Source: Stockxchng

Following on from the previous post, here is some more information on the use of fishmeal and fish oil in feeds.

The article Fish in – Fish out Ratios Explained, by Andrew Jackson, published in Aquaculture Europe Vol. 34 (3) September 2009, has been added to the Envirofinfish Library.

“One of the long continued debates in aquaculture is the use of fishmeal and fish oil in feeds and the amount of wild fish it takes to produce farmed fish.  This debate has particularly raged around the use of fish oil and fish meal in salmon diets and a lot of different figures have been quoted for the number of tonnes of wild fish it takes to produce a tonne of farmed salmon (FIFO ratio).  These quoted figures range from 3:1 to 10:1; the most recent figure published comes from Tacon & Metian (2008) who gave the figure for salmon in 2006 as 4.9:1, meaning it takes 4.9 tonnes of wild fish to produce 1 tonne of salmon.”

Click here to read more by viewing the whole article.  The document is also available from the Library menu.