Changes made by Council Directive 88/166/EEC of 7 March 1988 complying with the judgment of the Court of Justice in Case 131/86 (annulment of Council Directive 86/113/EEC of 25 March 1986 laying down minimum standards for the protection of laying hens kept in battery cages)
EU Directive 1988/166
No changes made by Council Directive 88/166/EEC of 7 March 1988 complying with the judgment of the Court of Justice in Case 131/86 (annulment of Council Directive 86/113/EEC of 25 March 1986 laying down minimum standards for the protection of laying hens kept in battery cages) are recorded.
From legislation.gov.uk's record of changes, the official one: see it there.