Sustainable Beef Systems Research Group
Dr. McKinnon obtained his Bachelor of Science in Agriculture (1978) from the University of Manitoba and his M.Sc. (1986) and Ph.D. (1992) from the University of Saskatchewan. From 1978 to 1982, he worked as a Cattle Buyer for Canada Packers Inc. in Manitoba and Saskatchewan and as a Beef Specialist for Manitoba Agriculture from 1984 to 1986.
Currently Dr. McKinnon occupies the Saskatchewan Beef Industry Chair in the Department of Animal and Poultry Science at the University of Saskatchewan. This position is funded by the Saskatchewan Beef Industry and is mandated to work in the areas of extension, research and teaching. In terms of teaching, he offers courses in beef cattle management and animal nutrition to diploma and degree students and advanced ruminant nutrition to graduate students.
Dr. McKinnon works closely with industry, producer associations and government to help promote industry growth and development. These include the Saskatchewan Stock Grower¹s Association, the Saskatchewan Cattle Feeders Association, the Western Beef Development Centre, the Animal Nutrition Association of Canada and Saskatchewan Agriculture and Food. Examples of technology transfer activities involving the Beef Chair include:
- Saskatchewan Beef Symposium
- Western Canadian Feedlot Management School
- Saskatchewan Beef Industry Committee
- Western Canadian Forage & Grazing Conference
- Western Nutrition Conference
- Advisory Board Western Beef Development Centre
- Sustainable Beef Systems Group, University of Saskatchewan
In addition to the above activities, the Beef Chair works with cow-calf producers, feedlot operators, veterinarians, and feed industry personnel on their feeding and management programs and speaking at producer meetings on pertinent industry issues, the writing of extension articles and working with industry organizations.
Dr. McKinnon's research focuses on nutritional and environmental factors influencing
the growth and carcass quality of feeder cattle and the nutrition of wintering
beef cows. Areas of emphasis have included use of wet distiller's by-products
for feedlot cattle, nutritional evaluation of grain screenings for growing cattle,
use of real-time ultrasound for predicting carcass quality of breeding and finishing
cattle, the impact of the environment on performance of cattle in western Canada
and the use of high lipid feeds for growing and finishing cattle.
Graduate student training is a central focus of his research program. Current research projects involving M.Sc. or Ph.D. students include:
- Development of Barley-based Protein Pellets for the Japanese Feed Market
- Feeding Value of Dry Distiller's Grains for Feedlot Cattle
- Predicting the Nutritional Needs of Wintering Cows in Western Canada
- Use of "Synchrotron-based FTIR Microspectroscopy" as a Tool for
- Feeding Value of a "Low Lignin, High Fat Oat" for Growing and
- Milk Fever Prevention in Beef Cows A Nutritional Approach
- Limit Feeding Programs for Backgrounding Cattle
- Optimizing the Flow of Microbial Protein to the Small Intestine of Ruminants Fed Canola-based Diets
Recent Research Publications
(Graduate Students & Post-Doc's in bold)
- A. D. Friedt, T. A. McAllister, M. L. He, G. B. Penner, and J. J. McKinnon. 2014. Effects of Replacing Barley Grain with Graded Levels of Wheat Bran on Rumen Fermentation, Voluntary Intake and Nutrient Digestion in Beef Cattle. Can. J. Anim. Sci. (Accepted)
- S. Amat, J.J. McKinnon, G.B. Penner, E, Simko and S. Hendrick. 2014. Evaluation of Mineral Status in High Dietary Sulphur Exposed or Sulphur-Induced Polioencephalomalacia Affected Beef Cattle. Can. J. Anim. Sci. (Accepted).
- S. Amat, J.J. McKinnon, G.B. Penner, and S. Hendrick. 2014. Effects of Dietary Sulfur Concentration and Forage to Concentrate Ratio on Ruminal Fermentation, Sulfur Metabolism and Short Chain Fatty Acid Absorption in Beef Heifers. J. Anim. Sci. (Accepted).
- P. Górka, J.J. McKinnon, G. B. Penner. 2013. Use of High-Lipid By-product Pellets as a Partial Replacement for Barley Grain and Canola Meal in Finishing Diets for Beef Steers. Can. J. Anim. Sci. 93:523-528.
- R.M. Petri, T. Schwaiger1, G.B. Penner, K.A. Beauchemin1, R.J. Forster, J.J. McKinnon, T.A. McAllister. 2014. Characterization of the Core Rumen Microbiome in Cattle during Transition from Forage to Concentrate as well as during and after an Acidotic Challenge. PLOS ONE 8:e83424
- R.M. Petri, T. Schwaiger, G.B. Penner, K. Beauchemin, R. Forster, J.J. McKinnon, and T. A. McAllister. 2013. Changes in the Rumen Epimural Bacterial Diversity of Beef Cattle as Affected by Diet and Induced Ruminal Acidosis. Applied Environ Microbiol. 79:3744-55.
- K.L. Davies, J.J. McKinnon and T. Mutsvangwa. 2013. Effects of Dietary Ruminally
Degradable Starch and Ruminally Degradable Protein Level on Urea Recycling, Microbial Protein Production, Nitrogen Balance and Duodenal Nutrient Flow in Heifers fed Low Crude Protein Diets. Can. J. Anim. Sci. 93:123-126.
- A. D. Friedt and J.J. McKinnon. 2012. Effects of Feeding Wheat Bran and Condensed Liquid Whey in Diets of Growing Cattle. Can. J. Anim. Sci. 92:501-504.
- D. Damiran, A. Jonker, X, Zhang, M. Yari, J.J. McKinnon, T.A. McAllister, S. Abeysekara, and P. Yu. 2013. Evaluation of the Feed Value for Ruminants of Blends of Corn and Wheat Distillers Dried Grains. J. Agri. and Food Chem. 61:4387-4395.
- N. Aldai, A.V. Klieve, M.E.R. Dugan, J.K.G. Kramer, D. Ouwerkerk, J.L. Aalhus, J.J. McKinnon and T.A. McAllister, 2012. Evaluation of rumen fatty acid hydrogenation intermediates and differences in bacterial communities after feeding wheat- or corn-based dried distillers grains to feedlot cattle. J. Anim. Sci. 90:2699-2709.
- L.J. Walter, T.A. McAllister, W.Z. Yang, K.A. Beauchemin, M. He, and J.J. McKinnon, 2012. Comparison of wheat or corn dried distillers grains with solubles on rumen fermentation and nutrient digestibility by feedlot heifers. J. Anim. Sci., 90:1291-1300.
- W.Z. Yang, Y.L. Li, T.A. McAllister, J.J. McKinnon and K.A. Beauchemin. 2012. Wheat distillers grains in feedlot cattle diets: Feeding behavior, growth performance, carcass characteristics, and blood metabolites. J. Anim. Sci. 90:1301-1310.
- A.K. Ward, J.J. McKinnon, S. Hendrick and F. Buchanan. 2012. The impact of vitamin A restriction and ADH1C genotype on marbling in feedlot steers. J. Anim. Sci. 90: 2476 - 2483.
- R.M. Petri, R.J. Foster, W. Z. Yang, J.J. McKinnon, T.A. McAllister, 2012. Characterization of rumen bacterial diversity and fermentation parameters in concentrate fed cattle with and without forage. J. App. Microbiol. 112: 1152-1162
- S. Arya and J.J. McKinnon, 2011. The Effects of a Low Lignin Hull, High Oil Groat Oat on the Performance and Carcass Characteristics of Feedlot Cattle. Canadian Journal of Animal Science 91” 685-693.
- L.J. Walter, J.L. Aalhus, W.M. Robertson, T.A. McAllister, D.J. Gibb, M.E.R. Dugan, N. Aldai and J.J. McKinnon, 2010. Comparison of Wheat or Corn Dried Distillers Grains With Solubles on Performance and Carcass Characteristics of Feedlot Steers. Canadian Journal of Animal Science. 90: 259-269.
- N. Aldai, M.E.R. Dugan, J.L. Aalhus, T.A. McAllister, L.J. Walter and J.J. McKinnon, 2010. Difference in the Trans-18:1 Profile of the Backfat of Feedlot Steers Fed Wheat or Corn Based Dried Distillers Grains. Animal Feed Science and Technology, 157: 168-172.
- N. Aldai, J.L. Aalhus, M.E.R. Dugan, W.M. Robertson, T.A. McAllister, L.J. Walter and J.J. McKinnon, 2010. Comparison of Wheat- Versus Corn-Based Dried Distillers’ Grains with Soluble on Meat Quality of Feedlot Cattle. Meat Science. 84: 569-577.
- H. C. Block, J.L. Bourne, H.A. Lardner and J.J. McKinnon, 2010. Evaluation of NRC (2000) Model Energy Requirements and DMI Equations Accuracy and Precision for wintering Cows in Western Canada. Canadian Journal of Animal Science, 90: 245-258.
John McKinnon's Department of Animal and Poultry Science Webpage
This webpage was last updated on April 9, 2014. The linked pages in this
series may have been updated more recently however.
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