Dr. Renée M Petri

Image Renee M. Petri
Research Scientist Gastrointestinal Microbiome

The application of multi-omics approaches to the tracking and assessment of the gastrointestinal microbiome for rumen, GIT and animal health. To evaluate the impact of feed, feed-management and feed additives on AMR, host-microbe crosstalk, immunity and the mitigation of production related diseases.

Current research and/or projects

My current projects are based on understanding the feed-microbiome-host interactions, specifically with regard to developing knowledge in the area of animal and rumen health. The diverse approaches used in these studies make use of the ever increasing molecular and bioinformatic tools available and have applied knowledge and techniques from human medical research to improve the health and sustainability of animal agriculture.

Research and/or project statements

- Role of the gastrointestinal microbiome in animal immunity and productivity

- Evaluate feed management in transition on metabolic disorders, rumen dysbiosis and immunity

- Determining the impact of the energy to protien ratio in forages on the adherent ruminal microbes and their metabolism

- Impact of feed additives on the host-microbiome crosstalk

Professional activities / interests

Associate Editor Canadian Journal of Animal Science

Education and awards

Ph.D. Nutritional Microbiology, University of Saskatchewan, 2013

M.S.c Ruminant Nutrition, University of Saskatchewan, 2009

B.S.c Animal Science, University of Alberta, 2005


Young Researcher Development Program 2015-2019, 260,000€

University of Saskatchewan MSc Scholarship 2006-2007, $10,000

International experience and/or work

Research Group Leader Feed-Gut-Microbiome, University of Veterinary Medicine, Vienna 2019-2020

Post Doctoral Researcher Host-Microbiome Interactions, University of Veterinary Medicine, Vienna, 2015-2019

Contract Research Scientist, Bioinformatics, Agriculture and Agri-Food Canada, 2013-2015

Key publications


RM Petri, V Neubauer, I Kröger, E Humer, N Reisinger, Q Zebeli.  (2020): Feed Additives Differentially Impact the Epimural Microbiota and Host Epithelial Gene Expression of the Bovine Rumen Fed Diets Rich in Concentrates. Frontiers in microbiology, 11, p.119.

M Mahmood, RM Petri, A GavrĂu, Q Zebeli, R Khiaosa‐ard. (2020). Betaine addition as a potent ruminal fermentation modulator under hyperthermal and hyperosmotic conditions in vitro. Journal of the Science of Food and Agriculture.

F Klevenhusen, C Emsenhuber, H Grausgruber, RM Petri, Q Zebeli (2019). Effects of the orange lemma (rob1) mutant line of barley cv.‘Optic’compared with its wild-type on the ruminal microbiome and fermentation tested with the rumen simulation technique. Crop and Pasture Science, 70(9), 789-799.

BU Metzler-Zebeli, SC Siegerstetter, E Magowan, PG Lawlor, RM Petri, NE O Connell, Q Zebeli. (2019): Feed Restriction Modifies Intestinal Microbiota-Host Mucosal Networking in Chickens Divergent in Residual Feed Intake. mSystems. 4(1):e00261-18.

V Neubauer, E Humer, E Mann, I Kröger, N Reisinger, M Wagner, Q Zebeli, RM Petri. (2019): Effects clay mineral supplementation on particle-associated and epimural microbiota, and gene expression in the rumen of cows fed high-concentrate diet. Anaerobe. 2019

RM Petri,  E Mickdam, F Klevenhusen, B Beyer, Q Zebeli. (2019): Effects of the supplementation of plant-based formulations on microbial fermentation and predicted metabolic function in vitro. Anaerobe. 2019; [Article in Press]

RM Petri,  M Münnich, Q Zebeli, F Klevenhusen. (2019): Graded replacement of corn grain with molassed sugar beet pulp modulates the fecal microbial community and hindgut fermentation profile in lactating dairy cows. J Dairy Sci. 2019; 102(6):5019-5030

RM Petri,  SU Wetzels, M Qumar, R Khiaosa-Ard, Q Zebeli. (2019): Adaptive responses in short-chain fatty acid absorption, gene expression, and bacterial community of the bovine rumen epithelium recovered from a continuous or transient high-grain feeding. J Dairy Sci. 2019; 102(6):5361-5378

C Sarnataro, RM Petri, M Spanghero, Q Zebeli, F Klevenhusen. (2019): A nutritional and rumen ecological evaluation of the biorefinery by-product alfalfa silage cake supplemented with Scrophularia striata extract using the rumen simulation technique (Rusitec). J Sci Food Agric. 99(9): 4414-4422

M Bagheri Varzaneh, F Klevenhusen, Q Zebeli RM Petri (2018): Supplementing Scrophularia striata extracts mitigates methane production and beneficially affects rumen fermentation and antioxidant properties in cattle in vitro. Frontiers in Microbiology.

RM Petri, MT Kleefisch, BU Metzler-Zebeli, Q Zebeli, F Klevenhusen (2018): Changes in the Rumen Epithelial Microbiota of Cattle and Host Gene Expression in Response to Alterations in Dietary Carbohydrate Composition. Appl Environ Microbiol. 84(12).

RM Petri, P Vahmani, HE Yang, MER Dugan, TA McAllister (2018): Changes in Rumen Microbial Profiles and Subcutaneous Fat Composition When Feeding Extruded Flaxseed Mixed With or Before Hay. Front Microbiol. 9:1055

E Humer, S Aditya, A Kaltenegger, F Klevenhusen, RM Petri, Q Zebeli (2018): Graded substitution of grains with bakery by-products modulates ruminal fermentation, nutrient degradation, and microbial community composition in vitro. J Dairy Sci. 101(4):3085-3098

NZ Lupwayi, WE May, DA Kanashiro, RM Petri (2018): Soil bacterial community responses to black medic cover crop and fertilizer N under no-till. Applied Soil Ecology 124: 95-103

V Neubauer, RM Petri, E Humer, I Kröger, E Mann, N Reisinger, M Wagner, Q Zebeli (2018): High-grain diets supplemented with phytogenic compounds or autolyzed yeast modulate ruminal bacterial community and fermentation in dry cows. J Dairy Sci. 101(3):2335-2349

MA Newman, RM Petri, D Grüll, Q Zebeli, BU Metzler-Zebeli (2018): Transglycosylated Starch Modulates the Gut Microbiome and Expression of Genes Related to Lipid Synthesis in Liver and Adipose Tissue of Pigs. Front Microbiol. 9:224

E Humer, RM Petri, JR Aschenbach, BJ Bradford, GB Penner, M Tafaj, KH Südekum, Q Zebeli (2018): Invited review: Practical feeding management recommendations to mitigate the risk of subacute ruminal acidosis in dairy cattle. Journal of Dairy Science DOI:10.3168/jds.2017-13191

V Neubauer, RM Petri, I Kröger, E Humer, E Mann, N Reisinger, M Wagner, and Q Zebeli (2018): High-grain diets and supplementation with phytogenic compounds or autolyzed yeast modulate rumen digesta-associated bacteria and fermentation parameters in cows.  Journal of Dairy Science 101(3):2335-2349.

NZ Lupwayi, FJ Larney, RE Blackshaw, DA Kanashiro, DC Pearson and RM Petri (2018): Profiles of soil bacterial communities revealed by pyrosequencing after 12 years of conservation vs. conventional management of irrigated crop rotations.  Journal of Applied Soil Ecology 124: 95-103. DOI: 10.1016/j.apsoil.2017.11.003.

SC Siegerstetter, RM Petri, E Magowan, PG Lawlor, Q Zebeli, NE O'Connell, BU Metzler-Zebeli (2018): Fecal microbiota transplant from highly feed efficient donors shows little effects on age-related changes in feed efficiency-associated fecal microbiota in chickens. Applied and Environmental Microbiology 84(2); DOI:10.1128/AEM.02330-17.

NZ Lupwayi, FJ Larney, RE Blackshaw, DA Kanashiro, DC Pearson, RM Petri: Pyrosequencing reveals profiles of soil bacterial communities after 12 years of conservation management on irrigated crop rotations. Applied Soil Ecology 2017; 121: 65-73

F Klevenhusen, RM Petri, M-T Kleefisch, R Khiaosa-Ard, BU Metzler-Zebeli, Q Zebeli: Changes in fibre-adherent and fluid-associated microbial communities and fermentation profiles in the rumen of cattle fed diets differing in hay quality and concentrate amount. FEMS Microbiology Ecology 09/2017; 93(9)., DOI:10.1093/femsec/fix100

RM Petri, P Pourazad, R Khiaosa-Ard, F Klevenhusen, BU Metzler-Zebeli, Q Zebeli: Temporal dynamics of in-situ fiber-adherent bacterial community under ruminal acidotic conditions determined by 16S rRNA gene profiling. PLoS One. 2017; 12(8):e0182271

RM Petri, Cletos Mapiye, Mike E R Dugan, Tim A McAllister: Subcutaneous Adipose Fatty Acid Profiles and Related Rumen Bacterial Populations of Steers Fed Red Clover or Grass Hay Diets Containing Flax or Sunflower-Seed. PLoS ONE 08/2014; 9(8):e104167. DOI:10.1371/journal.pone.0104167

RM Petri, T Schwaiger, GB Penner, KA Beauchemin, RJ Forster, JJ McKinnon, TA McAllister: Changes in the Rumen Epimural Bacterial Diversity of Beef Cattle as Affected by Diet and Induced Ruminal Acidosis. Applied and Environmental Microbiology 04/2013; 79(12). DOI:10.1128/AEM.03983-12 (cit:118)

RM Petri, T Schwaiger, GB Penner, KA Beauchemin, RJ Forster, JJ McKinnon, TA McAllister: 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 12/2013; 8(12):e83424. DOI:10.1371/journal.pone.0083424* (cit: 162)

RM Petri, RJ Forster, W Yang, JJ McKinnon, TA McAllister: Characterization of rumen bacterial diversity and fermentation parameters in concentrate fed cattle with and without forage. Journal of Applied Microbiology 03/2012; 112(6):1152-62. DOI:10.1111/j.1365-2672.2012.05295.x (cit: 74)

RM (Beliveau) Petri**, JJ Mckinnon: Effect of graded levels of wheat-based dried distillers' grains with solubles on rumen fermentation in finishing cattle. Canadian Journal of Animal Science 07/2009; 89(4). DOI:10.4141/CJAS08113

R M (Beliveau) Petri, J J Mckinnon: Effect of graded levels of wheat-based dried distillers' grains with solubles on performance and carcass characteristics of feedlot steers. Canadian Journal of Animal Science 12/2008; 88(4) DOI:10.4141/CJAS08045

RA Renema, FE Robinson, RM (Beliveau) Petri, HC Davis, EA Lindquist: Relationships of Body Weight, Feathering, and Footpad Condition with Reproductive and Carcass Morphology of End-of-Season Commercial Broiler Breeder Hens. The Journal of Applied Poultry Research 03/2007; 16(1-1):27-38 DOI:10.1093/japr/16.1.27



Research facility

2000 College Street
Sherbrooke, QC J1M 1Z3


Member of the American Society of Animal Science and the Austrian Microbiome Initiative

Adjunct Professor, Dalhousie University




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