Abstract:SUMMARY1. Respiratory frequency, shivering, ear skin temperatures and rectal temperatures were observed following intraventricular injections of noradrenaline (NA), 5-hydroxytryptamine (5-HT) and saline (NaCi) into new-born lambs exposed to ambient temperatures of 4, 21, or 300 C.2. Intraventricular NA caused respiratory rate to decrease and body temperature to increase in the 300 C environment. At 210 C, it increased ear skin temperature but did not significantly affect rectal temperature. At 40 C, NA decreas… Show more
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