PROPERTIES OF UAS SHEEP BREED WOOL
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Date
1999-09-09
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UNIVERSITY OF AGRICULTURAL SCIENCES GKVK BANGALORE
Abstract
The present study was conducted during 1997-98. The wool samples of UAS sheef
breed of spring clip and autumn clip were collected from the Department of Animal Science, University
of Agricultural Sciences, Dharwad. The samples were tested for morophology, solubility and physical
properties. The UAS sheep breed wool properties were compared with native Deccani wool (mixed
clip). Results revealed that majority of the fibres of UAS sheep breed wool had annular type scale
structure, circular, finer in diameter and non-medullated. The UAS crossbred wool had 56.19 mm
fibre length, 47.53 mm staple length, 20.00 per cent fibre crimp, 31.64 p fibre diameter, 34.00 per
cent meduliation and 10.17 g/tex fibre bundle strength. Non medullated fibres had lesser fibre
diameter as compared to partially medullated and coarsely medullated fibres. The fibre diameter
was decreased with decrease in meduliation percentage. Yarn fineness was improved (3.30 Nm)
where as single yam strength and yam elongation at break were reduced. Fibre and yam properties
were higher in the autumn clip than in the spring clip. The UAS sheep breed wool fibres were
resistant to sodium carbonate, hydrochloric acid, acetic acid, organic solvants and bleaching agents,
but partially soluble in sodium hydroxide and completely soluble in sulfuric acid. There was
improvement of UAS sheep breed over native Deccani in fibre diameter, meduliation, fibre crimp
and yarn count, but reduction was observed in fibre bundle strength and yam elongation at break
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