The space available to livestock in indoor and outdoor systems is a fundamental welfare determinant affecting movement, social behaviour, and the ability to avoid stressful interactions.
Space allowances are among the most fundamental but also most economically contested welfare parameters in livestock farming. Minimum legal space requirements in most countries allow stocking densities that welfare science suggests are inadequate for good welfare. Animals in overcrowded environments experience elevated competition for resources, increased aggression, reduced ability to perform natural behaviours, and higher disease transmission rates. The economic pressure to maximise animal numbers per unit of housing drives stocking densities toward or beyond welfare limits. Consumer and retailer demand for higher welfare standards, combined with welfare-based subsidy requirements and assurance scheme specifications, provide the market and regulatory levers for improving space allowances across the industry.