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Extension

A black cow stands beside a black calf in a sunlit grassy field. Both face the camera, and each has a colored ear tag.
New World screwworm, pasture mealybug and Bovine Theileriosis will be among the topics discussed at this fall’s Ranchers’ Thursday Lunchtime Series. (Photo by Mitchell Alcala, OSU Agriculture)

OSU Extension providing free webinars on emerging livestock diseases and pests

Tuesday, August 25, 2026

Media Contact: Dean Ruhl | Communications & Media Relations Specialist | 405-744-9152 | dean.ruhl@okstate.edu

The Oklahoma State University Extension Ranchers’ Thursday Lunchtime Series of webinars returns this fall, focusing on animal health challenges facing the livestock industry, like New World screwworm, pasture mealybug and Bovine Theileriosis.

The weekly series is free to the public, but registration is required for each event. Questions and feedback are encouraged. All webinars will begin at noon and end at 1 p.m.

The following sessions will be held over the next month:

Aug. 27 – New World screwworm: Animal health official update

  • Sara Ahola, USDA (APHIS), New World screwworm national incident coordinator, and Rod Hall, Oklahoma Department of Agriculture, Food and Forestry state veterinarian.

Sept. 3 – New World screwworm treatments and economic impacts

  • Jonathan Cammack, OSU Extension livestock entomology and parasitology specialist, and Amy Hagerman, OSU Extension agriculture and food policy specialist.

Sept. 10 - Bovine Theileriosis in Oklahoma: Current status and prevention

  • Ruth Scimeca, assistant professor for veterinary pathobiology, OSU.

Sept. 17 – Theileria Orientalis Genotype Ikeda: Approaches from the field

  • John Currin, Virginia Tech Extension veterinarian.

Sept. 24 – Pasture mealybug: What producers need to know

  • Ashleigh Faris, OSU Extension IPM coordinator and cropping systems entomologist.

Previous Zoom sessions can be found on the Ranchers’ Thursday Lunchtime Series website.

For additional information, contact David Lalman, OSU Extension beef cattle specialist, at david.lalman@okstate.edu or 405-744-6060.