wool(redirected from wool depigmentation)
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The hair of the sheep; sometimes, when defatted, used as a surgical dressing.
the natural fiber produced by the skin of domesticated sheep, characterized by its quality of felting together by virtue of its imbricated surface.
inherited coat color in sheep.
the state of having excess wool growth around the eyes to the point where the sheep is unable to see.
break in wool
see wool break.
wool suitable for the woollen trade.
coarse low-grade wool, used in the manufacture of carpets.
see wool classing.
the basis on which the price of wool is set; scoured wool less charges and loss incurred in scouring.
long-fibered wool suitable for processing in a combing machine. Used in textile manufacture, especially worsted.
colored wool fibers
naturally colored fibers in a fleece.
wool plucked from a sheep which has been dead for some time; usually heavily contaminated and of little value.
staples carrying many fibers per unit area of skin surface.
unevenly or poorly crimped wool; found in old sheep.
eating of rabbits' wool by other rabbits, or wool from garments by cats causes intestinal wool balls and obstruction of the gut. May be a manifestation of pica due to boredom.
wool fiber abnormalities
includes straight, steely wool, wool break, pigmentation, achromotrichia in black sheep.
wool fiber diameter
thickness of the fiber; wool is sold on the basis of the average fiber diameter of the wool in the lot as determined by a machine and quoted in microns (micrometers); a more sophisticated classification is made on the basis of the average fiber diameter and the variability of the diameter.
wool in its natural state, after removal from the sheep and before any commercial processing; contains yolk, suint, moisture, extraneous soil and vegetable matter.
the soft undercoat fibers in most cats and dogs, interspersed with the longer guard hair; the predominant fiber type in sheep.
first fleece from a 10 to 14 month old sheep which has not been previously shorn.
hunger fine wool
wool with a finer fiber diameter than expected for the sheep's age; caused usually by poor nutrition.
includes sheep farming, shearing, wool sales, wool processing and fiber and fabric manufacture.
see cutaneous myiasis.
pulling at the wool of another sheep. It may be a vice due to over-confinement, or to an unspecified nutritional deficiency. Biting of another sheep as occurs in rabies may be confused with wool picking but not for long.
straight wool lacking crimp and character.
wool processing effluent
liquid effluent from wool processing; has been a source of infection with anthrax.
pulling by the sheep of its own wool, usually an indication of itchiness. See also psorergatesovis.
the British standard for wool quality is based on the Bradford Spinning Count System and the wool qualified as to its Bradford Count. This originated in the 19th century and is based on the number of 560-yard worsted skeins that can be produced from one pound of clean wool; larger numbers mean finer wool.
see fleece rot.
the sheep rubs its fleece against a hard object. Usually an indication of itching caused by external parasites or to a systemic disease with manifestations in the skin. See also scrapie.
alopecia of housed ewes that are shorn in winter. The wool is lost over a large area of the back. There is no systemic illness and the wool regrows normally. The cause is unknown but the condition appears to be related to a high level of serum corticosteroids.
a vice of cats, particularly Siamese and Siamese crosses, in which they suck or chew woollen objects. Believed to be an extension of sucking behavior.
wool which will break during the combing process in manufacturing.
see fleece weight.
the percentage of raw wool that can be retrieved from processing in a state suitable for the particular type of production which is in hand, e.g. carpet making.