@conference {39813,
	title = {Distribution of litter sizes within flocks at different levels of fecundity},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {43},
	year = {1983},
	month = {Jan},
	pages = {25-28},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {Hogget lamb mortality in the Waihora sheep improvement programme from 1970/80 has ranged from 18 to 35\% (mean = 24\%). Hogget lambs born during the 1981 and 1982 lambings were used to study the timing, magnitude and causes of lamb mortality. Mean mortality to weaning were 33\% and 28\% in each year. The distribution of deaths was similar in each of the periods: at birth, born alive but died by day 3 and died between day 4 and docking. Dystocia was the single largest cause of deaths to day 3 accounting for about 13 lamb/100 lambs born. Birth weight was an important factor in lamb deaths with an optimum range of 3.3 to 4.1 kg for minimum mortality.},
	issn = {1176-5283},
	author = {Davis GH and Kelly RW and Hanrahan JP and Rohloff RM}
}
