ALLER FLOW is a new feed for Atlantic salmon in Recirculating Aquaculture Systems (RAS) developed by Aller Aqua. The feed is optimized for performance in terms of water quality and healthy fast-growing fish.

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

Following the increasing trend of large-scale production of Atlantic salmon in RAS across the world, Aller Aqua introduced ALLER FLOW as the best choice for farming Atlantic salmon in this sophisticated environment. Thoroughly tested and developed at the trial station at Aller Aqua Research in Buesum, Germany, ALLER FLOW was created considering the impact of the feed on the entire production system while 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 by no less than four percent in Atlantic salmon fed ALLER FLOW compared to a competing RAS feed. That is a huge difference when producing several thousand tons of salmon! We have also significantly improved the feces structure from fish fed ALLER FLOW compared to a competing RAS feed, meaning that the more compact and stable feces are, the more efficiently transported through and removed from the system by filtration units are. This will make a big difference for the efficiency of the RAS as well as the economic result,” explained Robert Tillner, product manager at Aller Aqua.

Feces particle dispersion and harvest after 45 seconds in ALLER FLOW (left: 90% harvest) compared to a competing RAS feed (right: 60% harvest).

The new feed is the newest member of the recently launched POWER^RAS concept and contains no animal byproducts and is available in 3 and 4.5 mm.