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Inhibitor Testing in Ontario

Inhibitor Testing in Ontario. Ontario Association of Bovine Practitioners November 17, 2011. Inhibitor Testing in Ontario. Background Producer Penalties Changes to Inhibitor Testing Message to Producers. Roles & Responsibilities. OMAFRA Regulatory Testing DFO

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Inhibitor Testing in Ontario

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  1. Inhibitor Testing in Ontario Ontario Association of Bovine Practitioners November 17, 2011

  2. Inhibitor Testing in Ontario • Background • Producer Penalties • Changes to Inhibitor Testing • Message to Producers

  3. Roles & Responsibilities • OMAFRA • Regulatory Testing • DFO • Designated competent authority • Assess losses, costs, penalties • Ontario Dairy Council (processors) • Screen loads before unloading • All three groups involved in testing decisions

  4. Pre-November 2011Inhibitor Testing Program • Regulatory Testing • One Bulk Tank sample / mo. • U of G. Agri-Food Lab • Load Screening • All loads tested before unloading • Rapid tests performed by processors

  5. Producer Penalties • Regulatory Testing • Screened on modified Delvo, confirmed on: Disc Assay, HPLC Sulfamethazine, LCMS-MS • $6, $9 or $12/hl penalty, shut-off for 2nd in 12 mo. • Load Screening • Beta-lactams, Sulphas, Tetracylines • Suspect positive loads dumped • Trace back to producer samples • Penalties, load costs, if producer and load samples are positive

  6. Upcoming Changes to Inhibitor Testing • Regulatory Testing • Shift to “surveillance” testing • Testing based on known or suspected risk • e.g. macrolides (Pursue) • Load Screening • Increased testing at plants by DFO & OMAFRA • Processor results confirmed using approved confirmatory (rapid) test • Increased chance of penalties, and even higher chance of assessement of losses and costs

  7. Upcoming Changes to Inhibitor Testing Approved Rapid Tests for Plants / Confirmation • Charm • ROSA 3 SL3 B-Lactam • ROSA Sulpha • ROSA Tetracycline • Idexx • SNAP B-Lactam • Plants can choose from above and may also use: • Charm SL6, IDEXX Sulfa and Tetracycline • DFO pays for tests • Screening results confirmed using same test or one of approved confirmatory tests

  8. Upcoming Changes to Inhibitor Testing Sensitivity of Approved Rapid Tests

  9. Message to Producers – from Vets • Inhibitor testing will test for more drug families • Follow labels for withdrawal of milk and meat. • Follow prescription for withdrawal of milk and meat when using antibiotics off-label. • Have access to rapid tests for drugs used

  10. Questions? Marc Lazenby Manager, Policies & Regulatory Affairs mlazenby@milk.org 905-817-2122

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