http://livestocklibrary.com.au/handle/1234/3531 2026-04-07T03:25:05Z 2026-04-07T03:25:05Z http://livestocklibrary.com.au/handle/1234/4340 2012-03-12T13:28:43Z 0001-01-01T00:00:00Z

The Role of The University of New South Wales in the Advances in Wool Technology and Sheep Breeding since 1951 The University of New South Wales established a School of Wool Technology in 1951 and more than 600 degrees and diplomas were awarded before the activity was closed down in 1997 because of financial pressures on the University. Despite several changes of name the primary objective continued to be the provision of education and research for the benefit of the pastoral industries that produced wool and red meat. Staff, students and graduates made very significant contributions to the revolution in wool marketing which began with the introduction of objective measurements of wool quality and to advances in animal breeding and genetics. Some of these contributions are reviewed.

0001-01-01T00:00:00Z http://livestocklibrary.com.au/handle/1234/4338 2012-03-12T13:28:43Z 0001-01-01T00:00:00Z

Relationship between Birthcoat Halo-hair and Medullated Fibres in Merino and Damara Crossbred Lambs Wool \"OFDA100 was used to assess the levels of medullated fibres in Merino lambs wool and determine relationships with scores for birthcoat halo-hair. For a contrast, wool from Damara x Merino lambs was also measured. There were relatively few objectionable fibres detected in Merino compared with the crossbred wool (means 0.6 to 1.1 v. 98 to 103 per 10,000 fibre snippets). Little relationship existed between the counts of objectionable medullated fibre and the birthcoat halo-hair score. However, halo-hair score was positively correlated with the levels of flat medullated fibres, standard deviation and coefficient of variation of fibre diameter. At this stage, there is no evidence that substantiates a need for specific selection against medullation in Merino wool. However, it is recognised certain crossbreeding situations lead to wool contamination that requires specific bale branding and declaration to warn wool buyers. \"

0001-01-01T00:00:00Z http://livestocklibrary.com.au/handle/1234/4336 2012-03-12T13:28:43Z 0001-01-01T00:00:00Z

A Note on the Association of Measurement Precision with Average Fibre Diameter in On-farm Fibre Measurement Direct and indirect estimates of measurement precision (95% confidence interval) of fibre diameter were assembled from published sources. There was a significant association between precision and average diameter (regression = 0.11±.014 per micron increase in diameter). Appropriate precision values according to average diameter are tabled.

0001-01-01T00:00:00Z http://livestocklibrary.com.au/handle/1234/4334 2012-03-12T13:28:43Z 0001-01-01T00:00:00Z

Fractionation of Coloured Substances from Discoloured New Zealand Crossbred Wool Research with a variety of New Zealand wools showed that the compounds responsible for non-scourable canary yellow discoloration are N-formylkynurenine and kynurenine, together with dityrosine and other unidentified phenolic compounds. This confirms the results of several other research groups who have worked on discoloured Merino wool. These compounds, which can result from microbial- or photo-oxidation of the amino acids tryptophan and tyrosine, are covalently bound within the wool fibre. The compounds were removed from the wool by either chemical fractionation of the wool proteins or enzymatic digestion. Chemical fractionation of the wool proteins indicated that the proteins associated with the yellow discoloration were the high tyrosine type II proteins found in the matrix of the ortho-cortical cells.

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