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Improvement of wool production and quality by the use of sheep rugs on Gansu Alpine Fine wool sheep in north-west China

Published online by Cambridge University Press:  27 March 2009

G. P. Davis
Affiliation:
CSIRO Division of Wool Technology, 1–11 Anzac Ave, Ryde, NSW 2112, Australia
Z.-F. You
Affiliation:
Lanzhou Research Institute of Animal Science, Xiaoxihu, Lanzhou, Gansu, Peoples' Republic of China
D. W. Crowe
Affiliation:
CSIRO Division of Wool Technology, 1–11 Anzac Ave, Ryde, NSW 2112, Australia
K. J. Whiteley
Affiliation:
CSIRO Division of Wool Technology, 1–11 Anzac Ave, Ryde, NSW 2112, Australia
H.-Z. Ma
Affiliation:
Lanzhou Research Institute of Animal Science, Xiaoxihu, Lanzhou, Gansu, Peoples' Republic of China
S.-Z. Song
Affiliation:
Huang Cheng Stud Farm, Huang Cheng, Gansu, Peoples' Republic of, China
B. J. McGuirk
Affiliation:
CSIRO Division of Animal Production, Box 239, Blacktown, NSW 2148, Australia

Summary

Fine wool in China is characterized by severe dust contamination and substantial tip weathering. In an attempt to improve wool quality, synthetic rugs were fitted to ewes and a range of raw wool characteristics was monitored. Two trials were carried out in successive years: a pilot trial (June 1985 to June 1986) involving 100 ewes wearing rugs and 75 controls, and a main trial (June 1986 to June 1987) involving 250 ewes with rugs and 250 controls. The rugs were fitted to ewes after shearing and remained on until shearing the following year. Wool from ewes with rugs was significantly better in almost all the characteristics measured (P <0·05) than wool from sheep without rugs. Clean fleece weight was improved by 15% over the two trials, yield and wax content were increased, and dust content and dust penetration were substantially reduced. Staple length and strength were increased, and dust content and dust penetration were substantially reduced in the main trial. Several style characteristics were measured using a prototype image analysis system and these also showed wool from sheep wearing rugs as being of better quality than wool from sheep in the control group. The only negative result was an increase in yellowness, in the greasy state only, due to the higher wax content in the sheep wearing rugs and the yellow nature of the wax of Gansu Alpine Finewool sheep – probably due to their genetic background. Wool from sheep wearing rugs would be expected to perform better in processing than wool from unrugged sheep.

Type
Animals
Copyright
Copyright © Cambridge University Press 1994

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References

Abbott, G. M. (1979). Rugging sheep with polyolefin fabrics: the benefits and economics. Wool Technology and Sheep Breeding 27, 2933.Google Scholar
Davis, G. P. & McGuirk, B. J. (1987). Genetic relationships between clean wool weight, its components and related skin characters. In Merino Improvement Programs in Australia (Ed. McGuirk, B. J.), pp. 189206. Melbourne: Australian Wool Corporation.Google Scholar
Davis, G. P. & Piper, L. R. (1989). ACIAR Project 8456 – Sheep Breeding for Improved Wool Quality in Northwest China. CSIRO Division of Wool Technology Working Paper.Google Scholar
Douglas, S. A. S. (1989). TEAM project – presentation of report on Trials Evaluating Additional Measurements 1981–1988. Wool Technology and Sheep Breeding 37, 5662.Google Scholar
Gilmour, A. (1985). REG – A Generalised Linear Models Program. Miscellaneous Bulletin No. 1 (2nd Edition), Division of Agricultural Services, Department of Agriculture, New South Wales.Google Scholar
Lipson, M., Ellingworth, J. S. & Sinclair, J. F. (1970). Effect of sheep-rugging on fleece properties and processing of wool. Textile Institute and Industry 8, 100102.Google Scholar
Ma, H.-Z. (1989). Gansu Alpine Finewool Sheep – a brief breeding history. In ACIAR Project 8456 – Sheep Breeding for Improved Wool Quality in North-west China (Eds Davis, G. P. & Piper, L. R.), pp. 1417. CSIRO Division of Wool Technology Working Paper.Google Scholar
McGuirk, B. J., Davis, G. P. & Whiteley, K. J. (1988). Sheep breeding research in China – the ACIAR project. Wool Technology and Sheep Breeding 36, 2832.Google Scholar
Mooy, L. R.&Bow, M. R. (1989). The processing prediction of individual sale lots and wool types. Wool Technology and Sheep Breeding 37, 1519.Google Scholar
Panaretto, B. A., Hutchinson, J. C. D. & Bennett, J. W. (1968). Protection afforded by plastic coats to shorn sheep. Proceedings of the Australian Society of Animal Production 7, 264269.Google Scholar
Rottenbury, R. A., Andrews, M. W. & Brown, G. H. (1983). Association between raw wool characteristics and processing to top. Textile Research Journal 53, 2935.Google Scholar
Smith, L. J.& Hoschke, B. N. (1982). Mini-processing as an assessment technique. Journal of the Textile Institute 72, 264271.CrossRefGoogle Scholar
Walls, G. W. (1963). Distribution of staple tip in worsted processing of some Merino wools. Journal of the Textile Institute 54, T7987.CrossRefGoogle Scholar
Walls, G. W. (1974). Wool characteristics of processing importance. Wool Technology and Sheep Breeding 21, 2731.Google Scholar
Wheeler, J. L., Hedges, D. A. & Mulcahy, C. (1977). The use of dyebanding for measuring wool production and fleece tip wear in rugged and unrugged sheep. Australian Journal of Agricultural Research 28, 721735.Google Scholar
Winston, C. R. (1989). Objective measurement and processing consequences of style and type. Wool Technology and Sheep Breeding 37, 2732.Google Scholar
Wright, R. D., Crowe, D. W. & Rottenbury, R. A. (1990). The objective measurement of style and type. In Proceedings of the Eighth International Wool Textile Research Conference, Vol. II. Raw materials specification, other animal fibres (Ed. Crawshaw, G. H.), pp. 5867. Auckland: Wool Research Organization of New Zealand.Google Scholar