@conference {41049,
	title = {Unravelling the causes of wool yellowing: Part I Involvement of a water soluble component},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {58},
	year = {1998},
	month = {Jan},
	pages = {274-276},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {The change in yellowness (D Y-Z) of wool samples maintained in an environment intended to stimulate yellow discolouration was determined in two experiments. In the first experiment, DY-Z was determined following one of six treatments - no extraction (control), solvent wax extraction (-W), aqueous suint extraction (-S), extraction of wax and suint (-WS), removal then reapplication of wax and suint (+WS), or detergent washing (D). Removal and reapplication of wax and suint, or removal of wax alone resulted in similar yellowing to the control (D Y-Z mean{\textpm}SD); (control 1.6{\textpm}1.2; +WS 1.5{\textpm}2.8, p = 0.92; -W 2.1{\textpm}1.3, p = 0.37). Detergent scouring, and removal of suint, or both wax and suint, reduced wool yellowing (D 0.6{\textpm}2.2, p = 0.24; -S 0.5{\textpm}1.6, p = 0.09; -WS 0.3{\textpm}1.3, p = 0.04). In the second experiment, greasy wool from two chimaeric sheep producing both Lincoln and Merino wool types yellowed to a similar extent (Y-Z post challenge; mean{\textpm}SD) (Lincoln 7.3{\textpm}1.5; Merino 6.5{\textpm}1.1; p = 0.45), suggesting that the fleece environment influences the propensity for yellow discolouration when distinct wool types are grown together. The data presented here support the hypothesis that a water soluble component of the fleece is involved in wool yellowing. },
	issn = {1176-5283},
	author = {Winder L and Rea A and Scobie D and Bray A}
}
@conference {40589,
	title = {The processing of different staple strength wools},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {54},
	year = {1994},
	month = {Jan},
	pages = {159-162},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {Wool from lines of Romney sheep selected for high and low staple  
strength and a randomly selected control line were processed into worsted yarn  
for handknitting (ewe hogget fleeces) and semi-worsted yarn for carpets (adult  
ewe fleeces).  Separate lots of wool were created for each line with the fleeces  
chosen to ensure that the lots had similar mean fibre diameter, staple length 
and medullation.  Hogget wool yarns were knitted into panels and the adult ewe  
wool yarns were tufted into carpet. 
 
In the hogget wool processing trial, increased staple strength was associated  
with greater mean length after carding and higher combing yields, with small  
improvements in yarn tenacity and in knitted panel abrasion and pilling test  
results. 
 
The adult ewe wool processing trial also produced a significant difference in  
length after carding.  At high spindle speeds the high strength line performed  
better in spinning, producing fewer "end-breaks". 
 
The trials indicate there are real advantages for worsted and semi-worsted  
processing and product performance, warranting premiums for high strength  
wools. 
 },
	issn = {1176-5283},
	author = {Maddever DC and Scobie D and Bray A}
}
