Council Directive 91/629/EEC of 19 November 1991 laying down minimum standards for the protection of calves has been replaced by new Council Directive 2008/119/EC of 18 December 2008 laying down minimum standards for the protection of calves (Codified version)
Council Directive 1999/74/EC, adopted in 1999, laying down minimum standards for the protection of laying hens distinguishes three types of rearing systems for laying hens.