@conference {40730,
	title = {Induction of early post-calving ovulation and oestrus in suckled beef cows},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {55},
	year = {1995},
	month = {Jan},
	pages = {261-264},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {The aim of this study was to compare the efficacy of exogenous  progesterone, either without or with a single injection of gonadotrophin  releasing hormone (GnRH), at initiating early post-calving ovulatory and  oestrous activity. Six days (d)after the first post-partum follicle had attained  dominance cows were allocated to either an untreated control group; treated  with a progesterone-impregnated CIDR},
	issn = {1176-5283},
	author = {McMillan WH and Hall DRH and Oakley AP}
}
@conference {40634,
	title = {Determining the number of calves in early pregnancy using real-time ultrasound imaging in beef cows induced to twin.},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {54},
	year = {1994},
	month = {Jan},
	pages = {353-356},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {Details of the timing of pregnancy loss following induced twinning are  
unknown.  The aim of this study was to evaluate real-time ultrasound as a  
method of determining early pregnancy status (0, 1 or 2 foetuses) in beef cows  
induced to twin using AI and ET.  A 7.5 Mhz ultrasound probe was used intra- 
rectally to count foetuses in 2 experiments.  In Exp. 1, 57 heifers were  
examined between 25 and 60 days of pregnancy and then slaughtered.  In Exp.  
2, up to 103 cows were examined between Day 25 \& 60 of pregnancy, and final  
pregnancy status was confirmed using calving records.  In Exp. 1, the accuracy  
of Day 25, Day 45 and Day 60 predictions of 2 foetuses was 100\%, 20\% and  
100\%, and 1/24, 5/33 and 1/33 twin pregnant heifers were predicted.  The  
accuracy of correctly predicting twin outcomes was 33, 50 and 33\% at the same  
3 stages of pregnancy, but only 3, 2 and 3 twin pregnancies occurred,  
respectively. In Exp. 2, there was generally little difference between the  
accuracy of predicting twin pregnancies and the accuracy of the prediction.   
Thus, at Day 25, 35 and 45 and 60, the accuracies were approximately 20, 47,  
52 and 45\%.  Twenty recipients eventually calved twins.  We conclude that  
real-time ultrasound imaging up to Day 60 is not an accurate technique for  
determining twin pregnancy status of cows.  Loss of concepti between scanning  
and term did contribute substantially to this poor result in Exp. 2, but not in  
Exp. 1. 
 },
	issn = {1176-5283},
	author = {McMillan WH and Oakley AP and Hall DRH}
}
@conference {40504,
	title = {Twinning in beef cows: preliminary results from embryo transfer studies},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {53},
	year = {1993},
	month = {Jan},
	pages = {263-266},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {While the main focus in the breeding of Texel sheep in New Zealand has been selection for superior meat production there are significant qualities in the wool which make it a highly desirable fibre. Texel, Texel X Romney and Romney wools are evaluated to determine their relative attributes as textile fibres in wool products where good length and high bulk are considered important. Evaluation involved examining the value of good length bulk wool in the current wool market, spinning semi-worsted yarns, manufacturing carpets and sample bedding products. All three lines performed as expected from the measured fibre characteristics. Core bulk of the scoured wool for Texel, Texel X Romney and the Romney were respectively 32.9 cm3/g, 29 cm3/g and 25.7 cm3/g. Based on an average market value of 450 c/kg clean and 1991/92 relativities, the premium for bulk of these long good colour wools is 10 c/kg/unit. The high bulk wools gave improved spinning performance 44.4 52.9 and 73.3 end breaks per 100 spindle hours at 5000-6000 rpm for the Texel, Texel X Romney and Romney lines respectively. Improved abrasion resistance of carpet made from the Texel and Texel-cross was attributable to different pile weight and yarn bulk values. Samples evaluated indicate Texel sheep produce wools with similar textile properties to New Zealand crossbred wools but with higher bulk. The Texel breed should be monitored for its suitability as a source of genetic material to increase bulk in New Zealand wools. Lack of quantitative knowledge of the change in fleece weight and carcass returns from the introduction of the Texel genetic influence into Romney stock prevents assessment of their economic benefit to the New Zealand farmer.},
	issn = {1176-5283},
	author = {McMillan WH and Hall DRH and Evans PH and Day AM}
}
@conference {40489,
	title = {Twin-suckling beef cows using foster calves: effects on cow and calf performance},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {53},
	year = {1993},
	month = {Jan},
	pages = {203-205},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {One hundred and twenty three Friesian or Friesian x Jersey mature dairy cows were used to examine the effects of Rumensin Anti- bloat Capsules (ABC), containing sodium monesin on plasma magnesium, glucose and },
	issn = {1176-5283},
	author = {McMillan WH and Evans PH and Hall DRH and McLean M}
}
@conference {40378,
	title = {Reproduction in flocks selected for and against lamb faecal egg count},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {52},
	year = {1992},
	month = {Jan},
	pages = {65-68},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {The calpain system consists of two enzymes and their endogenous  inhibitor, calpastatin, and is involved in the breakdown of myofibrillar  protein in skeletal muscle. We have investigated the relationship  between the calpain system and protein degradation in sheep under three  different feeding regimes. Calpain were separated from fresh muscle  using a DEAE-Sephacel ion exchange column. Calpain I and calpastatin  activities were higher in the restricted group than in the ad-  libitum group. Fasting increased calpastatin but had no effect on  the calpain I activity. There was a positive relationship between the  calpastatin : calpain I ratio and protein degradation and a negative  relationship with calpain I. This result is at variance with the idea  that calpain I activity limits the rate of protein degradation.  },
	issn = {1176-5283},
	author = {McMillan WH and Hall DRH and Watson TG}
}
@conference {40300,
	title = {Artificial insemination using the buck effect to partially synchronise cashmere does},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {51},
	year = {1991},
	month = {Jan},
	pages = {143-146},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {No abstract available  },
	issn = {1176-5283},
	author = {Moore RW and Hall DRH}
}
@conference {40298,
	title = {Superovulation in ewes: are follicle numbers a useful predictor of ovulation rate?},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {51},
	year = {1991},
	month = {Jan},
	pages = {133-138},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {The grazing behaviour of mixed age cashmere producing does was  recorded on pasture dominated hill country at six physiological stages;  post-weaning, pre-mating, early pregnancy, late pregnancy, early  lactation and mid lactation.   Observations were conducted from sunrise to sunset on three consecutive  days at each physiological stage. Activity, land slope, time and  position of focal animals were recorded. Flock position over the study  site was also registered.   At each physiological stage grazing was the predominant activity (34-63\%  of the time observed). The major grazing period occurred during the  afternoon. Grazing occurred predominantly on steep and easy slopes  (>70\% of the time observed). Pasture height influenced the goats  preference for the slope grazed. The does travelled in a regular  pattern around the study site. This pattern was less distinct when the  does had kids at foot.   Activities observed during late pregnancy differed considerably from  activities observed at other physiological stages. Some of these  differences included more time spent standing and no distinct afternoon  grazing period.   Rain was the main event to interrupt grazing and initiate a change in  the movement pattern of the does.  },
	issn = {1176-5283},
	author = {McMillan WH and Hall DRH}
}
@conference {40092,
	title = {Cervical versus laparoscopic AI of goats after PMSG injection at or 48 hours before CIDR removal},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {48},
	year = {1988},
	month = {Jan},
	pages = {69-70},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {An experiment was conducted in which 1402 Romney ewes, aged 2 to 5 years, were treated with intravaginal controlled internal drug releasers (CIDR) followed by 1 of 2 pregnant mares serum gonadotrophin (PMSG) preparations (Pregnecol(r), 530 iu v Pharmochem(r), 460 iu) for mating on 1 of 3 dates (December 19, 28 or January 3). Of the 1402 ewes joined with the ram, 71\% conceived to the first cycle. Conception rates, proportion of ewes conceiving multiples and foetuses per ewe joined were assessed by ultrasound pregnancy diagnosis at day 50 of pregnancy. Reproductive performance was highest in 2-year old ewes but not influenced by previous reproductive history (wet v wet/dry in the previous spring). All measures of reproductive performance declined at later mating dates compared with those at December 19. Substantial premiums were obtained for early-born lambs, and for their dams when slaughtered at weaning the following September. Out-of-season lambing systems appear to offer economic benefits in areas characterised by good winter and spring growth rates but dry summers.},
	issn = {1176-5283},
	author = {Moore RW and Miller CM and Hall DRH and Dow BW}
}
@conference {39811,
	title = {Effects of teasing and nutrition on the duration of the breeding season in Romney ewes},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {43},
	year = {1983},
	month = {Jan},
	pages = {17-20},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {Proportions of ewes having 1 to 4 lambs in 72 local breed flocks with mean litter sizes per ewe ranging from 1.07 to 2.30 were examined, and compared with the proportions recorded in 12 groups of Booroola and 8 groups of Finn type ewes. Below a mean litter size of 1.70, differences in litter size resulted from differences in the proportion of ewes having singles and twins. Mean litter sizes ranging from 1.70 to 2.30 were accompanied by changes in the proportions of ewes having singles and triplets, the proportion of ewes having twins or quadruplets showing no significant change. The proportions recorded in local breed flocks and groups of Finn-type sheep were similar over litter sizes of 1.70 to 2.30. Groups of ewes that carried 1 copy of the Booroola gene had more ewes with 1, 3 and 4 lambs, but fewer ewes with twins, than the local breed flocks.},
	issn = {1176-5283},
	author = {Knight TW and Hall DRH and Wilson LD}
}
@conference {39474,
	title = {Growth rate and oestrous behaviour of Friesian, Hereford x Friesian, Simmental x Friesian and Angus heifers},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {35},
	year = {1975},
	month = {Jan},
	pages = {129-136},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	issn = {1176-5283},
	author = {Dalton DC and Jury KE and Hall DRH}
}
