@conference {40650,
	title = {Effect of once-daily milking and bovine somatropin administration in Friesian cows on milk protease activity},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {55},
	year = {1995},
	month = {Jan},
	pages = {7-8},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {Samples of wool from Perendale hoggets born at Whatawhata  Research Centre in 1989 from ewes selected for and against loose wool  bulk were tested for propensity to yellow. After storage in a  laboratory for two years, wool from the high bulk line was significantly  more yellow than wool from low bulk line.    When the greasy wool was incubated at 40 degrees and 100\% relative  humidity, differences in all three tristimulus values between high and  low bulk wool were significant.    Tristimulus Y and Z decreased and Y minus Z increased when clean wool  samples were subjected to more extreme challenges similar to those which  may occur during processing. These changes did not affect the  differences in colour between the selection lines.    These results suggest that management changes may be required to  restrict yellowing of high bulk wool during growth and storage.  Simultaneous selection for reduced propensity to yellow and increased  bulk may reduce the genetic progress attainable in either  characteristic.   },
	issn = {1176-5283},
	author = {Stelwagen K and Whyte JH and Zavizon B and Prosser CG and Davis SR and Farr VC and Politis I}
}
