Tracking pollutants in dietary fish oil: from ocean to table.

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dc.contributor.authorSheng-Xiang, Sun
dc.contributor.authorXue-Ming, Hua
dc.contributor.authorYun-Yun, Deng
dc.contributor.authorYun-Ni, Zhang
dc.contributor.authorJia-Min, Li
dc.contributor.authorZhao, Wu
dc.contributor.authorSamwel Mchele Limbu
dc.contributor.authorDa-Sheng, Lu
dc.contributor.authorHao-Wen, Yin
dc.contributor.authorGuo-Quan, Wang
dc.contributor.authorRune, Waagbø
dc.contributor.authorFrøyland, Livar
dc.contributor.authorMei-Ling, Zhang
dc.contributor.authorZhen-Yu, Du
dc.date.accessioned2019-05-07T14:21:32Z
dc.date.available2019-05-07T14:21:32Z
dc.date.issued2018-05-16
dc.description.abstractDietary fish oil used in aquafeed transfers marine pollutants to farmed fish. However, the entire transfer route of marine pollutants in dietary fish oil from ocean to table fish has not been tracked quantitatively. To track the entire transfer route of marine pollutants from wild fish to farmed fish through dietary fish oil and evaluate the related human health risks, we obtained crude and refined fish oils originating from the same batch of wild ocean anchovy and prepared fish oil-containing purified aquafeeds to feed omnivorous lean Nile tilapia and carnivorous fatty yellow catfish for eight weeks. The potential human health risk of consumption of these fish was evaluated. Marine persistent organic pollutants (POPs) were concentrated in fish oil, but were largely removed by the refining process, particularly dioxins and polychlorinated biphenyls (PCBs). The differences in the POP concentrations between crude and refined fish oils were retained in the fillets of the farmed fish. Fillets fat content and fish growth were positively and negatively correlated to the final POPs deposition in fillets, respectively. The retention rates of marine POPs in the final fillets through fish oil-contained aquafeeds were 1.3%–5.2%, and were correlated with the POPs concentrations in feeds and fillets, feed utilization and carcass ratios. The dietary crude fish oil-contained aquafeeds are a higher hazard ratio to consumers. Prohibiting the use of crude fish oil in aquafeed and improving growth and feed efficiency in farmed fish are promising strategies to reduce health risks originating from marine POPs.en_US
dc.description.sponsorshipThe Fundamental Research Funds for the Central Universities of Chinaen_US
dc.identifier.doihttps://doi.org/10.1016/j.envpol.2018.05.027
dc.identifier.urihttp://hdl.handle.net/20.500.11810/5224
dc.publisherElsevieren_US
dc.subjectMarine pollutantsen_US
dc.subjectDietary fish oilen_US
dc.subjectAquafeedsen_US
dc.subjectFarmed fishen_US
dc.subjectHealth risken_US
dc.subjectPollutant transfer routeen_US
dc.titleTracking pollutants in dietary fish oil: from ocean to table.en_US
dc.typeJournal Article, Peer Revieweden_US
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