Detection of Prohibited Animal Products in Livestock Feeds by Single-Strand Conformation Polymorphism Analysis
Abstract:Single-strand conformation polymorphism (SSCP) analysis of amplicons produced from a mitochondrial DNA region between the tRNA Lys and ATPase8 genes was applied for the detection of animal product within livestock feeds. Identification of prohibited animal (cattle, elk, sheep, deer, and goat) and nonprohibited animal (pig and horse) products from North America was possible based on the differential display of the single-stranded DNA fragments for the different animal species on SSCP gels. This method allowed specific detection and identification of mixed genomic DNA from different animal species. Trace amounts of cattle-derived materials were also detected in pig meat and bone meal and in grain-based feeds fortified with 10, 5, 1, or 0% porcine meat and bone meal. This study demonstrates the applicability of SSCP analyses to successfully identify the origin of animal species derived materials potentially present in animal feeds.
Document Type: Research Article
Affiliations: 1: Centre for Food-borne and Animal Parasitology, Canadian Food Inspection Agency, Saskatoon, Saskatchewan, Canada S7N 2R3 2: Ottawa Laboratory (Carling), Canadian Food Inspection Agency, Ottawa, Ontario, Canada K1A OC6 3: Department of Biology, University of Saskatchewan, Saskatoon, Saskatchewan, Canada S7N 5E2
Publication date: January 1, 2010
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