Study links strip grazing to poorer welfare signals in ponies

A new Equine Veterinary Journal study is sharpening the conversation around pony weight management by suggesting that how grazing is restricted matters as much as the fact that it is restricted. In a within-subject crossover trial involving 35 pasture-kept ponies, researchers found that track grazing was associated with more movement, greater distance traveled, and less overt agonistic behavior than strip grazing, raising fresh welfare questions about a common management tool used to control obesity risk. (pubmed.ncbi.nlm.nih.gov)

The backdrop is a familiar one for equine clinicians. Equine obesity is a persistent welfare and medical issue, with links to equine metabolic syndrome and endocrinopathic laminitis, and management advice often centers on restricting pasture intake. But many of the practical tools used in the field, including strip grazing, grazing muzzles, dry lots, and track systems, have been adopted faster than their welfare effects have been studied. The authors explicitly framed their work around that gap, noting that little was known about the welfare impact of these commonly used approaches. (pure.sruc.ac.uk)

The study followed four established herds in the East of England over the summer, with each herd spending four weeks on a strip-grazing system and four weeks on a track system in random order. The grazing areas were matched by hectare, and ponies remained on pasture around the clock without supplemental feeding. Behavior was assessed using 24-hour video surveillance, activity was tracked, and bodyweight, body condition score, and cresty neck score were measured weekly. On the track system, ponies spent a higher proportion of time moving, covered a greater median distance over 24 hours, and showed less overt antagonistic behavior than on strip grazing. The authors concluded that strip systems may reduce movement and increase conflict, potentially because of perceived space restriction or concentration of resources, even when total accessible area is equivalent. (rcvsknowledge.org)

There are important caveats. Exposure to each system lasted only four weeks, which likely limited the ability to detect meaningful changes in bodyweight or condition. That makes this more of a behavioral and welfare signal than a definitive metabolic-management trial. Still, the findings line up with adjacent research showing that space-restricted grazing can alter equine time budgets, and with broader work on pasture-track housing that has focused on movement and management tradeoffs in horses at risk of obesity and laminitis. (pure.sruc.ac.uk)

Industry coverage and secondary commentary have largely treated the findings as a practical reminder that welfare costs can accompany restrictive feeding strategies. RCVS Knowledge’s evidence summary said the study provides evidence that strip grazing can negatively affect pony welfare and behavior, and emphasized that grazing-system choice should be part of weight-management planning. Coverage in equine trade media similarly highlighted the track system’s association with greater movement and fewer antagonistic interactions. Those reactions don’t replace independent expert commentary, but they do suggest the paper is resonating with clinicians and equine welfare audiences concerned about balancing metabolic control with natural behavior. (rcvsknowledge.org)

Why it matters: For veterinary professionals, the practical message is that pasture restriction shouldn’t be treated as a one-variable intervention. If a clinician recommends reduced grass intake for an overweight pony, the choice of system may affect locomotion, competition around forage, and day-to-day welfare, all of which can influence adherence and outcomes. In cases involving native ponies, easy keepers, or animals with prior laminitis risk, that may mean discussing track layouts, herd compatibility, forage distribution, and monitoring for social tension, rather than defaulting to strip grazing because it is familiar or simple to set up. This is an inference from the study’s behavioral data and the wider obesity-management context, but it is a clinically reasonable one. (pure.sruc.ac.uk)

What to watch: The next step is longer-duration research that pairs welfare measures with harder clinical endpoints, including weight change, insulin dynamics, and laminitis risk. It will also be worth watching whether future guidance from welfare organizations, equine charities, or continuing education programs begins to distinguish more clearly between restricted grazing methods, rather than treating them as interchangeable tools for pasture control. (rcvsknowledge.org)