Study

Dioxin and dioxin-like polychlorinated biphenyls (PCBs) in Scottish farmed salmon (Salmo salar): effects of replacement of dietary marine fish oil with vegetable oils

  • Published source details Bell J.G., McGhee F., Dick J.R. & Tocher D.R. (2005) Dioxin and dioxin-like polychlorinated biphenyls (PCBs) in Scottish farmed salmon (Salmo salar): effects of replacement of dietary marine fish oil with vegetable oils. Aquaculture, 243, 305-314

Actions

This study is summarised as evidence for the following.

Action Category

Use an alternative oil source: plant-based

Action Link
Sustainable Aquaculture
  1. Use an alternative oil source: plant-based

    Between 2000 and 2002, a replicated, controlled study  in Scotland (Bell et al., 2005) found salmon, Salmo salar, fed diets containing low fish oil, and low-high vegetable oil concentrations had lower levels of dioxin and polychlorinated biphenyls within flesh. This was in comparison to feeds containing high fish oil concentration. The highest dioxin and PCB flesh concentrations in salmon fed the high fish oil diet was 0.53 ng TEQ per kg and 1.48 ng TEQ per kg, respectively. The lowest dioxin and PCB flesh concentrations in salmon fed the high vegetable oil diet was 0.10 ng TEQ per kg and 0.58 ng TEQ per kg, respectively. Over 115 weeks, salmon were fed one of four diets comprised of low fish oil (17%), high fish oil (35%), low vegetable oil (17% linseed and rapeseed oil) and high vegetable oil (35% linseed and rapeseed oil).

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