Biology, asked by mayank178987, 11 months ago

how do we get wool fibres from sheep explain ​

Answers

Answered by abhiram7593051734
1

Wool

Wool comes from sheep, goat, yak and some other animals. These wool-yielding animals bear hair on their body because hair keeps these animals warm and wool is derived from these hairy fibres.

The hairy skin of the sheep has two types of fibres that form its fleece: (i) the coarse beard hair, and (ii) the fine soft under-hair close to the skin. 

Some breeds of sheeppossess only fine under-hair. Theirparents are specially chosen to give birthto sheep which have only soft under hair.This process of selecting parentsfor obtaining special characters in theiroffspring, such as soft under hair insheep, is termed ‘selective breeding’. 

Animals That Yield Wool

The fleece of sheep is not the only source of wool, though wool commonly available in the market is sheep wool.

Yak wool is common in Tibet and Ladakh and Angorawool is obtained from angora goats, found in hilly regions such as Jammu and Kashmir. 

Wool is also obtained from goat hair. The under fur of Kashmiri goat is soft and It is woven into fine shawls called Pashmina shawls.

The fur (hair) on the body of camels is also used as wool.  Llamaand Alpaca, found in South America,also yield wool. 

From Fibres To Wool

For obtaining wool, sheep are reared.Their hair is cut and processed into wool.

Rearing and breeding of sheep :  

 Apart from grazing sheep, rearers also feed them on a mixture of pulses, corn, jowar, oil cakes (material left after taking out oil from seeds) and minerals and In winter, sheep are kept indoors and fed on leaves, grain and dry fodder.

Sheeps are reared  in many parts of our country and Certain breeds of sheep have thick coat of hair on their body which yieldsgood quality wool in large quantities.

Once the reared sheep have developed a thick growth of hair, hair is shaved off for getting wool.

Processing Fibres Into Wool

Wool that is used for knitting sweaters and for weaving shawls is the product of a long process involving the following steps : 

Step 1- 

The fleece of the sheep along with a thin layer of skin is removed from its body. This process is called shearing. 

Usually, hair are removed during the hot weather which enables the sheep to survive without their protective protective coat of hair. 

The hair provide woollen fibres and Woollen fibres are then processed to obtain woollen yarn. 

Step 2- 

The sheared skin with hair is thoroughly washed in tanks to remove grease, dust and dirt. This is called Scouring. Nowadays, scouring is done by machines. 

Step 3- 

After scouring, Sorting is done. The hairy skin is sent to a factory where hair of different textures are separated or sorted. 

Step  4-

The small fluffy fibres, called burrs, are picked out from the hair. The fibres are scoured again and dried and the wool is ready to be drawn into fibres.

Step 5- 

The fibres can be dyed in various colours, as the natural fleece of sheep and goats is black, brown or white. 

Step 6- 

The fibres are straightened, combed and rolled into yarn and the longer fibres are made into wool for sweaters and the shorter fibres are spun and woven into woollen cloth.

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Answered by rtrajan1254
22

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