ODA Animal Disease Diagnostic Laboratory


Necropsies are primarily of food production animals (cattle, swine, sheep, goats) and poultry (turkeys, chickens), with fewer horses, dogs, cats and miscellaneous animals (few exotic animals, deer and other wildlife, camelids and pet birds).

The necropsy suite includes overhead monorail with two 2-ton hoists, two stainless steel hydraulic tables, holding pens and cages, coolers to store animals/infectious wastes, and a fume hood for histopathology tissue trimming. Personal protective equipment includes surgical scrubs, coveralls, lab coats, disposable gloves, aprons and surgical masks and hats, eye goggles and face shields, and Kevlar gloves. Dual headed Olympus and Zeiss microscopes are available for dual viewing of microscope slides. There are multiple computers in the section with access to the laboratory database, email and the internet.


Associated Veterinarians and special expertise available

  • Jeff Hayes, DVM, MS – Pathology Section Head, 28 years laboratory experience
  • Craig Sarver, DVM, MS – Diagnostician at ADDL for 22+ years
  • David Newman, DVM – Veterinary pathologist, 3+ years experience
  • Alex Hamberg, VMD, PhD – Veterinary pathologist, ACVP board eligible
  • Yan Zhang, DVM, PhD, DACVM - Virologist
  • Jing Cui, DVM, MS – Microbiologist
  • Bev Byrum, DVM, PhD – Laboratory director

Educational Resources

  • Full access to all texts and journals kept in the library or owned by the pathologists
  • Journals: JAVMA, AJVR (30 years each), Veterinary Pathology, Journal of Veterinary Internal Medicine, JVDI (of AAVLD), Avian Diseases, Compendium of Continuing Education, Veterinary Medicine and various trade journals
  • Internet access and email


The student will participate in the performing of necropsies on animals and birds presented to the ADDL for diagnosis. The student will assist the veterinary pathologist/diagnostician on duty each day, and they will be present during client interviews to obtain case histories prior to performing post-mortem examinations. The student will be able to observe microscopic slides of tissues for histopathology of case material through a 2-headed microscope with the pathologist. The student will also be able to observe activities in other lab sections, such as bacteriology, virology and serology. The student can expect to see 20-25 necropsies per week and a similar number of accessions received by mail.

Students in this program will have to sign a waiver of liability approved by ODA legal counsel. Students will also need to have documentation of a protective titer against rabies and of tetanus immunization.

Student Supervision

At least 4 hours per day – the student will be assigned to assist the pathologist or diagnostician on duty each day.



Practice Information

Animal Disease Diagnostic Laboratory
8995 East Main Street
Ohio Department of Agriculture/Division of Animal Industry
Reynoldsburg, OH 43068

Ph: (614) 728-6220
Fx: (614) 728-6310

Email: jhayes [at] agri [dot] ohio [dot] gov; mmaynard [at] agri [dot] ohio [dot] gov
Website: www.ohioagriculture.gov

Updated: 09/28/11
Signature on file: Dr. Jeff Hayes