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Dissertations / Theses on the topic 'Dairy cattle'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

McMillan, Allison. "Dairy cattle grouping /." Click here to view, 2009. http://digitalcommons.calpoly.edu/dscisp/7.

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Thesis (B.S.)--California Polytechnic State University, 2009.<br>Project advisor: Edwin Jaster. Title from PDF title page; viewed on Jan. 21, 2010. Includes bibliographical references. Also available on microfiche.

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2

Roxström, Anki. "Genetic aspects of fertility and longevity in dairy cattle /." Uppsala : Swedish Univ. of Agricultural Sciences (Sveriges lantbruksuniv.), 2001. http://epsilon.slu.se/avh/2001/91-576-5812-9.pdf.

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3

Wang, Wei. "Plasminogen polymorphism in dairy cattle." Thesis, McGill University, 1994. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=26174.

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A genetic approach to lowering protease (plasmin) levels in milk, requires the presence of polymorphism of bovine plasminogen. This study was conducted to determine to what extent genetic polymorphism exists in dairy cattle. Bovine plasminogen was first purified from Holstein cow plasma by affinity chromatography on Lysine-Sepharose and antibodies to bovine plasminogen were raised by monthly intramuscular injection of the isolated bovine plasminogen into rabbits. For plasminogen phenotyping, blood samples were collected at random from 50 Holstein and Ayrshire cattle, and plasminogen was isolat

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4

Tortosa, Christina Suzanne. "Reproductive diseases of dairy cattle /." Click here to view, 2009. http://digitalcommons.calpoly.edu/dscisp/6.

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Thesis (B.S.)--California Polytechnic State University, 2009.<br>Project advisor: Edwin Jaster. Title from PDF title page; viewed on Jan. 21, 2010. Includes bibliographical references. Also available on microfiche.

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5

Morton, John. "Determinants of reproductive performance of dairy cows in commercial herds in Australia /." Connect to thesis, 2004. http://eprints.unimelb.edu.au/archive/00000608.

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6

Puntenney, Steven B. "The effect of prepartum anionic diets on cortisol, adiponectin, and tumour necrosis factor-[alpha] expression at varying levels of body mass index in preparturient dairy cows : implications for insulin resistance /." Connect to this title online, 2006. http://hdl.handle.net/1957/1931.

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7

Olori, Victor Enishede. "Utilisation of daily milk records in genetic evaluation of dairy cattle." Thesis, University of Edinburgh, 1997. http://hdl.handle.net/1842/12729.

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The aim of this study was to determine how daily yield records might be used to improve the genetic evaluation of dairy cattle, which is currently based on 305-day yield predicted from monthly test day records. Daily milk yield records of 488 first lactation Holstein Friesian cows were obtained from one UK herd and summarised into weekly averages. Weekly fat, protein and lactose content records, from the same herd, were also obtained and each multiplied by test day yield to estimate fat, protein and lactose yields. Analysis of variance indicated that residual standard deviation (RSD) for each

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8

Pong-Wong, Ricardo. "Milk protein polymorphisms in dairy cattle." Thesis, University of Edinburgh, 1996. http://hdl.handle.net/1842/11270.

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This study covered two main areas of major genes affecting quantitative traits: (i) the estimation of their effects with emphasis on the milk protein loci and (ii) the use of genotype information on major genes as part of the selection criteria. In a situation in which only a subset of the population has known genotypes for a major gene, the estimated effects of this gene obtained with a method using performance information on all the individuals (with and without known genotype) were compared with those estimates obtained with a method using information on only individuals with known genotype

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9

Dhaliwal, G. S. "Leptospirosis and subfertility in dairy cattle." Thesis, University of Liverpool, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.240458.

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10

Meyer, Joseph Patrick. "Evaluation of estrus synchronization protocols for first and second insemination in dairy cows and heifers /." free to MU campus, to others for purchase, 2004. http://wwwlib.umi.com/cr/mo/fullcit?p1426088.

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11

Fitzgerald, Tracey. "The effect of long-term supplementation with biotin on lameness, milk production and reproductive performance in pasture fed dairy cows /." [St Lucia, Qld.], 2001. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe16283.pdf.

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12

Brown, Timothy P. (Timothy Phillip). "Selection indices in retrospect for dairy cattle." Thesis, McGill University, 1989. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=59266.

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Selection differentials and selection indices in retrospect were calculated to determine the relative emphasis placed on production and type traits through bull selection. Indices in retrospect including only production traits indicated that, for Holsteins, fat yield was the trait most heavily selected for between 1978 and 1987, followed by protein percent and then milk yield. Fat percent and protein yield had negative index weights throughout the nine year period. In Ayrshires, similar weights were observed except that milk yield index weights were negative throughout the nine year period. It

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13

Margerison, Jean K. "Restricted suckling and nutrition of dairy cattle." Thesis, Bangor University, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.296323.

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14

Lambert, Helen Susan. "Identifying measures of emotion in dairy cattle." Thesis, University of Portsmouth, 2018. https://researchportal.port.ac.uk/portal/en/theses/identifying-measures-of-emotion-in-dairy-cattle(16e6b385-9877-44f3-927f-856099dad349).html.

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The following commentary discusses the six papers submitted for evaluation for the award of PhD by Publication (chapters 1-6). To give context to my contribution to the field of animal welfare science, I have also included several published reviews and extended abstracts as appendices (appendices 1- 6). The research considered in this commentary examined the potential of ear postures, eye whites, and nasal temperatures as measures of both positive and negative emotions in cattle. Three papers focussed on measuring a positive, low arousal emotional state. The paper; "Can ear postures reliably m

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15

Potts, Justin C. "Determining the water needs of dairy cattle." Thesis, Kansas State University, 2012. http://hdl.handle.net/2097/14176.

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Master of Science<br>Department of Animal Science and Industry<br>Micheal J. Brouk<br>Data obtained from 50 individual published studies recording water intake by dairy cattle were utilized in a meta-analysis to develop a prediction equation for free water intake (FWI). Studies were selected based on quantitative measurements of DMI, diet DM%, water intake (WI), and milk yield. Many of the studies determined FWI on multiple treatments resulting in 116 mean data points from the 50 studies. With the addition of Na in the meta-analysis, 40 data points were available from the studies to examine

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16

McGill, Tyler R. "Improving the Efficiency of Dairy Cattle Feeding." Thesis, Virginia Tech, 2017. http://hdl.handle.net/10919/79951.

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Biological functions that use amino acids (AA) are limited by AA supply. This concept was likened to staves in a barrel, where the shortest stave determines the barrel's ability to hold water (Mitchell and Block, 1946). Inaccuracies in models that predict nutrient supply and requirements of dairy cows result in inefficient feeding, as under-prediction of requirements results in deficiency, and over-prediction results in excess. To avoid limitations in production due to AA deficiencies, protein is fed in quantities that likely exceed requirements. Overfeeding of AA results in increased expenses

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17

Schadt, Iris. "Feed particle size reduction in dairy cattle." Thesis, Università degli Studi di Catania, 2011. http://hdl.handle.net/10761/159.

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This research was carried out at CoRFiLaC in collaboration with the CoRFiLaC research group and technical staff. The understanding of how cows chew their feed might be one fundamental previous step necessary to study if, and how feed particle size could alter efficient feeding, milk production and composition and animal health. Our main objective was to learn some rules, of how feed particle size is reduced during the ingestive mastication in dairy cattle, in order to get an idea about rumen mat consistency from diet particle size and intake. We measured lengths distributions of feed and respe

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18

NICOLAZZI, EZEQUIEL LUIS. "New trends in dairy cattle genetic evaluation." Doctoral thesis, Università Cattolica del Sacro Cuore, 2011. http://hdl.handle.net/10280/966.

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I sistemi di valutazione genetica nel mondo sono in rapido sviluppo. Attualmente, i programmi di selezione “tradizionale” basati su fenotipi e rapporti di parentela tra gli animali vengono integrati, e nel futuro potrebbero essere sostituiti, dalle informazioni molecolari. In questo periodo di transizione, questa tesi riguarda ricerche su entrambi i tipi di valutazioni: dall’accertamento sull’accuratezza degli indici genetici internazionali (tradizionali), allo studio di metodi statistici utilizzati per integrare informazioni genomiche nella selezione (selezione genomica). Tre capitoli valutan

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19

NICOLAZZI, EZEQUIEL LUIS. "New trends in dairy cattle genetic evaluation." Doctoral thesis, Università Cattolica del Sacro Cuore, 2011. http://hdl.handle.net/10280/966.

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I sistemi di valutazione genetica nel mondo sono in rapido sviluppo. Attualmente, i programmi di selezione “tradizionale” basati su fenotipi e rapporti di parentela tra gli animali vengono integrati, e nel futuro potrebbero essere sostituiti, dalle informazioni molecolari. In questo periodo di transizione, questa tesi riguarda ricerche su entrambi i tipi di valutazioni: dall’accertamento sull’accuratezza degli indici genetici internazionali (tradizionali), allo studio di metodi statistici utilizzati per integrare informazioni genomiche nella selezione (selezione genomica). Tre capitoli valutan

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20

OMODEI, ZORINI FABIO. "IMPROVEMENT OF FEED EFFICIENCY IN DAIRY CATTLE." Doctoral thesis, Università degli Studi di Milano, 2021. http://hdl.handle.net/2434/859146.

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The improvement of feed efficiency in dairy cattle has traditionally been approached through an increase in production levels. However, the effectiveness of the energy partitioning underlying the dilution of maintenance phenomenon decreases with each successive increment in production relative to body size, and therefore will lose importance in the next years. The selection of more efficient animals (i.e. animals that consume less feed to achieve a fixed production) is limited by the cost and inherent difficulty in recording individual feed intake data, which prove pivotal to improve the accur

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21

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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22

Larcombe, Michael Tinniswood. "The effects of manipulating reproduction on the productivity and profitability of dairy herds which graze pasture /." Connect to thesis, 1989. http://eprints.unimelb.edu.au/archive/00000650.

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23

Olynk, Nicole J. "Economic analyses of reproduction management strategies and technologies on U.S. dairy farms." Diss., Connect to online resource - MSU authorized users, 2008.

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Thesis (M.S.)--Michigan State University. Dept. of Agricultural, Food, and Resource Economics, 2008.<br>Title from PDF t.p. (viewed on July 28, 2009) Includes bibliographical references (p. 105-108). Also issued in print.

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24

Gotschi, Manuela. "The use of blood metabolic concentrations as indicators of the metabolic and productive status in dairy cows." Diss., Pretoria : [s.n.], 2000. http://upetd.up.ac.za/thesis/available/etd-01312008-145827.

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25

Ngo, Van Man. "Better use of local forages for dairy cattle in Vietnam : improving grasses, rice straw and protein rich forages /." Uppsala : Swedish University of Agricultural Sciences, 2001. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=009768639&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.

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26

McLachlan, Brenda Patricia. "Peri-partum diet and health in dairy cattle /." [St. Lucia, Qld.], 2004. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe18167.pdf.

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27

Olofsson, Jan. "Feed availability and its effects on intake, production and behaviour in dairy cows /." Uppsala : Swedish Univ. of Agricultural Sciences (Sveriges lantbruksuniv.), 2000. http://epsilon.slu.se/avh/2000/91-576-5752-1.pdf.

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28

Kolath, Sarah Jane. "Ovarian gene expression in heat-stressed dairy cattle /." free to MU campus, to others for purchase, 2004. http://wwwlib.umi.com/cr/mo/fullcit?p1426077.

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29

Pryce, Jennie Elizabeth. "Genetics of health and fertility in dairy cattle." Thesis, University of Edinburgh, 1997. http://hdl.handle.net/1842/23523.

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In this study genetic parameters were estimated and the importance of genotype by feeding system interactions investigated for a range of health and fertility traits in dairy cattle. Data were from the Langhill Dairy Cattle Research Centre and two UK recording schemes, one a recording scheme operated by the Scottish Livestock Services Ltd. (SLS) and the other a health and fertility recording and management system, the Dairy Information System (DAISY). Genetic parameters for 305 day yield of milk and its components, health traits (mastitis, somatic cell counts (SCC), lameness and milk fever) an

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30

Kamande, George Matiru. "Forage and concentrate protein utilization by dairy cattle." Thesis, University of British Columbia, 1988. http://hdl.handle.net/2429/27970.

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In the first part of this study, the relative in situ rumen degradabilities of some common Kenyan feedstuffs were estimated using two fistulated steers. The second part of the study attempted to manipulate rumen fermentation processes by heat treating dietary protein, and also by varying the hay particle size. The in situ dacron bag technique was used to estimate the feeding value of some common Kenyan forages. The rate and extent of dry matter (DM) and crude protein (CP) degradation in the rumen was then determined from the incubated samples. Effective DM and CP degradation was also estimate

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31

Holmberg, Mia. "Genetic dissection of functional traits in dairy cattle /." Uppsala : Dept. of Animal Breeding and Genetics, Swedish University of Agricultural Sciences, 2007. http://epsilon.slu.se/200792.pdf.

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32

Musa, Lutfi Mohamed Ahmed. "Characterization and utilization of dairy cattle in Sudan /." Berlin : Köster, 2007. http://deposit.d-nb.de/cgi-bin/dokserv?id=3030232&prov=M&dok_var=1&dok_ext=htm.

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33

Gonzalez, Esquivel Carlos Ernesto. "Evaluation of suitability in dairy cattle production systems." Thesis, Imperial College London, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.286689.

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34

Erdogan, Hidayet Metin. "An epidemiological study of listeriosis in dairy cattle." Thesis, University of Bristol, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.246248.

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35

Veerkamp, Roel Franciscus. "Genetic improvement of economic performance in dairy cattle." Thesis, University of Edinburgh, 1994. http://hdl.handle.net/1842/11503.

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The aims in this thesis were to investigate more comprehensive breeding goals in dairy cattle, to investigate the possible importance of genotype by environment interaction and to identify possible sources of genetic variation in feed utilisation. On the basis of a literature review, longevity was examined as component of the breeding goal, and four linear type traits (foot angle, udder depth, teat length and angularity) with the closest genetic association with longevity were used as index measurements. Economic values were derived for protein, fat and milk yield and for longevity using dynam

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36

Obike, Onyemauchechi Mercy. "Genetics of health and lameness in dairy cattle." Thesis, University of Edinburgh, 2009. http://hdl.handle.net/1842/4113.

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For the modern dairy cow, advances in genetics and breeding for productivity has resulted in an increasing incidence of health disorders and reduced longevity. One of the most important health problems is lameness, which has led to significant economic, production and welfare consequences. A reduction in lameness will improve the economic future of the dairy industry through increased profitability and decreased welfare-related problems. Although positive attempts have been made by researchers and the industry towards improving lameness, it has remained a persistent ailment for dairy farmers.

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37

Carlén, Emma. "Genetic evaluation of clinical mastitis in dairy cattle /." Uppsala : Dept. of Animal Breeding and Genetics, Swedish University of Agricultural Sciences, 2008. http://epsilon.slu.se/200863.pdf.

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38

Pillars, Roxanne Bee. "Control strategies for Johne's disease in dairy cattle." Diss., Connect to online resource - MSU authorized users, 2008.

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Thesis (PH.D.)--Michigan State University. Large Animal Clinical Sciences, 2008.<br>Title from PDF t.p. (viewed on Aug. 28, 2009) Includes bibliographical references (p. 260-281). Also issued in print.

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39

Jansson, Mörk Marie. "Validation of disease recordings in Swedish dairy cattle." Uppsala : Dept. of Clinical Sciences, Swedish University of Agricultural Sciences, 2009. http://epsilon.slu.se/200966.pdf.

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40

Golder, Helen Marie. "Increased understandings of ruminal acidosis in dairy cattle." Thesis, The University of Sydney, 2013. http://hdl.handle.net/2123/12176.

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ABSTRACT Ruminal acidosis remains an important and prevalent disorder of economic and welfare concern to the dairy industry worldwide. There are inconsistencies in the diagnostic techniques and definitions of ruminal acidosis and a requirement for further information on the pathogenesis of ruminal acidosis, in particular in regard to the role of feed substrates, such as starch, sugar, and protein (Chapter 1). A greater understanding of changes to the microbiome during ruminal acidosis, feed management, and the possible synergistic effects of feed additive control agents is also required (Chapt

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41

Tjondronegoro, Soedjiharti. "A study of reproductive failure in dairy cattle." Thesis, Tjondronegoro, Soedjiharti (1987) A study of reproductive failure in dairy cattle. Masters by Research thesis, Murdoch University, 1987. https://researchrepository.murdoch.edu.au/id/eprint/53179/.

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The overall objectives of this project were: (1) to study the epidemiology of reproductive failure in a number of dairy herds operating under commercial conditions, (2) to investigate whether the reproductive performance of dairy cows was affected by factors such as herd size, lactation number (age), season, month of calving or herd management and (3) to investigate a means of inducing synchronized oestrus and advancing the time of insemination in cows not observed to be in oestrus by 49 days postpartum. The reproductive performance of dairy cows in 4 dairy herds in Western Australia and t

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42

Rioja-Lang, Fiona C. "The effects of feed area design on the social behaviour of dairy cattle." Thesis, University of Edinburgh, 2009. http://hdl.handle.net/1842/3516.

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The overall objective of this thesis was to assess the effect of feed area design including feeding space availability, barrier type and stocking density, on the feeding behaviour of dairy cows. Feed intake in dairy cows is directly related to milk production, thus a good food supply is extremely important to the modern, high producing dairy cow. Intake is critical for improving milk production, health, body condition and the welfare of the animals. Feeding designs can have a major effect on behaviour and feed intake, therefore it is an important consideration when housing cattle and other liv

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43

Almeida, Rodrigo de. "Study of abnormal test-days in Quebec Holstein cows." Thesis, McGill University, 1996. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=23995.

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The influences of some environmental and genetic factors on the incidence of abnormal test-days in milk-recorded cows enrolled in the Quebec Dairy Herd Analysis Service (QDHAS) was determined in this study. Conditions Affecting Records (CAR) codes, collected monthly by QDHAS's supervisors, are possible explanation for a reduced production in the day of test. For the purpose of this study, CAR codes were used to analyze the incidence of health problems under generalized linear models methodology. Poisson and logistic regression model analyses were able to model the number of cases of abnormal t

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44

Tejomurtula, Jyothsna. "Identification of a novel importin [alpha] predominantly expressed in bovine oocytes and early embryos." Morgantown, W. Va. : [West Virginia University Libraries], 2007. https://eidr.wvu.edu/etd/documentdata.eTD?documentid=5488.

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Thesis (M.S.)--West Virginia University, 2007.<br>Title from document title page. Document formatted into pages; contains vi, 45 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 40-45).

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45

Starbuck, Gareth Robert. "Progesterone and fertility in the dairy cow." Thesis, University of Nottingham, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.324102.

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46

Lindström, Tina. "Feeding behaviour in dairy cows : motivational aspects /." Uppsala : Swedish Univ. of Agricultural Sciences (Sveriges lantbruksuniv.), 2000. http://epsilon.slu.se/avh/2000/91-576-5761-0.pdf.

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47

Nennich, Tamilee Dawn. "Characterization of manure excretion and environmental impacts of nutrient management in dairy production systems." Online access for everyone, 2004. http://www.dissertations.wsu.edu/Dissertations/Fall2004/T%5FNennich%5F112204.pdf.

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48

Tutusaus, Batlle Joan. "Clinical aspects of C. burnetii infection in dairy cattle." Doctoral thesis, Universitat de Lleida, 2014. http://hdl.handle.net/10803/146131.

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La febre Q és una zoonosis re-emergent endèmica mundialment, causada per Coxiella burnetii, un bacil Gram negatiu intracel.lular. Els remugants domèstics són el reservori principal per als humans. La infecció és principalment asimtomàtica en boví, però se l’ha relacionat amb desordres reproductius. L’objectiu d’aquesta tesis ha estat proporcionar informació per millorar el seu control a les explotacions bovines. S’han estudiat la serologia, els patrons d’excreció de C. burnetii i la seua relació amb el rendiment reproductiu de les vaques lleteres. A més, s’ha evaluat la bioseguretat d’una vacu

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49

Ventura, Beth Ann. "Understanding industry and lay perspectives on dairy cattle welfare." Thesis, University of British Columbia, 2015. http://hdl.handle.net/2429/54881.

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The welfare of dairy cattle is of rising concern in North America. This thesis explores how stakeholders relevant to dairy production—including those working within but also those external to the industry—interpret issues around dairy cattle welfare, with the aim to unearth the root of disagreements and identify common values between diverse groups. Chapter 1 begins by exploring the relevant literature and identifies important gaps. Chapters 2 and 3 describe multi-cohort focus groups of farmers, veterinarians, and other industry stakeholders. Chapter 2 investigates their interpretations of the

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50

Fatehi, Jalal. "Genetic aspects of advanced reproductive biotechnologies in dairy cattle." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape2/PQDD_0022/MQ51061.pdf.

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