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Thematische Bibliographien / Cattle, canada / Dissertationen

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Dissertationen zum Thema „Cattle, canada“

Autor: Grafiati

Veröffentlicht am 4. Juni 2021

Zuletzt aktualisiert am 29. Juli 2025

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1

Kakwaya, Damian Saranga Muhongo. "Canadian/New Zealand genotype-environment interaction trial : comparison of growth traits of Canadian and New Zealand dairy cattle in Canada." Thesis, University of British Columbia, 1991. http://hdl.handle.net/2429/29883.

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This study, being part of a larger project - "Canadian/New Zealand GxE Interaction Trial" - is comparing Canadian and New Zealand sired heifers for growth traits within Canada, since differences for growth traits were found in the Polish strain comparison (Jasiorowski et al., 1987) and due to selection programs in the two countries. Twenty Canadian Holstein and twenty New Zealand Friesian progeny tested, A.I. bulls were randomly mated to over 1,000 cows in 10 Canadian herds. 3,539 records of weight and wither height from 475 heifers (i.e. 241 Canadian and 234 New Zealand sired) were generated

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2

Xu, Xiaoqiong 1982. "The effect of BSE on the pricing behaviour of the Canadian cattle slaughtering industry /." Thesis, McGill University, 2006. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=101695.

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The closure of the US border to Canadian live cattle and beef products after the confirmation of a single Canadian BSE case in May, 2003 seriously jeopardized the Canadian beef cattle industry, which had relied heavily on exports. The inventory of cattle rapidly increased and farmers were paid record low prices for live cattle. But at the same time, the cattle slaughtering industry experienced a substantial increase in profits. The enlarged price spread between the value of live cattle and beef steak raised concerns about oligopsony market power in the live cattle market. This thesis investiga

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3

Ralston, Brenda J. "A comparative study of giardia and cryptosporidium infections in feedlot cattle in Western Australia and Alberta, Canada /." Murdoch University Digital Theses Program, 2009. http://wwwlib.murdoch.edu.au/adt/browse/view/adt-MU20091117.124124.

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4

St-Onge, Annie. "Economic values of traits for dairy cattle improvement estimated using field recorded data." Thesis, McGill University, 2000. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=31546.

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The objective of this study was to compute economic values of traits for dairy cattle improvement using an empirical approach. Field recorded data were obtained from the Programme d'Analyse des Troupeaux Laitiers du Quebec (PATLQ) and genetic evaluation data were obtained from the Canadian Dairy Network (CDN). After the editing procedure, the data set consisted of 195,001 lifetime records of Holstein, Ayrshire, Jersey, Brown Swiss and Canadienne cows which calved for the first time between January 1980 and December 1994.<br>Different profitability measurements were computed and used as the dep

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5

ca, brenda ralston@gov ab, and Brenda Jane Ralston. "A comparative study of giardia and cryptosporidium infections in feedlot cattle in Western Australia and Alberta, Canada." Murdoch University, 2009. http://wwwlib.murdoch.edu.au/adt/browse/view/adt-MU20091117.124124.

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A comparative study of the parasites Cryptosporidium andersoni and Giardia duodenalis in feedlot cattle in Western Australia (n=502) and Alberta, Canada (n=852) was conducted. The objectives were to determine the prevalence, infection patterns and impact on cattle performance of these protozoan parasites. Utilizing molecular tools G. duodenalis was genotyped and C. andersoni samples were confirmed positive. C. parvum was absent from all cattle sampled in Alberta, Canada and Western Australia, likely due to the advanced age of the cattle being sampled (6-36 months of age). No C. bovis or C. ry

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6

Bouchard, Alexandra Karine. "The contribution of genetic parameters to the profitability of Canadian Holstein cows." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape16/PQDD_0003/MQ37096.pdf.

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7

Gollapudi, Anantha Srinivasa Babu. "Molecular variants of bovine GH and GHR and their association with milk production traits in Canadian Holstein bulls." Thesis, McGill University, 2001. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=32996.

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In dairy cattle, treatment with exogenous growth hormone (GH) affects growth and function of mammary gland. The actions of GH are mediated via interaction with GH receptors (GHR). The first step in signal transduction is homodimerization of two GHR molecules by GH. This step is critical since mutation in either GH or GHR can block dimerization and thus target cell activation. However, association between milk related traits and combination of GH and GHR variations are not known. Accordingly, DNA genotypes in the GH and GHR genes were investigated for association with milk, fat and protein lact

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8

McCann, Melissa Catherine. "Manipulating Cattle and Deer Foraging Behaviors for the Consumption of Leafy Spurge and Canada Thistle." Thesis, North Dakota State University, 2015. https://hdl.handle.net/10365/27824.

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This study tested targeted grazing weeds with cattle and white-tailed deer (Odocoileus virginianus). Using forage manipulation techniques, we attempted to encourage cattle and white-tailed deer to graze weeds. Cattle were encouraged to target graze leafy spurge (Euphorbia esula L.). We established that cattle will attempt to consume leafy spurge from feed bunks but not from pasture. Two projects were developed to test targeted grazing of Canada thistle (Cirsium arvense) by white-tailed deer. The first project was a behavior study using a rationed pelleted feed with Canada thistle. The second a

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9

Jairath, Lalit Kumar. "Genetic and phenotypic parameters of lifetime performance traits in Canadian Holsteins." Thesis, McGill University, 1992. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=39424.

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Estimates of genetic and phenotypic parameters of lifetime performance traits and estimates of correlations between these and first lactation traits were obtained using multitrait mixed model and Restricted Maximum Likelihood (REML) methodologies, and accounting for all known additive genetic relationships amongst animals in sires pedigree. Part-lifetime performance traits, i.e. two-, three, and four-parity totals of yield and profit, were also included in the analysis. Data were on 82,835 Holstein cows, daughters of 703 sires, calving first between September 1979 and December 1984 in the herd

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10

Téno, Gabriel. "The cost-benefit analysis of extending the grazing season in beef cattle production in Atlantic Canada." Mémoire, Université de Sherbrooke, 2016. http://hdl.handle.net/11143/9902.

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The aim of the study was to integrate economics, forage agronomy and livestock production data to determine the economic costs and benefits of management techniques that can extend the grazing season for beef production in Atlantic Canada. The results of the study show that extending the grazing season is financially and economically beneficial for both an Atlantic beef farmer and the whole Atlantic community. Extending the grazing season could be thus an alternative solution to enhance beef farm viability in Atlantic Canada. It can also contribute to the sustainable development of beef cattle

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11

Archer, Alfred Ainsley. "A framework to integrate and analyse industry-wide information for on-farm decision making in dairy cattle breeding /." Thesis, McGill University, 2000. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=36749.

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The goal of this thesis was to develop a framework that could integrate and analyse industry-wide information for the support of on-farm decision-making in dairy-cattle breeding. Specific objectives included (i) describing a dairy breeding information system (DBIS); (ii) examining how the Internet could be exploited to improve the DBIS and its functioning; (iii) describing a process for implementing a unified data model to facilitate integrated user access to information in the DBIS; and (iv) developing software to support decision-making by facilitating access to a unified data model when imp

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12

Ralston, Brenda. "A comparative study of giardia and cryptosporidium infections in feedlot cattle in Western Australia and Alberta, Canada." Thesis, Ralston, Brenda (2009) A comparative study of giardia and cryptosporidium infections in feedlot cattle in Western Australia and Alberta, Canada. PhD thesis, Murdoch University, 2009. https://researchrepository.murdoch.edu.au/id/eprint/1668/.

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A comparative study of the parasites Cryptosporidium andersoni and Giardia duodenalis in feedlot cattle in Western Australia (n=502) and Alberta, Canada (n=852) was conducted. The objectives were to determine the prevalence, infection patterns and impact on cattle performance of these protozoan parasites. Utilizing molecular tools G. duodenalis was genotyped and C. andersoni samples were confirmed positive. C. parvum was absent from all cattle sampled in Alberta, Canada and Western Australia, likely due to the advanced age of the cattle being sampled (6-36 months of age). No C. bovis or C.

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13

Ralston, Brenda. "A comparative study of giardia and cryptosporidium infections in feedlot cattle in Western Australia and Alberta, Canada." Ralston, Brenda (2009) A comparative study of giardia and cryptosporidium infections in feedlot cattle in Western Australia and Alberta, Canada. PhD thesis, Murdoch University, 2009. http://researchrepository.murdoch.edu.au/1668/.

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A comparative study of the parasites Cryptosporidium andersoni and Giardia duodenalis in feedlot cattle in Western Australia (n=502) and Alberta, Canada (n=852) was conducted. The objectives were to determine the prevalence, infection patterns and impact on cattle performance of these protozoan parasites. Utilizing molecular tools G. duodenalis was genotyped and C. andersoni samples were confirmed positive. C. parvum was absent from all cattle sampled in Alberta, Canada and Western Australia, likely due to the advanced age of the cattle being sampled (6-36 months of age). No C. bovis or C.

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14

Hird, Wendy Louise. "The effect of milk pricing on genetic selection goals in British Columbia and Quebec dairy cattle populations." Thesis, University of British Columbia, 1985. http://hdl.handle.net/2429/24683.

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This study has compared the effect of milk pricing systems on the selection goals of dairy producers in two provinces of Canada, British Columbia (BC), and Quebec. These provinces were chosen for comparison as BC produces milk largely for a fluid market, while Quebec produces milk for a manufacturing market. Within BC, due to a higher utilization and higher milk price, the value/kg of skim on Vancouver Island was higher than that of the Vancouver Lower Mainland over the study period 1963-1982. Between the two provinces, the value/kg of skim in BC was found to be consistently higher than in Que

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15

Coklin, Tatjana. "Detection and molecular characterization of Giardia and Cryptosporidium in Canadian dairy cattle." Thesis, University of Ottawa (Canada), 2007. http://hdl.handle.net/10393/27823.

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Giardia and Cryptosporidium are intestinal protozoan parasites that infect a wide range of host species, including humans. DNA sequencing of Giardia and Cryptosporidium isolates from human and animal sources has identified numerous species and genotypes, and has demonstrated that a number of Giardia and Cryptosporidium genotypes are shared between animals and humans. Therefore, livestock may act as a source of contamination of the food and water supply. The goal of this study was to optimize methods for the detection and molecular characterization of Giardia and Cryptosporidium. Achieving thi

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16

Klassen, David John. "Estimation of repeatability of calving ease in Canadian Holsteins." Thesis, McGill University, 1987. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=61705.

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17

Grant, Brenna Beth. "US and Canadian cattle markets: integration, the law of one price, and impacts from increased Canadian slaughter capacity." Thesis, Montana State University, 2007. http://etd.lib.montana.edu/etd/2007/grant/GrantB0507.pdf.

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The objectives of this study are to econometrically determine if the US and Canadian fed steer, feeder steer, and slaughter cow markets were integrated from 1985 to 2006. The law of one price was tested for individually defined policy regimes. Price transmission and exchange rate pass-through are tested in each regime to determine the degree of market integration for each cattle market. Regimes are tested for changes in market structure to determine if the policy change had been significant. The increase in Canadian slaughter capacity is then quantified on cattle prices in Canada and the US. A

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18

Munroe, Fonda A. "The epidemiology of Mycobacterium bovis in Canadian cattle and cervidae between 1985-1994." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ30060.pdf.

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19

Moro-Méndez, José. "Associations between genetic markers and mastitis resistance in Canadian Holsteins." Thesis, McGill University, 2005. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=85943.

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The objective of this thesis was to test for associations between genetic polymorphisms of genes related to immune response (growth hormone (GH), growth hormone receptor (GHR), ornithine decarboxylase (ODC), insuline-like growth factor-1 (IGF-1), adrenocorticotropin hormone (ACTH), corticotrophin releasing hormone (CRH), and prolactin (PRL)) and mastitis resistance traits (incidence of clinical mastitis (ICM), occurrence of clinical mastitis (OCM), culling due to mastitis (CDM), and somatic cell scores (SCS)) in Canadian Holsteins.<br>Using lactation records of cows enrolled in milking

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20

Ongaro, Gian Luigi <1988&gt. "Cluster e Catene Globali del valore nell'industria del mobile. Italia, Usa e Canada a confronto." Master's Degree Thesis, Università Ca' Foscari Venezia, 2012. http://hdl.handle.net/10579/2040.

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La tesi analizza, attraverso la nozione di catena del valore aggiunto, il distretto del mobile del Livenza/Quartier del Piave. Dopo un primo capitolo concentrato nella descrizione del modello teorico delle Global Value Chain, l'elaborato presenta l’analisi del distretto del Livenza/Quartier del Piave. Viene proposta una descrizione del cluster alla luce del modello delle GVC. Nel terzo e ultimo capitolo si passa ad un confronto con il distretto di High Point in North Carolina e con l'industria del mobile canadese, evidenziando similitudini e differenze con la realtà italiana.

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21

Kgwatalala, Patrick M. 1973. "Genetic polymorphisms in the stearoyl-CoA desaturase1 (SCD1) gene and their influence on the conjugated linoleic acid (CLA) and monounsaturated fatty acids (MUFA) content of milk fat of Canadian Holstein and Jersey cows." Thesis, McGill University, 2008. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=115690.

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Stearoyl-CoA desaturase1 (SCD1) catalyzes the synthesis of conjugated linoleic acid (CLA) and mono-unsaturated fatty acids (MUFA) in the mammary gland of ruminant animals. We hypothesized that single nucleotide polymorphisms (SNPs) in the coding region, 5' and 3' untranslted regions (UTRs) of the SCD1 gene would influence the activity of SCD1 enzyme and consequently account for some within-breed variations in milk CLA and MUFA. Sequence analysis of the coding region of the SCD1 gene of Jerseys and Holsteins revealed c.702A→G, c.762T→C and c.878C→T SNPs in exon 5 in both breeds a

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22

Nadesalingam, Jeyakumary. "Mapping and detection of quantitative trait loci (QTL) for milk production traits based on linkage analysis using microsatellite markers in Canadian Holstein cattle." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape2/PQDD_0019/NQ47403.pdf.

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23

Rovira, i. Cerdà Helena. "El Valeri Màxim d’Antoni Canals: estudi i edició (llibres I-V)." Doctoral thesis, Universitat de Barcelona, 2014. http://hdl.handle.net/10803/283115.

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Aquesta tesi doctoral conté l’única edició crítica fins ara realitzada dels llibres I-V del Valeri Màxim d’Antoni Canals, això és la traducció catalana dels Dictorum factorumque memorabilium de Valeri Màxim, que el dominic valencià ja tenia enllestida en 1395. La nostra edició té en compte els nou testimonis, tots ells manuscrits, que transmeten l’obra íntegrament o en la seva major part. A banda d’aquests còdexs, hi ha una altra còpia de la qual només s’han conservat sis folis, amb fragments del novè llibre. L’edició inclou un aparat de variants en el qual es reflecteixen les lliçons bandejad

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Loly, Christopher M. "The rise and fall of the cattle train in Canada." 1995. http://hdl.handle.net/1993/12191.

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Holzaepfel, Todd David. "British influences on the American and Canadian West Capital, cattle and clubs, 1870-1910 /." 2009. http://hdl.handle.net/10106/2049.

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26

DeJong, Alex. "ECONOMIC ANALYSIS OF THE REGIONAL EFFECTS OF GRAIN-BASED ETHANOL PRODUCTION ON THE COMPETITIVENESS OF FED CATTLE PRODUCERS IN EASTERN AND WESTERN CANADA." Thesis, 2011. http://hdl.handle.net/10214/3018.

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This thesis investigates the regional impacts that increased grain based ethanol production has the competitiveness of fed cattle producers in Eastern and Western Canada. A simulation model solves for the price of feed grains in Eastern and Western Canada and the United States. Fed Cattle Producer Surplus values are calculated as a baseline by which scenario results are compared. Two scenarios are tested by the model, both applying increased ethanol production to the 2002 base year. Results show that 2008 ethanol production increases the price for feed grains in all three regions of the mod

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Zaffino, Jessica. "An evaluation of hock, knee, and neck injuries on dairy cattle in Canada." Thesis, 2012. http://hdl.handle.net/10214/3917.

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This thesis is an investigation of the prevalence of, and factors associated with, hock, knee, and neck injuries on dairy cattle in Canada. Tie-stall (n = 100) and free-stall farms (n = 90) were visited in Quebec, Ontario, and Alberta, Canada. Cows were scored for hock (tarsus), knee (carpus), and neck injuries on a 3 or 4-point scale combining the attributes of hair loss, broken skin, and swelling. Animal-based and environmental measures were taken which were hypothesized to be risk factors for injury. On tie-stall farms the mean herd-level prevalence of hock, knee, and neck injuries was 56,

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Wlasichuk, Cynthia. "The impacts of cattle grazing on stream ecosystems in Grasslands National Park of Canada, Saskatchewan." 2014. http://hdl.handle.net/1993/23873.

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Cattle are responsible for the deterioration of aquatic and riparian ecosystems throughout the North American prairies. Marked preference for riparian areas has resulted in vegetation loss, stream bank destabilization, changes in sediment particle size, and increased nutrient loads in the streams. A grazing experiment in Grasslands National Park of Canada manipulated the density of cattle to represent a range of grazing intensities (from no grazing to very heavy grazing, 70% forage utilization). This experiment provided the opportunity to study how streams in the semi-arid mixed-grass prairie

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Dietz, Mark Colton. "Comparison of host-, herd-, and environmental-factors associated with serpositivity to neospora caninum among adult beef and dairy cattle in alberta." 2008. http://hdl.handle.net/1969.1/ETD-TAMU-3168.

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This study represents an analysis of serological and risk factor data collected previously in Alberta, Canada, involving neosporosis in beef and dairy cattle. The causative agent of neosporosis, Neospora caninum (NC), is a single-celled, apicomplexan protozoan parasite in which domesticated dogs have been identified as the definitive host. The primary economic impact involves beef and dairy cattle due to associated abortions and neonatal mortality. The data used in this study were collected for cattle in both dairy and beef herds in an identical manner permitting a direct comparison of host-,

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Lusk, Jennifer. "The effects of grazing on songbird nesting success in Grasslands National Park of Canada." 2009. http://hdl.handle.net/1993/3178.

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I examined the effects of nest site vegetation structure and cattle grazing on songbird nesting success in native mixed-grass prairie in Grasslands National Park of Canada and Mankota Community Pastures in southwestern Saskatchewan. This is the first study to compare songbird nesting success in season-long grazed and ungrazed native mixed-grass prairie. Sprague’s pipit, Baird’s sparrow, vesper sparrow, lark bunting, and chestnut-collared longspur all selected for denser vegetation at the nest than was generally available. Sprague’s pipit daily nest survival declined with increased vegetation

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Crispi, Kathleen Adele Thompson. "Genetic Regulation of Immune Responses in Holstein Dairy Cows across Canada." Thesis, 2012. http://hdl.handle.net/10214/3915.

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Diseases that affect dairy cattle have serious economic and animal welfare implications. The inclusion of immune response (IR) traits in breeding indices has been suggested to improve inherent animal health, and decrease the use of antimicrobials. The objectives of this research were to (1) evaluate cell-mediated (CMIR) and antibody-mediated immune responses (AMIR) on 680 Holstein cows from 58 herds across Canada, (2) estimate genetic parameters of these traits (3) examine the associations with routinely evaluated traits as well as the incidence of mastitis, (4) evaluate the correlation of nat

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Flint, Hannah. "Load characteristics and the behaviour of beef cattle unloaded for feed, water and rest during long distance transportation in Canada." Thesis, 2013. http://hdl.handle.net/10214/7481.

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This thesis is an investigation of the characteristics and behaviour of loads of cattle that are unloaded for feed, water and rest at a rest station in Thunder Bay, Ontario. Truck drivers were surveyed as they arrived at the rest station and the cattle were observed as they were unloaded and reloaded to score animal handling (n=129). Behavioural observations were conducted on an additional 53 loads (87 pens) using counts of the number of animals lying, feeding and drinking. A majority of the loads (60.94%) were feeder calves (300-550kg). On average drivers were in transit for 28.2±5.0 hours be

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Kehler, Carollyne. "A western Canadian study of the effect of winter transport conditions including acceleration on animal outcomes in cattle." 2015. http://hdl.handle.net/1993/30749.

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The intent of this study was to monitor the effect of Canadian winter commercial transport conditions on animal outcomes. A methodology was developed to measure acceleration on trailers transporting cull cows and a preliminary comparison of acceleration and carcass bruising revealed that further study of the relationship was warranted. The accelerometer methodology was used as one tool to examine factors influencing internal trailer microclimate and trailer acceleration on shrink, and severe bruising in finished cattle. This research has improved our understanding of Canadian winter transport

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Moroziuk, Coreen A. "An analysis of Canadian fed cattle basis." 1992. http://hdl.handle.net/1993/17467.

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Weller, Denise. "Associations between Canadian Holstein Dairy Cattle Health and Production Traits." Thesis, 2012. http://hdl.handle.net/10214/5204.

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A multiple trait, random regression, test day (TD) model was used to determine the heritability and genetic correlations of milk, fat, protein, and SCS with metritis, cystic ovary disease, mastitis, lameness, ketosis, milk fever, and displaced abomasum for four periods in lactations 1, 2, and 3-5 using two disease definitions. Definition 1 assumed that the first disease occurrence affects all TD thereafter equally and definition 2 assumed that disease affects only the next TD. Results were similar between definitions. The models were modified to allow the estimation of differences in disease o

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"Epidemiology of toe tip necrosis syndrome in western Canadian feedlot cattle." Thesis, 2014. http://hdl.handle.net/10388/ETD-2014-09-1779.

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Lameness continues to cause significant problems in profitability, productivity, and animal welfare in the feedlot industry. Toe tip necrosis syndrome (TTNS) is a new name for a previously reported condition. By definition, TTNS is separation of the apical white line with tissue necrosis and clinical lameness. This definition includes complications such as pedal (P3) osteitis, middle (P2) and proximal (P1) phalangeal osteomyelitis, tendonitis, tenosynovitis, cellulitis, and embolic pneumonia. Anecdotal experiences from practitioners report this lameness in feedlot cattle will develop within we

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Grant, Brenna Beth. "U.S. and Canadian cattle markets integration, the law of one price, and impacts from increased Canadian slaughter capacity /." 2007. http://etd.lib.montana.edu/etd/2007/grant/GrantB0507.pdf.

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38

Rasali, Drona Prakash. "Genetic analysis of association among juvenile growth and female reproductive traits in Canadian Angus cattle." 2004. http://hdl.handle.net/1993/15738.

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39

Bouchard, Kristen. "Methane emissions and rumen microbial changes in steers fed condensed tannin containing diets under western Canadian conditions." 2011. http://hdl.handle.net/1993/4779.

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A study was conducted to determine if sainfoin, a condensed tannin (CT) containing legume, fed to beef cattle as hay or silage during a western Canadian winter would result in a reduction in methane (CH4) emissions without compromising animal performance. Forty yearling beef steers were fed four diets in a factorial design consisting of two legume forage species (sainfoin or alfalfa) and two preservation methods (silage or hay) over 15 weeks (wks). For each sample wk, animal weight, 24-h CH4 expiration and rumen fluid samples were obtained. Rumen methanogens were characterized using terminal

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"Thickwood." Thesis, 2015. http://hdl.handle.net/10388/ETD-2015-09-2223.

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My thesis is a novel-length work of historical fiction entitled Thickwood. The novel can be situated within the context of great/interior plains literature, given its substantial focus on the Thickwood Hills, the northern remnant of the Missouri Coteau. This transition zone between the plains and the mixed boreal forest is an area of geographical and cultural tension. Within this drainage system of the Saskatchewan Rivers, Europeans traded for food and furs with First Nations and Métis peoples, leading to the signing of Treaty 6 and the formation of First Nations Reserves. In Thickwood charact

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