A showcase for sustainable French aquaculture
The result of more than a year’s work, the Langolen fish farm embodies the new model that Maïsadour wants to deploy: efficient, responsible and exemplary in environmental and health terms.
The site now operates in a closed circuit thanks to multi-stage biofiltration of the water, a technology that is unprecedented on an industrial scale in the field of aquaculture in France, greatly limiting the environmental impact while ensuring optimum living conditions for the fish.
The site’s environmental commitment is also reflected in the deployment of 6,000 m² of photovoltaic shading, covering the entire facility. The first section, already in service, provides 100% of the site’s self-consumption needs. A second section will be installed by the end of the year, and the surplus will be fed into the grid, contributing to the local energy transition.
In terms of animal welfare, the design of the ponds themselves (shaded, optimised water circulation, natural current stimulation) recreates conditions close to the natural environment, promoting the health and growth of the fish in a setting that respects their life cycle.
This innovative model now enables Langolen to produce more than 600 tonnes of trout a year (compared with 100 tonnes before the work, in an open circuit).
‘This project is directly in line with our AMBiTiON 2030 strategy and illustrates our ability to bring together technological innovation, ecological sustainability, animal welfare and economic competitiveness.’
A strategic sector for the future of French food
With close links to the production site in Castets (Landes), where the fish is processed under the Delmas and Delpeyrat brands, Langolen is fully integrated into a local ‘from egg to plate’ supply chain. With 110 employees, Maïsadour’s aquaculture sector is supported by 3 fish farms and 1 processing site.
As a cooperative committed to the food transition, Maïsadour intends to use its aquaculture industry as a lever for regional economic development and sustainable re-industrialisation. This link between farming and processing strengthens France’s food sovereignty, while promoting short distribution channels and local production.
