@conference {40264,
	title = {Oestrus activity in Booroola Merino, New Zealand fine wool Merino and Poll Dorset ewes from October to February},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {50},
	year = {1990},
	month = {Jan},
	pages = {469-470},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {No abstract supplied   },
	issn = {1176-5283},
	author = {Knight TW and Kannegieter SG and Gibb M and Haack NA}
}
@conference {40178,
	title = {Mating Romney ewes in November-December using CIDRs and pregnant mare serum gonadotrophin},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {49},
	year = {1989},
	month = {Jan},
	pages = {255-260},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {The policy on most New Zealand sheep farms is to pre-tup shear two tooths in late February/early March two to four weeks prior to mating. However, in summer-dry regions, where feed supplies are typically low in late summer, this practice may potentially depress two tooth performance because post-shearing increases in feed requirements cannot be met. An alternative hogget-four tooth shearing arrangement which does away with late summer/autumn two tooth shearing has therefore been investigated at Massey University{\textquoteright}s "Riverside" sheep farm in the Wairarapa; a farm prone to summer droughts. In trials over three years the alternative shearing arrangement was found not to disadvantage ewe liveweight gains, fertility, wool production or financial returns. In addition to reducing autumn feed requirements, earlier objective selection of flock replacements and hogget mating are potential benefits of the alternative shearing programme. A slightly poorer spring cashflow results but otherwise management requirements are similar.},
	issn = {1176-5283},
	author = {Knight TW and McMillan WH and Kannegieter SG and Sorensen ES and Ridland CJ and Gibb M}
}
@conference {40013,
	title = {Ram-induced inhibition of plasma follicle-stimulating hormone (FSH) concentrations in anoestrous Romney ewes},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {46},
	year = {1986},
	month = {Jan},
	pages = {153-156},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {A major constraint on the profitability of using {\textquoteright}Fecundin(r){\textquoteright} is the cost of treatment and one approach to this problem is to reduce the dose rate. In 1984 Coopworth ewes were allocated to 3 groups. One group was untreated (control) while the other 2 groups were injected twice with Fecundin. One treated group received a full dose (2ml) each time while the other group received a half dose (1ml) on both occasions. In 1985 the same ewes were roboosted with Fecundin(r). Control ewes remained untreated while ewes from each group in 1984 were boosted with either a half or full dose. In the first year, both immunised groups showed a substantial increase in ovulation rate over controls (2.45 full, 2.20 half and 1.86 control). The higher ovulation rate of full dose compared to half dose ewes did not result in more lambs born or weaned (lambs born/ewes joined were 1.68 full, 1.65 half and 1.35 control). In 1985 all 4 treatment groups had a higher ovulation rate (2.43) than the control (2.03 and there were no difference between immunisation treatments. A similar patter was seen in lambs born. Thus the cost of treatment can be halved by using a 1 ml dose of Fecundin(r) without a drop in the additional performance obtained.},
	issn = {1176-5283},
	author = {McNatty KP and Hudson N and Gibb M and Ball K and Morrison L}
}
@conference {39941,
	title = {Influence of follicle stimulating hormone on ovarian follicular development and ovulation rate in Romney ewes},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {45},
	year = {1985},
	month = {Jan},
	pages = {51-54},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {Levels of cell mediated immunity (CJMI) were monitored in pregnant and non-pregnant control ewes to assess the impact of pregnancy on CMI in sheep. Pregnant plasma caused a significant depression in lymphocyte culture reactivity with mitogens (PHA, Con A and PWM) or with antigen (BSA) in primed animals. No defect in transformation was evident in pregnant lymphocytes per se, which gave normal transformation when cultured in control plasma. Delayed- type hypersensitivity (DTH) responses to specific antigens were significantly lower during pregnancy in response to 1},
	issn = {1176-5283},
	author = {Hudson N and McNatty KP and Ball K and Gibb M and Heath D and Lun S and Kieboom L and Henderson KM}
}
@conference {39872,
	title = {Effect of season on ovarian and pituitary activity in cows},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {44},
	year = {1984},
	month = {Jan},
	pages = {19-20},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {One hundred and four ewe lambs born in 1980 to either ewes that had been immunised against steroid hormones or untreated control ewes were retained for study of their subsequent growth and reproductive performance. There was no significant effect of dam immunisation on growth rate or reproductive performance as hoggets, 2-tooths or 4- tooths. Dam breed (Coopworth or Romney) was the major factor influencing reproductive performance. Mean lamb birth weight was 3.7 kg, weaning weight 18.7 kg, hogget mating weight 40.0 kg, 2-tooth mating weight 54.4 kg and 4-tooth mating weight 60.4 kg. At 9 months of age 83\% had exhibited oestrus and their ovulation rate was 1.08, as 2- tooths, 96\% mated in the first cycle with an ovulation rate of 1.68 and a conception rate of 80\% to first service. They had a lamb drop of 1.49 lambs born/ewe joined and weaned 1.35 lambs/ewe joined. The respective figures as 4-tooths were 98\%, 1.8, 85\%, 1.43 and 1.34. These data indicate that immunisation of ewes against steroid hormones has no adverse effects on the performance of their progeny.},
	issn = {1176-5283},
	author = {McNatty KP and Heath D and Lun S and Henderson KM and Hudson N and Gibb M and McDiarmid J and Montgomery GW and Thurley DC}
}
@conference {39758,
	title = {Induction of cyclical ovarian activity in seasonally anoestrous Romney ewes: studies with exogenous GnRH or LH},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {42},
	year = {1982},
	month = {Jan},
	pages = {21-24},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {Groups of high and low fecundity Booroola x Romney (B x R) and Romney (R) two-tooth ewes grazed a pasture containing 85\% {\textquoteright}Grasslands Pawera{\textquoteright} red clover for 10 days; similar groups of ewes grazed ryegrass- white clover control pastures. Oestrus and ovulation were synchronised in all ewes to occur during the last 5 days of grazing. Pawera leaf material contained 0.7\% formononetin and the pasture was highly oestrogenic to sheep (>40 },
	issn = {1176-5283},
	author = {McNatty KP and Ball K and Hudson N and Gibb M and Thurley DC}
}
