Stockperson ability to recognize pain in farm animals is a critical welfare skill that training programs have shown can be dramatically improved.
Farm animal pain recognition is a bottleneck in welfare improvement because even motivated stockpersons cannot respond to pain they cannot detect. The development of species-specific grimace scales represents a significant advance — providing objective, teachable behavioral indicators that replace intuitive assessment. The welfare impact of training programs is substantial and measurable: better detection leads to faster treatment and lower threshold for analgesic provision. Requiring stockperson welfare assessment training as a condition of farm accreditation is a high-leverage policy intervention.