. Cyclopedia of farm animals. Domestic animals; Animal products. PHYSIOLOGY OP DOMESTIC ANIMALS 23 of " trouble with the kidneys " or with the " water" when the horse shows colicky pain from indigestion, is purely traditional and mythical. The skin. The skin or external integument of the body has several functions : (1) It acts as an organ of touch. The long hair (tentacles) on the lips and nostrils have a special tactile function. (2) It is a protec- tion to the body. With its hairy covering on top and a layer of fat underneath it retains the animal heat. The horn of the h
. Cyclopedia of farm animals. Domestic animals; Animal products. PHYSIOLOGY OP DOMESTIC ANIMALS 23 of " trouble with the kidneys " or with the " water" when the horse shows colicky pain from indigestion, is purely traditional and mythical. The skin. The skin or external integument of the body has several functions : (1) It acts as an organ of touch. The long hair (tentacles) on the lips and nostrils have a special tactile function. (2) It is a protec- tion to the body. With its hairy covering on top and a layer of fat underneath it retains the animal heat. The horn of the hoof, especially, is a poor conductor of heat. The length of the coat depends on the surrounding temperature. It changes twice a year in fall and spring. Work horses with a long winter coat sweat freely and are predisposed to "cold" and diseases of the lungs. This can be remedied by clipping if they are properly cared for. In the dog and cat, under excitement, and in the horse exposed to cold or to the direct rays of the sun after coming out of the stable, the hair becomes erect. This is caused by the contraction of the muscle fibers in the skin attached to the base of the hair. Blisters and other injuries to the skin may cause white hair to grow, which may be evidence of a previous disease of the parts. White horses can not stand heat so well as those of dark colors. The coat of the young animal often changes before it is adult. The black horse is a mouse- colored foal; brindle is yellow or lemon-colored in the puppy; the coach-dog puppy is entirely white. (3) The skin has numerous glands secreting sweat or perspiration. Solipeds are the only do- mestic animals perspiring over the entire body. The glands in these species are most abundant. Perspi- ration is seen first at the base of the ear, then at the side of the neck and shoulders, and lastly over the hind-quarters. The ass and mule sweat less profusely than the horse. The quantity of perspira- tion in the horse in
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Keywords: ., bookauthorbaileylh, bookcentury1900, bookdecade1920, bookyear1922
