Gas exchange during exercise in hypoxic ducks.

  title={Gas exchange during exercise in hypoxic ducks.},
  author={James P. Kiley and Frank M. Faraci and M. Roger Fedde},
  journal={Respiration physiology},
  volume={59 1},
We quantitatively assessed pulmonary gas exchange in Pekin ducks (Anas platyrhynchos) during running exercise (1.44 km X h-1 at 3 degrees incline) while the ducks spontaneously breathed either air (FIO2 = 0.21) or a hypoxic gas mixture (FIO2 = 0.12). During exercise, oxygen consumption increased 3 times above the resting value in normoxia and 3.6 times above rest in hypoxia. The convection requirement rose 34% and 20% in running normoxic and hypoxic ducks, respectively. The O2 extraction… CONTINUE READING