Key result
Among 248 poorly performing Standardbreds, lower airway inflammation (neutrophilia and mastocytosis) was associated with fewer lifetime starts and wins up to 6 months post-hospitalization.
Why the study?
Poor performance in racehorses is commonly associated with subclinical diseases, prompting evaluation of the associations between medical disorders and racing results in Standardbred trotters.
How do various medical disorders affect racing outcomes in poorly performing Standardbred trotter racehorses?
Observational (n=248)
How do various medical disorders affect racing outcomes in poorly performing Standardbred trotter racehorses?
Lower airway inflammation has both short- and long-term negative impacts on racing performance in Standardbred trotters.
Answers are grounded in this paper and cite their sources.
Supports airway evaluation in underperforming trotters; leaves open whether treating neutrophilia or mastocytosis improves starts or wins.
Poor performance in racehorses is commonly associated with subclinical diseases. This study aims to evaluate the associations between medical disorders and racing results in Standardbred trotters. The clinical records of 248 poorly performing Standardbreds were retrospectively reviewed, and their racing results were extracted from an online database, concerning the periods 3 months before and 6 months after hospitalization and the entire lifetime. Generalized linear models were used to evaluate the effects of different disorders on racing outcomes. Airway neutrophilia was associated with limiting lifetime starts and wins pre- and post-hospitalization, while mastocytosis was associated with less wins in the post-hospitalization period. Therefore, lower airway inflammation showed both short- and long-term impacts on racing performance. Severe upper airway obstructions and gastric ulcers showed associations with less placings in the post-discharge period but no long-term influence on performance. The significance of exertional rhabdomyolysis was indeterminable, yet interference with the number of starts in the post-discharge period was reported and associated with lower total career earnings. Exercise-induced pulmonary hemorrhage and cardiac arrhythmias were not associated with worse racing outcomes: therefore, their role in poor performance remains unclear.
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Feudo et al. (2023) conducted an observational in Poor performance in racehorses (n=248). Medical disorders (e.g., airway neutrophilia, mastocytosis, gastric ulcers) was evaluated on Racing outcomes (starts, wins, placings, and career earnings). Among 248 poorly performing Standardbreds, lower airway inflammation (neutrophilia and mastocytosis) was associated with fewer lifetime starts and wins up to 6 months post-hospitalization.
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