[Adaptation of breeding swine to high environmental temperatures and delimitation of tolerance ranges of thermically stressed swine populations].

Proceeding from the morphological and physiological specifics of pigs as to their adaptation to high ambient temperatures, the paper presents recent international findings on problems of the thermal tolerance of breeding pigs active in reproduction. The effect of humidity and air speed near the animals are summarized in attempting to delimitate tolerance levels for thermal stress to pigs, and conclusions are drawn for the amelioration of the climate.