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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
31

Immuno fluorescent and ecological studies of Corynebacterium renale

Addo, Paul Benedict January 2010 (has links)
Digitized by Kansas Correctional Industries
32

Alcohol block of the distal ventral sacral nerves of the bovine species as a method of controlling rectal tenesmus

Adeyanju, John 'Bayo January 2011 (has links)
Digitized by Kansas Correctional Industries
33

Epidemiology and prophylaxis of diseases and mortality in housed dairy calves

Watt, Bruce Richard January 2011 (has links)
Photocopy of typescript. / Digitized by Kansas Correctional Industries
34

Congenital internal hydrocephalus and hydranencephaly in cattle

Axthelm, Michael K January 2011 (has links)
Photocopy of typescript. / Digitized by Kansas Correctional Industries
35

Proliferation and apoptosis of bovine mammary epithelial cells : roles of eukaryotic translation initiation factor 4E and Escherichia coli mastitis

Long, Ezhou. January 2001 (has links)
No description available.
36

Grass tetany of cattle in New South Wales

Elliott, Malcolm Gordon, University of Western Sydney, Hawkesbury, Faculty of Environmental Management and Agriculture January 2000 (has links)
Over the last 60 years, grass tetany has been recognised as a significant lethal condition in sheep and cattle.Outcomes from this study include documentation of the likely precursors to grass tetany, ways to recognise these precursors, and long term practices that will enable producers to minimise livestock deaths. The benefit of this research to beef producers is that the environmental circumstances thought to be associated with outbreaks of grass tetany have been identified, along with remedial action that can be taken to prevent deaths occurring.Recommendations to industry on best practice to be adopted by leading producers to minimise outbreaks of grass tetany are made.This study provides an alternate strategy for the management of grass tetany in beef cattle, to the more clinical approaches previously recommended. It is suggested that losses from this economically important metabolic disease can be minimised if management practices of beef cattle producers in eastern Australia can incorporate a more holistic approach to farm management, which takes account of the soil/plant/animal/climate inter-relationships. / Master of Science (Hons)
37

THE ECOLOGY AND ECONOMIC EFFECTS OF CATTLE GRUB (HYPODERMA SP.) INFESTATIONS IN NATIVE ARIZONA RANGE CATTLE

Collins, Richard C., 1941- January 1970 (has links)
No description available.
38

Proliferation and apoptosis of bovine mammary epithelial cells : roles of eukaryotic translation initiation factor 4E and Escherichia coli mastitis

Long, Ezhou. January 2001 (has links)
Milk yield is dependent on both the number and secretory activity of mammary alveolar cells. The number of cells is controlled by their proliferation and death. In the first study, the effect of eukaryotic translation initiation factor 4E (eIF-4E) on the growth of a bovine mammary epithelial cell line, MAC-T, was investigated. Compared to the parental controls, overexpression of mouse wild-type (wt) eIF-4E in 11A, a subclone of MAC-T cells, increased the growth rate and saturation density (number of cells per well at confluence), whereas overexpression of a mutant eIF-4E (W56A) decreased growth rates and saturation densities. Furthermore, cyclin D1 expression among the 4E-overexpressing and parental cells was compared. Compared to the controls, the amounts of cyclin D1 mRNA and proteins were higher in the cells overexpressing wt eIF-4E but lower in the cells with mutant eIF-4E expression. Our results suggest that altered expression of eIF-4E leads to changes in cyclin D1 expression, which consequently modulate the growth properties of MAC-T 11A cells. / Because of its unknown sequence, bovine eIF-4E cDNA was then cloned in the second study. Its coding region consists of 651 nucleotides which encode 217 amino acids (AAs). Bovine eIF-4E cDNA shares 94%, 89% and 94% homology with those of human, mouse and rabbit, respectively. Differences in protein sequences between bovine and human, mouse and rabbit eIF-4E are 2, 4, and 3 AAs, respectively. Furthermore, expression of eIF-4E in bovine mammary tissues at different physiological periods was investigated by Northern blot analysis, using the cloned cDNA as the probe. eIF-4E was not detectable at prepubertal period and expressed at a very low level at the third estrous cycle. In the lactating mammary tissues, eIF-4E was highly expressed. Differential expression of eIF-4E in bovine mammary gland at distinct physiological stages indicates its potential involvement in mammary development. / Cell proliferation and apoptosis were also studied in the Escherichia coli (E. coli)-infected bovine mammary glands in the last study. Both proliferation and apoptosis increased in the mastitic tissue, as determined by immunohistological assays. Compared to the controls, expression of the pro-apoptotic proteins, Bax and interleukin-1beta converting enzyme (ICE), increased at 24 h and 72 h post-infection, whereas expression of the anti-apoptotic protein Bcl-2 decreased only at 24 h post-infusion. Induction of extracellular matrix (ECM)-degrading enzymes, including matrix metal loproteinase-9 (MMP-9), stromelysin-1 (SL-1) and urokinase-type plasminogen activator (uPA), was also observed in the mastitic tissue. Therefore, apoptosis may be mediated through pathways involving the actions of Bcl-2, Bax and ICE, and may partially be accounted by ECM breakdown. / Taken together, our study has demonstrated the effect of eIF-4E on bovine mammary cell proliferation. In addition, its involvement in bovine mammary gland development has been suggested. Finally, increased mammary cell apoptosis and proliferation during E. coli-induced mastitis has been revealed, in association with altered expression of apoptosis-related genes and ECM-degrading enzymes. Understanding the regulation of mammary cell proliferation and death may eventually lead to improvement of milk production.
39

Development of marker vaccines for rinderpest (RPV) and peste des petits ruminants (PPRV) viruses

Buczkowski, Hubert January 2010 (has links)
No description available.
40

Characterization of the interaction between Mycobacterium avium subsp. paratuberculosis and bovine epithelial cells in culture and identification of invasion-associated genes by transposon mutagenesis

Patel, Dilip 29 December 2004 (has links)
Graduation date: 2005

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