@conference {39748,
	title = {The effect of daily infection with O. circumcincta larvae on the performance of pregnant and lactating sheep},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {41},
	year = {1981},
	month = {Jan},
	pages = {279-282},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	issn = {1176-5283},
	author = {Leyva V and Henderson AE and Sykes AR}
}
