Alexander, Trevor, Ph.D.

Research Scientist


Contact Information:

5403 1st Avenue South
Lethbridge, Alberta T1J 4B1
Telephone: 403-317-2158
Fax: 403-382-3156
Email: trevor.alexander@agr.gc.ca

Areas of Expertise:

  • Beef physiology
  • Ruminant health
  • Bovine respiratory disease
  • Pathogen transmission and control strategies
  • Environmental microbiology
  • Rumen microbiology
  • Antibiotic resistance

Current Projects:

  • Elucidating factors involved in onset and outcome of bovine respiratory disease, including innate immunity, nutrition, pathogen virulence, and host commensal bacteria
  • Applying reverse vaccinology to identify novel antigens for vaccine development against Mannheimia haemolytica
  • Epidemiology and molecular characterization of bovine pathogens and antibiotic resistance

Research Publications:

The links below lead to abstracts with access to full text.

2016

2015

2014

2013

2012

2011

2010

2009

Other Science Related Publications:

2015

  • Hao, X., Larney, F.J., Ellert, B.H., Alexander, T.W., and McAllister, T.A. (2015). "Co-composting cattle feedlot manure with construction and demolition waste.", International Compost Conference, Beijing, China, November 22-25, 2015. (Abstract)
  • McAllister, T.A., Aslam, M., Bach, S.J., Alexander, T.W., Stanich, K., and McGinn, S.M. (2015). Defining the contribution of super-shedders to high event days in commercial abattoirs and contamination of the environment with Escherichia coli O157:H7. Research Project Annual Report. AAFC Project ID J-000119. (Report)
  • Reich, J., Chatterton, S., and Alexander, T.W. (2015). "Development of a multiplex qPCR TaqMan assay for the quantification of airborne spores of Botrytis cinerea and Sclerotinia sclerotiorum.", Botany 2015, Shaw Convention Center, Edmonton, Alberta, Canada, July 25-29, 2015. (Abstract)

2014

  • Alexander, T.W., McAllister, T.A., Stanford, K.I.M., Reuter, T.R., and Topp, E. (2014). "Characterization of Shiga toxin-producing Escherichia coli isolated from feces of cattle in commercial feedlots.", ADSA-ASAS 2014 Joint Annual Meeting, Kansas City, MO, USA, July 20-24, 2014.
  • Hao, X., Hill, B.D., Caffyn, P.R., Travis, G.R., Olsen, P.A., Larney, F.J., McAllister, T.A., and Alexander, T.W. (2014). "Co-composting of beef cattle feedlot manure with construction and demolition waste.", 51st Annual Alberta Soil Science Workshop, Calgary, AB, Canada, February 12-14, 2014. (Abstract)
  • Hao, X., Hill, B.D., Caffyn, P.R., Travis, G.R., Olson, A.F., Larney, F.J., McAllister, T.A., and Alexander, T.W. (2014). "Co-composting of beef cattle feedlot manure with housing construction waste for value-added organic fertilizer.", 51st Annual Alberta Soil Science Workshop, Calgary, AB, Canada, February 12-14, 2014, pp. 30. (Abstract)
  • Hao, X., Larney, F.J., Alexander, T.W., and McAllister, T.A. (2014). "Co-composting beef cattle feedlot manure with construction & demolition (C&D) waste.", ASA, CSSA and SSSA International Annual Meeting 2014, Long Beach, CA, USA, November 2-5, 2014, Oral presentation. (Abstract)
  • Jin, L., Li, C., He, M.L., Wang, Y., Alexander, T.W., and McAllister, T.A. (2014). "Effects of echium and flaxseed oil on ruminal fatty acid metabolism in vitro.", ADSA-ASAS 2014 Joint Annual Meeting, Kansas City, MO, USA, July 20-24, 2014.
  • McAllister, T.A., Aslam, M., Bach, S.J., Alexander, T.W., Stanich, K., and McGinn, S.M. (2014). Defining the contribution of super-shedders to high event days in commercial abattoirs and contamination of the environment with Escherichia coli O157:H7. Research Project Annual Report. AAFC Project ID J-000119. (Report)

2013

  • Alexander, T.W. (2013). "Antimicrobial use and livestock production.", Pacific NorthWest Economic Region annual summit, Anchorage, Alaska, USA, July 14-18, 2013. (Presentation)
  • Alexander, T.W. (2013). "DNA extraction and PCR methods.", CSAS-CMSA Joint Annual Meeting, Banff Park Lodge Resort Hotel and Conference Centre, Banff, AB, Canada, June 18-20, 2013.
  • Jin, L., He, M.L., Wang, Y., Alexander, T.W., Kraft, J., Li, C., Zhang, Y.G., and McAllister, T.A. (2013). "In vitro effects of echium oil and flaxseed oil on major rumen bacterial populations.", CSAS-CMSA Joint Annual Meeting, Banff Park Lodge Resort Hotel and Conference Centre, Banff, AB, Canada, June 18-20, 2013, P48, pp. 45. (Poster)
  • Klima, C.L., Zaheer, R., Hendrick, S., Alexander, T.W., and McAllister, T.A. (2013). "Agents of Bovine Respiratory Disease in North American Feedlots.", CSAS-CMSA Joint Annual Meeting, Banff Park Lodge Resort Hotel and Conference Centre, Banff, AB, Canada, June 18-20, 2013, O13-GS, pp. 8.
  • Subramanian, S., McAllister, T.A., Baah, J., and Alexander, T.W. (2013). "Analysis of probiotic bacteria to inhibit the respiratory pathogen Mannheimia haemolytica and adhere to bovine bronchial epithelial cells in vitro.", CSAS-CMSA Joint Annual Meeting, Banff Park Lodge Resort Hotel and Conference Centre, Banff, AB, Canada, June 18-20, 2013, P57, pp. 49. (Poster)

2012

  • Alexander, T.W. and McAllister, T.A. (2012). "Manipulating the ruminant microbiota to improve production.", 48th Annual Eastern Nutrition Conference of the Animal Nutrition Association of Canada (ANAC), Kitchener, ON, Canada, May 9-10, 2012.
  • Alexander, T.W. and McAllister, T.A. (2012). "Manipulating the ruminant microbiota to improve production.", DSM Pharmaceuticals Confernence: Probiotics, Rheinfelden, Switzerland, 1-2 February, 2012. (Presentation)
  • Alexander, T.W., Wright, A.-D.G., and McAllister, T.A. (2012). "Comparison of the Bacterial Microbiota in Nasopharyngeal Samples from Cattle Treated for Bovine Respiratory Disease and Cattle with no History of Disease.", 112th General Meeting of American Society for Microbiology, San Francisco, CA, USA, June 15-19, 2012.

2011

  • Klima, C.L., McAllister, T.A., Hendrick, S., and Alexander, T.W. (2011). "Antimicrobial susceptibility and genetic characterization of Mannheimia haemolytica isolates from the nasopharynx of feedlot cattle in western Canada.", Antimicrobial stewardship in Canadian agriculture and veterinary medicine conference: How is Canada doing and what still needs to be done?, Toronto Airport, Toronto, ON, Canada, October 30-November 2, 2011.
  • McAllister, T.A., Alexander, T.W., Cook, S.R., Yanke, L.J., and Zaheer, R. (2011). "Molecular Ecology of Antimicrobial Resistance in the Feedlot.", Antimicrobial Stewardship in Canadian Agriculture and Veterinary Medicine: How is Canada doing and what still needs to be done?, Toronto Airport, Toronto, ON, Canada, October 30- November 2, 2011.
  • Reuter, T.R., Alexander, T.W., and McAllister, T.A. (2011). "Detection of genetically modified feed and food.", in Fink-Gremmels, J. (ed.) - Animal Feed Contamination: Effects on Livestock and Food Safety, Woodhead Publishing, Cambridge, UK.
  • Wu, R.-B., Alexander, T.W., Li, J.-Q., Munns, K., Sharma, R., and McAllister, T.A. (2011). "Characterization of class 1 integrons and resistance genes in antimicrobial-resistant Escherichia coli in beef cattle.", Antimicrobial stewardship in Canadian agriculture and veterinary medicine conference: How is Canada doing and what still needs to be done?, Toronto Airport, Toronto, ON, Canada, October 30-November 2, 2011.
  • Zaheer, R., Cook, S.R., Klima, C.L., Read, R.R., Alexander, T.W., and McAllister, T.A. (2011). "Characterization of Mannheimia haemolytica and other erythromycin resistant nasopharyngeal microbes from macrolide-treated feedlot cattle.", Antimicrobial stewardship in Canadian agriculture and veterinary medicine conference: How is Canada doing and what still needs to be done?, Toronto Airport, Toronto, ON, Canada, October 30-November 2, 2011.

2010

  • Alexander, T.W., Stanford, K.I.M., and McAllister, T.A. (2010). "On-farm mitigation of enteric pathogens to prevent human disease.", in Krause, D. and Hendrick, S. (eds.) - Zoonotic Pathogens in the Food Chain, CABI Publishing, Chapter 7, pp. 140-166.

2009

  • Alexander, T.W., Inglis, G.D., Yanke, L.J., Topp, E., and McAllister, T.A. (2009). "Characterization of antimicrobial-resistant Escherichia coli from samples collected throughout processing of feedlot cattle at a commercial abattoir.", ADSA-CSAS-ASAS 2009 Joint Annual Meeting, Montréal Convention Center, Montréal, QC, Canada, July 12-16, 2009. (Poster)
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