@conference {40632,
	title = {Current and emerging reproductive technologies for beef breeding cows.},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {54},
	year = {1994},
	month = {Jan},
	pages = {345-350},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {Reproductive technologies may be defined as any technology which  
impacts on the reproductive potential of the herd.  Reproductive technologies  
applicable to beef breeding cows can broadly be classified into those requiring  
either a low, medium or high technical input.  The examples of {\textquoteright}Low  
Technology{\textquoteright} options discussed are: age at first joining, breed/cross or strain of  
cow, time of calving, and pregnancy diagnosis.  In traditional breeding cow  
herds, cow productivity can be increased by modest amounts (5-10\%) if only  
single-option {\textquoteright}low tech{\textquoteright} changes are implemented.  However, these  
fundamental technologies need to be well developed before higher technologies  
can be successfully applied.  Two examples of {\textquoteright}Medium Technology{\textquoteright} strategies  
that have been available for some time include oestrous synchronisation and  
multiple suckling.  Oestrous synchronisation has the potential to facilitate an  
increase in the number of herds adopting yearling heifer mating.  Twin suckling  
through fostering an additional calf has been demonstrated to significantly  
increase the number of calves weaned per cow.  Emerging {\textquoteright}High Technology{\textquoteright}  
options include: twinning, controlling the sex of calves at conception and  
cloning.  Future developments in embryo technologies are vital in many of the  
emerging reproductive technologies for beef cows. 
 },
	issn = {1176-5283},
	author = {McMillan WH}
}
