O o d h e a d p u b L i s h I n g L i m I t e d

9.7
Sources of further information and advice
The evolution of sheep and wool colour is described in detail in two papers
by Ryder (1987, 1980) and wool colour genetics is reviewed in Sponenberg’s
chapter in The Genetics of Sheep (Sponenberg, 1997). There are also a
number of useful websites on current research into sheep and wool genetics,
including:
http://www.sheepgenomics.com/
 (Sheep Genomics)
http://www.sheepgenetics.org.au/
 (Sheep Genetics Australia)
http://www.agwine.adelaide.edu.au/animal/skin/
 (University of Adelaide)
http://www.sardi.sa.gov.au
 (South Australian Research and Development
Institute) 
http://www.sheepcrc.org.au/
 (Cooperative Research Centre (CRC)
for Sheep Industry Innovation). This CRC commenced a seven-year project
aimed at improving wool colour and photostability in July 2007.
http://www.wool.com.au/
 (Australian Wool Innovation)
Useful online information on wool colour measurement is available from
http://www.awta.com.au/en/Home/Our_Services/Average-Yellowness/
(Australian Wool Testing Authority) and from 
http://www.wooltesting.sgs.com
(SGS Wool Testing Services, New Zealand).
There is a helpful and comprehensive ‘Whiteness Primer’ available for
download, to assist understanding the concepts of colour measurement in
general and whiteness in particular. 
http://www.axiphos.com/Reports/
reports.html
© 2009 Woodhead Publishing Limited

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There are a large number of excellent reviews on wool photoyellowing.
There is a comprehensive recent (2006) two-part review that gives a very
detailed description of the chemistry, instrumental methodology and
mechanisms involved, and cross-references most of the extensive literature
in this field (Millington, 2006b,c).