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RESEARCH ARTICLE
Contents Vol 46(7)

Wool weathering damage as measured by Methylene Blue absorption is linked to suint content

M. E. Dowling A C , A. C. Schlink B and J. C. Greeff A
+ Author Affiliations
- Author Affiliations

A Western Australian Department of Agriculture, 10 Dore Street, Katanning, WA 6317, Australia.

B CSIRO Livestock Industries, Private Bag 5, Wembley, WA 6913, Australia.

C Corresponding author. Email: mdowling@agric.wa.gov.au

Australian Journal of Experimental Agriculture 46(7) 927-931 https://doi.org/10.1071/EA05364
Submitted: 23 November 2005  Accepted: 3 May 2006   Published: 8 June 2006

Abstract

Weather damage of wool in grazing sheep has long been recognised by the wool industry as a problem, resulting in fibre damage, fibre loss and poor dyeing performance. Merino wool from 3538 ewe and ram hoggets was used to estimate the heritability of Methylene Blue absorption. Methylene Blue absorption has a high heritability of 0.44 ± 0.04 and was strongly genetically correlated with suint index (0.88 ± 0.02) and wool moisture index (0.92 ± 0.03). Methylene Blue absorption was moderately genetically, negatively correlated with measures of clean wool colour and yield and positively with dust penetration. There was no significant correlation between Methylene Blue absorption and dust content or economically important measures of fleece value such as fibre diameter, curvature and staple strength. The strong genetic relationship between Methylene Blue absorption and suint index indicates that Methylene Blue absorption is a very good indirect measure of greasy wool suint content but may not be a satisfactory indicator trait to select for low weather damage.


Acknowledgments

The authors wish to knowledge the technical support of Anne Murray and the staff at Katanning for maintenance of the Resource flocks. This project was partially funded by the Australian Sheep Industries Cooperative Research Centre.


References


Aitken FJ, Cottle DJ, Reid TC, Wilkinson BR (1994) Mineral and amino acid composition of wool from New Zealand Merino sheep differing in susceptibility to yellowing. Australian Journal of Agricultural Research 45, 391–401.
| Crossref | GoogleScholarGoogle Scholar | open url image1

Anon. (1965a) Weathering in wool: part 1. Wool Science Review 27, 27–34. open url image1

Anon. (1965b) Weathering in wool: part 2. Physical, physico-chemical and mechanical effects of weathering. Wool Science Review 28, 12–21. open url image1

Anon. (1966) Weathering in wool: part 3. The chemical effects of weathering. Wool Science Review 29, 33–44. open url image1

AS/NZS (2000) Australian/New Zealand Standard, AS/NZS 4492.2.2000: Wool-fleece testing and measurement. Method 2: determination of washing yield and clean fleece weight. Australia/New Zealand.

Brims M (1997) Along fibre diameter and cleaniness measurement using OFDA. International Wool Textile Organisation Technical and Standing Committee, Meeting May 1997, Report No. 23, Boston.

Brook AH, Short BF (1960) Sweating in sheep. Australian Journal of Agricultural Research 11, 557–569.
| Crossref | GoogleScholarGoogle Scholar | open url image1

Charlesworth DH (1970) A study of dust contamination in Merino wool in low rainfall areas. Masters Thesis, University of New South Wales, Sydney, Australia.

Dowling ME, Schlink AC, Greeff JC (2005) Dust penetration is not genetically and phenotypically the same trait as dust content: 3 years of data. Proceedings of the Association for the Advancement of Animal Breeding and Genetics 16, 68–71. open url image1

Gilmour AR , Gogel BJ , Cullis BR , Welham SJ , Thompson R (2002) ‘ASREML user guide. Release 1.0.’ (VSN International Ltd.: Hemel Hempstead)

Gordon AJ, Engel H (1980) The staple strength of belly wool and the role of suint and wax. Wool Technology and Sheep Breeding December, 37–39. open url image1

Hemsley JA, Marshall JTA (1984) A column extraction method for the estimation of wax and suint in raw wool. Wool Technology and Sheep Breeding 31, 145–163. open url image1

Holt LA, Jones LN, Stapleton IW (1990) Interactions between wool weathering and dyeing. Proceeding of the 8th International Wool Textile Research Conference 4, 117–126. open url image1

Holt LA, Lax J, Moll L (1994) The effect of weathering and weathering control measures on the colour of scoured wool. Wool Technology and Sheep Breeding 42, 151–159. open url image1

IWTO (1996) International Wool Textile Organisation. IWTO-52–96. Conditioning procedures for textile testing. Nice, France.

IWTO (1998) International Wool Textile Organisation. IWTO-30–98. Determination of staple length and strength. Nice, France.

Jackson N (1973) A review of the wax/suint ratio of fleeces and its relationship to colour, fleece rot, dermatitis, blowfly strike and tip weathering. In ‘Special conference on breeding aims in the light of recent developments and technology’. pp. 44–58. (University of New South Wales: Sydney)

Schlink AC, Ortega S, Greeff JC, Dowling ME (2006) Inheritance of Acid Red 1 dye absorption and its relationship to other Merino wool traits. Australian Journal of Experimental Agriculture 46, 943–946. open url image1

Schrieber J (1990) Microlevelness of wool. What’s involved? Australasian Textiles 1, 49. open url image1

Steenkamp CH, Venter JJ, Edwards WK (1970) Seasonal effect of weathering of wool. Agroaninalia 2, 127–130. open url image1

Taylor PJ, Gilmour AR, Crowe DW, Jackson N, Atkins KD (1997) Genetic parameters for objectively measured style traits of Merino fleeces. Proceedings of the Association for the Advancement of Animal Breeding and Genetics 12, 149–152. open url image1

Truter EV, Woodford FP (1955) The protective action of wool wax and suint against the photolysis of wool. Journal of the Textile Institute 46, T641–T652. open url image1

Venter JJ, Nel JW, Edwards WK (1977) Effect of sheltering on the weathering of wool. Agroanimalia 9, 45–51. open url image1

Walls GW (1963) Distribution of staple tip in worsted processing of some Merino wools. Journal of the Textile Institute 54, T74–T87. open url image1

Wood E (2002) The basics of wool colour measurement. Wool Technology and Sheep Breeding 50, 121–132. open url image1