Farm Animal Welfare

Farm Pig: Drinking Water Provision and Welfare

Adequate water provision is a fundamental welfare requirement for pigs, with water restriction causing rapid physiological deterioration and significant suffering.

Key Facts

Pigs require 2-10 litres of water per day depending on age, temperature, and stage of production
Nipple drinkers must deliver water at sufficient flow rate - minimum 1.5 litres per minute for sows
Water restriction of just 24 hours causes stress, aggression, and reduced feed intake
Salt poisoning and brain oedema can result from water restriction followed by rehydration
Water quality including nitrate, bacteria, and biofilm levels directly affects consumption and health

Welfare Considerations

Water is fundamental to pig welfare - more immediately important than feed for short-term wellbeing. Inadequate flow rates in nipple drinkers are a common but invisible welfare problem, as pigs may appear to drink but receive insufficient volume. Regular testing of drinker flow rates, especially in hot weather, is essential welfare management.

What You Can Do

Test nipple drinker flow rates monthly and after any maintenance work
Provide extra water access points in hot weather to prevent competition
Monitor water consumption per pig as an early indicator of health and welfare problems
Ensure drinker height matches pig size throughout the production cycle
Include water provision in routine welfare assessments