1,408 research outputs found
Post-weaning weight is highly genetically correlated to adult ewe weights
No full textS. F. Walkom, F. D. Brien, M.L. Hebart, N. M. Fogarty, S. Hatcher and W. S. Pitchfor
The use of intuition in homeopathic clinical decision making: an interpretative phenomenological study
No full textWhile intuition plays a role in clinical decision making within conventional medicine, little is understood about its use in complementary and alternative medicine (CAM). The aim of this qualitative study was to investigate intuition from the perspective of homeopathic practitioners; its’ manifestation, how it was recognized, its origins and when it was used within daily clinical practice. Semi-structured interviews were carried out with clinically experienced non-National Health Service (NHS) UK homeopathic practitioners. Interpretative phenomenological analysis was used to analyze the data. Homeopaths reported many similarities with conventional medical practitioner regarding the nature, perceived origin and manifestation of their intuitions in clinical practice. Intuition was used in two key aspects of the consultation: (i) to enhance the practitioner–patient relationship, these were generally trusted; and (ii) intuitions relating to the prescribing decision. Homeopaths were cautious about these latter intuitions, testing any intuitive thoughts through deductive reasoning before accepting them. Their reluctance is not surprising given the consequences for patient care, but we propose this also reflects homeopaths’ sensitivity to the academic and medical mistrust of both homeopathy and intuition. This study is the first to explore the use of intuition in decision making in any form of complementary medicine. The similarities with conventional practitioners may provide confidence in validating intuition as a legitimate part of the decision making process for these specific practitioners. Further work is needed to elucidate if these findings reflect intuitive use in clinical practice of other CAM practitioners in both private and NHS (i.e. time limited) setting
Genetic and phenotypic parameters for temperament in weaned lambs
No full textJ. E. Hocking Edwards, F. D. Brien, M. L. Hebart, G. N. Hinch, J. Hoad, K. W. Hart, G. Gaunt, M. Robertson, G. Refshuage and T. Bird-Gardine
The relationships between crutch cover score and production and easy care traits in merino sheep
No full textA preliminary study of the relationship between crutch cover score, measured at hogget and adult age, and production and easy care traits found moderately negative phenotypic correlations between hogget score and hogget fibre diameter and body weight, and a moderately positive phenotypic correlation with hogget face cover. Genetic correlations between hogget crutch cover score and hogget fibre diameter, staple strength, staple length and body weight were moderately to strongly negative and strongly positive for coefficient of variation of fibre diameter and face cover. Correlations with hogget fleece weight, yield, neck and body wrinkle were not significantly different to zero. Heritability of crutch cover score at both ages was high. Strategies to eliminate the need for mulesing by placing selection emphasis on decreased hogget crutch cover should result in genetic gains in hogget performance for body weight, staple strength, staple length and to a lesser degree plainness but attention should be paid to fibre diameter to prevent it from increasing. Better estimates of the genetic correlations between hogget crutch cover score, other hogget traits and adult traits are needed to predict future hogget and adult flock performance, however our preliminary results suggest that selection to reduce hogget crutch cover should give minor gains in adult body weight and reproductive performance, with negligible impact on adult fleece weight in the current flock.D. H. Smith, E. Safari, F. D. Brien, K. S. Jaensch and R. J. Grimsonhttp://www.aaabg.org/proceedings18/index.htmlhttp://trove.nla.gov.au/work/3642077
Figure 5 in Anatomical study of two previously undescribed specimens of Clevosaurus hudsoni (Lepidosauria: Rhynchocephalia) from Cromhall Quarry, UK, aided by computed tomography, yields additional information on the skeleton and hitherto undescribed bones
No full textFigure 5. Photographs and surface models of Clevosaurus hudsoni specimen NHMUK PV R36832. Left maxilla in (A) lateral and (B) medial views. Parietals in (C) dorsal and (D) ventral views. Frontals in (E) dorsal and (F) ventral views.Published as part of O, Aileen, Brien, Whiteside, David I. & Marshall, John E. A., 2018, Anatomical study of two previously undescribed specimens of Clevosaurus hudsoni (Lepidosauria: Rhynchocephalia) from Cromhall Quarry, UK, aided by computed tomography, yields additional information on the skeleton and hitherto undescribed bones, pp. 163-195 in Zoological Journal of the Linnean Society 183 on page 172, DOI: 10.1093/zoolinnean/zlx087, http://zenodo.org/record/571467
Season and reproductive status rather than genetics factors influence change in ewe weight and fat over time. 3. Analysis of Merino ewes
No full textPublished: 22 April 2014The profitability of southern Australian sheep production systems depends on the optimisation of stocking rates by meeting the nutritional demands of the breeding ewe while effectively utilising grown pasture. The aim of the study was to evaluate the genetic variation in liveweight and body condition of Merino ewes across their breeding life within a wool-based enterprise. The results were consistent with findings in crossbred ewes and showed that the genetic component of weight and body condition remained constant across the production cycle and age. The overall additive genetic effect accounted for 92% of the genetic variation in weight of Merino ewes bred across five production cycles. A genetic correlation of 0.85 suggested that ewes that were superior at maintaining their condition when rearing a single lamb would maintain this superiority when rearing multiple lambs. To improve weight and condition of Merino ewes during the ‘tough’ times, when nutrient requirements are not met by the pasture, selection can be made at any time and this will result in increased genetic condition at all times.S. F. Walkom, F. D. Brien, M. L. Hebart, N. M. Fogarty, S. Hatcher and W. S. Pitchfor
Group leaders' meeting - July 30, 1956
No full textPresent: H. D. Benington, D. R. Brown, W. J. Canty, C. L. Corderman, N. L. Daggett, S. H. Dodd, R. S. Fallows, J. F. Jacobs, B. E. Morris, K. E. McVicar, J. A. 0'Brien, W. N. Papian, J. C. Proctor, and E. S. RichMinutes of weekly group leader meeting discussing card processing, maintenance of programs for ESS, magnetic tape, XD-1 time allocation, review of past three weeks, and SAGE Improvement Committee
The genetics of temperament traits in merino sheep
No full textInvestigations were made into the genetics of temperament in Merino ewes, with emphasis on those aspects which might have associations with maternal behaviour and postnatal survival of lambs. A data set of over 2000 animals and more than 20,000 records was analysed for estimation of genetic parameters. The heritability of ewe mothering temperament was 0.39 ± 0.02, indicating a moderate genetic component to this behavioural trait. Agitation score and flight time were less heritable (0.20 ± 0.05 and 0.12 ± 0.05 respectively). The heritability of litter survival was low (0.09 ± 0.01) and the genetic correlations between this and ewe mothering temperament, agitation score and flight time were 0.18 ± 0.08, 0.39 ± 0.18 and 0.09 ± 0.27 respectively. Estimated genetic correlations between temperament traits and wool traits were low, with the exception of staple length, which was negatively genetically correlated to agitation score (rg = -0.26 ± 0.03). These results suggest that if temperament is used as a selection criterion, although no antagonistic results will be seen in wool production, there would be no advantage in litter survival compared with undertaking direct selection for the trait. Further, if selection is practised for low agitation score, our results suggest that litter survival may be slightly reduced in future generations.K. L. Lennon, M. L. Hebart, F. D. Brien and P. I. Hyndhttp://www.aaabg.org/proceedings18/index.htmlhttp://trove.nla.gov.au/work/3642077
Meat quality in merino ram hoggets
No full textGenetic, environmental and management effects on meat pH and colour and their relationship with other production traits were estimated from pooled data based on carcase measurements from 5870 Merino hogget rams from New South Wales, South Australia and Western Australia. Principal component analyses failed to generate a trait which would be superior to the direct use of meat pH and colour as criteria in selection against dark cutting meat. No genetic or environmental links were found between dark cutting and production traits that could provide a causative effect or potential for indirect selection. In addition to parameter estimates, the contribution of various sources of variation for meat pH and colour have been quantified and the implications of the findings are discussed.S. F. Walkom, F.D. Brien, M.L. Hebart, J.C. Greeff, D.L. Hopkins and W.S. Pitchfor
Selection strategies for the genetic improvement of reproductive performance in sheep
No full textSelection strategies for the genetic improvement of reproductive performance of sheep in Australia are discussed in the context of current and emerging industry practice. The predicted rates of gain in reproductive rate are compared with varying amounts of pedigree and performance records of relatives. The paper also considers the merits of exploiting indirect as well as direct selection, including selection on the component traits of reproductive rate.F.D. Brien, G.N. Hinch, J.H.J. van der Werf, D.J. Brown, and A.A. Swa
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