Rainbow trout
Worldwide
Raceways (flow-through system), Pond systems, Net pens/ Cages
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The largest part of farmed trout is produced in flow-throughFlow-through:
A cultivation technique whereby water is led from a higher point to the cultivation basin. From here it flows to the drainage. This water must be cleaned thoroughly, otherwise it may have negative impacts on the environment. systems, recirculationRecirculation systems:
An environmentally friendly cultivating system completely locked from the natural environment, wastewater is purified and re-used and the system is well controlled. systems and [ponds]. A small part is farmed in cagesCages:
A cultivation technique with open cages in the sea, lake or river. They are anchored to the bottom and are standing in places sheltered for storm and high waves. Most salmon is grown in this type of culture system. Because the cages are in open connection with the surrounding water, the impact on the environment is high. at sea, this production method is growing.
The content of fish meal and fish oil in the feed for trout is quite high. More than 2 kg wild-caught fish needed to grow 1 kg trout. The feed itself is also often not sustainable because is consists of ingredients that are not caught or produced in a sustainable way.
ASCASC:
Aquaculture Stewardship Council, a worldwide eco-label for responsible cultivated fish. trout is available since 2014. This certification not only ensures that the feed is becoming more sustainable, but also that measures are taken to limit the negative environmental impacts.
These measures are maintained by strict independent audits on the farms. to which the farms are subject. ASC trout is therefore trout that is produced in a responsible manner with respect for the environment and society.
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