Pasture-based grazing systems allow sheep to express natural foraging, movement, and social behaviours; grazing management affects both welfare and ecosystem outcomes.
Grazing sheep welfare depends fundamentally on pasture quality and management. Adequate pasture allows sheep to meet their nutritional needs through natural grazing behaviour over appropriate grazing periods; overstocked or depleted pasture creates competition, nutritional deficit, and the chronic stress of inadequate resources. Rotational grazing that rests swards between grazing periods maintains pasture quality, reduces parasite challenge, and allows sheep to graze fresh vegetation without ingesting parasitic larvae at dangerous concentrations. The interaction between grazing management, pasture quality, and parasitism means that good grazing management serves both welfare and health simultaneously.