A recent study led by Megan Ross, a postdoctoral researcher at the University of Guelph and Atlantic College of Veterinary Medicine, in partnership with Dr. Katrina Marquise, investigates the challenges horse owners face in managing their horses’ weight. The research highlights a serious concern as nearly 29% of Canadian horses are overweight or obese, which can result in health issues such as laminitis, osteoarthritis, and metabolic disorders. Owners often struggle with balancing their horses’ physical health and mental well-being since horses require social interaction and grazing, which can contribute to weight problems.
The study also identifies a social phenomenon dubbed the “Thelwell Factor,” where overweight horses are normalized in certain equestrian circles and media, sometimes skewing perceptions of healthy weight. Social norms and horse show traditions often favor horses that appear slightly overweight, which pressures owners to keep their horses plumper than ideal. Many rely on traditional knowledge rather than scientific evidence, making change difficult.
Time, cost, and equipment limitations are significant barriers to effective weight management, alongside emotional attachments to heavier horses, which are often mistakenly seen as a sign of good care. Owners frequently want their horses to gain weight before winter, anticipating weight loss during harsher conditions, but this can backfire, leading to chronic health problems.
The study also notes that despite some owners trying strategies like muzzle grazing and dry land management, many have concerns about boredom and stress in their horses. Innovative methods such as the UK’s Track System—designed to promote natural movement and exercise—are less known in Canada but show promise. Interestingly, slow feeding systems, proven to reduce stress and overeating, were rarely mentioned by participants.
Looking forward, Ross emphasizes the need to blend equine science with social science to shift cultural norms and improve knowledge sharing. Promoting healthy weight as the standard will require support for owners in overcoming discomfort associated with leaner horses and creating practical, welfare-friendly approaches.
Although not central to the study, body condition scoring (BCS) was used for participant selection. Veterinarians used the Henneke BCS system to identify overweight horses. The study suggests future improvements for BCS tools, including databases of real horse images, to help owners better understand and apply weight management practices.
Fan Take: This research is crucial for Horse Racing fans as it highlights the growing issue of equine obesity, which can directly impact a horse’s performance and longevity. Addressing weight management effectively can help enhance horse welfare, ultimately benefiting the sport by ensuring healthier, more competitive racehorses.
