Exercise in Thoroughbred yearlings during sales preparation: a cohort study.
Authors: Bolwell C F, Rogers C W, French N P, Firth E C
Journal: Equine veterinary journal
Summary
# Editorial Summary: Exercise in Thoroughbred yearlings during sales preparation Researchers across 18 New Zealand stud farms tracked daily exercise routines and health outcomes for 319 yearlings preparing for the 2009 national sales, monitoring hand walking, mechanical walker and lungeing protocols over a median 69-day preparation period. Of the 283 yearlings exercised (88.7% of the cohort), exercise duration varied significantly by sex, individual farm and preparation month, though neither sales category nor predicted price influenced exercise prescription. Lameness emerged as the predominant health concern, occurring at a rate of 0.08 per 100 horse-days with considerable between-farm variation, whilst incidence was unaffected by age, sales type or seasonal timing. The study reveals substantial heterogeneity in exercise programming both across and within farms, suggesting that whilst individualised tailoring is already standard practice, there is scope to align preparation strategies more deliberately with each horse's anticipated racing career rather than relying on generic sales-focused protocols. These findings should encourage equine professionals involved in yearling preparation to consider whether current exercise regimens optimise musculoskeletal development for the specific demands each individual will face post-purchase.
Read the full abstract on PubMed
Practical Takeaways
- •Sales preparation exercise programmes are already individualized on many farms; this variation suggests opportunity to optimize protocols based on each horse's intended career path
- •Lameness risk varies significantly between farms despite similar preparation protocols, indicating that farm-specific management factors warrant investigation
- •Exercise duration differences by gender suggest that tailored exercise prescriptions may be warranted for colts versus fillies during sales preparation
Key Findings
- •88.7% of yearlings (283/319) were exercised during sales preparation using hand walking, mechanical walkers, and lungeing
- •Median sales preparation duration was 69 days (IQR 61-78) with significant variation between farms (P<0.001)
- •Lameness incidence rate was 0.08 per 100 horse days (95% CI 0.05-0.13) with significant variation between farms (P=0.02)
- •Exercise time differed significantly by gender (P<0.001), farm (P<0.001), and preparation month (P<0.001), but not by sale type or price category