Animals: other; animal industry act; modify. Amends sec. 46 of 1988 PA 466 (MCL 287.746).

HB 4117 amends Michigan's Animal Industry Act to require cage-free housing for egg-laying hens and restrict confinement for gestating sows and calves raised for veal. It prohibits keeping hens in cages or confining them in ways that prevent turning around freely or fully extending limbs, mandating cage-free systems with enrichments like perches and nest boxes, and setting minimum floor space based on industry guidelines. The law affects egg producers (especially those with 3,000+ hens) and businesses selling shell eggs in Michigan, with small farms (<3,000 hens) exempt from the egg sales ban. It takes effect for egg-laying hens on January 1, 2029, and for gestating sows on April 1, 2020 (already implemented).