@conference {40817,
	title = {Measuring body composition by fast neutron activation analysis},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {56},
	year = {1996},
	month = {Jan},
	pages = {212-215},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {The recent availability of a small compact sealed tube neutron  generator, incorporating an associated-particle alpha detector, makes it  feasible to measure the concentrations of C, N and O in the body with a very  low dose of ionising radiation. We describe this new technique and the  equipment needed to use it for measuring body composition. Calibration  data from a prototype instrument relate the counts of gamma rays due to C,  N \& O from phantoms to the number of incident 14 MeV neutrons and  phantom mass. Applying the technique to one 29 kg Romney wether  hogget, we estimated it contained 0.69 kg N, 5.52 kg C and 16.5 kg O.  These results indicate that the technique holds promise for monitoring the  body composition of paediatric and malnourished patients and for measuring  the body composition of young experimental animals such as goats, pigs or  sheep.},
	issn = {1176-5283},
	author = {Wolff JE and Mitra S and Garrett R and Webb PA}
}
@conference {40200,
	title = {Growth responses of fat and muscle in the lamb to intra-arterial infusions of bovine insulin - Brief Communication},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {50},
	year = {1990},
	month = {Jan},
	pages = {91-92},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {The purpose of this paper is to summarise recent findings on the   reproductive physiology of the Booroola ewe, with specific attention to   factors influencing ovulation-rate (OR). The ovarian antral follicle   populations, incidence of atresia, steroid secretion-rate and maximum OR   potential in the different Booroola genotypes (FF, homozygotes; F+,   heterozygotes; ++, non-carriers) are the same notwithstanding the fact   that FF, F+ and ++ animals normal ovulate >=5, 3-4 and 1-2 follicles   respectively during each oestrous cycle. Moreover, the Booroola F gene   does not appear to modify the characteristics of the follicle-   stimulating hormone (FSH) or luteinizing hormone (LH) receptors, or the   gonadotrophin-sensitive components of the cyclic AMP generating system   or the steroid or inhibin biosynthetic functions in follicular cells.   It seems that the F gene influences follicular growth before antrum   formation resulting in fewer granulosa cells at all phases of antral   growth and smaller sized follicles at ovulation. In essence, the >=5,   3-4 or 1-2 presumptive preovulatory follicles in FF, F+ or ++ ewes are   respectively 2.5-4.5 mm, 4-5mm and >5 mm in diameter just before   ovulation but the total populations of oestrogen-secreting follicular or   progesterone-secreting luteal cells in the different genotypes are the   same. These genotypic differences in ovarian characteristics have not   bee replicated by any of the known superovulation regimes.     At the level of the hypothalamus and pituitary no gene-associated   differences have been noted in the concentrations of gonadotrophin-   releasing hormone (GnRH) in the tissues or hypophyseal portal blood nor   in the binding characteristics of GnRH to the pituitary gland. However   F gene-specific differences have been noted in the plasma concentrations   of FSH and LH in ovary-intact and ovariectomized (OVX) Booroola ewes   (FF>++; P,0.05). The F gene-specific differences in FSH but not LH in   OVX ewes can be replicated by exogenous GnRH treatment of OVX ewes   deficient in endogenous GnRH following surgical disconnection of the   hypothalamus from the pituitary gland but with the superior hypophyseal   arteries being left intact. The greater frequency of high FSH values in   ewes is also observed in both intact and castrate Booroola FF rams   relative to ++ rams at P<=0.07. When considered altogether the evidence   suggests that Booroola sheep with the F gene have higher mean FSH   concentrations in plasma relative to ++ sheep. However the differences   are small with considerable overlap between animals of the different   genotypes. It therefore remains to be established whether modest   increases in plasma FSH concentrations in ++ Booroola ewes are   sufficient to modify follicular morphology and OR without altering   steroid secretion.    },
	issn = {1176-5283},
	author = {Wolff JE and Petrie DR}
}
@conference {40062,
	title = {Genetic aspects of cold resistance in new-born lambs},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {47},
	year = {1987},
	month = {Jan},
	pages = {93-98},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {Nine red deer hinds run as 2 groups were fed to appetite on a concentrate diet, indoors, from 5 to 17 months of age. Group food intake and individual liveweight gains were recorded. Food intake varied seasonally with greater amounts being consumed in summer than winter. Similarly liveweight gain was faster in summer than winter.  From the relationship between intake and liveweight gain it was calculated that the hinds need 0.52 MJ metabolizable energy (ME)/kg 0.75/d for maintenance and require 55 MJ ME/kg for liveweight gain. These values result in slightly higher requirements for hinds than previously reported. In comparison with age matched stags, hinds have lower amplitude seasonal fluctuations in food intake and live weight and although maintenance requirements are similar between the sexes, stags require less energy for growth.},
	issn = {1176-5283},
	author = {Wolff JE and Baker RL and Dobbie PM and Ford AJ and Jordan RB}
}
@conference {39871,
	title = {Predicting parturition in the ewe from the pattern of uterine motility},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {44},
	year = {1984},
	month = {Jan},
	pages = {15-18},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {Shortened daylight hours have been shown to advance the onset of puberty in ewe lambs. In this experiment the pineal hormone melatonin was administered to mimic short days with the aim of advancing the onset of first oestrus in September-born ewe lambs. Treatments were; no melatonin in 10 ml saline drenched daily (control), 2 mg melatonin in 10 ml saline drenched daily and 435 mg of melatonin implanted subcutaneously, each on 2 start dates - February 17 and March 17. Fertile rams were introduced on March 10 and April 7 respectively. All ewes were killed on July 28 and foetal crown-rump lengths measured to estimate the date of conception. The mean dates of first tup in the early treatments were not statistically different (May 25, May 9 and May 13) but there was a difference between the control and implant in the estimated dates of conception (June 1 and May 17, P<0.05). In the late treatment the mean dates of first tup were June 2, May 16 and May 10 respectively (P<0.01). However this difference did not lead to a treatment difference in the estimated date of conception because the percentages conceiving to the first tup were 38, 80 and 21 respectively.},
	issn = {1176-5283},
	author = {Wolff JE and Dobbie PM}
}
@conference {39915,
	title = {Theoretical considerations for partitioning nutrients between muscle and adipose tissue},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {44},
	year = {1984},
	month = {Jan},
	pages = {193-200},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {Calorimetry apparatus was used to measure CO2 production and oxygen consumption in 2 Romney and 2 Southdown ewes. Each pair consisted of a long-lean ewe and a short-fat ewe as determined from previous records of height, length, weight and ultrasonic back fat thickness. The respiratory exchange ratio (RER) was calculated as the ratio of CO2 produced/d to O2 consumed/d. When the 4 ewes were fed, the RER remained about 1, characteristic of the oxidation of glucose and short chain fatty acids. When the ewes were fasted for 4 to 5 days the RER declined in a straight linear fashion with time. This is consistent with the mobilisation of long chain fatty acids. The ewes of fatter genotypes exhibited significantly steeper regressions of RER on time.},
	issn = {1176-5283},
	author = {Waghorn GC and Wolff JE}
}
@conference {39511,
	title = {Measuring milk intake of lambs suckling grazing ewes by a double isotope method},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {36},
	year = {1976},
	month = {Jan},
	pages = {99-102},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	issn = {1176-5283},
	author = {Wright DE and Wolff JE}
}
@conference {39422,
	title = {Effect of starvation on blood metabolites in pregnant sheep},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {34},
	year = {1974},
	month = {Jan},
	pages = {66},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	issn = {1176-5283},
	author = {Wolff JE and O{\textquoteright}Hara PJ and Kronfeld DS}
}
