EQN 3050 Lecture Notes - Lecture 4: Blood Sugar, Blood Plasma, Exercise Intensity
20 Jan 2017
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Lower critical temperature: lowest temperature in the thermo-neutral zone (tnz, depends on the temperature to which the horse is acclimated, 5c to -15c. Most important consideration when housing horses in cold climates: protection from wind and wet, provide adequate calories from feeds with high heat increment (hay) A decrease in the concentration and volume of sweat. Thickening of the skin (to reduce heat loss) Change in breathing patterns: protects against heat lost through respiration. Heat produ(cid:272)tio(cid:374) fro(cid:373) eati(cid:374)g (cid:894)(cid:858)heat i(cid:374)(cid:272)re(cid:373)e(cid:374)t(cid:859)(cid:895) i(cid:374)(cid:272)reases: particularly effective when lots of fiber (hay) is fed, hay has a much higher heat increment than grain. Allows warm air to fill hollow space and give band of warm air around horse. Shorter da(cid:455) le(cid:374)gth (cid:894)a(cid:373)o(cid:374)g other thi(cid:374)gs(cid:895) (cid:272)auses the horse to produ(cid:272)e high a(cid:373)ou(cid:374)t of (cid:858)se(cid:271)u(cid:373)(cid:859: acts as an extra water-proofing against wet weather (like a rain-sheet) Heat loss was greater at less than -9c than at 0c.
