Development and Model Testing of Antemortem Screening Methodology To Predict Required Drug Withholds in Heifers
| Autor: | Karen Shuck, Dee Griffin, Marilyn J. Schneider, Julio Quintana, Paul Rapnicki, James E. Wells, Shuna A Jones, Robert S. Salter, Timothy Goldsmith |
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| Rok vydání: | 2014 |
| Předmět: |
Drug
Flunixin media_common.quotation_subject Sulfadimethoxine Withdrawal time Urine Pharmacology Kidney beta-Lactams Microbiology High-performance liquid chromatography Animals Medicine Sampling (medicine) Chromatography High Pressure Liquid media_common Chromatography business.industry Drug Residues Anti-Bacterial Agents Cephalosporins Clonixin Liver Cattle Female business Ceftiofur Food Science medicine.drug |
| Zdroj: | Journal of Food Protection. 77:292-298 |
| ISSN: | 0362-028X |
| DOI: | 10.4315/0362-028x.jfp-13-267 |
| Popis: | A simple, cow-side test for the presence of drug residues in live animal fluids would provide useful information for tissue drug residue avoidance programs. This work describes adaptation and evaluation of rapid screening tests to detect drug residues in serum and urine. Medicated heifers had urine, serum, and tissue biopsy samples taken while on drug treatment. Samples were tested by rapid methods and high-performance liquid chromatography (HPLC). The adapted microbial inhibition method, kidney inhibition swab test, was useful in detecting sulfadimethoxine in serum, and its response correlated with the prescribed withdrawal time for the drug, 5 to 6 days posttreatment. The lateral flow screening method for flunixin and beta-lactams, adapted for urine, was useful in predicting flunixin in liver detected by HPLC, 96 h posttreatment. The same adapted methods were not useful to detect ceftiofur in serum or urine due to a lack of sensitivity at the levels of interest. These antemortem screening test studies demonstrated that the method selected, and the sampling matrix chosen (urine or serum), will depend on the drug used and should be based on animal treatment history if available. The live animal tests demonstrated the potential for verification that an individual animal is free of drug residues before sale for human consumption. |
| Databáze: | OpenAIRE |
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