Arterial blood gases of the domestic hen

Abstract

Individual blood samples were collected anaerobically from the brachial arteries of adult White Rock hens and were analyzed for Po2, Pco2, pH, oxygen content and capacity, and CO2 content and capacity. A dissociation curve was constructed from data on equilibration of pooled venous blood. The average arterial oxygen saturation was 90%, the Pco2 was about 32 mm Hg, the Po2 was between 94 and 99 mm Hg, and the pH averaged 7.49. The dissociation curve, as has been shown before, was shifted to the right of most homeothermic species.

Blood Respiratory Gases, Lactate, and Pyruvate during Thermal Stress in the Chicken

“…Data in the present report support these findings. In addition, our data demonstrate that arterial blood p02 is normal or above normal as body temperature increased (7). I t is reasonable (to assume percentage O2 saturation of arterial blood is not changed in the hyperthermic chicken.…”

Induction and recovery characteristics and cardiopulmonary effects of sevoflurane and isoflurane in bald eagles

“…Despite these differences, Pao 2 values were comparable between isoflurane and sevoflurane treatments and remained greater than reference ranges for awake birds. 17,31 Overall, Pao 2 values in eagles were lower than in healthy dogs and cats administered inhalant anesthetics delivered in 100% O 2 . 32 This may be attributable to the unique anatomic features of the avian respiratory system in which only 10% of the respiratory tract volume (10 to 20 mL/kg) undergoes gaseous exchange, compared with 96% of the respiratory tract volume (45 mL/kg) in the mammalian lung.…”

The Lung Air Sac System of Birds

“…This is perhaps the reason for the discrepancy between the data of Bartels, Hiller, and Reinhardt (1966) with an oxygen capacity of 17.93% by volume for the adult chicken and those of Morgan and Chichester (1935), Chiodi and Terman (1965) and Piiper, Drees, and Scheid (1970) with an 02-content of 12.5, 12.7, and 10.0% by volume in the blood of chickens. Not until at maximal ventilation an optimal relation between cardiac output per minute and gas exchange should exist because only then all parabronchi are perfused so extensively that a gas exchange may take place along their whole length.…”