Projects per year
Professor of Ruminant Nutrition & Production Systems; Head of Beef & Sheep Research Centre (2013-2017); Head of Dairy Research and Innovation Centre (2016-date): Interim Head of Future Farming Systems Group (2016-2019); SRUC: Scotland’s Rural College.
Principal Research Officer: Teagasc, Animal and Grassland Research & Innovation Centre, Ireland. Head of Animal and Bioscience Research Department: (2009 to 2013).
Professor of Dairy Production: Lincoln University, New Zealand.
Senior Research Scientist (1993-1999), then Principal Research Scientist (1999-2005): IGER, Aberystwyth, UK. This appointment included periods as Group Leader: Feeding Strategies (1994-1995); Acting Head: Ruminant Nutrition Department (1995); Group Leader: Ruminant Nutrition (1996-2002); Team Leader: Nutrition and Microbiology (2002-2005).
Lecturer/Adviser Grade 3: Grassland and Ruminant Science Department, Scottish Agricultural College, UK. Honorary Lecturer: University of Glasgow.
Research Assistant Grade 1A: Department of Animal Husbandry, University of Bristol, UK.
Non-Executive Director of Agri-EPI Centre Ltd.: Agri-Tech Innovation Centre for precision agriculture and engineering.
- Substantial academic contributions at the interfaces between dairy nutrition, milk composition and rumen function - notably modelling of forage composition, dry cow feeding strategies, forages and fatty acids, fatty acids and fertility, and rumen diagnostics.
- Some work used directly by the animal feed industry – notably feed evaluation systems, feed values and dry cow strategies. Much more of my work has been used by farmers and advisers – notably to develop advice and models to predict and increase forage intakes, improve the utilisation of feed protein (reduce N pollution), improve milk composition, and facilitate the use of forage legumes in conventional and organic farming.
- Current research is developing markers/proxies for digestive efficiency, feed efficiency and greenhouse gas emissions by ruminants – including through the use of gene-centric and 16S-based rumen metagenomics, as well as Nitrogen isotopic fractionation.
MSc Animal Nutrition.
Main Supervisor for 3 PhD students and Associate Supervisor for 8 PhD students.
External examiner (or Opponent) for PhDs awarded by Universities in: UK, Ireland, Belgium, Finland, Sweden, Denmark, Australia and New Zealand.
PhD, University of Bristol
Oct 1984 → Dec 1989
Award Date: 1 Dec 1989
Bachelor, University of Oxford
Oct 1981 → May 1984
Award Date: 31 May 1984
British Society of Animal Science2015 → 20192014 → …2014 → 20172012
Animal (journal)2006 → 2016
New Zealand Society of Animal Production2006 → 20082003 → 20052002 → 2008
The Nutrition Society1997 → 2001
British Society of Animal Science1993 → 2019
Precision Livestock Farming (PLF) Technologies to reduce greenhouse gas (GHG) emissions intensity of pasture-based cattle systems
1/10/19 → 30/09/22
Elucidating bovine host genomic links with rumen microbial genes to improve sustainably feed conversion efficiency using unique selection criteria
1/05/19 → 30/04/22
1/03/18 → 31/03/23
A bio-economic model for cost analysis of alternative management strategies in beef finishing systemsKamilaris, C., Dewhurst, RJ., Vosough Ahmadi, B., Crosson, P. & Alexander, P., Apr 2020, In: Agricultural Systems. 180, 102713.
Research output: Contribution to journal › Article › peer-reviewOpen AccessFile2 Downloads (Pure)
A heat diffusion multilayer network approach for the identification of functional biomarkers in rumen methane emissionsWang, M., Wang, H., Zheng, H., Dewhurst, RJ. & Roehe, R., 15 Oct 2020, In: Methods. 10 p., 2020.09.014 .
Research output: Contribution to journal › Article › peer-review
Dewhurst, R. J. & Roehe, R., Jul 2020, In: IEEE Transactions on Nanobioscience. 19, 3, p. 518-526 9 p.
Research output: Contribution to journal › Article › peer-reviewOpen AccessFile2 Citations (Scopus)7 Downloads (Pure)
Identification of complex rumen microbiome interaction within diverse functional niches as mechanisms affecting the variation of methane emissions in bovineMartinez Alvaro, M., Auffret, MD., Stewart, R. D., Dewhurst, RJ., Duthie, C-A., Rooke, JA., Wallace, R. J., Shih, B., Freeman, T. C., Watson, M. & Roehe, R., 17 Apr 2020, In: Frontiers in Microbiology. 11, 659.
Research output: Contribution to journal › Article › peer-reviewOpen AccessFile2 Citations (Scopus)4 Downloads (Pure)
Identification of microbial genetic capacities and potential mechanisms within the rumen microbiome explaining differences in beef cattle feed efficiencyAuffret, MD., Stewart, R., Dewhurst, RJ., Duthie, C-A., Watson, M. & Roehe, R., 5 Jun 2020, In: Frontiers in Microbiology. 11, p. 1-16 16 p., 1229.
Research output: Contribution to journal › Article › peer-reviewOpen AccessFile20 Downloads (Pure)