Charles Estill

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Extension Veterinarian

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541-737-7667
[email protected]

Department/Unit: Animal and Rangeland Sciences

Content by Charles Estill

Livestock disease traceability programs

Livestock diseases are best dealt with at the preventive stage. This collection includes links to proactive programs for several livestock species and specific diseases that are available to help with tracing diseases and preventing their spread, as well as continuity of business during an outbreak.

Shelby Filley, Sergio Arispe, Jenifer Cruickshank, David Bohnert, Charles Estill, Juliana Ranches | Apr 2024 | Collection

Over-the-counter sale of livestock antibiotics ended June 11, 2023

Federal rules in 2023 end the over-the-counter sale of some livestock antibiotics. You will need prescriptions from a veterinarian to treat your animals.

Charles Estill | Mar 2023 | OSU Extension Catalog

Beef Cow-Calf Management Guide

Raising cattle for profit requires a detailed management plan that sets production goals and timelines days, weeks and even years in advance. These guidelines for health, nutrition and reproductive management will help beef cattle producers make critical decisions.

Scott Duggan, Gene Pirelli, Charles Estill, Juliana Ranches, Dale W. Weber | Aug 2021 | OSU Extension Catalog

Is this a bot fly larvae?

P: I found a cuterebra larva on my bathroom floor today. Freaky! So after watching them get pulled out of cats' noses they have my full attention! I have two cats and a dog that don't show any symptoms. Did it fall out ...

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Calving School Handbook (in English)

This handbook focuses on the calving process, illustrating and explaining the mechanisms associated with this event, in addition to providing information and management options to alleviate the incidence of calving difficulties.

Charles Estill, Aurora Villarroel, Reinaldo Cooke | Oct 2018 | Online resource

The Veterinary Feed Directive: Questions and answers for Oregon livestock producers

Oregon livestock producers must comply with the Veterinary Feed Directive, which affects how they use feed-grade antibiotics. This publication outlines regulations and responsibilities.

Sergio Arispe, Charles Estill, Troy Downing | Jan 2025 | OSU Extension Catalog

Porcine epidemic diarrhea virus poses deadly threat to piglets

The porcine epidemic diarrhea virus was confirmed to have spread to Oregon in 2016 after being first detected in the US in 2013. The virus largely affects young piglets and has a mortality rate as high as 100 percent.

Charles Estill, Gene Pirelli, Brad R. LeaMaster | Jan 2016 | OSU Extension Catalog

Is beef with liver flukes safe to eat?

P: I'm in the process of buying some grassfed beef through an Oregon coast farmer on Craigslist. The beef was recently processed and is ready to pick up, however we won't be getting any liver as the cows had liver flukes. ...

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