Abstract
Farm animal welfare (FAW) is a growing societal concern, reflected by over 30 years of research to inform policy and practice. Despite the wealth of evidence to improve FAW, implementation of good practice continues to be an issue. The role of the stakeholder, particularly farmers, is pivotal to FAW improvement. This semi-systematic review synthesizes the evidence published in the last 30 years, worldwide, to address two main questions "what do farmers think (farmer's general view) about farm animal welfare?" and "what are the factors that influence their thinking?". A thematic analysis was conducted to identify factors that influenced the implementation of FAW innovation. The main outcomes extracted from 96 peer-reviewed publications on a range of livestock species identified 11 internal factors including farmer knowledge, empathy, personality, values, and human-animal bond; 15 external factors including economic advantages, communication, time and labor influenced the perception of FAW. Farmers' knowledge and cost implications of FAW were the most frequently reported factors. The review further highlights the need for promoting interdisciplinary collaboration and stakeholder participation. This study suggests strategies to improve FAW, including tools to support behavioral changes amongst farmers.