The growing world population has increased the demand for meat production and has led to a rapid growth in the scale of broiler enterprises globally. Poultry producers need to implement several changes in their production systems to supply the increasing demand for poultry products while considering farming sustainability and ensuring high standards of animal welfare. The recent advancement in technology and engineering tools and materials, such as advanced sensors and sensing devices, data processing, and machine learning methods, provides effective tools for the broiler industry to monitor broiler welfare indicators. This review paper will (a) explain smart broiler farming, (b) describe on-farm broiler welfare assessment, and (c) explore on-farm applications of smart technologies that can be used as animal-based welfare assessment tools.
