@conference {40435,
	title = {Management effects on seasonal fibre quality in Angora goats},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {52},
	year = {1992},
	month = {Jan},
	pages = {293-296},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {Lambs grazing ryegrass infected with endophyte (Acremonium lolii) may exhibit staggers or diarrhoea or both, with little correlation between these two conditions. Associated mycotoxins/toxins other than the staggers-inducing lolitrems are likely to be responsible for metabolic changes causing reduced intake, elevated temperature and diarrhoea. These mycotoxins are not necessarily confined to the base of the leaf sheath and stem as is the case for lolitrems. The distribution of mycotoxins to proximal portions of vegetative ryegrass and the effect of these plant components on grazing animals was investigated. Following experimental confirmation in 1991 of nil correlation between staggers and diarrhoea, groups of lambs were grazed in autumn 1992 on 100\% endophyte-infected hybrid ryegrass cv. Grasslands Marsden (Lollium boucheanum Kunth.), using a leader-follower system. Upper and lower leaves, and pseudostem were progressively removed by four groups of lambs on three day breaks, replicated twice. Liveweight gain ranged from 164 g/day in lambs having first offer, to 28 g/day in those grazing the base of the plants (P<0.01). Rectal temperature averaged 40.2 C being slightly above normal in all treatments. Faecal moisture was high; ranging from 79-87\% throughout the experiment with no significant differences due to treatment. Observed faecal soiling was greatest in lambs receiving high leaf component (P<0.05). Clinical staggers, barely detectable in lambs grazing leaf, became severe as the proportion of pseudostem in the diet increased (P<0.01). In contrast to the clear association between endophyte and staggers in lambs grazing the base of infected ryegrass, consistently high faecal moisture, and consequent faecal soiling occurred regardless of the part of the plant consumed, but tended to be greatest in lambs grazing leaf. Analysis of plant components suggested that peramines may be associated with this problem.},
	issn = {1176-5283},
	author = {Bown MD and Clayton JB and Bigham ML}
}
@conference {40353,
	title = {Genetic parameters for New Zealand cashmere goats},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {51},
	year = {1991},
	month = {Jan},
	pages = {423-428},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {Lack of breeds suitable for commercial dairying is a constraint  in Developing Countries (LDCs); however there is some progress. All  Latin American Countries have nucleus herds of Holstein or Friesian,  compared to 71\% of Asian and 52\% of African countries. The potential  for more exports of animals to LDCs is high, but success will depend on  support from exporters in their management. Holsteins born in LCDs will  have a body weight at maturity about 125 kg (500-550 kg) lower than  expected, lactation milk yield will be 30-50\% lower, calving intervals  10-15\% longer, age at first calving 25\% later and duration of herd life  .5 to 1.2 parturitions less. This breed needs feeding at least the  equivalent of 2.2 multiples of maintenance in TDN. At this level milk  yield will average near 6000 kg, calving interval 410-420 d, age at  first calving 29-31 mo, fertility will be 1.8 services per conception  and herd life 2.6-3.0 parturitions. This should still result in  acceptable levels in both biological and economic efficiency.  Imbalances in feeding, foot problems, seasonal breeding and milking  sanitation appear among the most pressing problems.  },
	issn = {1176-5283},
	author = {Baker RL and Southey BR and Bigham ML and Newman S-AN}
}
@conference {40236,
	title = {Nutrition effects on fibre quality in Angora goats during spring},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {50},
	year = {1990},
	month = {Jan},
	pages = {323-328},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {No abstract supplied   },
	issn = {1176-5283},
	author = {Bigham ML and Bown MD and Clayton JB}
}
@conference {40138,
	title = {Effect of Regulin implants on spring fertility, lactation and down growth of cashmere does},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {49},
	year = {1989},
	month = {Jan},
	pages = {39-42},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {Ultrasonography has permitted close visualisation of follicular development in cattle and has revealed that three waves of follicles normally develop during the oestrous cycle. Follicle stimulating hormone is important for the recruitment of follicles but it is not known how the recruited follicles are selected to become dominant over other follicles and eventually to ovulate. Hypothalamic, pituitary and ovarian hormones are secreted and released episodically. During the luteal phase of the oestrous cycle, the negative feedback of progesterone prevents any rise in luteinising hormone (LH). As progesterone levels fall, LH increases, prompting an increase in oestradiol which triggers the ovulatory LH surge and behavioural oestrus. LH causes ovulation and luteinisation of follicular cells. Luteal phase progesterone may be responsible for later increases in prostaglandin F2a (PG)F2a, a luteolytic hormone in cattle and sheep which is transferred from the uterus, its site of synthesis, to the corpus luteum. Oestradiol and oxytocin, synthesised in the ovary, may be involved in regulation of uterine synthesis of PGF2a, hastening luteolysis. At this time it is not known how essential these two hormones are to the process of luteolysis. The discovery and synthesis of new ovarian hormones should permit superovulation to become a more exact and a less expensive procedure and for embryonic mortality to be reduced.},
	issn = {1176-5283},
	author = {Moore RW and Bigham ML and Staples LD}
}
@conference {40165,
	title = {Estimates of environmental effects and genetic parameters for live weights and fleece traits of Angora goats},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {49},
	year = {1989},
	month = {Jan},
	pages = {183-190},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {Low voluntary intake and animal performance with perennial ryegrass has been attributed to its high leaf strength. Perennial ryegrass populations were selected for high or low shear strength and individual plants of low (LS) and high (HS) selections grown in a controlled environment. Shear strength of LS leaves (290 g) was half that of HS leaves. LS leaves were shorter, narrower and lighter. However, shear strength of LS remained significantly lower after adjustment for differences in leaf width. Shear strength in both selections declined from leaf base to leaf tip. LS leaves contained less sclerenchyma but had similar vascular tissue content. Sclerenchyma was significantly correlated with shear strength (r=0.82). Chopped leaves (5 cm) from both selections, placed in polyester bags were subjected to rumen microbial digestion. The higher shear strength of HS selected plants was maintained for at least 24 h rumen digestion. It is concluded that lower shear strength was a result of decreased sclerenchyma content and that potential improvements arising from easier breakdown would be maintained during rumen digestion in vivo.},
	issn = {1176-5283},
	author = {Nicoll GB and Bigham ML and Alderton MJ}
}
@conference {40064,
	title = {Genetic variation among six strains of Romneys and Border Leicester and Coopworth crosses},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {47},
	year = {1987},
	month = {Jan},
	pages = {101-105},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {In an 11 month copper supplementation trial in Northland, weaner steer (initial live weight 210 kg) showed decreased liveweight gain when supplemented with copper, from November to March. Pasture copper concentrations were adequate throughout the trial. Serum copper concentrations tended to be low, especially in spring.},
	issn = {1176-5283},
	author = {Baker RL and Clarke JN and Meyer HH and Harvey TG and Bigham ML}
}
@conference {39979,
	title = {Inheritance of loose wool bulk in Romney and Perendale sheep},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {45},
	year = {1985},
	month = {Jan},
	pages = {213-216},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {Lifetime performance data were collected from flocks of 200 mixed-age Romney, Coopworth and Perendale ewes at Whatawhata Hill Country Research Station which were shorn either once yearly in November or twice yearly in May and November beginning in 1978, together with the lifetime performance data of 2-year-old replacement ewes entering these flocks in 1979 and 1980. Twice-shorn ewes were consistently heavier after shearing in November with an apparent carryover effect the following May. More of the twice- shorn ewes required dagging before shearing in November. There was a significant frequency-of-shearing x breed interaction for both total greasy and total clean wool production. Twice-shorn Romney and Perendale ewes grew more wool than once-shorn ewes. Wool growth of the Romney was greater following shearing in May compared with the other 2 breeds. Frequency of shearing did not affect ewe survival, number of lambs born, lamb survival, or weight of lamb weaned per ewe. Incidence of casting was insignificant. Average net wool returns were greater for once-shorn ewes.},
	issn = {1176-5283},
	author = {Bigham ML and Sumner RMW and Clarke JN and Johnson DL}
}
@conference {39826,
	title = {Fleece tenderness - a review},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {43},
	year = {1983},
	month = {Jan},
	pages = {73-78},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {The heritability of loose wool bulk and yellowness (CIE Tristimulus value Y-Z) and the genetic and phenotypic correlation of these with other wool traits were determined from data obtained on ewe hoggets born in 1979 and 1980 in the strains trial at Rotomahana. Heritability estimates were 0.41 },
	issn = {1176-5283},
	author = {Bigham ML and Sumner RMW and Hawker H and Fitzgerald JM}
}
@conference {39828,
	title = {The heritability of loose wool bulk and colour traits and their genetic and phenotypic correlations with other wool traits},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {43},
	year = {1983},
	month = {Jan},
	pages = {83-86},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {Twelve dairy farmers were taught a system of pasture scoring in May 1981. From then until the start of calving they assessed the amount of feed on their farms at fortnightly intervals. Milkfat production per hectare during the subsequent season was closely related to the amount of feed on the farm at the start of calving. Feed at calving was closely related to the amount of feed on the farm in May. The data suggest that milkfat production from most dairy farms is limited by having insufficient feed on the farm at calving.},
	issn = {1176-5283},
	author = {Bigham ML and Meyer HH and Smeaton JE}
}
@conference {39687,
	title = {A review of effects of shearing on sheep production},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {40},
	year = {1980},
	month = {Jan},
	pages = {215-220},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	issn = {1176-5283},
	author = {Smith ME and Bigham ML and Knight TW and Sumner RMW}
}
@conference {39626,
	title = {Wool production of exotic x Romney sheep},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {39},
	year = {1979},
	month = {Jan},
	pages = {115-117},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	issn = {1176-5283},
	author = {Bigham ML and Meyer HH}
}
@conference {39568,
	title = {Reproductive performance, growth and wool production of exotic sheep and their crosses with the Romney},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {37},
	year = {1977},
	month = {Jan},
	pages = {220-229},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	issn = {1176-5283},
	author = {Meyer HH and Clarke JN and Bigham ML and Carter AH}
}
@conference {39567,
	title = {Wool Production of Sheep Breeds on Hill Country},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {37},
	year = {1977},
	month = {Jan},
	pages = {218-219},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	issn = {1176-5283},
	author = {Bigham ML and Elliott KH and Dalton DC}
}
@conference {39395,
	title = {Some Aspects of Feeding Whole Wheat Grain to Young Sheep},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {33},
	year = {1973},
	month = {Jan},
	pages = {157},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	issn = {1176-5283},
	author = {Bigham ML}
}
@conference {39247,
	title = {The effect of two different planes of nutrition from conception to four years of age on the maintenance requirements and on the efficiency of wool growth},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {28},
	year = {1968},
	month = {Jan},
	pages = {74-82},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	issn = {1176-5283},
	author = {Wodzicka-Tomaszewska M and Bigham ML and Kirton AH and Duganzich DM}
}
