@conference {40878,
	title = {Correlated responses in fleece weight to selection for high or low faecal egg count in New Zealand Romneys and Perendales.},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {57},
	year = {1997},
	month = {Jan},
	pages = {26-28},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {Three selection experiments, two involving Romneys (at Wallaceville and Ruakura) and the third involving Perendales (at Ruakura), have resulted in breeding lines showing significant divergence in faecal nematode egg count (FEC), under natural challenge. The High and Low FEC lines in each experiment experienced 18, 8 and 11 years of selective breeding respectively to 1996. The geometric means of FEC in the three experiments were 7.3, 2.0 and 4.5 times greater in the High than the Low lines, equivalent to divergences of 2.12, 0.80 and 1.27 phenotypic standard deviations. In the present analysis, the High and Low lines were compared for greasy fleece weights using both yearlings (YFW) and mixed-age ewes (EFW). Relative to the Low lines, the corresponding High lines had greater YFWs by 14.6{\textpm}3.0, 7.9{\textpm}2.4 and 5.3{\textpm}3.1\% respectively (mean of three, 9.1{\textpm}1.6\%), and they had greater EFWs by 14.9{\textpm}1.7, -3.2{\textpm}3.8 and 8.0{\textpm}2.7\% (mean of three, 10.9{\textpm}1.3\%). The conclusion is that single-trait selection for reduced FEC in Romneys and Perendales is associated with reduced greasy fleece weight, when they and less resistant animals graze together. },
	issn = {1176-5283},
	author = {Morris CA and Bisset SA and Baker RL and Watson TG and Wheeler M}
}
@conference {40496,
	title = {An investigation of sire by location interactions for faecal nematode egg counts in lambs},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {53},
	year = {1993},
	month = {Jan},
	pages = {231-234},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {The aim of this study was to gain evidence that the FecB and FecXI genes influence ovarian development in foetal life. Foetuses which were homozygous carriers of the Booroola gene (BB), Inverdale gene (II), heterozygous carriers of the Inverdale gene (I+) and non-carriers of both the Booroola (++) and Inverdale genes (++) were recovered at days 40 or 90 of gestation. To eliminate the effects of litter size in the Booroola study, equal numbers of BB and ++ embryos were transferred to recipient ewes.  Subsequently no gene-specific differences in litter size were noted at the equivalent of days 40 and 90 of gestation. From these studies the FecB gene was shown to affect body weight, the weight of the mesonephros, and development of germ cells. In essence, at day 40 the mean body weight and mean weight of the mesonephros were lighter in the BB foetuses compared to the ++ animals (P<0.05). Moreover the development of the BB ovaries appeared to be retarded relative to that of the ++ ovaries with respect to mitosis and meiosis of germ cells and also the timing of germ cell atresia. In the Inverdale foetuses, which were recovered after natural matings, differences were observed at the level of the ovary but none were noted with respect to body weight, or weight of mesonephros. At day 40 of gestation the ovaries of the putative II foetuses were significantly lighter (P<0.05) than those of the I+ or control animals. Moreover at day 90 the ++ and putative II ovaries contained significantly fewer (P<0.05) germ cells (i.e. ~110,000) compared to those in the authentic or putative I+ animals (i.e. ~240,000).  The differences in either the Booroola or Inverdale foetuses were not accompanied by any significant differences in plasma or pituitary concentrations of follicle-stimulating hormone or plasma inhibin. The results are consistent with the notion that the FecB and FecX genes influence ovarian development in foetal life.},
	issn = {1176-5283},
	author = {Morris CA and Bisset SA and Baker RL and Watson TG and Johnson DL and Wheeler M}
}
@conference {40495,
	title = {Repeatability estimates and selection flock effects for faecal nematode egg counts in Romney breeding ewes},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {53},
	year = {1993},
	month = {Jan},
	pages = {227-230},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {The effect of melatonin (Regulin},
	issn = {1176-5283},
	author = {Morris CA and Watson TG and Baker RL and Hurford AP and Hosking BC}
}
@conference {40375,
	title = {Effect of selection for productive traits on internal parasite resistance in sheep},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {52},
	year = {1992},
	month = {Jan},
	pages = {53-56},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {The distribution of condensed tannins (CT) in plants, their mode  of action and benefits to ruminant nutrition are briefly reviewed. Data  are presented showing the CT in lotus species reduced rumen degradation  of protein and increased its flow to the intestine, but an increased  amino acid absorption only occurred with Lotus corniculatus,  suggesting the CT in Lotus pedunculatus prevented enzymic  hydrolysis of the protected protein. The extent to which CT in Lotus  pendunculatus depressed nitrogen (N) digestion was similar when fed  as a sole diet and when fed as a third of the diet with pasture. The  implications of these results are that both concentration and type of CT  are important in affecting nutritive value, and that these factors need  to be resolved before an effective plant selection program can be  undertaken.  },
	issn = {1176-5283},
	author = {McEwan JC and Mason P and Baker RL and Clarke JN and Hickey SM and Turner K}
}
@conference {40396,
	title = {Genetic parameters for live weights in fallow deer (Dama dama L.)},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {52},
	year = {1992},
	month = {Jan},
	pages = {133-136},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {It is debatable whether or not genotype influences follicle-  stimulating hormone (FSH) secretion in the Booroola ram. Where  differences in FSH have been reported, these may have been due to  effects of sire, breed and age rather than Booroola genotype. The aim  of this study was to determine if these factors do influence FecB gene  expression in plasma FSH concentrations in the Booroola ram.   A total of 45 Booroola rams of known genotype, breed, age and sire were  blood sampled (10 ml by jugular venepuncture) once daily for 11 days,  castrated, bled once daily for further 13 days, and then three times  weekly for a further 7 weeks.   There were no gene-specific differences in mean plasma FSH  concentrations before or after castration, or in the rate of the post-  castration rise in FSH, between FecBFecB (BB) and Fec+Fec+ (++) rams.  This was consistent when data from rams of three ages (1, 2 or 3 years)  and of either Booroola Merino or Booroola Romney breeds were combined,  or when genotypes, were compared within breeds, or within ages. There  was, however, a significant effect of sire on plasma FSH concentrations,  which was evident before but not after castration. These results  suggest that variation in FSH between sire groups may explain  differences previously attributed to genotype.  },
	issn = {1176-5283},
	author = {Morris CA and McCall JE and Baker RL and Southey BR}
}
@conference {40275,
	title = {Breeding for disease resistance - some historical perspectives, problems and prospects},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {51},
	year = {1991},
	month = {Jan},
	pages = {1-14},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {Red deer stags received a series of immunisations against LHRH  with the aim of suppressing the reduction in growth normally associated  with the rut, but without affecting carcass fatness. Immunisations  commenced at 10 months of age (September), including a series of either  early (October) or late (November) booster immunisations. The  immunisations produced antibodies to LHRH and delayed testes  enlargement, with effects being greatest during summer (December-  January). Liveweight changes were similar in the late booster and  control groups. Mean liveweight declined during the rut (April and May)  in all groups. However, stags that received the early booster were  significantly heavier (P<0.05) than the other two groups in October (11  months old) and from February to October of the following year (15-23  months old). Twenty four hours prior to slaughter (October), mean (},
	issn = {1176-5283},
	author = {Baker RL}
}
@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 {40216,
	title = {The future impact of new opportunities in reproductive physiology and molecular biology on genetic improvement programmes},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {50},
	year = {1990},
	month = {Jan},
	pages = {197-210},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {During the serious outbreak of facial eczema (FE) in 1989, blood   samples were obtained from first-lactation heifers born in 1986, in   order to study any genetic influence on the incidence of FE. Heifers   were located in 60 herds in Northland (14 herds), Auckland (25) and   Taranaki (21). The herds were members of the New Zealand Dairy Board{\textquoteright}s   1985 Sire Proving Scheme for young Jersey bulls. Samples were collected   from 1523 heifers, the daughters of 57 young Jersey sires and 19 other   Jerseys including reference sires from previous years. Blood samples   were analysed for gamma-glutamyltransferase (GGT), an indicator of liver   damage such as due to FE. Overall, 28\% of animals had elevated GGT   values (>=30IU/1), and 72\% (43) of herds had 2 or more animals with   elevated GGT. After setting aside data from the 17 herds where no   elevations of GGT concentration were recorded, the heritability of log e   GGT was 0.31},
	issn = {1176-5283},
	author = {Baker RL and Shannon P and Garrick DJ and Blair HT and Wickham BW}
}
@conference {40168,
	title = {Correlated responses in a weight-selection experiment with beef cattle},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {49},
	year = {1989},
	month = {Jan},
	pages = {203-208},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {Two experiments investigated the post-weaning nutritional requirements and subsequent growth rates of lambs born in May and June. The objective was to produce heavyweight lamb carcasses during the period of otherwise difficult supply (November to January). Experiment 1 examined the feed intake, growth rate and carcass composition of ram and ewe lambs born in late May (weaned late July) offered three pasture allowances. Pasture dry matter allowances of 6\%, 12\% and 22\% of liveweight/head/day resulted in average growth rates of 68, 1109 and 148 g/d, respectively in weaned lambs over the period from July to January. Experiment 2 investigated growth rates of June born lambs fed pelleted supplements (420 g DM/head/day) at pasture. Weaned ram lambs were offered either high protein, medium protein or no supplements at two pasture allowances (12\% and 22\% of live weight/head/day) for 12 weeks between September and December. At the low pasture allowance the high protein supplement gave a 13\% improvement in growth rate (P<0.05) over the medium protein supplement. For the final six weeks of the experiment, half of the high pasture allowance group was offered a white clover dominant pasture. Over this latter period the "clover" group had significantly higher growth rates (233 g/d) than lambs offered either high protein (204 g/d) or medium protein (184 g/d) or no supplements (161 g/d) at high pasture allowances. Carcass weights at slaughter (11th December) were 19.6, 18.6, 18.2 and 16.5 kg, respectively, for these four groups. High protein supplements at pasture increased lamb growth rates, particularly at a low pasture allowance. This would be useful during times of poor or unseasonal pasture production to ensure supply contracts are met, particularly for early, heavyweight lambs.},
	issn = {1176-5283},
	author = {Morris CA and Baker RL and Hunter JC}
}
@conference {40170,
	title = {Performance of visually or objectively culled ewe hoggets},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {49},
	year = {1989},
	month = {Jan},
	pages = {215-220},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {Ewes from five genotypes (Australian Merino, New Zealand Merino, Romney, Australian Merino x Romney, New Zealand Merino x Romney) were examined over 2 years from April 1986 to March 1988. Maiden 2-tooth ewes were used in the first year and mixed aged ewes in year 2. Ewes were treated with CIDRs (14 d) and joined with vasectomised rams every 6 weeks throughout the year. The incidence of oestrus and ovulation and ovulation rate were recorded. In year 1, there were no discernible differences between the five genotypes in the pattern of ovulation response which ranged from about 100\% in April to 70\% in August, dropping to 3\% in September and then to 0\% until a recover to 100\% in the 4 Merino lines and 70\% in the Romney by March. In year 2, the incidence of ovulation for all 5 genotypes was 100\% for April, May and July. In August, 70\% of the Merino lines and 55\% of the Romney and Romney cross lines ovulated. Only the Australian Merino ovulated in November (8\%) while both Merino lines ovulated in December (Australian 4\%, New Zealand 14\%). However in contrast to Year 1, in January the pure Merino lines showed 100\% incidence of ovulation, the cross breed lines 60\% and Romney 10\%. By March, the cross breed incidence had reached 100\% and the Romney 80\%. These data indicate a marked seasonal pattern of ovulation in all 5 genotypes with some indication of an earlier onset to the breeding season in Merino ewes.},
	issn = {1176-5283},
	author = {Harvey TG and Baker RL}
}
@conference {40089,
	title = {The influence of breed on the meat content of beef carcasses for export},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {48},
	year = {1988},
	month = {Jan},
	pages = {57-60},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {A 2 x 2 x 4 factorial trial was performed (n=20), N=320) to investigate the effect of 2 levels of nutrition (high protein diet -23\% crude protein v low protein diet - 10\% crude protein) on the ovarian response to exogenous follicle stimulating hormone (FSH) administration in mixed-age Coopworth ewes. Two preparations of FSH were examined (FSH-P, Burns-Biotec and Folltropin(r), Vetripharm) at 4 different levels (0, 8, 16 and 24 mg equivalents FSH-P). The ovulation rate of both high and low protein intake ewes increased linearly in response to increasing FSH levels (0 mg = 1.2; 8 mg = 3.2; 16 mg = 7.9; 24 mg = 9.6). There was no difference in response between the 2 sources of FSH. Ewes on a high protein intake had a higher ovulation rate when FSH was not administered (mean ovulation rate },
	issn = {1176-5283},
	author = {Butler-Hogg BW and Morris CA and Baker RL and Bass JJ and Mercer G and Duganzich DM}
}
@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 {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 {40030,
	title = {Artificial insemination in sheep - comparison of storage time, dose rate and insemination technique},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {46},
	year = {1986},
	month = {Jan},
	pages = {229-232},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {In 1984 selected Oxford Down (O) and Texel (T) sheep in Denmark and T and Finnish Landrace (F) sheep in Finland were purchased or leased and then assembled for treatment. The ewes were synchronised and superovulated before being subjected to surgical embryo recovery. Recovered embryos with at least 8 cells and intact zona pellucida were then deep frozen. The mean ovulation rate, number of eggs recovered and embryos frozen from the O and T in Denmark were 5.4, 4.4, 1.5 and 7.1, 5.0 and 3.0, respectively. Results for T and F in Finland were 7.5, 4.9, 4.1 and 10.0, 7.0 and 5.8, respectively. A total of 548 embryos was imported into New Zealand. Two-hundred and twenty embryos were thawed and transferred to Coopworth recipients in March and 46 in May 1985. The percentages of embryos surviving to term for the various breeds in March and May were: Denmark 0, 43 and 20; Denmark T, 59 and 7; Finland T, 59 and 55; Finland F, 64 and 50, respectively. Thirty-two Coopworths were inseminated with thawed F sperm deposited via endoscopy and 24 (75\%) lambed producing 28 lambs. The importation of both embryos and semen was very successful.},
	issn = {1176-5283},
	author = {Harvey TG and Johnson DL and Baker RL and Trust BK and Thomson BC}
}
@conference {39986,
	title = {Genetic variation in resistance or tolerance to internal nematode parasites in strains of sheep at Rotomahana},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {46},
	year = {1986},
	month = {Jan},
	pages = {23-26},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {Fifty-six pregnant Romney ewes grazing a ryegrass/white clover pasture were divided into 7 groups of 8 and slaughtered at days 62, 81, 100, 115, 125, 135 and 143 of gestation to remove the conceptus (uterine tissue and membranes, placental fluids and the foetus[es] and determine its total Cu, Zn, Fe, Mn and Se content. The uterus was also removed from 8 ewes just prior to mating. Half the ewes had twin foetuses. The daily rates of deposition of Cu, Zn, Fe, Mn and Se were calculated from the slope of the curves relating the gestational age with the net trace element content of the conceptus. The dietary allowance of Cu, Zn, Fe, Mn and Se for the pregnant ewe was then calculated from the daily deposition rates into the conceptus, determined from this study, and published data on the net requirements for maintenance, coefficients of absorption and DM intakes. The calculated dietary allowances (per kg DM) for single- and twin-bearing ewes, were 7.4 mg Cu, 24 mg Zn, 36 mg Fe, 30 mg Mn and 33 },
	issn = {1176-5283},
	author = {Watson TG and Baker RL and Harvey TG}
}
@conference {40001,
	title = {Inheritance of foot and jaw abnormalities in sheep},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {46},
	year = {1986},
	month = {Jan},
	pages = {93-100},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {There are a total of some 710 000 winterfed sheep in Iceland, all of which are of the native Iceland breed. The organisation of the breeding work is in the hands of the Agricultural Society of Iceland. Sheep recording schemes have a long-standing tradition in Iceland. There are 140 local associations recording about 200 000 ewes. The most important traits in Icelandic sheep breeding are fecundity of ewes and weaning weight of lambs, but conformation and wool quantity are also considered. Level of productivity is high. The use of AI is of great importance in the sheep breeding work. Nearly all the selection of lambs for replacement is within flocks and selection work must be undertaken during a few weeks in the autumn when the sheep are taken from mountain grazing.},
	issn = {1176-5283},
	author = {Baker RL and Clarke JN and Harvey TG and Meyer HH}
}
@conference {39997,
	title = {Some genetic and non-genetic effects on the first oestrus and pregnancy rate of beef heifers},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {46},
	year = {1986},
	month = {Jan},
	pages = {71-76},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {Hogget fleece weight (HFW) (n=10376) and live weight (HLW) records (n=5930) from a highly fecund Coopworth flock were analysed by least squares methods to obtain estimates of environmental effects, heritabilities and genetic and phenotypic correlations. Single-born ewe hoggets were 2.7kg heavier than twins and 4.0kg heavier than triplets, and HFW differences were 0.07kg and 0.13kg respectively. Single-born ram hoggets were 2.9kg heavier than twins and 4.3kg heavier than triplets, HFW differences being 0.04kg and 0.10kg, respectively. Ewe hoggets reared by 3, 4 and 5 year old dams were 0.7, 1.2 and 1.4kg heavier than those reared by 2 year old dams, and the corresponding estimates for ram hoggets were 0.6, 1.8 and 1.3kg. Dam age did not significantly affect HFW; linear regression coefficients of the traits on age were 0.003kgd-1 (ewes) and 0.006kgd (rams) for HFW, and 0.04kgd-1 and 0.08 kgd-1 for HLW. The regression of HFW and HLW was 0.02kgkg-1. Heritability estimates (from paternal half-sib analyses) for HFW were 0.52},
	issn = {1176-5283},
	author = {Morris CA and Baker RL and Bennett GL}
}
@conference {40034,
	title = {Viability of frozen sheep embryos and semen imported from Europe},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {46},
	year = {1986},
	month = {Jan},
	pages = {245-250},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {No abstract supplied},
	issn = {1176-5283},
	author = {Tervit HR and Baker RL and Hoff-Jorgenson R and Lintukangas S and MacDiarmid SC and Rainio V}
}
@conference {39890,
	title = {Embryonic and genetic engineer - Brief Communication},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {44},
	year = {1984},
	month = {Jan},
	pages = {87-90},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {The evidence on the influence of herbage allowance and sward characteristics upon animal performance and herbage production is reviewed briefly, with particular reference to the prediction of animal performance, the use of decision rules in grazing systems and understanding of animal/sward interrelationships. Attention is concentrated on evidence from temperature grasslands, with particular reference to New Zealand results. Simple management rules based on herbage allowance or residual dry matter indices have made a major contribution to improvement in the efficiency of grazing management. However, their use as general indices is restricted by the interdependence of the effects of variation in allowance and sward conditions upon animal performance. Furthermore allowance-based studies make only a limited contribution to understanding of the factors influencing the links between the plant and animal components of grazing systems. It is suggested that more attention should now be concentrated on the causative effects of variation in sward characteristics upon both herbage production and animal performance},
	issn = {1176-5283},
	author = {Baker RL}
}
@conference {39911,
	title = {Terminal sire comparisons of the Charolais and Murray Grey breeds for calving difficulty, calf survival and growth},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {44},
	year = {1984},
	month = {Jan},
	pages = {177-180},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {An enzyme-linked immunosorbent assay (ELISA) system has been developed for the detection of an endophytic fungus of Lolium perenne. The technique has been used to demonstrate quantitative differences in the spatial and tissue distribution of the endophyte in vegetative and reproductive tillers of infected plants. The influence of this on pasture toxicity is discussed. The nature of the endophyte antigen is described and the relationship between the antigen and toxicity discussed.},
	issn = {1176-5283},
	author = {Morris CA and Baker RL and Wilson JA}
}
@conference {39855,
	title = {Ten years reproduction performance data from Angus and Hereford weight selection herds},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {43},
	year = {1983},
	month = {Jan},
	pages = {185-188},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {A sheep selection efficiency analysis developed to supplement recording on Sheeplan was applied to performance records in 8 groups- breeding scheme central flocks. Average flock size was 756 ewes, and 170 rams were selected from 4 birth-years for central flock use. Selection efficiencies for the Sheeplan two-tooth index were 64\%, 74\%, 70\% and 68\% for rams born in 1977/80 and the corresponding efficiencies for two-tooth ewes were 29\%, 27\%, 42\% and 44\% respectively. The selection of two-tooth ram and ewe replacements is expected to result in annual rates of improvement of 0.67\% in lambing rate, 0.16 kg in weaning weight, 0.34 kg in hogget live weight and 0.029 kg in hogget fleece weight. Other traits breeders emphasised included structural soundness, wool quality and hogget lambing performance. Opportunities for increasing rates of progress in sire breeding programmes are discussed.},
	issn = {1176-5283},
	author = {Morris CA and Baker RL and Hunter JC}
}
@conference {39735,
	title = {Effect of mating Romney ewe hoggets on lifetime production - Preliminary results},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {41},
	year = {1981},
	month = {Jan},
	pages = {198-203},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	issn = {1176-5283},
	author = {Baker RL and Clarke JN and Diprose GD}
}
@conference {39745,
	title = {Performance of crossbred cows in the Ruakura beef breed evaluation trial},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {41},
	year = {1981},
	month = {Jan},
	pages = {254-266},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	issn = {1176-5283},
	author = {Baker RL and Carter AH and Muller JP}
}
@conference {39702,
	title = {Preliminary results of selection for yearling or 18-month weight in Angus and Hereford cattle},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {40},
	year = {1980},
	month = {Jan},
	pages = {304-311},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	issn = {1176-5283},
	author = {Baker RL and Carter AH and Hunter JC}
}
@conference {39701,
	title = {The role of maternal effects on the efficiency of selection in beef cattle - A review},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {40},
	year = {1980},
	month = {Jan},
	pages = {285-303},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	issn = {1176-5283},
	author = {Baker RL}
}
@conference {39627,
	title = {The effect of selection for body weight at different ages on fat deposition in mice},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {39},
	year = {1979},
	month = {Jan},
	pages = {118-128},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	issn = {1176-5283},
	author = {Baker RL and Carter AH and Cox EH}
}
@conference {39523,
	title = {Carcass composition of purebred and crossbred Angus steers},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {36},
	year = {1976},
	month = {Jan},
	pages = {198-203},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	issn = {1176-5283},
	author = {Bass JJ and Colomer-Rocher F and Baker RL and Carter AH and Jarnet MP and Woods EG}
}
@conference {39526,
	title = {The value of on-farm performance selection of Angus and Hereford bulls},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {36},
	year = {1976},
	month = {Jan},
	pages = {216-221},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	issn = {1176-5283},
	author = {Baker RL and Carter AH}
}
@conference {39472,
	title = {The carcass composition of Angus, Hereford x, Angus, Friesian x Angus, Charolaise x Angus and South Devon x Angus steers},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {35},
	year = {1975},
	month = {Jan},
	pages = {112-118},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	issn = {1176-5283},
	author = {Bass JJ and Baker RL and Carter AH and Jones KR}
}
@conference {39471,
	title = {Progeny testing Angus and Hereford bulls for growth performance},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {35},
	year = {1975},
	month = {Jan},
	pages = {103-111},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	issn = {1176-5283},
	author = {Baker RL and Carter AH and Beatson PR}
}
@conference {39434,
	title = {Influence of birth date and dam{\textquoteright}s age on early growth in beef cattle},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {34},
	year = {1974},
	month = {Jan},
	pages = {115-130},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	issn = {1176-5283},
	author = {Baker RL and Carter AH and Cox EH and Templer HA}
}
@conference {39412,
	title = {Sources of variation for wool, body weight and oestrous characters in Romney hoggets},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {34},
	year = {1974},
	month = {Jan},
	pages = {19-22},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	issn = {1176-5283},
	author = {Baker RL and Clarke JN and Carter AH}
}
@conference {39404,
	title = {Beef Cattle Improvement through Performance Recording and Selection},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {33},
	year = {1973},
	month = {Jan},
	pages = {194-203},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	issn = {1176-5283},
	author = {Baker RL}
}
