AquAdvantage salmon is a genetically modified (GM) Atlantic salmon developed by AquaBounty Technologies. A growth hormone-regulating gene from a Pacific Chinook salmon, with a promoter from an ocean pout, was added to the Atlantic salmon’s 40,000 genes. This gene enables it to grow year-round instead of only during spring and summer. The purpose of the modifications is to increase the speed at which the fish grows without affecting its ultimate size or other qualities. The fish grows to market size in 16 to 18 months rather than three years. The latter figure refers to varieties whose growth rate has already been improved by 2:1 as a result of traditional selective breeding. Conventional salmon growers publicly challenged the claimed growth rates.
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