@conference {40425,
	title = {Effect of physical parameters on ram spermatozoal motility},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {52},
	year = {1992},
	month = {Jan},
	pages = {251-254},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {Local sympathectomy was achieved by injecting 6-hydroxydopamine  into the dermis at two sites on the right midside of each of three  Merino wethers. Saline was injected into matching sites on the left  midside. After one week, noradrenaline was injected into one site on  each side and saline into the other. Colchicine was administered into  all sites immediately after noradrenaline, skin biopsies removed from  each site two hours later and histological preparations assessed for the  accumulation of mitoses in wool follicles.   Compared with saline treated sites, noradrenaline significantly  depressed the number of accumulated mitoses at control and  sympathectomised sites by 34 and 36\% respectively (P=0.002). A  pharmacological dose of noradrenaline therefore has the potential to  reduce wool production. Sympathectomy increased mitotic rate at saline  and noradrenaline treated sites by 16 and 18\% respectively, although  this increase was not significant at the 5\% level (P=0.0094). Elevation  of mitotic activity via elimination of endogenous sources of  noradrenaline may help to explain the mechanism by which surgical  sympathectomy has previously been reported to increase wool production.  },
	issn = {1176-5283},
	author = {Upreti GC and Oliver J and Munday R and Smith JF}
}
