@conference {42009,
	title = {Testing glutathione-S-transferase for an association with facial eczema resistance in cattle},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {67},
	year = {2007},
	month = {Jan},
	pages = {361-364},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	address = {Wanaka},
	abstract = {Resistance to facial eczema (FE) in cattle is known to be a heritable trait. The commonly used indicators of susceptibility in affected groups of animals are gamma glutamyl-transferase (GGT) and glutamate dehydrogenase (GDH), which indicate the severity of the liver injury associated with FE. Published research using mouse models suggests that glutathione-S-transferase (GST) may be a downstream indicator of variation in FE susceptibility, and a study was carried outin calves to test this. Friesian-sired and Jerseysired bull calves were purchased from dairy herds in spring 2004, artificially reared from about four days of age, weaned at 75-80 kg, monitored for base-line GGT activity in blood, and then dosed orally with sporidesmin. At 14 and 21 days after dosing, blood samples were taken to measure the activities of both GDH and GGT. A sample of 45 Friesian calves and 45 Jersey calves from the high and low outliers (using GDH activity within breed, 14 days after dosing) wereblood-sampled 15 or 16 days after dosing and measured for GST activity, with 20-25 animals sampled each day, in balanced groups. There were significant differences in GST activity between high and low GDH groups (P < 0.01), and the pooled within-analysisday regression of GST activity on logGGT activity (day21) was negative (P < 0.05). Results confirmed that low erythrocytic GST activity is an indicator of FEsusceptibility, although the differences seen between resistant and susceptible animals are insufficient for use as a predictive tool.},
	issn = {1176-5283},
	author = {Morris CA and Cullen NG and Munday R}
}
@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}
}
@conference {39861,
	title = {Effect of antioxidants on the toxicity of the facial eczema toxin, sporidesmin, in sheep},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {43},
	year = {1983},
	month = {Jan},
	pages = {209-212},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {Zinc sulphate (0.35 g Zn/litre) in the drinking water of lactating dairy cows prevented the effects of both a mild natural spore challenge and the subsequent severe challenge of dosed sporidesmin. The changes recorded (serum gamma glutamyl transferase, liver and urinary bladder injury score, daily milk production and clinical and live weight changes) in the unprotected control group indicate considerable toxic injury whereas the changes in the group receiving zinc in drinking water were minimal indicating excellent protection. Water consumption records for the 2 groups did not indicate that the zinc treated water was substantially discriminated against.},
	issn = {1176-5283},
	author = {Munday R and Manns E and Mortimer PH}
}
