@conference {40744,
	title = {Ovarian characteristics in Inverdale ewes heterozygous (I+) and homozygous (II) for the Inverdale gene (FecX)},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {55},
	year = {1995},
	month = {Jan},
	pages = {301-303},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {The Inverdale gene (FecX) affects ovarian development, during both  foetal and adult life. There is evidence for affects on germ-cells, the  follicle and the corpus luteum. In I+ewes, follicles ovulate at a small  diameter with fewer granulosa cells and the resulting corpora lutea are  individually smaller compared to those in control (++) animals. This  appears to be due to the granulosa cells in I+ follicles being more  responsive to follicle-stimulating hormone (FSH) and acquiring receptors  for luteinising hormone (LH) earlier than in cells from ++ ewes. These  differences between I+ and ++ ewes in ovarian characteristics occur in  the absence of any obvious differences in the peripheral plasma  concentrations of FSH and LH or the ovarian secretion rates of inhibin,  oestradiol and progesterone. In II animals, ovarian follicular growth  is impaired at the primary stage of growth during foetal, neonatal and  adult life. No normal follicles beyond this stage of growth have been  observed. II animals also have castrate levels of FSH and LH and  undetectable plasma levels of ovarian steroid or inhibin. In ~35\% of II  animals, abnormal surface-visible structures have been observed with a  morphology consistent with that of a sertoli-cell or sex-chord stromal  tumour. These structures, which secrete inhibin, appear to develop from  clusters of oocyte-free follicles.   },
	issn = {1176-5283},
	author = {McNatty KP and Smith P and Hudson NL and Lun S and Heath D and Shackell G and Corrigan K}
}
@conference {40212,
	title = {Comparison of commercial gonadotrophins using bioassays},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {50},
	year = {1990},
	month = {Jan},
	pages = {161-166},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {The immune response of sheep to nematode parasites involves a   cascade of events beginning with the recognition of nematode antigen,   followed by stimulation of the immune system to elicit the appropriate   cellular response at the gut mucosa and finally the release of products   which promote the elimination of the parasite from the gut. These   processes are examined and deficiencies in the knowledge are   highlighted. The application of the knowledge of the sheeps{\textquoteright} immune   system to the identification of a marker for resistance and   opportunities for the control of nematodes through manipulation of   sheeps{\textquoteright} responsiveness are discussed.     The progress that has been achieved in the experimental breeding of   sheep for nematode resistance is examined. The use of such valuable   scientific resource flocks for studies which advance the understanding   of the immunology of resistance is discussed.    },
	issn = {1176-5283},
	author = {Henderson KM and Weaver A and Wards RL and Lun S and McNatty KP}
}
@conference {40033,
	title = {Ovarian follicular development in Booroola ewe lambs and in highly fecund Booroola ewes},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {46},
	year = {1986},
	month = {Jan},
	pages = {241-244},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {Two hundred and thirty 5-year-old Romney ewes were synchronised with progestagen intravaginal sponges and injected with dexamethasone 142 or 143 days after the median mating day of the first and second cycles of oestrus. Seventy-one \% of the lambs were born 30 to 50 h after injection. The ewes were offered 2 pasture allowances for the last 6 weeks of pregnancy (approximately 6 and 1 kg DM/ewe/d). Lambs were vigour scored (1 to 10) and probed for rectal temperature and ewe lambs were cross-fostered as soon as possible after birth in order to obtain a 2 4 factorial design incorporating birth type (single and twin) rearing types (single and twin), pre-natal nutrition of dam (high and low allowance), and pre-natal nutrition of foster dam (high and low allowance). Lambs born from high allowance ewes had higher rectal temperatures at birth than those born from low allowance ewes, and female lambs had higher rectal temperatures than male lambs. Single-born lambs scored higher on vigour than those born as multiples. Increasing vigour was associated with increasing birth weight for all lambs, but increasing temperature was associated with increasing birth weight only for male lambs. There were no effects of pre-natal nutrition on lamb growth either through the dam or foster dam. The effect of birth type on lamb live weight was significant to 9 weeks of age whereas the effect of rearing type was significant to 33 weeks. There were no significant birth type x rearing type interactions at any age.},
	issn = {1176-5283},
	author = {McNatty KP and Lun S and Heath D and Hudson N and McDiarmid J and Ball K and Smith P and Henderson KM}
}
@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 {39876,
	title = {Ovarian activity in the Booroola x Romney ewe possessing a major gene influencing fecundity},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {44},
	year = {1984},
	month = {Jan},
	pages = {33-36},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {Prices paid at 6 sales for Perendale fleece wool assessed as having loose wool bulk values of 25 cm},
	issn = {1176-5283},
	author = {McNatty KP and Henderson KM and Lun S and Heath D and Kieboom L and Hudson N and Fannin J and Ball K and Smith P}
}
