he European Federation for Animal Science (EAAP) aims to improve the knowledge and the dissemination of research results regarding animal science. The scientific structure of the EAAP is based on study commissions. The current study commissions are on (1) Animal Genetics, (2) Animal Health and Welfare, (3) Animal Nutrition, (4) Animal Physiology, (5) Livestock Farming Systems, (6) Cattle, (7) Horse, (8) Pig, (9) Sheep and Goat, (10) Insects, and (11) Precision Livestock Farming. The Annual meeting organised by this society provides an excellent opportunity for the application of new ideas in practice through many parallel sessions, a plenary meeting, poster presentations, and discussions about scientific achievements in livestock production all around the world. All these activities make the Annual meeting of the EAAP one of the largest animal science events in the world. In the present supplement, eight review papers selected by the different EAAP study commissions from all invited speakers at the 73rd Annual Meeting of the EAAP (Porto, Portugal) are included.