Study: Not All Biosecurity Protocols Effective

Researchers say not all biosecurity protocols owners use will protect horses from infectious diseases.
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Ringing in 2013 brought not only a string of broken New Year’s resolutions but also a wave of equine herpesvirus outbreaks throughout the United States, highlighting the importance of biosecurity to help stop the spread of infection. But according to New Zealand researchers, while most horse owners are using biosecurity measures to protect their animals, the protocols used are unlikely to protect horses against infectious diseases.

“The implementation of biosecurity practices on a farm can be the difference between an infectious disease outbreak and maintaining the health/welfare of the herd,” explained Sarah Rosanowski, a PhD candidate at Massey University’s Institute of Veterinary, Animal, and Biomedical Sciences.

As part of a larger research project to develop control strategies for equine influenza, Rosanowski and colleagues collected data on biosecurity practices used on 660 farms. Key findings of the study were:

  • 95% of the farms had at least one biosecurity practice for arriving horses, such as obtaining vaccine or deworming history, assessing gait/lameness, checking for signs of disease, and calling a veterinarian to examine horses with overt signs of illness;
  • Only 31% of farms isolated new horses for more than four days;
  • Few farms reported checking for clinical signs of infection, such as fever, in new horses; and
  • One-third of farms had biosecurity protocols (e.g., changing clothing, hand or boot washing) in place for visiting professionals, such as dentists, farriers, riding instructors, and veterinarians (visiting professionals could act as a vector for disease spread between properties, as they can visit many properties in a day or week).

“Overall, few of the biosecurity practices used on noncommercial horse properties would be effective at identifying disease or stopping the spread of disease to resident horses,” Rosanowski explained

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Written by:

Stacey Oke, MSc, DVM, is a practicing veterinarian and freelance medical writer and editor. She is interested in both large and small animals, as well as complementary and alternative medicine. Since 2005, she’s worked as a research consultant for nutritional supplement companies, assisted physicians and veterinarians in publishing research articles and textbooks, and written for a number of educational magazines and websites.

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