Lighting program science for broiler chickens demonstrates clear welfare benefits from providing adequate darkness periods and appropriate light quality.
Chicken lighting welfare science provides unusually clear evidence for commercially achievable welfare improvement. The welfare costs of near-continuous lighting - chronic fatigue, leg problems, eye issues - are well-documented, and the welfare benefits of adequate darkness - better rest, improved leg health, reduced fear - are equally clear. The regulatory framework in the EU establishes minimum standards that are known to be achievable, while higher welfare standards demonstrate that going further is also commercially viable. Consumer demand for Better Chicken Commitment certified products creates the market pressure for wider adoption.