'Blood-doping' effects on hematocrit regulation and oxygen consumption in late-stage chicken embryos (Gallus gallus).

Dynamics of metabolic compensation and hematological changes in chicken (Gallus gallus) embryos exposed to hypercapnia with varying oxygen.

In day 15 chicken embryos, we determined the time course responses of acid-base balance and hematological respiratory variables during 24h exposure to 15, 20, 40 or 90% O(2), in the presence of 5% CO(2). Hypercapnic respiratory acidosis was initially (2h) only slightly (∼20%) compensated by metabolic alkalosis in normoxic/hyperoxic embryos. After 6h, respiratory acidosis was partially (∼40-50%)...

HEART RATE AND OXYGEN CONSUMPTION DURING THE CRITICAL PRENATAL PERIOD IN CHICKEN EMBRYOS (Gallus gallus): INFLUENCE OF LIGHT CUES AND THE ONSET OF PULMONARY VENTILATION

Warren Burggren, Major Professor and Dean of College of Arts and Sciences Edward Dzialowski, Committee Member Thomas Beitinger, Committee Member Earl Zimmerman, Chair of Department of Biological Sciences Sandra L. Terrell, Dean of the Robert B. Toulouse School of Graduate Studies HEART RATE AND OXYGEN CONSUMPTION DURING THE CRITICAL PRENATAL PERIOD IN CHICKEN EMBRYOS (Gallus gallus): INFLUENCE ...

Effects of the NO donors Sodium Nitroprusside and S-nitrosoglutathione on oxygen consumption and embryonic organ growth in the domestic broiler chicken, Gallus gallus domesticus

Phenotypic developmental plasticity induced by preincubation egg storage in chicken embryos (Gallus gallus domesticus)

The developing chicken blastoderm can be temporarily maintained in dormancy below physiological zero temperature. However, prolonged preincubation egg storage impairs normal morphological and physiological development of embryos in a potential example of fetal programming (in this case, "embryonic programming"). We investigated how preincubation egg storage conditions (temperature, duration, hy...

Hematocrit and blood osmolality in developing chicken embryos (Gallus gallus): in vivo and in vitro regulation.

Hematocrit (Hct) regulation is a complex process involving potentially many factors. How such regulation develops in vertebrate embryos is still poorly understood. Thus, we investigated the role of blood pH in the regulation of Hct across developmental time in chicken embryos. We hypothesized that blood pH alterations in vitro (i.e., in a test tube) would affect Hct far more than in vivo becaus...