Study: Nosebands Can Cause Nasal Bone Damage in Horses

Researchers found that 37% of the nearly 150 Warmblood horses they examined had at least one lesion on the nasal bone, and nearly 14% had at least one lesion on the mandible (lower jaw).
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Study: Nosebands Can Cause Nasal Bone Damage in Horses
Photographs of horses’ profiles of which examiners (n = 2) in the study agreed there was confirmed (a) exostosis and (b) concavity in the nasal bones. | Photos courtesy of Missael García-Márquez/Research Gate
Some horses’ facial bones become abnormally thicker or thinner in the noseband and curb chain regions, creating lesions that are visible on radiograph (X ray) and can even be felt or seen, according to a study.

Such bone remodeling is not evidence of cause-and-effect but suggests horses might be damaging their own skulls “in a bid to seek comfort” under tightened tack, said Paul McGreevy, BVSc, PhD, MRCVS, MACVS (Animal Welfare), professor of animal behavior and animal welfare science at the University of Sydney, in Australia.

“If bit pressure prompts a horse to open his mouth in search of relief from the pressure but is denied comfort because of a restrictive noseband, he may not simply give up but may just keep working against the stricture of the noseband” said McGreevy, who received a 2020 Global Animal Welfare Award from the World Veterinary Association on Nov. 2. “My fear is that these lesions may be evidence of animals in training, competition, or work who are essentially mutilating themselves.”

McGreevy and his fellow researchers, including Lucia Pérez-Manrique, DVM, of the National Autonomous University of Mexico in Mexico City, examined the heads of nearly 150 Warmblood riding horses. As part of the Equine High-Performance Centre (CEAR) of the country’s military cavalry, the horses perform in dressage, show jumping, eventing, and military processions. The veterinary scientists visually inspected and palpated (felt) the horses’ faces and then conducted radiographic imaging of the skulls to check for abnormalities in the nasal and jawbones

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Passionate about horses and science from the time she was riding her first Shetland Pony in Texas, Christa Lesté-Lasserre writes about scientific research that contributes to a better understanding of all equids. After undergrad studies in science, journalism, and literature, she received a master’s degree in creative writing. Now based in France, she aims to present the most fascinating aspect of equine science: the story it creates. Follow Lesté-Lasserre on Twitter @christalestelas.

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