# The Welfare of Farmed Animals (Wales) Regulations 2001, Paragraph 2


All cage systems built or brought into service for the purpose of rearing laying hens on or after 1st January 2003 shall comply with the requirements of this Schedule.

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Source: https://www.legislation.gov.uk/wsi/2001/2682/schedule/3C/paragraph/2 (the official version)
Page: https://openlegislation.uk/welfare-of-farmed-animals-wales-regulations-2001/schedule-3C/paragraph-2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.