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Thursday, September 22, 2016

23/09/2016: Successful salmon trucking

Could spring Chinook salmon offspring survive the passage over the dam and subsequent ocean migration to eventually return as adults some 3-5 years after technicians transported them by truck?


According to a written article written by Mark Floyd onPhys.org, for the past several years, technicians have been trucking spring Chinook salmon above Foster Dam in Sweet Home to see if they would spawn, and then eventually migrate to the ocean.

A new study examining the genetic origin of adult spring Chinook returning to Foster Dam offers definitive proof that the offspring survived, potentially opening up miles of spawning habitat on the upper South Santiam and other river systems.

Results of the study have been published in the Canadian Journal of Fisheries and Aquatic Sciences.
 
Image: Richard Fraley

"With a little human assistance, it is now clear that we can restore natural production to areas above some dams and there is prime habitat on some river systems, such as the North Santiam above Detroit Dam," said Kathleen O'Malley, an Oregon State University geneticist and principal investigator on the project.

"This could really contribute to the long-term population viability in some river systems."

Some past studies have explored whether salmon that spawned above dams could survive as juveniles going back through the dams, but this new study is one of the first to assess whether those fish successfully would return years later as adults.

Beginning in 2007, technicians from Oregon Department of Fish and Wildlife and the US Army Corps of Engineers took genetic samples of adult salmon trucked above the dam.

During the first two years, most of those adult salmon were reared in hatcheries and released as juveniles, but in 2009 they began using only wild-born fish, hoping to give a boost to that population. Since then, researchers have taken genetic samples from returning adult salmon to see if their parents were among those released above the dam.

The key is the "cohort replacement rate," Ms O'Malley said.

If you release 100 female salmon above the dam, will you get at least 100 females from that population returning as adults to the dam for a rate of 1.0? The researchers have to sample for several years to determine the success rate of one cohort, since spring Chinook can return as 3-, 4- or 5-year olds.


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

23/09/2016: Small revolution for marine fry and fingerlings

BioMar launches a new generation of starter and transfer diets for marine species containing B-WYSE, promising new yeast based functional ingredient, developed by BioMar’s cooperation partner Lallemand Animal Nutrition.

The aim of the new feed range is to boost the performance parameters and keep the health status of the fish at the highest standard, even after the difficult period of transfer from hatchery to the cages.

Transfer feeds are already commonly used in salmon farming. We are proud that BioMar now is ready to offer the first transfer feed for Mediterranean species, said Michel Autin, Technical Director for BioMar’s EMEA Division, when the new feed was presented at the Aquaculture Europe 2016 conference, of which BioMar again was the Gold Sponsor.
 

BioMar launches a new generation of starter and transfer diets for marine species containing B‑WYSE, promising new yeast based functional ingredient. From left to right: Stéphane Ralite, Aquaculture Product Manager at Lallemand Animal Nutrition, John Thinsley, Senior Researcher, BioMar R&D and Michel Autin, Technical Director for BioMar’s EMEA Division.


In Mediterranean fish farming, the transfer of sea bass, sea bream and meagre from the protected hatchery environment to the harsh environment in the sea cages has always had the risk of losses.

According to Michel Autin, “Improving the health status of the fragile fry and improving their resistance against diseases prior to transfer to cages is of great concern, and we now are ready to offer a transfer feed range that brings a small revolution to Mediterranean fish farming”.

The new generation of BioMar marine starter and transfer feed types, named INICIO Plus M and INTRO Plus MT, are formulated with the inclusion of the two functional ingredients B-WYSE™ and Bactocell®, for reduced deformities, an improved gut health, a better resistance to bacterial attacks (Vibrio spp.) via synergetic immune stimulation and increased mucous production.

Furthermore, the new feeds present a higher Digestible Energy/Digestible Protein ratio without compromising performance parameters while lipid deposits are decreased and the health status of the liver is enhanced, Michel Autin announced.

Stéphane Ralite, Aquaculture Product Manager at Lallemand Animal Nutrition, introduced B-WYSE™, the promising new biologically active product that is being extracted from selected marine yeast by utilising an innovative production process.

BioMar has partnered with Lallemand for the development of this innovative product and various trials have shown its positive effects on the health status of both shrimp and fish, including sea bass and sea bream.

The inclusion of B-WYSE™ in the new transfer diets is combined with the inclusion of Bactocell®, a prebiotic ingredient that BioMar has applied in its feeds since 2010. This functional ingredient is well-documented for reducing deformities and improving gut health across fish species.

Bactocell® was also developed in a cooperation between BioMar and Lallemand and it is still the only probiotic ingredient approved by the EU authorities for the use in fish feed.

Various test show that the combination of B-WYSE™ and Bactocell® have clear positive impacts on health parameters and by this is perfectly suited to strengthen the fragile marine fry and prepare it for transfer to the harsh environment in sea cages, Michel Autin added.

John Thinsley, Senior Researcher, BioMar R&D, explained how the new combination of functional ingredients impact on the fish:

“The first barrier of the fish against external pathogens is the mucus. Strengthening the mucosal barriers in intestines, skin and gills by functional ingredients has a strong influence on its resistance to diseases and parasites.”

“The B-WYSE™ formulation provides not only mucus boosting in terms of quantity and quality but also in terms of enhanced immunomodulating and pathogen binding activities. By this, the external barriers of the fish are boosted against environmental threats.”

“We are confident that our customers soon will experience the positive effects of this revolutionary new concept as we expect that our new marine fry and transfer feeds considerably will improve survival rates and the health status the fragile young fish and protect them against some of the very common diseases in Mediterranean fish farming”, Michel Autin concluded.


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

Wednesday, September 21, 2016

21/09/2016: Marine Harvest’s cleanerfish manager developing new eco-friendly ways to boost fish health

Marine Harvest’s cleanerfish manager, Ronnie Hawkins, is playing an essential role by developing new eco-friendly ways to boost fish health.


In  recent articlepublished on ScottishSalmon it was reported that Ronnie has overseen the introduction of cleanerfish (wrasse and lumpfish) to seawater farm sites across Scotland.

These fish live happily alongside salmon, feeding on any sea lice, adding a sustainable option to salmon husbandry.

Some impressive results are already evident, which Ronnie credits to increased understanding of cleanerfish which helps farmers use them more effectively.
 
Image: Mack Male

Ronnie, who is based in the Marine Harvest office at Stob Ban, Fort William, said: “It’s fascinating to see cleanerfish living alongside our salmon. We’ve had to learn how to care for a completely different species of fish which means understanding how they live, how they rest and how they feed. We’ve had to think on our feet, and use some tried and tested techniques to help us find the most appropriate husbandry practices to encourage cleanerfish to thrive in the farmed environment”.

Marine Harvest has been so impressed with the results so far, it intends to stock the majority of its sites with cleanerfish by the end of 2017.

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

21/09/2016: Only around 60 vaquitas left, totaba swim bladder trade threatens species

In a recent article written by Kata Karáth on New Scientist, it was reported that there are now only around 60 vaquitas left, and it is now up to China whether the world’s smallest porpoise will escape extinction.

That’s according to a report by campaign organisation the Environmental Investigation Agency (EIA).

The critically endangered porpoise is only found in the Gulf of California, where it often gets tangled in gill nets targeting the totoaba, a similarly sized fish that is also endangered and whose fishing and international trade are banned.
 
Image: Lauren Packard

The totoaba’s swim bladders, known as “aquatic cocaine”, are sought for their putative medical effects, and can fetch tens of thousands of dollars in China. This trade still thrives there, despite a fall in prices and the ban, according to an investigation by the EIA.

“The totoaba trade is just not high priority for the Chinese authorities,” says Clare Perry, head of the agency’s Oceans Campaign.

“Open illegal trade in Chinese markets clearly shows the lack of enforcement.”

EIA has monitored the market, including online trading, since April 2015, and conducted undercover investigations in Hong Kong and other parts of southern China.

Posing as investors, the agency’s investigators identified the coastal town of Shantou, in Guangdong province, as the centre of the trade.

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

Monday, September 19, 2016

20/09/2016: EAS celebrates its 40th anniversary

To celebrate the Europeans Aquaculture Society (EAS) 40th year anniversary, they have produced a timeline on their webpage detailing important events in the history of the society.
 

In a statement from Sadasivam Kaushik, the EAS President 2014 – 2016, he had the following to say regarding the EAS 40 year timeline:

“Since EAS was founded in 1976, much has happened in European aquaculture. We have put together a series of milestones to give you an overview of what EAS has achieved during the last 40 years. Some you will know and others (I hope) will be a surprise for you. In any case, I hope you enjoy this summary of the life of our Society”.

From several delegates at the 10th European Symposium on Marine Biology in Oostende getting together to plan a European society for the development of marine aquaculture in 1975, through to a record-breaking 1000 attendees at Aquaculture Europe 2010 in Portugal, the history of the society can be found at the link below.



View the 40th year anniversary timeline 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

FAMSUN company profile



Muyang Co, Ltd recently announced changing its brand name from Muyang to FAMSUN starting May 2014. This move is prompted by the idea of better illustrating the company’s business and the farm-to-table industry chain it serves. It is consistent with Muyang’s global strategy and its aim of becoming an integrated solution provider in the agro-industry.

FAMSUN originates from “famous, farm, family, sun and union”; it implies Muyang Co, Ltd’s development concept and vision, which is to build a green and healthy supply chain from farm to table together with its customers and to convert traditional agriculture into a modern, profitable and sustainable business with its integrated solutions in feed manufacturing, grain milling, grain handling and storage, food processing, as well as industrial automation.

The creative design of the FAMSUN logo features a beveled letter “F”, a curvy letter “A”, a stretching letter “S” and a friendly letter “U”. It will be the only signage representing Muyang’s business, products, service and solutions. Meanwhile, the company will continue to operate in its current structure, provide follow-up service based on relevant agreement, and its business contacts will remain unchanged. 


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

19/09/2016: Biorigin participates for the first time in Aquaculture Europe

One of the most important aquaculture fairs of in Europe, Aquaculture Europe, is held on September 20 to 23 in Edinburgh, Scotland, and this is the first year Biorigin participates as an exhibitor.

Biorigin will be present at stand 30, and will be represented by its technical and sales teams will be available to the visitors to present solutions on natural ingredients for industries and producers who seek better health, performance, and profitability.
 

The highlight will be the product MacroGard, a purified beta-glucan that acts according to the immune status of each animal, contributing to increase disease resistance and to enhance vaccine responses.
 

http://www.roughtcomunicacao.com.br/biorigin/index.php/en/component/content/article?id=123:inovation


 Biorigin will also present other solutions in 100 percent natural ingredient, such as ActiveMOS, a prebiotic additive that modulates the intestinal microbiota, promoting better nutrient absorption and intestinal health; HiCell, a highly digestible protein source, ideal for starter and growing stages; Selemax, an organic selenium source; and Protemyc, mycotoxin adsorbent.

They aim at prospecting the salmon market in the UK to expand our presence in this segment and seek partners and distributors for this region.


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