Welfare of Dairy Cows in Extended Grazing Systems

Extended grazing systems for dairy cattle offer welfare advantages over housing but also present specific welfare challenges related to weather exposure, nutrition management, and lameness.

Key Facts

Pasture-based dairy systems have lower rates of lameness and mastitis than fully housed systems
Cows on pasture choose to spend 70-80% of their time grazing if given free choice
Seasonal calving in grazing systems means peak lactation coincides with spring grass flush — a positive welfare alignment
Winter housing periods in temperate systems require good indoor welfare standards to complement grazing benefits
Long-duration milking walks on concrete contribute to lameness in some pasture-based systems

Welfare Considerations

Extended grazing dairy systems are generally superior to full housing from a welfare perspective — cows can express natural grazing behavior, social dynamics are less compressed, and the physical and psychological benefits of access to pasture are well-documented. However, grazing systems are not automatically high welfare. Poorly managed grazing nutrition, long concrete walks to milking parlors, inadequate housing during cold periods, and the fundamental challenge of dairy cow lactation and calf separation apply equally to grazing and housed systems.

What You Can Do

Choose milk and dairy products from certified pasture-based or extended grazing systems
Support standards that require genuine extended grazing access rather than token outdoor access
Advocate for grazing access requirements in all dairy welfare certification schemes
Raise awareness of the welfare differences between dairy production systems with consumers