July 6, 2020


Aller Aqua launches new feed for RAS-based Atlantic salmon



Aller Aqua has announced Aller Flow, a new feed for Atlantic salmon farmed at recirculating aquaculture systems (RAS).


The feed is optimised for performance in terms of excellent water quality and healthy fast-growing fish. 


The production of Atlantic salmon in RAS is gaining popularity across the globe with steadily rising production volumes each year, said Aller Aqua. While technically advanced and requiring large investments, RAS also requires highly sophisticated and advanced fish feeds. 


Following the increasing trend of large-scale RAS production of Atlantic salmon, Aller Aqua introduced Aller Flow as the best choice for farming the fish in this sophisticated environment. Thoroughly tested and developed at the trial station at Aller Aqua Research in Buesum, Germany, Aller Flow is created with the consideration of the impact of the feed on the entire production system whilst maintaining focus on fish health and growth. 


"Aller Flow has been developed to enable the highest feed efficiency, not only in terms of growth but also feed conversion. Every digit in improved feed conversion means fewer nutrients to be handled by energy-consuming filtration units in RAS. Keeping this in mind, we were able to improve the FCR (feed conversion rate) by no less than 4% in Atlantic salmon fed Aller Flow compared to a competing RAS feed," explained Dr. Robert Tillner, product manager at Aller Aqua.


"That is a huge difference when producing several thousand tonnes of salmon. We have also significantly improved the faeces structure from fish fed Aller Flow compared to a competing RAS feed, meaning that the more compact and stable faeces are efficiently transported through and removed from the system by filtration units. This will make a big difference for the efficiency of the RAS as well as the economic result."


Aller Flow is the newest member of the recently launched POWERRAS concept. It contains no animal by-products and is available in sizes 3mm and 4.5mm.


- Aller Aqua