‘Wet feeding’, i.e. feeding livestock liquid feed, has long been known and practised, but advances in technology and computing have enabled its extensive use in large-scale production. This system has many advantages over conventional dry feeding, including the use of inexpensive agri-food products, which are flexible and easy to deliver, the possibility of accurate dosing, which reduces feed losses, and better observation and control of animals. The use of a wet feeding system prevents the spread of pathogens, such as coliform bacteria and Salmonella, in the digestive tract of animals, improving their health and nutrient utilization. This leads to improvement of production results and reduces production costs. However, implementation of a wet feeding system requires adaptation of the farm and a high level of knowledge among management personnel.