Fishmeal, fish oil and 'The Need for Feed'

摘要

It is stating the obvious to say that the use of fishmeal and fish oil in aquafeeds has changed over time. With high inclusion rates of fishmeal and fish oil common in early modern aquafeeds, and especially those for salmonids, these materials could be regarded as the foundation of fed aquaculture as we know it (Auchterlonie, 2016). The provision of diets that met the farmed fish nutritional needs essentially freed up the industry to develop systems technology and health controls therefore making theadvances in the volume of production that was required to achieve viability.Inclusion rates seen with those early diets were 90 percent or more for total marine-sourced materials (Ytrest0yl, Aas, & Asgard, 2015), and this was only feasible when the aquaculture industry was of relatively small volume. Over time the partial substitution of marine ingredients with those of other (terrestrial, mainly vegetable but some animal proteins) origin occurred to allow a continuing supply of feed to aquaculture within a global market. The challenge was in meeting the volume of supply required for the developing aquaculture industry.