Two experiments were conducted to determine whether administering a dopamine antagonist to steers fed endophyte-infected (E+) tall fescue would increase serum prolactin (PRL) and reduce rectal temperature. Steers in both experiments were housed in environmentally controlled chambers (32 degrees C; 50% relative humidity). In Exp. 1, 10 steers were allotted randomly to receive s.c. injections of ...

in this experiment six healthy adult dairy jersey cattles and eight calves (aged 4-6 months) were selected to measure temperature of different body skin sites, rectal temperature, respiration and heart rates during summer and winter. body sites maximum and minimum temperature in calves during summer belonged to the ear, forehead, right flank, abdomen (38.4-38.9 ˚c) and carpus (32 ˚c). this was ...

Several pieces of evidence suggest that the noradrenergic afferents in the medial preoptic area produce sleep and hypothermia by acting on alphal adrenergic receptors. On the other hand, in a few studies monitoring body temperature with a rectal probe, preoptic injection of the alphal adrenergic agonist methoxamine produced contradictory changes in body temperature and sleep-wakefulness. Such c...

The present study was designed to test the hypothesis that arginine vasopressin (AVP) mediates hypoxia-induced anapyrexia. The rectal temperature of awake, unrestrained rats was measured before and after hypoxic hypoxia, AVP-blocker injection, or a combination of the two. Control animals received saline injections of the same volume. Basal body temperature was 36.52 +/- 0.29 degreesC. We observ...

Temperature was measured in the left ventricle, aorta, liver, brain, lung, bone marrow, kidney, and spontaneous solid tumors in dogs undergoing whole body hyperthermia in a radiant heat device. Rectal temperature was found to be a satisfactory indicator of systemic arterial temperature during plateau temperature conditions but rectal temperature underestimated arterial temperature during heatin...