Some cuntries in these areashave a very high farm animal densitive and animal production comes mostly from industrialized livestock systems, which rear highly selected pids, poultry and dairy cows. The indirect effects of global warming such as soil infertility, water scarcity, grain yield and quality and diffusion of pathogens may impair animal production in these systems more then the direct effects. Indeed, in these systems the animals can cope better with the direct effects of high temperature, i.e. heat stress, with the help of diet, techniques of cooling or farm management.