@conference {40199,
	title = {Nutritional partitioning of growth for productive gain},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {50},
	year = {1990},
	month = {Jan},
	pages = {81-90},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {Artificial insemination (AI) is widely used throughout New   Zealand dairy herds because it is convenient and allows herd owners to   utilise semen from intensively selected genetically superior sires.   The future focus of AI use will be to synchronise oestrus in maiden   heifers and cows to further concentrate seasonal calving patterns.   There will also be continued use of progesterone-based treatments to   stimulate ovarian activity in anoestrous cows and to increase pregnancy   rates in inseminated cows.     Aspects of behaviour and marked seasonality in red deer and fallow deer   currently present challenges to increasing the use of AI and controlled   breeding in these species. It would be preferable to have   fawning/calving in spring instead of summer, with or without the use of   AI. However, the semen production of stags is best from 4 weeks after   the onset of the induced or normal rut. This potentially increases the   dependence on deep frozen semen and increases the need for the uterine   deposition of sperm to increase sire coverage and achieve satisfactory   pregnancy rates. Controlled use of hormones will produce altered   calving/fawning dates and developing semen collection/processing   techniques will increase the use of AI in deer.    },
	issn = {1176-5283},
	author = {Harris PM and Waghorn GC and Lee J}
}
