The radiographic status of the left fore fetlock of winning thoroughbreds at Ontario racetracks in 1970.

The research article primarily discusses the high prevalence of musculoskeletal disease, particularly developing arthritis, in thoroughbred racehorses. The researchers were particularly interested in those based at Ontario racetracks, using data from 1970.

Background of the Research

• The research was embarked upon due to many years of visible concern over the high attrition rates of young Thoroughbreds in the racing industry.
• The researchers point towards the practice of starting the racing careers of Thoroughbreds prematurely, long before they have sufficiently matured to handle the demands of competitive racing.
• These concerns are not restricted to the Thoroughbred industry alone. The researchers also highlighted the same practice prevalent in other parts of the horse racing industry, particularly with Quarter Horses in the U.S.A., some of which have already started racing before they are two years old.
• The report contrasts this with the situation in the pleasure horse world, where horses used for hunting and jumping are not stressed at early ages.

Objective of the Research

• This research aims to quantify the lions of musculoskeletal disease, specifically arthritic disease, amongst Thoroughbred racehorses.
• The researchers differ from the traditional approach of defining a horse’s wellness based on Baron Parke’s definition of soundness. Instead, they’ve noticed a rarity in finding horses aged four years or more at any racetrack in North America that meet this definition.
• The study represents an initial attempt to quantify the occurrence of arthritic disease in Thoroughbred racehorses, aiming to provoke further detailed investigation into the matter.

Significance of the Research

• The researchers believe that their study is overdue, as so far, as per their knowledge, no quantifiable figures have been put forward to reflect the high incidence of musculo-skeletal diseases amongst horses that face occupational hazards each time they run or train.
• The findings may challenge the racing industry to reconsider their practices and provoke further research on the welfare of racehorses.
• The study could potentially inform future policies around the racing ages of horses, aiming to reduce the incidence of early-onset arthritis and other musculoskeletal diseases.