@conference {40661,
	title = {Staple tenacity versus staple strength},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {55},
	year = {1995},
	month = {Jan},
	pages = {39-41},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {Six nutritional regimes were applied to 134 Friesian heifers to  determine the effects of differential rearing on productive and  reproductive performance.    Cycling animals were identified at 11.5 and 15 months by measuring  progesterone in consecutive weekly blood plasma samples. Heifers were  synchronised using CIDR devices and artificially inseminated for two  cycles, followed by six weeks of natural mating.    At 11.5 months, 95\% of the high (268 kg LW), 65\% of the medium (242 kg  LW), and 2\% of the low (186 kg LW) nutrition groups were cycling. At 15  months, all heifers in the four high groups were cycling compared to  only 82\% of heifers in the two low groups was probably enhanced by the  CIDR progesterone treatment stimulating puberty in non-cycling heifers.  Friesian heifers should average 300 kg to ensure all animals are cycling  normally prior to the start of mating.   },
	issn = {1176-5283},
	author = {Scobie DR and Merrick NC and Bray AR}
}
