Aquaculture

EM5 10 AQ aquafeed additives 2Preventive health protection and thriving fish

This article was featured in Eurofish Magazine 6 2021.

Pre-, pro-, syn- and postbiotics have been increasingly used in aquaculture for some time in order to strengthen the immune system of fish, improve their health and reduce the use of drugs in cases of illness. What kind of substances are they, what are the mechanisms by which they work and most important of all – do they really help?

EM5 21 AQ Landbased maricultureAdvantages and risks of land-based fish production

This article was featured in Eurofish Magazine 5 2021

Until now, recirculating aquaculture systems (RAS) have mostly been used to produce freshwater fish species such as eel, African catfish, tilapia, zander or sturgeon. Now, however, an increasing number of projects for land-based RAS that are designed for marine fish are emerging. For salmon alone, the planned capacity is over half a million tonnes. Investors are fuelling this development, but are their profit expectations actually justified?

EM4 21 AQUAQuantities produced reached a record level in 2019

This article was featured in EUROFISH Magazine 4/2021.

According to surveys carried out by the Food and Agriculture Organisation (FAO), the quantities produced by global aquaculture reached an all-time high of 120 million tonnes (live weight) in the year 2019, with a total sale value (ex farm gate) of 274.6 billion US dollars. Of this, 85.3 million tonnes were accounted for by animals (USD 259.5 billion), 34.7 million tonnes by algae and aquatic plants (USD 14.8 billion) and 26,841 tonnes by ornamental shellfish and pearls (USD 228.4 million).

The quantities produced by global aquaculture have been increasing for decades and have become enormously important for feeding the world’s population. An example of this development is the proportion of the global fish supply made up by aquaculture, which was 47.9 percent in 2019. This means that almost half of all fish consumed glob- ally that year came from a farm. At the turn of the millennium, this proportion was only about a quarter (25.7 percent). The point at which more fish will come from aquaculture than from fisheries is not so far away. In some production areas, the ‘more farmed than caught’ milestone has actually already been reached. In the year 1970, the quantity of algae and water plants produced by aquaculture exceeded the amount from natural harvesting for the first time. In 1986, this milestone was reached for freshwater fish, and in 1994 for molluscs. In 1997, it was the turn of diadromous fish species, which include sturgeon and some salmonid species that regularly migrate between salt and fresh waters during specific life cycles, and in 2014 more crustaceans were farmed than were caught in the wild for the first time.

EM3 21 AQ BiomarkBiomark provides advanced technology solutions for broodstock management

This article was featured in Eurofish Magazine 3/2021.

Broodstock management lies at the heart of successful aquaculture production. Fish that better meet market demand are produced through generations of strategic breeding. Regardless of species or location, monitoring broodstock success requires careful analysis of breeding efforts and the ability to trace offspring.

RFID technology or PIT tag implantation is a popular solution for broodstock management. The ability to track individuals throughout their lifecycle is an effective strategy for observing the heritability of traits related to survival, growth, disease resistance, fecundity, etc. By incorporating genetic data with RFID tracking, managers can identify target genotypes associated with desirable traits, and then optimise breeding strategies to ensure the expression of those desirable traits in the hatchery population. The use of PIT tag unique identifiers is critical to separating fish with traits that foster successful stocks.

Sustainability certificates are also gaining in importance in Asian aquaculture operations and are often even a mandatory requirement for a successful export business.Sustainability certificates increase trust in aquaculture products

This article was featured in Eurofish Magazine 3 2021.

In many European countries it is currently a somewhat rare find. In other regions of the world, however, the blue and white Best Aquaculture Practices logo with its three stylised fish is much more widespread and is recognised as a symbol of socially responsible, sustainable and environmentally friendly fish and seafood products. What does the BAP seal stand for, has it earned the trust of consumers and should we be paying more attention to it?

EM2 21 AQ Aquafuture workflowEarly Sturgeon Sex Discrimination (ESSD), a new diagnostic service for hatcheries and farms

This article was featured in EUROFISH Magazine 2 2021.

Sturgeon farmers producing fish for caviar would benefit hugely from a molecular-biological sex test for juvenile and adolescent sturgeons. Early sexual identification can significantly decrease production costs by increasing the number of females for caviar production while maintaining a balance of male animals for meat production and for use as brood stock.
Additional advantages from the genomic analysis to determine sex could be the identification of genes implicated in growth, meat production, or egg quality (caviar) which opens the door for improvements in these areas. Currently, the normal male to female ratio in production facilities is approximately 1:1 through natural selection. If an early sex test is available, then this ratio could be manipulated to favour the production of either caviar or meat.

EM1 21 AQ FIAPA versatile and robust mechanical feeder

This article was featured in EUROFISH Magazine 1 / 2021.

A German company, FIAP offers a range of equipment for the aquaculture sector from sophisticated recirculation systems to hand-held nets.

An aquaculture farm whether on land or at sea is a rough environment and the equipment used needs to be tough and reliable if the farm is to operate successfully. FIAP’s Profifeed BeltFeeder is a mechanically driven automatic feeder that can be used in the most demanding environments to deliver feed or other inputs, such as medicines or additives, to the water. The material can take any form from dust to large pellets. The feeder is started manually and can be set to run for 4, 12, or 24 hours during which time it will steadily dispense the medium enabling extremely ef- ficient workflows.

EM1 21 AQ AlgaEuropeThis article was featured in EUROFISH Magazine 1 / 2021.

On a global scale European production of algae is very modest, but companies and research bodies find that algae can contribute to addressing important issues faced in Europe including sustainability, human and animal health, and plastic pollution. The positive role algae can play in these and other fields were among the topics discussed at the AlgaEurope conference.

The AlgaEurope conference is an annual event that brings together industry and academia involved in algae research, cultivation, and application to discuss the further development of the sector in Europe and beyond. The forum provides companies, established academics, budding scientists, and regional, national, and European policy-makers with an opportunity to network while exchanging knowledge and experience about algae. The conference is organised by the European Algae Biomass Association and DLG Benelux, part of the German Agriculture Society, DLG.

EM6 20 AQ MemshrimpPioneering cultivation of a new species

This article was featured in EUROFISH Magazine 6 / 2020.

A company in Turkey is growing whiteleg shrimp from imported broodstock. The experience and knowledge gained will be used to catalyse the development of a shrimp industry in the country.

Turkish catches of wild shrimp are dominated by deep-water rose shrimp (Parapenaeus longirostris). This species accounted for three quarters of the catch of shrimp, prawn and lobster in 2019 or 3,850 tonnes. In addition, the country imported 2,150 tonnes of shrimp in various forms. Shrimp are popular in Turkey which is why it is surprising, that despite an 8,000 km long coastline and a hugely successful aquaculture sector, shrimp farming has never established itself.

EM6 20 AQ AAC GAAmbitious programme of work for 2021

This article was featured in EUROFISH Magazine 6 / 2020.

The annual general assembly of the Aquaculture Advisory Council (AAC) in September this year was held online due to the pandemic. The virtual setting had, however, no impact on the level of debate which has characterised this organisation’s meetings. In his address, Virginius Sinkevičius, Commissioner for Environment, Oceans, and Fisheries, welcomed the advice and recommendations made by AAC for the Commission and the Member States to guide the development of sustainable aquaculture in Europe. He stressed that aquaculture as a low carbon source of high-quality protein plays a key role in meeting the objectives of EU strategies, including the European Green Deal, the Farm to Fork Strategy, and the Biodiversity Strategy.

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