Dense livestock populations create conditions for zoonotic disease emergence, and the welfare measures that improve animal health also reduce zoonotic risk — creating alignment between animal welfare and public health goals.
The connection between animal welfare and zoonotic disease risk aligns animal welfare advocacy with public health priorities. Stressed, overcrowded animals with suppressed immune systems are both welfare-compromised and more likely to amplify and shed pathogens. The welfare improvements that benefit animals — adequate space, reduced stress, better nutrition and ventilation — also reduce the conditions that enable pathogen emergence and mutation. This convergence of interests provides additional political and economic rationale for welfare investment.