Gregory Penner
Associate Professor
Animal and Poultry Science
University of Saskatchewan
Canada
Biography
Dr. Greg Penner is an Associate Professor and Centennial Enhancement Chair in Nutritional Physiology. He joined the Department of Animal and Poultry Science at the University of Saskatchewan in 2009 after obtaining his BSA (2004) and M.Sc. (2004) degrees from the same University, and his PhD from the University of Alberta (2009). His research covers forage utilization, ruminant nutrition, and regulation gut function in cattle. He has developed 2 indwelling pH measurement systems that have been adopted by the research community worldwide. Dr. Penner has a well-funded research program supporting and has trained more than 10 graduate students and postdoctoral fellows. He has published over 60 peer-reviewed papers and provided over 40 invited presentations. Greg also has an active extension program helping to communicate research results to end users and serves as the co-chair for the Saskatchewan Beef and Forage Symposium.
Research Interest
My research program focuses on the development of nutritional strategies to enhance the health and productivity of cattle. This includes fundamental research investigating gut function with an emphasis on regulatory processes involved in adaptive and recovery responses. Research techniques used within this theme include the use of Ussing chambers as an ex vivo approach and the temporarily isolated reticulo-rumen technique as an in vivo approach. Results from these studies are used within my second theme, applied research, to evaluate efficacy of nutritional management strategies to enhance productivity and health of beef cattle, dairy cattle, and sheep.
Publications
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Schurmann BL, Walpole ME, Gorka P, Ching JCH, Loewen ME, Penner GB. Short-term adaptation of the ruminal epithelium involves abrupt changes in sodium and short-chain fatty acid transport. AJP: Regulatory, Integrative and Comparative Physiology [Internet]. American Physiological Society; 2014 Jul 30;307(7):R802–R816.
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Górka P, Castillo-Lopez E, Joy F, Chibisa GE, McKinnon JJ, Penner GB. Effect of including high-lipid by-product pellets in substitution for barley grain and canola meal in finishing diets for beef cattle on ruminal fermentation and nutrient digestibility. Journal of Animal Science [Internet]. American Society of Animal Science (ASAS); 2015;93(10):4891.
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Rosser CL, Beattie AD, Block HC, McKinnon JJ, Lardner HA, Górka P, et al. Effect of maturity at harvest for whole-crop barley and oat on dry matter intake, sorting, and digestibility when fed to beef cattle. Journal of Animal Science [Internet]. American Society of Animal Science (ASAS); 2016;94(2):697.