@conference {40258,
	title = {Mating performance of Texel rams},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {50},
	year = {1990},
	month = {Jan},
	pages = {453-454},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {Romney, Coopworth and Perendale ewes were accidentally exposed to   facial eczema before May 1 hogget mating at 9 months of age. Serum   gamma-glutamyl transferase (GGT) levels of individual animals were   determined on 21 April. The ewes were divided into 3 classes for   analysis based on the GGT levels: 1.<100 IU/1;2. 100-350 IU/1; and   3.>350 IU/1. At all matings over 4 years the ewes in class 3 had a   lower fertility than class 1. These differences were only significant   at the hogget and two-tooth mating. The total number of lambs weaned   per ewe mated were class 1-5.0; class 2-4.4; and class 3-4.3 (P<0.1).   There were no lifetime effects on fleece weight.    },
	issn = {1176-5283},
	author = {Davis GH and Knight TW and Sorenson E and Shackell GH and Holmes MR and Farquhar PA}
}
