@conference {41714,
	title = {Hair whorl patterns are related to age at puberty and milk-production traits in dairy cattle},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {67},
	year = {2007},
	month = {Jan},
	pages = {130-135},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	address = {Wanaka},
	abstract = {The objective of this study was to measure facial hair whorl characteristics of Friesian-Jersey crossbred cows (n=658) and to investigate their association withmeasures of milk production, fertility and behaviour. Cows had 1 (n=581), 2 (n=10), 3 (n=1) or no facial hair whorls (n=66). Of those cows with one whorl, 66\% had whorls in the middle of the head, whereas 21\% had whorls low on their head and 13\% high on their forehead. Round whorls were present on 77\% of cows, while 23\% had non-round whorls. Fifty five percent of cows with round whorls were recorded as havinganticlockwise rotation and 16\% of cows as clockwise rotation. Cows with high hair whorlstended to reach puberty earlier on average than cows with lower whorls (P=0.07). Cows with higher non-round whorls also produced lower total milk and total solid yields, than cows with low whorls (P=0.01). No relationship was found between hair whorl characteristics and behaviour in this study.},
	issn = {1176-5283},
	author = {Young SK and McNaughton LR and Spelman RJ}
}
