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Chronic Wasting Disease (CWD) Program: Protecting Livestock in Oklahoma

Learn about Chronic Wasting Disease, its transmission, diagnosis, and the CWD Program in Oklahoma ensuring stringent sample collection. Get insights on the future of the program and the importance of accredited veterinarians.

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Chronic Wasting Disease (CWD) Program: Protecting Livestock in Oklahoma

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  1. Chronic Wasting Disease (CWD) Sample Collection Interim Study Justin Roach, DVM Rod Hall, DVM Oklahoma Department of Agriculture, Food & Forestry Animal Industry Services October 18, 2012

  2. Disease Description • Transmissible Spongiform Encephalopathy of cervidae species • Transmission routes from multiple bodily fluids • Long incubation periods • Clinical Signs: Progressive weight loss, neurological abnormalities, behavorial changes, excessive drinking & urination, profuse salivation • Invariably fatal

  3. CWD Distribution in Wild Cervidae

  4. Distribution in Captive Cervidae

  5. Chronic Wasting Disease Herd Certification Program • Voluntary Program • Participation is Free of Charge • Required by Federal Code to participate in interstate commerce • Participants must have all deaths over 12 months of age sampled and tested for CWD • In Oklahoma sampling can only be performed by accredited veterinarians • Federal code allows states to determine who is eligible to perform sampling

  6. CWD Diagnostics • No antemortem tests available • Immunohistochemistry of obex and medial retropharyngeal lymph nodes • Obex is the best sample for clinical animals • MRPLNs are more critical in pre-clinical diagnosis

  7. Obex Collection Video

  8. Medial Retropharyngeal Lymph Nodes Collection Video

  9. FUTURE OF CWD PROGRAM • Our job is to protect the livestock and public of Oklahoma and assist our livestock producers to be as successful as possible

  10. FUTURE OF CWD PROGRAM • Federal regulations were suspended in 2006 • For the past 6 years ODAFF has set regulations based on the general guidance of the suspended Federal rules

  11. FUTURE OF CWD PROGRAM • We have tried to help our producers while maintaining standards that enable our producers to sell cervids to other states • New Federal rule went into effect 8/7/2012

  12. FUTURE OF CWD PROGRAM • Federal oversight of the program will be much more strict now • Oklahoma will be in provisional status for the first year of the review process • If Oklahoma does not achieve and maintain Consistent State Status our producers will not be able to sell deer to other states

  13. FUTURE OF CWD PROGRAM • The expertise required to collect Medial Retropharyngeal Lymph Nodes is greater than just collecting the brain stem • Any test eligible animals not sampled properly may require 2 animals to be sampled in the next year • We have required Accredited veterinarians to take these samples

  14. FUTURE OF CWD PROGRAM • Accredited veterinarians have special training to represent ODAFF and USDA in regulatory programs • They have helped us eradicate brucellosis, hog cholera, foot and mouth disease, and others • If producers are legally approved to take samples they must be approved by ODAFF by demonstrating sampling competancy

  15. Questions?

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