Changes of skin temperature in human, rabbits, goats and chickens under a constant ambient temperature

Abstract

Ita humans, rabbits, goats and fowls skin tenxpcraturcs XXZCFC rneastured irt variousareas of the body at ambient temperatures falling front 40 to 5(C artd some randomconstant ambient temperatures lcetween 0 and 40C.1. Skin temperatures flxtctuated with a large amplitttde o[ over O.2C wzithout anysjvcci?t1 c;ruses, the largest ;tntplitudc 1.vcing alcout 20C in fowls.2. f lae patterrts o[" tcmperatture cltautgc ?vt various skit? sjcots were cl?tssificd Lertta-Li, zely irato the fol1owir?g 4 types.a. Tyjce l : Large fluctuatiort of skin tcn?j>erature was exhibited inn tlte ntiddlerange of aml>iernt temperature. An S-shaped curve was shown when the maximum skirttemperatures at each arnbient temperature had been plotted.b. Type 2: Small fluctuation of skin temperature was exhibited in the middle andthe higlter ranges of ambient ternperature. Skin temperature was always a little higherthamr ambient temperature. c. Type 3 : Large fluctuation of skin temperature was seen in a relatively lowrange of ambient temperature. A bow-shaped curve was SIIOVVII only when the maximalvalues of skin temperature at each ambient temperature had been plotted and connected.d. Type 4 : Small fluctuatic>n of skin ternperature was exhibited in aJmccst allranges of ambient temperature. A bow-shaped curve was shown.3. The human toe tennperature was only one measurccrnent that was classifiecl ir?totwo types. Of the cases c>f this temperature, rnatty 1>elc>nged to type I and S0IIIC tc>type 2.4. It took a long time, sometirnes 3 or 4 hours, for the temperatures aL sucln skixtspots as those of the human toe and rabbit hind leg to t"ccach a final stable v;tlue inresponse to a given ambient temperature.5. The largest amplitude of fluctuation in lcody tennperature at a given constantambient temperature was about llC in humans, about l4C in rabbits, about 11).6Cita goat, and about 20C inn fowls.6. The rise in skin temperature arnd the large fluctuation in ski?n temper;atureobserved in type l seemed to ;tjcpear sirnttltaneously in the S21rnC r;tngct of ;trnlm>ientternperature.7. Each species c*V animals, includirtg hum;ans, had its OVVII range of amlcienttemperature in which skin temjcerature type I rose considerably and showed largefluctuations. Such range was apj>roximately from 20 to 25C in? hurnans, 16 to 23Cin rabbits, 15 to 25C in goats arnd 15 to 23C in fowls.