Ivermectin use and resulting milk residues on 4 Canadian dairy herds.
The Canadian gFARAD was contacted for milk withdrawal recommendations after multiple cases of topical ivermectin use in lactating dairy cows. The following 4 cases included pertinent milk residue information and illustrate the challenges faced by producers, veterinarians, and regulatory authorities when ivermectin use occurs in dairy cows.
Chicoine
Alan L
AL
Canadian gFARAD, Western College of Veterinary Medicine, University of Saskatchewan, 52 Campus Drive, Saskatoon, Saskatchewan S7N 5B4. al.chicoine@usask.ca
Durden
David A
DA
MacNaughton
George
G
Dowling
Patricia M
PM
D000818:Animals; D002417:Cattle / Q000378:metabolism*; D003257:Consumer Product Safety; D004350:Drug Residues / Q000032:analysis*; D005260:Female; D006801:Humans; D007306:Insecticides / Q000493:pharmacokinetics* / Q000627:therapeutic use; D007559:Ivermectin / Q000493:pharmacokinetics* / Q000627:therapeutic use; D008892:Milk / Q000737:chemistry* / Q000592:standards; D013997:Time Factors