Farmed fish will soon surpass caught fish in the supply of fish for global human consumption. A report from the Food and Agriculture Organization of the United Nation (FAO), ‘The state of world fisheries and aquaculture 2016’, projected total world fishery production (capture plus aquaculture) to reach 196 million tonnes by 2025. Of that, the report estimates 102 million tonnes will come from aquaculture.
The same report noted that while aquaculture will remain one of the fastest-growing sectors for animal food production, its annual growth rate is slowing. One factor is availability of fish feeds in the requisite quality and quantity.
To produce the omega-3 oils that make fatty fish particularly healthy, farmed fish species, including salmon, are fed rations that include fish oil from wild-caught fish. As an alternative, Cargill has announced the launch of Latitude, a canola-based source of long-chain eicosapentaenoic acid (EPA), docosapentaenoic acid (DPA) and docosahexaenoic acid (DHA) omega-3 fatty acids for aquafeed.
Latitude can provide the predictable quality and quantity that fish farmers need, reducing the dependency on marine ingredients, including forage fish.
“The growth in aquaculture production brings an increase in demand for omega-3s,” said Willie Loh, vice president of market development for Cargill’s global edible oils business. “Latitude will help relieve some of the pressure on wild caught fish, while delivering a reliable omega-3 product to aquafeed manufacturers – a win-win for the industry.”
Cargill says the functional elements of Latitude meet aquaculture requirements. “Fresh and saltwater feed trials have shown that 100 percent of fish oil can be replaced with Latitude in commercial salmon feed with no effect on fish growth rates, fish health or fillet omega-3 content,” the company says.
The primary market for Latitude is salmon farming, which is concentrated in Chile and Canada. Latitude was launched at AquaSur, one of the largest aquaculture events in the world, in Chile in October. Salmon feed manufacturers in Chile and Canada will be able to purchase Latitude after its commercial launch, planned for 2020.
Canola used to produce Latitude is currently grown in Montana. Cargill could expand production to new areas as demand increases, but the specialty crop will likely have to remain in areas that don’t have large acres of commercial canola. In a November 2017 Canola Digest article on new specialty canola traits, Loh said: “What we don’t want to do is have pollen potentially contaminate any other canola crop. We don’t want to contaminate the mainstream canola crop, and frankly we don’t want the mainstream canola crop to contaminate our omega-3 oil.”