The vision of the society with regard to animal well-being is moving, and this has occurred, mainly, due to fast urbanization during the last half century, that, combined with the increase of the purchasing power, demand specific actions with regard to the environment and to the conditions of the criatrios of the animals lodged for consumption; amongst these, animal well-being is distinguished. Still she is universally accepted as measured of animal well-being, according to DAWKINS (2003), its physical health. With the Brazilian production of chicken meat, in 2006, it reached about nine million tons, with the growth of 4,1% above of the 2005 production and still, beyond putting into motion an annual prescription of about 30 million dollar, the chain of production of cut chickens creates five million fixed jobs approximately and represents around 6% of the foreign commerce Brazilian, with a total of exportation of the order of three million tons, including products in natura, industrialized and cuts Amongst the destinations of the Brazilian meat of chicken, meet countries of the European Union (14%) and Japan (18%), that they possess restricted legislation of conditions of lodging with regard to well-being of the birds (OWADA, et al 2007). However, what still it is considered controversial is if this measure would only be enough, since indicating physiological of well-being they can, eventually, to be a natural reply the activities or natural excitaes of the animal, instead of indicating, specifically, its well-being. Recent literature on the questions of well-being in the production of birds indicates that the subjects related to the thermal and aerial ambincia, as well as amount and intensity of light of the sheds, are boarded in the research separately, being, however, more influential in the reply of the birds when the extremities occur simultaneously.