title: Thin-layer chromatographic detection of ivermectin in cattle dung.
abstract: A qualitative method based on thin-layer chromatography (TLC) is described that reliably detects ivermectin as a fluorescent derivative in extracts of cattle dung. The limit of detection (LOD) was < or = 40 ng/g of wet dung. These observations were statistically documented and shown visually using digital imagery. Residues were detected in fresh dung deposited by animals treated 10 days previously with a topical dose (500 microg/kg body weight) of ivermectin.
authors.affiliation: Research Centre, Agriculture and Agri-Food Canada, Lethbridge, Alb.
authors.forename: K D
authors.initials: KD
authors.lastname: Floate
authors.forename: W G
authors.initials: WG
authors.lastname: Taylor
authors.forename: R W
authors.initials: RW
authors.lastname: Spooner
mesh_terms: D000818:Animals; D000969:Antinematodal Agents / Q000032:analysis*; D002417:Cattle / Q000378:metabolism*; D002855:Chromatography, Thin Layer; D005243:Feces / Q000737:chemistry*; D007559:Ivermectin / Q000032:analysis*; D012680:Sensitivity and Specificity; D019155:Veterinary Drugs / Q000032:analysis*
chemical_list: D000969:Antinematodal Agents; D019155:Veterinary Drugs; D007559:Ivermectin