@conference {39693,
	title = {Factors influencing the interval to post-partum oestrus, conception date and empty rate in an intensively managed dairy herd},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {40},
	year = {1980},
	month = {Jan},
	pages = {236-239},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	issn = {1176-5283},
	author = {Macmillan KL and Clayton DG}
}
