Histopathological analysis of broiler chicken lungs and hearts were made to determine the effect of 2% oxygen supplementation during the hatchery period on the first and the 40th days of ages. The histopathological description response of the heart and lung indicated that oxygen supplementation during egg incubation, carried out in this work, resulted in less severe changes in chick’s organs and reduction of the mortality rates.
histopathology analysis; hearth; lung; broiler; oxygen supplementation
