@conference {40277,
	title = {Impact of potential change in climate and atmospheric concentration of carbon dioxide on pasture and animal production in New Zealand},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {51},
	year = {1991},
	month = {Jan},
	pages = {25-33},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {Three groups of 10 ewes each were treated with Repromap sponges  (MAP), Chronogest sponges (FGA) or Controlled Drug Release devices  (CIDR) for 11 days. At withdrawal the delay time until oestrus, LH  surge and ovulation was measured.   There was no significant difference between the two sponge treatments in  mean delay times although FGA treated ewes tended to be less variable in  their activity.   CIDR treated ewes commenced standing oestrus sooner than MAP and FGA  treated ewes (30h vs 42h and 40h respectively P<0.001). Similarly the  onset of the LH surge (31h vs 46h and 46h P<0.001) and ovulation (59h vs  69h and 71h P<0.001) occurred sooner in the CIDR ewes compared to MAP  and FGA sponges.  },
	issn = {1176-5283},
	author = {Martin RJ and Korte CJ and McCall DG and Baird DB and Newton PCD and Barlow ND}
}
