@conference {40302,
	title = {The influence of sward structure on peak bite force and bite weight in sheep},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {51},
	year = {1991},
	month = {Jan},
	pages = {153-158},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {The effects of oxytocin and bovine somatotropin (BST) on  production of cows milked once a day (OAD) were assessed in late  lactation. Seventy four cows were milked OAD for 28 days including 7  days adaptation, 14 days treatment, and 7 days post-treatment.  Treatments were OAD controls, OAD plus 5 i.u. oxytocin injected  intravenously each day or OAD plus 20 mg BST injected subcutaneously  each day. An additional 20 cows were milked twice a day (TAD)  throughout the trial.   Production of OAD cows averaged 11\% less than that of the TAD controls  during the first week of OAD milking. Milk yield was significantly  increased by 13\% in BST treated cows but was not affected by oytocin.  Cessation of both treatments resulted in a reduction in yield compared  to the OAD and TAD control groups. The failure of oxytocin to increase  yield was not in agreement with previous results, possibly due to a  lower dose rate of oxytocin in the present trial. Increased yields in  BST treated cows suggested that udder capacity was not constraining  yield and that BST may override the inhibition of milk secretion which  occurs with extended milking intervals.  },
	issn = {1176-5283},
	author = {Hughes TP and Sykes AR and Poppi DP and Hodgson J}
}
@conference {40360,
	title = {Short term intake of Friesian heifers grazing three pasture species},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {51},
	year = {1991},
	month = {Jan},
	pages = {465-468},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {Objective measures of muscularity were calculated for 1602  Romney and Romney-cross carcasses which were the progeny of 102 sires.  Muscularity was defined as a measure of muscle thickness relative to  carcass length. Phenotypic and genetic parameters were calculated from  REML estimates of variance and covariance components. Different  measures of muscularity had genetic correlations with one another  between .48 and .84 and phenotypic correlations between .30 and .62.  Measures of muscularity and high heritability (.40 to .68), positive  genetic correlations with weight of carcass lean (.32 to .53) and  carcass weight (.08 to .32) and negative genetic correlations with  carcass fat (-.06 to -.33), and carcass length (-.11 to -.30). Single  trait selection on muscularity was expected to result in increased lean  and decreased fat. Selection on some of the muscularity measures was  expected to result in increased subcutaneous fat. When the breeding  objective gave positive emphasis to lean weight and negative emphasis to  fat weight and the selection criteria were carcass weight and a  muscularity measure, the muscularity measure that gave the greatest  economic response to selection was that which used the longissimum  muscle width (A) as a measure of muscle thickness.  },
	issn = {1176-5283},
	author = {Elliott AW and Hughes TP}
}
@conference {40174,
	title = {The influence of sward height on the mechanics of grazing in steers and bulls},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {49},
	year = {1989},
	month = {Jan},
	pages = {233-236},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {A low cost system for producing early lambs is desirable both to capitalise on Hawkes Bay{\textquoteright}s climatic advantage of a mild winter and to minimise the feed deficit that results from a dry summer. A series of trials was undertaken to develop a system for using the "ram" effect to stimulate early oestrus (December/January) in otherwise anoestrous Romney ewes. When Poll Dorset rams (5\%) and oestrous Poll Dorset ewes (10\%) were joined with Romney ewes in early December, more ewes were mated after 3 cycles than when Poll Dorset rams alone were joined. The effectiveness of social facilitation appeared to vary between years with between 39 and 97\% of Romney ewes mated after 3 cycles to an early December joining. The social facilitation effect also appeared to be less marked at a January joining. Romney ewes with a range of lambing rates from May to September and mean lactation periods of 12 weeks were weaned at varying intervals (12. 6 and 0 weeks) prior to ram introduction in early December. There was no difference in rate of onset of oestrus. Mean lambing dates for 90\% of the ewes in the 3 groups were 18th, 12th and 10th June, respectively. There was no effect of live weight or body condition on date of first oestrus. Romney ewes were exchanged between Hawkes Bay and Wanganui to examine the effect of genotype and environment on the onset of oestrus. Poll Dorset rams (6\%) were introduced on 30th November. By the 27th January 87\% of ewes had been mated at the Hawkes Bay site compared with 15\% at Wanganui. At each location there was little difference between ewes from the two sources in rate of onset of oestrus.},
	issn = {1176-5283},
	author = {Mursan A and Hughes TP and Nicol AM and Sugiura T}
}
@conference {39894,
	title = {Diet selection of young ruminants in late spring},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {44},
	year = {1984},
	month = {Jan},
	pages = {109-112},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {Earlier trials indicated that pasture quality (\% green DM in the sward) and pasture accessibility (green DM/ha) can be more limiting to ewe live-weight gain prior to mating than pasture allowance. Two trials investigated the effects of summer grazing management on subsequent pasture quality. From weaning to the start of flushing ewes were grazed lax (residual >2000 kg DM/ha) or hard (residual <1500 kg DM/ha). A live-weight difference of 4 kg occurred at the start of flushing and reduced to 2.5 kg at mating. Main effect results showed that at similar green allowances, ewes flushed on pasture which had previously been hard grazed had live-weight gains 20 to 30 g/d more than ewes on lax grazed pasture. There were no differences in ovulation rate but he live-weight results suggest that there would on average be an advantage to flushing on hard grazed pasture. Wool production was affected similarly to live weight. Management implications are discussed.},
	issn = {1176-5283},
	author = {Hughes TP and Sykes AR and Poppi DP}
}
@conference {39852,
	title = {Some effects of hot conditions on Brahman or Sahiwal crossbred calves},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {43},
	year = {1983},
	month = {Jan},
	pages = {175-178},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {New Zealand is involved in the improvement of the Bali breed of cattle in Indonesia through a bilateral aid project. From 1977/82 significant improvement has been achieved in the Bali Cattle Development Project - 5 kg, 6 kg and 22 kg improvement in weaning, yearling and rising 2-year-old live weights respectively and 21\% improvement in calving percentage. Establishment of a central breeding herd of elite Bali cows is planned with top performance and progeny tested bulls being made available to the local farmers through artificial breeding. The unique qualities of Bali cattle enhances its export potential throughout many tropical and subtropical countries of South-East Asia and the Pacific.},
	issn = {1176-5283},
	author = {Holmes CW and Hughes TP and King CG and Sauwa PEL and Auko PSA}
}
@conference {39664,
	title = {Some implications of sward chemical and physical characteristics for the nutrition of grazing ruminants},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {40},
	year = {1980},
	month = {Jan},
	pages = {68-84},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	issn = {1176-5283},
	author = {Hughes TP and Poppi D and Sykes AR}
}
@conference {39558,
	title = {The energy metabolism of young Friesian calves fed on a diet of milk and concentrate},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {37},
	year = {1977},
	month = {Jan},
	pages = {163-166},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	issn = {1176-5283},
	author = {Hughes TP and Holmes CW and Davey AWF}
}
