Horses

Horse/Equine Biosecurity Overview

The risk of disease in equine species of animals is real. As a person involved in the equine industry, you are probably aware of the common diseases that could affect your animals. Different levels of susceptibility to diseases exist among the animals you have on your farm. For instance, a stressed horse may be more susceptible than an unstressed horse, a foal more than a mare, a vaccinated horse more than an unvaccinated horse, etc.

Implementation of sound biosecurity procedures will reduce the chance of the spread of a disease among the different groups of animals within the farm, and it will also reduce the chance of a disease being brought to your farm.

A disease may be present on a neighbor's farm or on another farm in your county or in another state, and biosecurity is the only way to prevent the disease from entering your facility.

Remember that the diseases you intend to keep out of your farm can be spread in many different ways. These methods of disease transmission include:

  • Fecal to oral transmission.
  • Fomite transmission, by inanimate objects (such as footwear, gloves, and tires) capable of carrying a pathogen (disease agent) from one animal to another.
  • Vector transmission, in which a living thing (such as a mosquito) carries a pathogen.
  • Nose-to-nose transmission, directly between animals.
  • Airborne transmission.

The goal of biosecurity procedures is to reduce the risk of pathogens from reaching your animals. An overriding concept is that there's no way to tell if a pathogen is being carried by a visitor, animal, or vehicle, so biosecurity rules must apply to all of them, all the time.

For instance, a new animal introduced to your farm may be covertly incubating a disease. Without an appropriate quarantine you will placing your animals at an increased risk of becoming infected with this disease. It is also important to appreciate that clinically affected animals may represent only the "tip of the iceberg," with a much larger number oi animals in a subclinical disease state that are not exhibiting clinical signs of the disease.

Developing a biosecurity plan is an important part of maintaining the health of the animals on your farm and in the equine industry. On the next page there is a list of biosecurity measures that are categorized under general headings. Hopefully you practice many of these biosecurity measures already and recognize their importance. These measures are meant as a guide only and may not be practical on your farm or may be too expensive to implement. However, we hope to convey the importance of the basic principles of biosecurity to you and you become more aware of the risks to you and your animals.

Management Strategies


Equine Biosecurity Content Source
Choueke, Esmond. 2015. Agroterrorism Prevention Reference Guide (FBI). Boca Publications Group Inc. bocagroup@gmail.com

Equine Biosecurity Resources


What is Biosecurity

Resources that are specific to common situations to help you keep your horse safe, happy and healthy, from the Equine Disease Communication Center. Biosecurity for breeding operations, racetracks and other operations.

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Disease Outbreak Alerts

National alerts for equine diseases. Updates on current disease outbreaks are listed as they occur and include the date listed, disease name, location and current status.

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Barn Smarts for Biosecurity

By making several simple horse care changes, you can significantly decrease your horse’s risks of exposure to disease. A printable PDF from the University of Arizona Extension.

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List of Equine Diseases

Equine includes horses, ponies, mules, burros and donkeys. From the Center for Food Security and Public Health, 57 diseases are listed with descriptions and images.

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Infectious Disease Guidelines

From the American Association of Equine Practitioners, printable PDFs for each disease includes clinical signs, risk factors, biosecurity for receiving animals and more.

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4-H Horse Events and Biosecurity

A downloadable template for 4-H with a sheet for monitoring a horse’s temperature after events. From North Dakota 4-H & Youth Development.

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