A fibre is a long and strong hair like strand obtained from natural sources or man-made sources. Fibres are classified into two type’s namely natural fibres and synthetic fibres. Natural fibres are further classified as plant fibres and animal fibres. Jute, cotton, etc. are some plant fibres whereas wool, silk, etc. are some animal fibres. The common synthetic fibres made by human-beings are rayon, nylon,etc. Wool is obtained from the fleece of wool yielding animals like sheep, yak, etc. which are used to make fabrics, jackets, shawls, etc. The processing of fibres to wool is done in nine steps which includes shearing, scouring, sorting, drying, carding, dying, roving, spinning and weaving. Some Indian breeds of sheep are Lohi, Rampur bushair, Nali, Marwari, etc. Silk is one of the most priced fabric. According to an old Chinese legend, silk was discovered by Chinese empress “Si-lung-Chi”. Silk fibres are animal fibres made of proteins. Silk is obtained from silkworms which are cultured on commercial scale to obtain silk. Silkworms are caterpillars of silk moth. The rearing of silkworms for obtaining silk is called sericulture. The life cycle of silk moth include eggs, larvae, pupa, cocoon and adult moth. Silk fibres from cocoons are separated out and reeled into silk threads and finally weavers weave silk threads into silk cloth.
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