Horse Pasture Management for Welfare and Health

Good pasture management balances horse behavioral needs for outdoor grazing with health risks from overgrazing, sugar-rich grass, and parasitic infection.

Key Facts

Horses evolved for continuous low-level grazing over wide ranges; access to pasture supports physical and mental health
Ryegrass and other temperate pasture grasses accumulate high levels of non-structural carbohydrates (NSC) in spring and autumn
High-NSC grazing triggers laminitis in susceptible horses — a painful and potentially career-ending condition
Rotational grazing prevents overgrazing and allows pasture recovery, maintaining grass quality and reducing parasite burden
Larvae of equine gastrointestinal parasites concentrate on pasture; grazing density and rotational management affect transmission
Fecal egg counts enable targeted selective deworming, reducing anthelmintic resistance while maintaining parasite control
Dry lots provide space and social access without grass for laminitis-prone horses during high-risk seasonal periods
Track systems (equitrack) simulate wide-ranging movement by providing varied footing and scattered forage points around a perimeter

Welfare Considerations

Pasture access is one of the most welfare-significant factors in horse keeping, yet managing it well requires significant knowledge and active management. The temptation to provide unlimited pasture — seeing horses as naturally suited to grazing — ignores the metabolic mismatches between modern horses and modern high-sugar cultivated pastures. A horse developing laminitis from unconstrained spring grazing experiences severe, chronic pain from a condition that is largely preventable. Conversely, horses confined without pasture or turnout access experience behavioral frustration, increased stress, and higher rates of stereotypic behaviors. The welfare ideal balances meaningful outdoor time with forage management that keeps susceptible horses safe from metabolic disease. Track systems offer an innovative solution by providing movement opportunity and social contact without unrestricted grass access.

What You Can Do

Provide regular turnout as a baseline welfare requirement for all horses, even if pasture access must be limited
Monitor pasture grass NSC content seasonally and restrict laminitis-prone horses during peak sugar periods
Implement rotational grazing to maintain grass quality and reduce parasite contamination over a pasture season
Use fecal egg count monitoring to guide targeted selective deworming rather than blanket treatment protocols
Consider dry lots or track systems for horses with metabolic conditions requiring grass restriction
Remove feces from small paddocks to reduce larval contamination and parasite transmission
Consult an equine nutritionist or veterinarian about pasture-specific NSC testing if managing horses with metabolic conditions