Biological hazard analysis and biosecurity assessments for feed manufacturing and distribution in the swine feed supply chain

摘要

The role of contaminated feed in the transmission of porcine epidemic diarrhea virus (PEDV) has been speculated since its emergence in the USA in April 2013.' The emergence of PEDV in Canada, in January 2014, further intensified the industry focus upon ingredients of porcine origin as a potential source of swine feed contamination and a pathway for disease transmission. Although it is imperative that the biological risks associated with feed ingredients of porcine (i.e. rendered, spray dried, and hydrolyzed products) and non-porcine (i.e. non porcine animals, plants, microbial culture, mining, and synthetic) origin should be estimated, it is also critical that the risk of biological contamination during the feed manufacturing and distribution phases of the swine feed supply chain be assessed, estimated, and managed.