@conference {40216,
	title = {The future impact of new opportunities in reproductive physiology and molecular biology on genetic improvement programmes},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {50},
	year = {1990},
	month = {Jan},
	pages = {197-210},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {During the serious outbreak of facial eczema (FE) in 1989, blood   samples were obtained from first-lactation heifers born in 1986, in   order to study any genetic influence on the incidence of FE. Heifers   were located in 60 herds in Northland (14 herds), Auckland (25) and   Taranaki (21). The herds were members of the New Zealand Dairy Board{\textquoteright}s   1985 Sire Proving Scheme for young Jersey bulls. Samples were collected   from 1523 heifers, the daughters of 57 young Jersey sires and 19 other   Jerseys including reference sires from previous years. Blood samples   were analysed for gamma-glutamyltransferase (GGT), an indicator of liver   damage such as due to FE. Overall, 28\% of animals had elevated GGT   values (>=30IU/1), and 72\% (43) of herds had 2 or more animals with   elevated GGT. After setting aside data from the 17 herds where no   elevations of GGT concentration were recorded, the heritability of log e   GGT was 0.31},
	issn = {1176-5283},
	author = {Baker RL and Shannon P and Garrick DJ and Blair HT and Wickham BW}
}
