Degree Level

Hypoxia and the Development of Endothermic Capacity in Chickens (Gallus Gallus) (open access)

Hypoxia and the Development of Endothermic Capacity in Chickens (Gallus Gallus)

Adult chickens employ endothermy – internal generation of heat that maintains a constant body temperature (Tb). Prior to hatching, chicken embryos are ectothermic - controlling Tb by external heat sources. Upon hatching, the hatchling transitions from an ectotherm to an endotherm that has been shown to be delayed by hypoxia. In this study, whole animal oxygen consumption () and liver, heart, and skeletal muscle citrate synthase activity (CSA) and were measured during this transition to endothermy in chickens incubated in normoxia and hypoxia (15% O2). The only significant differences in occurred in 48 hour old hatchlings where was lower in normoxic hatchlings. There were no differences in CS activity between age and incubation oxygen levels. Additionally, preliminary 2-D protein gels of embryo and hatchling liver show changes in the proteome upon hatching. Results suggest that hypoxia had no significant effect on CSA and a minimal effect on .
Date: August 2012
Creator: Neely, Aaron Mackallan
System: The UNT Digital Library
“Valentine’s Day” and Other Works (open access)

“Valentine’s Day” and Other Works

The following collection includes three short stories and two essays compiled with a critical preface. “Valentine’s Day” explores the limits of friendship and love in various situations including, two road trips (one fictional and one factual), pet ownership, and the impersonations of Frank Sinatra.
Date: May 2012
Creator: Thornburg, Chrissie
System: The UNT Digital Library