Probiotics as a solution for Rhodococcus equine in foals

By Blake Jackson

The University of Kentucky's Martin-Gatton College of Agriculture, Food and Environment is spearheading a new research project aimed at combating Rhodococcus equi infections in young foals. This bacterial infection can lead to severe pneumonia, often resulting in significant health issues and even death.

“This infection has been a persistent problem for the horse industry, leading to high costs, complicated treatments and heartbreaking losses,” said Yosra Helmy, assistant professor of infectious diseases and microbiology in the Department of Veterinary Science at the Maxwell H. Gluck Equine Research Center at Martin-Gatton CAFE. “By exploring probiotics as a preventative and treatment solution, we aim to shift away from traditional antibiotic treatments and offer horse owners and veterinarians a sustainable approach to protect foals and promote long-term health.”

Traditional treatments for R. equi often involve antibiotics. However, the increasing prevalence of antibiotic-resistant strains limits their effectiveness. Additionally, antibiotics can have side effects and disrupt the horse's gut microbiome.

The new research focuses on the potential of probiotics to prevent R. equi infections. Probiotics are beneficial bacteria that can help maintain a healthy gut microbiome. By introducing specific probiotic strains, researchers aim to create a hostile environment for R. equi, reducing the risk of infection.

“If we can confirm that these probiotics are effective and safe, they could become a valuable tool for horse farms worldwide,” Helmy said. “This would mean fewer infections, reduced reliance on antibiotics and ultimately, a healthier start for foals.”

The study is funded by the American Quarter Horse Association and is expected to have a significant impact on the horse industry.

By developing effective probiotic treatments, researchers hope to reduce the incidence of R. equi infections, lower veterinary costs, and improve the long-term health of horses.

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