@conference {40328,
	title = {Dairying in the south},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {51},
	year = {1991},
	month = {Jan},
	pages = {295-296},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {Synchronised breeding systems involving 290 red deer hinds were  investigated in 5 experiments with fixed-time laparoscopic artificial  insemination (AI) following a synchronised oestrus and in 1 experiment  with synchronised natural breeding. Experiment 1 involved an  investigation of the potential for twinning; hinds were treated with  PMSG and inseminated before (March 1) or during (April 12) the normal  breeding season, with 29 and 40\% respectively having multiple  ovulations. There was no effect of AI date on pregnancy rate (0.80 and  0.71 respectively) but a greater proportion of hinds which had multiple  ovulations. There was no effect of AI date on pregnancy rate (0.80 and  0.71 respectively) but a greater proportion of hinds which had multiple  ovulations and had not been lactating in the previous season were twin-  pregnant than hinds which had been lactating (0.19 and 0.62, P<0.05).  In other experiments AI was performed using red (R; n=70), Canadian  wapiti (CW; n=59) or CW x R hybrid (n=11) frozen-thawed semen with  pregnancy rates of 0.67, 0.66 and 0.82 respectively. Fresh Pere David{\textquoteright}s  deer x R hybrid semen gave a pregnancy rate of 0.61 (n=31). A pregnancy  rate of 0.84 was recorded for the synchronised natural mating of (CW x  R) males with red females (n=49). Overall 3\% of the R pregnancies and  9\% of the hybrid pregnancies failed to reach terms.  },
	issn = {1176-5283},
	author = {McDonnell AM}
}
