This Book of Abstracts is the main publication of the 63nd Annual Meeting of the European Association for Animal Production (EAAP), held August 27 to August 31, 2012 in Bratislava, Slovakia. It contains abstracts of the invited papers and contributed presentations. The meeting addressed subjects relating to science and innovation. Important problems were also discussed during the sessions of EAAP's nine Commissions: Animal Genetics, Animal Nutrition, Animal Management and Health, Animal Physiology, Cattle Production, Sheep and Goat Production, Pig Production, Horse Production and Livestock Farming Systems.