Adequate water access is a fundamental welfare requirement for pigs. Water restriction causes rapid welfare deterioration and is more common than often recognized.
Water access is one of the most fundamental pig welfare requirements, yet flow rate failures and drinker competition are common in commercial systems. Nipple drinkers calibrated below the recommended flow rate restrict water intake, causing behavioral frustration and physiological consequences. During heat stress, adequate water access is critical — restriction causes acute suffering. Regular drinker flow rate testing and ensuring adequate drinkers per pig are basic management interventions with significant welfare impact. Welfare audits that include water access assessment are more robust than those focusing only on visible behavioral indicators.