Adequate water access is fundamental to pig welfare but is frequently inadequate in commercial systems — nipple drinkers that malfunction or provide insufficient flow cause dehydration and significant distress.
Water is a critical welfare resource in pig farming that is easily overlooked. Thirsty pigs show increased aggression at drinkers, reduced lying time, and behavioral signs of distress. In hot weather, inadequate water access rapidly becomes life-threatening. Nipple drinkers require regular maintenance — a blocked or slow-flow drinker in a crowded pen creates a de facto water restriction. The welfare case for regular drinker audits and adequate provision standards is supported by clear science and should be a minimum requirement in any welfare certification scheme.