22. Michigan Compiled Laws, Chapter 287, Act 466 of 1988, Section 287.746. Available online: http://legislature.mi.gov/doc.aspx?mcl-287-746 (accessed on 8 May 2013). 23. Council Directive 1999/74/EC of 19 July 1999. Laying Down Minimum Standards for the Protection of Laying Hens. ...