Guaranteeing consumers that poultry farming respects animal welfare is the heart of the poultry farmer, but civil society is demanding greater transparency in farming practices. Meeting society's expectations must go hand in hand with the competitiveness of poultry meat production, which is globalised and highly competitive. The notion of animal health and welfare can be assessed using a variety of methods, and new technologies offer an opportunity to take continuous measurements in real time, without disturbing the animals in their living environment. Image and sound processing enables finer and more frequent analyses than those carried out by humans. These new technologies are helping to improve monitoring and responsiveness to health problems or changes in animal behaviour through predictive analysis. The EBroilerTrack project led by ITAVI has produced promising proofs of concept in imaging and acoustics under controlled broiler rearing conditions. In the field of imaging, image analysis algorithms have been developed to monitor individual broiler chickens on the farm, with the aim of identifying welfare and health indicators for each animal observed. The performance of these algorithms is presented in this article. In the field of acoustics, the work carried out has demonstrated the benefits of using acoustic analysis to monitor the health and well-being of broilers, in the specific case of infectious bronchitis.