Effects of Horse Housing System on Energy Balance during Post-Exercise Recovery.
Authors: Connysson Malin, Rhodin Marie, Jansson Anna
Journal: Animals : an open access journal from MDPI
Summary
# Editorial Summary: Housing System Effects on Post-Exercise Recovery in Standardbred Horses Environmental conditions significantly influence equine metabolism, yet field evidence on housing's role in competition recovery remains limited. Connysson and colleagues investigated this question using eight Standardbred geldings in a crossover design, comparing box stalling against free-range group housing across 21-day periods whilst measuring forage intake, exercise responses, and post-exercise blood markers including non-esterified fatty acids (NEFA), lactate, and plasma proteins. Free-range housed horses consumed substantially more forage (48 kg versus 39 kg daily; p = 0.003) and demonstrated measurably faster energy balance recovery, with NEFA concentrations returning to baseline by 20–44 hours post-exercise, whilst boxed horses showed no significant NEFA reduction during the same window. Housing system had no effect on exercise intensity responses or acute post-exercise blood chemistry, suggesting the recovery advantage reflects improved voluntary intake and metabolic efficiency rather than altered exercise physiology. For practitioners advising on competition preparation and recovery protocols, these findings support free-range or group housing environments as beneficial for appetite maintenance and energy replenishment—particularly relevant for Standardbred racehorses where rapid metabolic recovery between competitions is economically and athletically important.
Read the full abstract on PubMed
Practical Takeaways
- •Free-range group housing may improve post-exercise recovery and appetite in competition horses, contrary to common assumptions that it delays recovery
- •If facilities allow, consider free-range housing during recovery periods after intense exercise to optimize metabolic recovery and forage intake
- •Standard exercise biomarkers (heart rate, lactate, urea, protein) do not differ by housing type, but energy metabolism markers (NEFA) show meaningful differences
Key Findings
- •Free-range housed horses consumed 23% more forage than box-stalled horses (48 kg vs 39 kg, p=0.003)
- •Plasma NEFA decreased significantly at 20-44 hours post-exercise in free-range horses (p=0.022) but not in box-stalled horses
- •Housing system did not affect exercise heart rate, plasma lactate, plasma urea, or total plasma protein concentration
- •Free-range housing hastened recovery of energy balance compared to box stall housing in Standardbred trotters