ANSC 2330 Lecture Notes - Lecture 18: Volumetric Heat Capacity, Thermoregulation, Hyperthermia
4 Dec 2017
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Evaporation water from body surfaces or breathing passages cools the body. Critical to maintain thermoregulation: low temperature overworked, high temperature breakdown and denaturation. Thermoneutral zone range of temperature that animal can maintain its body temperature easily i. e. fluffing up fur. Acclimation animal adjusts to temperature of environment. Surface area vs. volume (or mass: smaller sphere has a higher sa:v ratio than the larger sphere and will lose heater faster, large (cid:373)a(cid:373)(cid:373)als ha(cid:448)e (cid:862)ther(cid:373)al i(cid:374)ertia(cid:863) (cid:271)e(cid:272)ause of lo(cid:449) a:v ratio. Sweating vs. renal fluid loss: rest most liquid lost through urine (kidneys, exercising skin is the area of most liquid loss (sweating) Electrolytes in equine sweat: contains large amount of electrolytes, hypertonic to plasma. Equine sweat: greater rate per unit of surface area than humans, horse will lose the most amount of cl- within 2-3 hours of moderate to heavy exercising.
