Indices for cashmere fleece competition and across farm comparisons: The role of staple length in identifying goats of higher cashmere production

Butler,KL and McGregor,BA 2014, Indices for cashmere fleece competition and across farm comparisons: The role of staple length in identifying goats of higher cashmere production, Small Ruminant Research, vol. 121, no. 1, pp. 131-135, doi: 10.1016/j.smallrumres.2013.11.011.

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Title Indices for cashmere fleece competition and across farm comparisons: The role of staple length in identifying goats of higher cashmere production
Author(s) Butler,KL
McGregor,BAORCID iD for McGregor,BA orcid.org/0000-0002-4574-4236
Journal name Small Ruminant Research
Volume number 121
Issue number 1
Start page 131
End page 135
Total pages 5
Publisher Elsevier
Place of publication Amsterdam, The Netherlands
Publication date 2014
ISSN 0921-4488
Keyword(s) Farm benchmarking
Farmer skills
Fleece evaluation
Fleece weight
Science & Technology
Life Sciences & Biomedicine
Agriculture, Dairy & Animal Science
Agriculture
SUPERFINE MERINO WOOL
GENETIC-PARAMETERS
AUSTRALIAN GOATS
FIBER DIAMETER
ATTRIBUTES
SELECTION
INHERITANCE
TRAITS
SHEEP
Summary A single focus on mean fibre diameter (MFD, μm) as the definition of cashmere quality overlooks the effects of fibre length, softness and fibre curvature on cashmere processing, textile quality and consumer acceptance. Many farmers overlook the importance of cashmere staple length (SL, cm) in their fleece assessments. We aimed to determine the importance of SL in comparison with MFD when evaluating cashmere production and to identify how across farm comparisons of cashmere fleeces can be objectively undertaken. A sample of 1244 commercial cashmere fleeces from goats originating from many Australian farms was used. Least squares models, relating the logarithm of clean cashmere production (CCMwt, g) to MFD and SL, were fitted. Six years of data from the Australian cashmere industry between farm fleece competitions were analysed to determine the relation between CCMwt and MFD. In the research flocks, adjusting CCMwt of individual goats across farms for MFD only accounted for 2% of the variance, whereas SL accounted for 39% of the variance. The least squares additive model involving only SL was: log10(CCMwt)=1.570+0.06010×SL. Thus CCMwt was proportional to: 100.06010×SL=1.1484SL. It was appropriate to adjust CCMwt for SL by a factor 1/1.1484(SL-SL0) where SL0 is a standard SL of 7.5cm. The between farm index for cashmere weight equals: cleancashmerestaplelengthindex=2.823×CCMwt/1.1484SL. For industry fleece competitions, regression analysis indicated that there was no association between cashmere production and MFD (P=0.81), similar to the research data. Adjusting CCMwt for MFD in across farm comparison and fleece competitions appears to be ineffective. For farm comparisons and in fleece competitions it is important to assess cashmere SL. The use of the Clean Cashmere Staple Length Index will provide a more robust comparison of cashmere productivity between farms as it is an indirect indicator of desirable skin secondary follicle development. The results have application in development projects where obtaining a cashmere MFD test is costly or unavailable. © 2013 Elsevier B.V.
Language eng
DOI 10.1016/j.smallrumres.2013.11.011
Field of Research 070202 Animal Growth and Development
070201 Animal Breeding
070299 Animal Production not elsewhere classified
Socio Economic Objective 830304 Goats
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2014, Elsevier
Persistent URL http://hdl.handle.net/10536/DRO/DU:30069693

Document type: Journal Article
Collection: Institute for Frontier Materials
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