Paragraph 21 Changes not yet applied. Later legislation changes this provision in ways not yet written into the text below: Sch. 6 paras. 19-26 revoked by Prohibited Procedures on Protected Animals (Exemptions) 2007 Sch. 13 Sch. 6 substituted by Welfare of Farmed Animals 2003 reg. 2(4) Sch. If they are placed in farrowing crates, pregnant sows and gilts must be thoroughly cleaned. ← Paragraph 20 Paragraph 21 Paragraph 22 →