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Animal fibers are natural fibers that consist largely of certain proteins. Examples include silk, hair/fur (including wool) and feathers. The animal fibers used most commonly both in the manufacturing world as well as by the hand spinners are wool from domestic sheep and silk. Also very popular are alpaca fiber and mohair from Angora goats.
Animal fibers generally comprise proteins such as collagen, keratin and fibroin; examples include silk, sinew, wool, catgut, angora, mohair and alpaca.. Animal hair (wool or hairs): Fiber or wool taken from animals or hairy mammals. e.g. sheep's wool, goat hair (cashmere, mohair), alpaca hair, horse hair, etc.
Textile fibres or textile fibers (see spelling differences) can be created from many natural sources (animal hair or fur, cocoons as with silk worm cocoons), as well as semisynthetic methods that use naturally occurring polymers, and synthetic methods that use polymer-based materials, and even minerals such as metals to make foils and wires.
Mohair fiber is approximately 25–45 micrometres in diameter. [2] It expands in diameter with the age of the goat, growing along with the animal. Finer, softer hair from younger animals is used (for example) in scarves and shawls; the thicker, coarser hair from older animals is more often used for carpets and in heavy fabrics intended for ...
the average diameter of the fiber of such wool product does not exceed 19 microns; and; such wool product does not contain more than 3 percent (by weight) of cashmere fibers with average diameters that exceed 30 microns. the average fiber diameter may be subject to a coefficient of variation around the mean that shall not exceed 24 percent. [10]
Alpaca fiber is similar in structure to sheep wool fiber. The fiber softness comes from having a different smoother scale surface than sheep wool. American breeders have enhanced the softness by selecting for finer fiber diameter fiber, similar to merino wool. Fiber diameter is a highly inherited trait in both alpaca and sheep.
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Guanaco fiber is particularly prized for its soft, warm feel and is found in luxury fabric. In South America, the guanaco's soft wool is valued second only to that of vicuña wool. The pelts, particularly from the calves, are sometimes used as a substitute for red fox pelts, because the texture is difficult to differentiate.