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RESEARCH ARTICLE
Contents Vol 46(7)

Inheritance of moisture content in greasy and clean wool and its relationship to other wool traits in Merinos

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) 933-936 https://doi.org/10.1071/EA05373
Submitted: 23 November 2005  Accepted: 4 May 2006   Published: 8 June 2006

Abstract

Moisture in greasy wool is associated with wool yellowing, fleece rot and fly strike, whereas the high moisture content of wool fabric is related to desired woollen fabric traits. This paper reports on a simple gravimetric method of determining greasy and clean wool moisture contents to determine fleece moisture heritability. The moisture index of greasy wool has a heritability of 0.37 ± 0.04 and phenotypic correlations of –0.31 ± 0.02 with yield, 0.69 ± 0.01 with suint index and 0.50 ± 0.01 with Methylene Blue absorption. The moisture index of greasy wool was strongly genetically correlated with yield (–0.48 ± 0.06), suint index (0.93 ± 0.03), Methylene Blue absorption (0.92 ± 0.03) but not significantly genetically correlated with clean wool moisture absorption (0.18 ± 044). Moisture absorption of clean wool has a very low heritability of 0.02 ± 0.03. The correlations between moisture index and suint index suggest that greasy fleece moisture index is primarily determined by suint index. The implications of variation in the moisture index of wool on fleece rot and fly strike are discussed.


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


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.

Dowling ME, Schlink AC, Greeff JC (2006) Wool weathering damage as measured by Methylene Blue absorption is linked to suint content. Australian Journal of Experimental Agriculture 46, 927–931.
| Crossref |
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)

Hayman RH (1953) Studies on fleece-rot of sheep. Australian Journal of Agricultural Research 4, 430–468.
| Crossref | GoogleScholarGoogle Scholar | open url image1

Hearle JWS (2002) Physical properties of wool. In ‘Wool: science and technology’. (Eds WS Simpson, GH Crawshaw) pp. 80–129. (CRC Press: Cambridge)

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

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)

James PJ, Ponzoni RW, Walkley RW, Smith DH, Stafford DE (1984) Preliminary estimates of phenotypic and genetic parameters for fleece rot susceptibility in the South Australian Merino. Wool Technology and Sheep Breeding 31, 152–157. open url image1

Leeder JD, Rippon JA (1985) Changes induced in the properties of wool by specific epicuticle modification. Society of Dyers and Colourists Journal 101, 11–16. open url image1

Lipson M, Hilton RA, Watts JE, Merritt GC (1982) Factors influencing fleece rot in sheep. Australian Journal of Experimental Agriculture and Animal Husbandry 22, 168–172.
| Crossref | GoogleScholarGoogle Scholar | open url image1

Raadsma HW (1989) Fleece rot and body strike in Merino wool. III Significance of fleece moisture following experimental induction of fleece rot. Australian Journal of Agricultural Research 40, 897–912.
| Crossref | GoogleScholarGoogle Scholar | open url image1

Raadsma HW, Thornberry KJ (1988) Relationship between wax, suint and fleece rot: effect of sample preparation, time of sampling and fleece rot induction. Australian Journal of Experimental Agriculture 28, 29–36.
| Crossref | GoogleScholarGoogle Scholar | open url image1

Raadsma HW, Gilmour AR, Paxton WJ (1988) Fleece rot and body strike in Merino sheep. I. Evaluation of liability to fleece rot and body strike under experimental conditions. Australian Journal of Agricultural Research 39, 917–934.
| Crossref | GoogleScholarGoogle Scholar | open url image1

Schlink AC, Ortego 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

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

Sumner RMW (2002) Factors associated with yellowing within Romney fleeces. Proceedings of the New Zealand Society of Animal Production 62, 61–64. open url image1

Wang G , Postle R , Zhang W , Phillips D (2000) Evaluation of wool shirt comfort using wear trials and the forearm test. In ‘The 10th international wool textile research conference’. FA-P9, pp. 1–10.

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