The decades-long campaign against battery cages provides lessons for future welfare reform campaigns: the role of science, public opinion, corporate commitment, and legislation in driving lasting change.
The battery cage campaign is the definitive case study in farm animal welfare reform, demonstrating both the possibility and the difficulty of systematic change. The 40-year timeline from scientific recommendation to legislative implementation illustrates why waiting for legislation alone is insufficient; consumer pressure and corporate pledges provided complementary drivers that accelerated change in the supply chain ahead of legal requirements. The same multi-pronged approach is now being applied to cage-free pledges, broiler welfare, and aquaculture reform.