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Tesi sul tema "Sheep"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 25 luglio 2025

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1

Corke, M. J. "The welfare of sheep with sheep scab (Psoroptes ovis infestation)." Thesis, University of Cambridge, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.598003.

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Abstract (sommario):

The effects of sheep scab, (<I>Psoroptes ovis</I> infestation) on the welfare of sheep were studied. Flocks of sheep naturally infested with sheep scab and flocks of uninfested sheep, were studied before and after treatment with acaricides. A group of sheep, experimentally infested with <I>Psoroptes ovis</I> mites, were studied throughout the infestation. Behaviour was studied using focal and scan sampling techniques. Sheep scab resulted in increases in rubbing, scratching and biting. Rubbing and scratching in infested sheep were sometimes accompanied by non-functional mouthing, considered to

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2

Glendinning, Laura. "Sheep lung microbiota." Thesis, University of Edinburgh, 2017. http://hdl.handle.net/1842/29541.

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Abstract (sommario):

Until recently it was assumed that the healthy mammalian lung did not harbour a microbiota, unlike other body sites. However, through the use of sequencing based technologies this has been shown to not be the case. Low biomass communities of microbes can be identified in the healthy lung and the lung microbiota in various diseases states has been shown to differ form these 'healthy' communities. The sheep respiratory microbiota is of interest from both an animal health perspective and due to the potential use of the sheep as a large animal model for studying the lung microbiota. In this thesis

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3

Abdulkhaliq, Ahed. "Estimation of phenotypic and genetic parameters for some reproductive traits in Columbia, Suffolk and Targhee sheep breeds." Connect to resource, 1986. http://rave.ohiolink.edu/etdc/view.cgi?acc%5Fnum=osu1244132589.

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4

Regnault, Timothy Robert Hume. "Orchestrated partitioning of maternal nutrients during ovine pregnancy /." View thesis View thesis, 1997. http://library.uws.edu.au/adt-NUWS/public/adt-NUWS20030513.111110/index.html.

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Thesis (Ph. D. of Philosophy)--University of Western Sydney, Hawkesbury, 1997.<br>"A thesis submitted to the School of Agriculture and Rural Development, Faculty of Agriculture and Horticulture, University of Western Sydney Hawkesbury, in part fulfilment of the requirements for the Degree of Doctor of Philosophy." Includes bibliographical references (p. 236-267).

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5

Alink, Frances. "Maternal and peri-ovulatory nutritional effects on the expression of the Inverdale (FecX1) fecundity gene in texel X Scottish hillbreed sheep." Thesis, Available from the University of Aberdeen Library and Historic Collections Digital Resources, 2009. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?application=DIGITOOL-3&owner=resourcediscovery&custom_att_2=simple_viewer&pid=25795.

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6

Stockman, Catherine Ann. "The physiological and behavioural responses of sheep exposed to heat load within intensive sheep industries." Thesis, Stockman, Catherine Ann (2006) The physiological and behavioural responses of sheep exposed to heat load within intensive sheep industries. PhD thesis, Murdoch University, 2006. https://researchrepository.murdoch.edu.au/id/eprint/437/.

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Abstract (sommario):

The live export and feedlotting industries are the major intensive sheep industries in Australia. During live shipment, sheep are exposed to prolonged periods of high heat and humidity, with little relief for several days, while environmental conditions in a Western Australian sheep feedlot have not yet been assessed. The research described in this thesis was conducted to determine the physiological responses of sheep to conditions within the live export and feedlotting industries, with particular focus on that of heat stress. Merino wethers and Awassi rams developed significant change in p

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7

Stockman, Catherine Ann. "The physiological and behavioural responses of sheep exposed to heat load within intensive sheep industries." Stockman, Catherine Ann (2006) The physiological and behavioural responses of sheep exposed to heat load within intensive sheep industries. PhD thesis, Murdoch University, 2006. http://researchrepository.murdoch.edu.au/437/.

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Abstract (sommario):

The live export and feedlotting industries are the major intensive sheep industries in Australia. During live shipment, sheep are exposed to prolonged periods of high heat and humidity, with little relief for several days, while environmental conditions in a Western Australian sheep feedlot have not yet been assessed. The research described in this thesis was conducted to determine the physiological responses of sheep to conditions within the live export and feedlotting industries, with particular focus on that of heat stress. Merino wethers and Awassi rams developed significant change in p

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8

Hou, Xian Zhi. "Diet selection in sheep." Thesis, University of Edinburgh, 1991. http://hdl.handle.net/1842/28250.

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9

Ezaz, Zere. "Studies in Menz sheep." Thesis, Bangor University, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.276196.

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10

Mason, Sam. "Toxoplasma gondii in sheep." Thesis, University of Leeds, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.556024.

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Abstract (sommario):

Toxoplasma gondii infects sheep horizontally (from cat faeces) or vertically (transplacentally). Vertically infected lambs sometimes die. Here, transmission and performance impacts were considered in one Charollais flock and one Swaledale flock. B1-PCR was performed on umbilical cord, heart and brain. MAT was performed on blood and pleural effusion. IgG-ELISA was performed on colostrum. B1-PCR was more sensitive than four other methods, producing a band in 50% of replicates when each replicate contained 0.02 parasite genome copies. 16/243 (6.6%) viable Charollais, 30/263 (11.4%) viable Swaleda

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11

Markey, Bryan K. J. "Chlamydial infection of sheep." Thesis, Queen's University Belfast, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.334590.

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12

Young, C. S. "Preslaughter handling of sheep." Thesis, University of Bristol, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.233699.

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13

Fleischman, Kimberly Ann. "Sheep Hill Community Tree." VCU Scholars Compass, 2004. http://scholarscompass.vcu.edu/etd/1357.

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Abstract (sommario):

An urban community is a fusion of new and old that is constantly changing. We understand better the plight of a community through raising awareness of its unique history and visual character. Linking individual and community experiences offers an opportunity for dialogue, especially as long-time residents and their new neighbors learn about their different pasts and explore their common future. Community building happens from within, when many individuals sharing common values create positive change.

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14

Suhubdy. "Ingestive behaviour in sheep /." St. Lucia, Qld, 2002. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe16725.pdf.

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15

Bortolami, Elisa. "Advances in sheep analgesia." Doctoral thesis, Università degli studi di Padova, 2015. http://hdl.handle.net/11577/3424188.

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Abstract (sommario):

Sheep (Ovis aries) are widely used in experimental settings and breeding system, nevertheless pain treatment in this species seems to be overlooked. The first two studies described in this thesis were designed to evaluate administration of analgesics both in the experimental and clinical setting. The third study evaluated the pharmacokinetics and antinociceptive effects of tramadol and its metabolite O-desmethyltramadol (M1) in sheep in a preclinical model of pain. The first study consisted of a meta-analysis of the reported use of analgesics in sheep for experimental purposes. Studies invol

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16

Holmberg, Bradford J. "Influence of the vagus nerve and urocortin on the nutrition-reproduction axis of the ovine /." free to MU campus, to others for purchase, 2002. http://wwwlib.umi.com/cr/mo/fullcit?p3074407.

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17

Hosking, Brenton John. "Evaluation of nutrient intake and digestion in grazing sheep receiving supplements : thesis submitted for the degree of Doctor of Philosophy." Title page, summary and contents only, 1987. http://web4.library.adelaide.edu.au/theses/09PH/09phh826.pdf.

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Includes bibliographical references (leaves 290-309) Investigates aspects of the intake and utilization of barley grain and grain legume supplements by sheep fed low quality pasture hay and when grazing mature summer pastures.

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18

Wirz-Dittus, Sophie Chantal Wirz-Dittus Sophie Chantal Wirz-Dittus Sophie Chantal. "Salmonella abortusovis infection in sheep /." [S.l.] : [s.n.], 2009. http://www.ub.unibe.ch/content/bibliotheken_sammlungen/sondersammlungen/dissen_bestellformular/index_ger.html.

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19

Hollywood, Mark Anthony. "Innervation of sheep mesenteric lymphatics." Thesis, Queen's University Belfast, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.241384.

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20

Hopkins, John. "Lymphoid physiology of the sheep." Thesis, University of Edinburgh, 2000. http://hdl.handle.net/1842/29805.

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The aim of this thesis is to bring together and summarize the results of twenty-five years of active research into the immunology and physiology of the mammalian lymphoid system using the sheep as the model species. For this work I have exploited the cannulation of peripheral lymphatics, which enables the monitoring of lymph, lymphocytes and dendritic cells that are constantly trafficking from the skin or from lymph nodes. The use of this technique in the sheep permits access to large numbers of lymph-borne cells over extensive periods and in a form far closer to their <i>in vivo</i> non-activ

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21

Jones, Philip Anthony. "B cell differentiation in sheep." Thesis, University of Edinburgh, 1988. http://hdl.handle.net/1842/30327.

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The ileal Peyer's patch (IPP) of lambs is a region of intense lymphopoiesis and B cell development. Monoclonal antibodies against ovine lymphoctye antigens have been used to characterise the IPP lymphocyte. Three murine monoclonal antibodies against ovine IgM, IgG1 and Ig light chain were produced and are described fully. IgM and MHC class II antigens are expressed on the vast majority of IPP cells whilst cells bearing other serum Ig isotypes and T cell antigens are rare. A novel Ig molecule appears to be coexpressed with IgM, it is proposed that this is the ovine equivalent of IgD. IPP cells

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22

Harris, Lisa Kim. "Recreation in mountain sheep habitat." Diss., The University of Arizona, 1992. http://hdl.handle.net/10150/186064.

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I described recreational use in mountain sheep (Ovis canadensis mexicana) habitat in the Pusch Ridge Wilderness (PRW), Tucson, Arizona. I also examined human attitudes held by PRW recreationists and homeowners within 1 mile (1.6 km) of PRW boundary towards several mountain sheep management options. I used geographic information system modeling and social science survey methodology. Recreational use along two trails that traverse mountain sheep habitat was frequent (66 individuals/day use Pima Canyon trail, 26 individuals/day use Romero Canyon trail) and primarily limited to the lower 3 miles (

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23

Tarango, Arambula Luis Antonio. "Desert bighorn sheep in Mexico." Diss., The University of Arizona, 2000. http://hdl.handle.net/10150/289197.

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Abstract (sommario):

The management of bighorn sheep in Mexico is not based on empirical data. We conducted phone interviews and a literature review to determine published information on desert bighorn sheep in Mexico. Most information on bighorn sheep was published prior to 1983 and focused on population size and structure. We concluded that desert bighorn sheep in Mexico are in need of further research. To provide better management to bighorn sheep, research needs to focus on basic life history strategies (e.g., minimum viable population size, diet, habitat relationships, movements, predation, diseases, and meta

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24

Warrick, Gregory David. "MOUNTAIN SHEEP FORAGING BEHAVIOR (ARIZONA)." Thesis, The University of Arizona, 1985. http://hdl.handle.net/10150/291298.

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25

Dafoe, Julia Mae. "Effect of supplemental safflower seed and vitamin E to late gestating ewes on lamb growth and thermogenesis." Thesis, Montana State University, 2006. http://etd.lib.montana.edu/etd/2006/dafoe/DafoeJ1206.pdf.

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26

Campbell, Angus John Dugald. "The effect of time of shearing on wool production and management of a spring-lambing merino flock /." Connect to thesis, 2006. http://eprints.unimelb.edu.au/archive/00003254.

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27

Buller, Nicky. "Molecular epidemiology, clonality and virulence of Dichelobacter nodosus, the agent of ovine footrot." Thesis, Buller, Nicky (2005) Molecular epidemiology, clonality and virulence of Dichelobacter nodosus, the agent of ovine footrot. PhD thesis, Murdoch University, 2005. https://researchrepository.murdoch.edu.au/id/eprint/441/.

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Abstract (sommario):

Dichelobacter nodosus, an anaerobic bacterium, is the major transmissible agent of ovine footrot. The disease expresses as a virulent or benign lesion in the hoof. Virulence is related to the production of serine proteases, particularly a thermostable protease. Isolates of D. nodosus are characterised according to the type of protease produced (either heat-stable or heat-labile) and the electrophoretogram (zymogram) of the protease. This study reports on the use of the DNA-based typing techniques Pulsed-Field Gel Electrophoresis (PFGE) and Infrequent-Restriction-Site-PCR (IRS-PCR) to investiga

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28

Buller, Nicky. "Molecular epidemiology, clonality and virulence of Dichelobacter nodosus, the agent of ovine footrot." Buller, Nicky (2005) Molecular epidemiology, clonality and virulence of Dichelobacter nodosus, the agent of ovine footrot. PhD thesis, Murdoch University, 2005. http://researchrepository.murdoch.edu.au/441/.

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Abstract (sommario):

Dichelobacter nodosus, an anaerobic bacterium, is the major transmissible agent of ovine footrot. The disease expresses as a virulent or benign lesion in the hoof. Virulence is related to the production of serine proteases, particularly a thermostable protease. Isolates of D. nodosus are characterised according to the type of protease produced (either heat-stable or heat-labile) and the electrophoretogram (zymogram) of the protease. This study reports on the use of the DNA-based typing techniques Pulsed-Field Gel Electrophoresis (PFGE) and Infrequent-Restriction-Site-PCR (IRS-PCR) to investiga

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29

Grobler, Hermanus Johannes Fourie. "Veldram performance testing of dorper rams in Namibia : performance testing, progency testing and factors influencing sale price of rams." Thesis, Nelson Mandela Metropolitan University, 2010. http://hdl.handle.net/10948/1545.

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The study aims to determine the contribution made by available ram growth- and breed standard parameters on the sale price of auctioned rams in Namibia. These findings serve as an indication of the importance ram buyers place on individual parameters in selecting rams for breeding purposes. It furthermore tries to establish whether scientific measurement for the estimation of ram breeding values takes precedence over subjective appraisal. The analysis of the 100 day and 270 day growth performance of the progeny of selected Veldram tested rams were used to evaluate the accuracy of the estimatio

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30

au, cstockman@agric wa gov, and Catherine Ann Stockman. "The Physiological and Behavioural Responses of Sheep Exposed to Heat Load within Intensive Sheep Industries." Murdoch University, 2006. http://wwwlib.murdoch.edu.au/adt/browse/view/adt-MU20070820.143149.

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Abstract (sommario):

The live export and feedlotting industries are the major intensive sheep industries in Australia. During live shipment, sheep are exposed to prolonged periods of high heat and humidity, with little relief for several days, while environmental conditions in a Western Australian sheep feedlot have not yet been assessed. The research described in this thesis was conducted to determine the physiological responses of sheep to conditions within the live export and feedlotting industries, with particular focus on that of heat stress. Merino wethers and Awassi rams developed significant change in phy

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31

Quintana, Casares Pablo Ignacio. "Studies on the relationship between characteristics of ram semen and fertility." Title page, contents and summary only, 1991. http://web4.library.adelaide.edu.au/theses/09PH/09phq7.pdf.

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Includes bibliographical references (leaves 274-316) Examines several aspects of male reproduction in the sheep, and how these are related to fertility in the female when semen is introduced by natural mating or artificial insemination.

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32

Jacobs, Salmon Stephanus. "Kwalitatiewe en kwantitatiewe inname van staandehooi van twee Cenchrus ciliaris kultivars (Molopo en Gayndah) deur skape." Pretoria [s.n.], 2005. http://upetd.up.ac.za/thesis/available/etd-04042007-102237.

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33

Neary, Kathleen Ida. "In vitro comparison of satellite cells isolated from normal and callipyge sheep exposed to growth promoting compounds." Thesis, Montana State University, 2007. http://etd.lib.montana.edu/etd/2007/neary/NearyK0507.pdf.

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34

Tudor, G. D. "The influence of diet on the chemical composition of cattle and sheep /." Title page, table of contents and abstract only, 1990. http://web4.library.adelaide.edu.au/theses/09PH/09pht912.pdf.

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35

Reader, Karen Lee. "A quantitative ultrastructural study of oocytes during the early stages of ovarian follicular development in Booroola and wild-type sheep : a thesis submitted to the Victoria University of Wellington in fulfilment of the requirements for the degree of Master of Science in Cell and Molecular Bioscience /." ResearchArchive@Victoria e-Thesis, 2007. http://hdl.handle.net/10063/270.

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36

Lee, Karen. "Reproductive management of semi-intensive Döhne merino ewes fed with different protein supplements." Pretoria : [s.n.], 2009. http://upetd.up.ac.za/thesis/available/etd-08072009-175647.

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37

Nicholls, Natalie Anne Harriette. "Are scrapie-susceptible sheep more productive?" Thesis, University of Edinburgh, 2007. http://hdl.handle.net/1842/29299.

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A relationship between scrapie susceptibility, which is determined by <i>PrP </i>genotype, and valuable production traits has long been noted by sheep farmers, with many claiming that their ‘best’ sheep often are found to be susceptible to scrapie, or have close siblings that are susceptible to scrapie. There have been several historical anecdotal reports to support this observation, but only recently has the hypothesis, that scrapie-susceptible sheep are more productive, been investigated in scientific study. This thesis contains the results of several such studies and is concluded by an inve

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38

Robinson, Brenton Scott. "Choline nutrition and metabolism in sheep /." Title page, contents and summary only, 1985. http://web4.library.adelaide.edu.au/theses/09PH/09phr658.pdf.

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39

Zhang, Runhou 1963. "Manipulating fatty acids in sheep milk." Thesis, McGill University, 2005. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=102236.

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Four studies were conducted to investigate some factors affecting milk fatty acid composition of dairy ewes. The first study was performed to determine the influence of freezing temperatures and storage time on ovine milk composition and cheese making. The other three experiments were conducted to examine the effects of dietary added fats with different profiles of fatty acids from canola, sunflower and flaxseeds on animal performance, nutrient utilization, milk yield and cheese making. The main emphasis was on fatty acid composition, particularly CLA and Omega-3 fatty acids, in milk and chees

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40

Stevenson, Ian Roxburgh. "Male-biased mortality in Soay sheep." Thesis, University of Cambridge, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.321000.

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41

Nassiri, Mohammad Taghi Beigi. "Aspects of prolificacy in Cambridge sheep." Thesis, Bangor University, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.321435.

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42

Kitching, Richard Paul. "Studies on sheep and goat pox." Thesis, University of Edinburgh, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.482688.

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43

Townsend, S. J. "Genetic diversity and domestication in sheep." Thesis, University of East Anglia, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.368146.

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44

Toland, Helen M. "Pacemaking in sheep mesenteric lymphatic vessels." Thesis, Queen's University Belfast, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.301060.

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45

Beresford, Nicholas A. "Radiocaesium variability in upland sheep flocks." Thesis, University of Nottingham, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.273191.

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46

McNeil, Christopher John. "Glutamine and lymphocyte metabolism of sheep." Thesis, University of Newcastle Upon Tyne, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.391973.

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47

Philips, Helen Louise. "Enteric and abortion chlamydia in sheep." Thesis, University of Liverpool, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.385154.

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48

Bates, Anne Elizabeth. "The effect of copper on sheep." Thesis, University of Liverpool, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.406722.

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49

Hansen, Helle RuÌˆsz. "Investigation of arsenosugar metabolism in sheep." Thesis, University of Aberdeen, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.409245.

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This thesis describes part of an on-going study of the metabolism of arsenosugars in sheep living on a diet of seaweed. Two major analytical techniques have been combined in a three-pronged approach. ICP-MS has served to quantify total arsenic in seaweed, urine and faeces and has enabled a mass balance to be drawn up indicating that around 86% of ingested arsenic (average 35 mg/d) is excreted in the urine, 13% in the faeces and less than 1% is accumulated in the animal. HPLC-ICP-MS has served to quantify both known and unknown metabolites at down to low ng/g levels in urine and in faeces, th

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50

Kaler, Jasmeet. "Epidemiological investigations into lameness in sheep." Thesis, University of Warwick, 2008. http://wrap.warwick.ac.uk/2966/.

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Lameness is the greatest health and welfare concern in sheep flocks in the U. K. This thesis presents research on epidemiology of lameness in sheep Most previous studies quantifying lameness and its causes are based on the premise that farmers can identify the causes of lameness and recognise lame versus sound sheep. In 2005, a postal questionnaire was sent to a random sample of English sheep farmers to investigate whether farmers could correctly name six common foot lesions in sheep (interdigital dermatitis (ID), footrot (FR), contagious ovine digital dermatitis (CODD), shelly hoof, foot absc

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