information to decision makers and consumers so they can make informed policy and purchasing decisions.
 

'When the American Feed Industry Association incorporated IFEEDER in 2009, the Board saw the need for a charitable organization to be on the frontlines, helping the animal food industry navigate current challenges and develop opportunities to discuss the global feed industry's sustainability initiatives,' said Lee Hall, IFEEDER's Board of Trustees chair and vice president of Hallway Feeds. 'It's clear that over its 10 years, IFEEDER has filled voids in scientific research to help the animal food industry comply with changing federal regulations, guard against animal disease outbreaks, surpass sustainability targets and reach out to consumers who have questions about where their food comes from. IFEEDER has laid a great foundation over the past decade and I look forward to what's to come.'

Over the past decade, IFEEDER has:
• invested $1.4 million in 33 research and education projects;
• raised over $3.8 million in support of industry initiatives;
• used 100 percent of contributions and $0 administrative fees to fund projects;
• leveraged $5 for every $1 donated;
• included leveraged funds in over 80 percent of its projects; and
• awarded scholarships to students pursuing careers in the animal food industry.

Learn more about some of IFEEDER's top accomplishments on the ifeeder website, HERE.

The Aquaculturists
This blog is maintained by The Aquaculturists staff and is supported by the
magazine International Aquafeed which is published by
Perendale Publishers Ltd

For additional daily news from aquaculture around the world: aquaculture-news

The DIVERSIFY Project, an in depth study into six fin fish species

International Aquafeed and Fish Farming Technology Magazine is currently running a six-part article on the DIVERSIFY Project.

DIVERSIFY was a five-year, 1.8 million Euro research undertaking sponsored by the European Union. The project selected six fin-fish species based upon their economic and biological potential in aquaculture.
 

The study sought to discover the most profitable, healthy, economical, and beneficial product for consumers, fish farmers, and everyone in-between. The six fish species were: meagre, greater amberjack, halibut, pikeperch, grey mullet, and wreck fish.

During the study, our magazine kept in close contact with some of the key researchers. Now, in an exclusive, DIVERSIFY has kindly teamed up with International Aquafeed and Fish Farming Technology Magazine to allow us to share with our readers the results of their research.

Starting in our April 2019 issue, we will be focusing on one species per month. April began the series with a focus on meagre. Our May issue will feature halibut and so on for a six-month run. The DIVERSIFY Project was a major study at the cutting edge of aquaculture research and we are proud to be the first magazine to share the results with the world.

You can read the first of six article in the International Aquafeed and Fish Farming Technology Magazine online, HERE.

The Aquaculturists
This blog is maintained by The Aquaculturists staff and is supported by the
magazine International Aquafeed which is published by
Perendale Publishers Ltd

For additional daily news from aquaculture around the world: aquaculture-news



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