@conference {40427,
	title = {Effect of oestrogen pre-treatment and duration of CIDR treatment on pattern of onset of oestrus in ewes},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {52},
	year = {1992},
	month = {Jan},
	pages = {257-260},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {When they were weaned at five and a half months of age, 33 Angus  heifers were randomly divided into two groups representing different  planes of nutrition. From weaning until two months before calving which  began on 15 July 1977 the liveweight difference between the two groups  was steadily increased until the high plane group (HP) weighed 17 kg  more than the low plane group (LP) on 17 May 1977. From then until  calving the high plane group was fed to maintain constant liveweight,  while the low plane group was fed to gain liveweight at the rate of 0.3  kg/day. When calving began both groups weighed the same average  liveweight (415 kg).   Calf birth weight was affected by nutritional treatment (HP 26.2 },
	issn = {1176-5283},
	author = {Smith JF and Parr J}
}
