Uptake, cycling and fate of nitrogen in grass-clover swards continuously grazed by sheep

Parsons, A. J., Orr, R. J., Penning, P. D. and Lockyer, D. R. 1991. Uptake, cycling and fate of nitrogen in grass-clover swards continuously grazed by sheep. The Journal of Agricultural Science. 116, pp. 47-61. https://doi.org/10.1017/S0021859600076139

Related outputs

Livestock Performance for Sheep and Cattle Grazing Lowland Permanent Pasture: Benchmarking Potential of Forage-Based Systems

A - Papers appearing in refereed journals

Orr, R. J., Griffith, B. A., Rivero-Viera, J. and Lee, M. R. F. 2019. Livestock Performance for Sheep and Cattle Grazing Lowland Permanent Pasture: Benchmarking Potential of Forage-Based Systems . Agronomy. 9 (2), p. 101. https://doi.org/10.3390/agronomy9020101

Reemplazo de una pradera permanente y su efecto en el primer año en una lechería comercial

A - Papers appearing in refereed journals

Rivero-Viera, J., Orr, R. J., Coumbe, J., Willson, B., Evans, J. and Lee, M. R. F. 2018. Reemplazo de una pradera permanente y su efecto en el primer año en una lechería comercial . Agro Sur. 46 (1), pp. 3-12. https://doi.org/10.4206/agrosur.2018.v46n1-02

Creating productive diverse grassland for multi-ecosystem services: an example of agri-environment schemes policies driven by science in United Kingdom

A - Papers appearing in refereed journals

Beaumont, D. A., Griffith, B. A., Dunn, R. M., Orr, R. J., Rivero-Viera, J., Woodcock, B., Pywell, R. and Tallowin, J. R. B. 2018. Creating productive diverse grassland for multi-ecosystem services: an example of agri-environment schemes policies driven by science in United Kingdom. Agro Sur. 46 (2), pp. 3-5. https://doi.org/10.4206/agrosur.2018.v46n2-02

Data to calculate emissions intensity for individual beef cattle reared on pasture-based production systems

A - Papers appearing in refereed journals

McAuliffe, G. A., Takahashi, T., Orr, R. J., Harris, P. and Lee, M. R. F. 2018. Data to calculate emissions intensity for individual beef cattle reared on pasture-based production systems. Data in Brief. 17, pp. 570-574. https://doi.org/10.1016/j.dib.2018.01.075

Roles of instrumented farm-scale trials in trade-off assessments of pasture-based ruminant production systems

A - Papers appearing in refereed journals

Takahashi, T., Harris, P., Blackwell, M. S. A., Cardenas, L. M., Collins, A. L., Dungait, J. A. J., Hawkins, J. M. B., Misselbrook, T. H., McAuliffe, G. A., McFadzean, J. N., Murray, P. J., Orr, R. J., Rivero, M. J., Wu, L. and Lee, M. R. F. 2018. Roles of instrumented farm-scale trials in trade-off assessments of pasture-based ruminant production systems. Animal. 12 (8), pp. 1766-1776. https://doi.org/10.1017/S1751731118000502

Distributions of emissions intensity for individual beef cattle reared on pasture-based production systems

A - Papers appearing in refereed journals

McAuliffe, G. A., Takahashi, T., Orr, R. J., Harris, P. and Lee, M. R. F. 2018. Distributions of emissions intensity for individual beef cattle reared on pasture-based production systems. Journal of Cleaner Production. 171, pp. 1672-1680. https://doi.org/10.1016/j.jclepro.2017.10.113

An evaluation of the hysteresis in chemical concentration–discharge (C–Q) relationships from drained, intensively managed grasslands in southwest England

A - Papers appearing in refereed journals

Eludoyin, A. O., Griffith, B., Orr, R. J., Bol, R., Quine, T. A. and Brazier, R. E. 2017. An evaluation of the hysteresis in chemical concentration–discharge (C–Q) relationships from drained, intensively managed grasslands in southwest England. Hydrological Sciences Journal. 62 (8), pp. 1243-1254. https://doi.org/10.1080/02626667.2017.1313979

The North Wyke Farm Platform: effect of temperate grassland farming systems on soil moisture contents, runoff and associated water quality dynamics

A - Papers appearing in refereed journals

Orr, R. J., Murray, P. J., Eyles, C. J., Blackwell, M. S. A., Cardenas, L. M., Collins, A. L., Dungait, J. A. J., Goulding, K. W. T., Griffith, B. A., Gurr, S. J., Harris, P., Hawkins, J. M. B., Misselbrook, T. H., Rawlings, C. J., Shepherd, A., Sint, H. M., Takahashi, T., Tozer, K. N., Whitmore, A. P., Wu, L. and Lee, M. R. F. 2016. The North Wyke Farm Platform: effect of temperate grassland farming systems on soil moisture contents, runoff and associated water quality dynamics. European Journal of Soil Science. 67 (4), pp. 374-385. https://doi.org/10.1111/ejss.12350

Greenhouse gas emissions from a reseeded grassland on the North Wyke Farm Platform

C2 - Non-edited contributions to conferences

Dunn, R. M., Boden, J., Misselbrook, T. H., Orr, R. J., Griffith, B. A., Neale, J. and Cardenas, L. M. 2016. Greenhouse gas emissions from a reseeded grassland on the North Wyke Farm Platform. Abstracts International Conference on Steps to Sustainable Livestock, Bristol, 12-15 January 2016 .

Data mining the North Wyke Farm Platform data sets

C2 - Non-edited contributions to conferences

Harris, P., Griffith, B. A., Sint, H. M., Cardenas, L. M., Dungait, J. A. J., Orr, R. J. and Lee, M. R. F. 2016. Data mining the North Wyke Farm Platform data sets. Abstracts International Conference on Steps to Sustainable Livestock, Bristol, 12-15 January 2016 .

Contextualized geographically weighted principal components analysis for investigating baseline soils data on the North Wyke Farm Platform

C1 - Edited contributions to conferences/learned societies

Harris, P., Howden, N. J. K., Peukert, S., Noacco, V., Ramezani, K., Tuominen, E., Eludoyin, B., Brazier, R., Shepherd, A., Griffith, B. A., Orr, R. J. and Murray, P. J. 2016. Contextualized geographically weighted principal components analysis for investigating baseline soils data on the North Wyke Farm Platform. Raju, N. J. (ed.) Geostatistical and Geospatial Approaches for the Characterization of Natural Resources in the Environment: Proceedings 16th Annual Conference of the International Association for Mathematical Geosciences, New Delhi, 17-20 October 2014 . Springer, Cham. pp. 651-655 https://doi.org/10.1007/978-3-319-18663-4_99

The North Wyke Farm Platform, a UK national capability for research into sustainability of temperate agricultural grassland management: progress and developments

C2 - Non-edited contributions to conferences

Harris, P., Dungait, J. A. J., Griffith, B. A., Shepherd, A., Sint, H. M., Blackwell, M. S. A., Cardenas, L. M., Collins, A. L., Goulding, K. W. T., Lee, M. R. F. and Orr, R. J. 2015. The North Wyke Farm Platform, a UK national capability for research into sustainability of temperate agricultural grassland management: progress and developments. EGU.

Capturing the spatial variability of N2O emissions on grazed grasslands

C2 - Non-edited contributions to conferences

Cardenas, L. M., Dunn, R. M., Shepherd, A., Misselbrook, T. H., Orr, R. J., Griffith, B. A., Velazquez, A., Burak, E., Chen, K., Harris, P., Repullo, M. and Collins, A. L. 2015. Capturing the spatial variability of N2O emissions on grazed grasslands. Abstracts ASA/CSSA/SSSA International Annual Meeting Synergy in Science: Partnering for Solutions, Minneapolis, 15-18 November 2015 .

The North Wyke Farm Platform, a national capability for research into sustainability of temperate agricultural grassland management: data and modelling opportunities

C2 - Non-edited contributions to conferences

Harris, P., Griffith, B. A., Shepherd, A., Peukert, S., Hawkins, J. M. B., Elyes, C., Whitmore, A. P., Blackwell, M. S. A., Brazier, R. E., Cardenas, L. M., Wu, L., Dungait, J. A. J., Collins, A. L., Gurr, S. J., Murray, P. J., Goulding, K. W. T. and Orr, R. J. 2014. The North Wyke Farm Platform, a national capability for research into sustainability of temperate agricultural grassland management: data and modelling opportunities. Abstracts Tereno International Conference: from Observation to Prediction in Terrestrial Systems, Bonn, 29 September-2 October 2014 . pp. P2-07

Beef productivity on the North Wyke Farm Platform in two baseline years

C2 - Non-edited contributions to conferences

Thompson, J. B., Orr, R. J., Dungait, J. A. J., Murray, P. J. and Lee, M. R. F. 2014. Beef productivity on the North Wyke Farm Platform in two baseline years. Hopkins, A. (ed.) EGF at 50: the Future of European Grasslands. Proceedings of the 25th General Meeting of the European Grassland Federation, Aberystwyth, 7-11 September 2014 . pp. 644-646

Applications and issues of remote sensing by UAV to pasture agri-research on the North Wyke Farm Platform

C2 - Non-edited contributions to conferences

Shepherd, A., Harris, P., Orr, R. J., Griffith, B. A. and Jarman, M. 2014. Applications and issues of remote sensing by UAV to pasture agri-research on the North Wyke Farm Platform. Abstracts Annual Conference of the Remote Sensing and Photogrammetry Society (RSPSoc 2014), Aberystwyth, 2-5 September 2014 .

Geographically weighted principal components analysis for understanding spatial structure in data for sustainable grassland agriculture

C2 - Non-edited contributions to conferences

Harris, P., Shepherd, A., Orr, R. J., Griffith, B. A. and Murray, P. J. 2014. Geographically weighted principal components analysis for understanding spatial structure in data for sustainable grassland agriculture. Abstracts 16th Annual Conference of the International Association for Mathematical Geosciences (IAMG), New Delhi, 17-20 October 2014 .

Applications of high resolution remote sensing with spatial modelling for sustainable grassland agriculture

C2 - Non-edited contributions to conferences

Shepherd, A., Harris, P., Orr, R. J., Griffith, B. A. and Murray, P. J. 2014. Applications of high resolution remote sensing with spatial modelling for sustainable grassland agriculture. Abstracts 16th Annual Conference of the International Association for Mathematical Geosciences (IAMG), New Delhi, 17-20 October 2014 .

Enhancing floral resources for pollinators in productive agricultural grasslands

A - Papers appearing in refereed journals

Woodcock, B. A., Savage, J., Bullock, J. M., Nowakowski, M., Orr, R. J., Tallowin, J. R. B. and Pywell, R. F. 2014. Enhancing floral resources for pollinators in productive agricultural grasslands. Biological Conservation. 171, pp. 44-51. https://doi.org/10.1016/j.biocon.2014.01.023

Effects of livestock breed and rearing experience on foraging behaviour of yearling beef cattle grazing unimproved grasslands

A - Papers appearing in refereed journals

Orr, R. J., Tallowin, J. R. B., Griffith, B. A. and Rutter, S. M. 2014. Effects of livestock breed and rearing experience on foraging behaviour of yearling beef cattle grazing unimproved grasslands. Grass and Forage Science. 69 (1), pp. 90-103. https://doi.org/10.1111/gfs.12030

The North Wyke Farm Platform: a new UK national capability for research into sustainability of agricultural temperate grassland management

C2 - Non-edited contributions to conferences

Murray, P. J., Griffith, B. A., Orr, R. J., Shepherd, A., Blackwell, M. S. A., Hawkins, J. M. B. and Peukert, S. 2013. The North Wyke Farm Platform: a new UK national capability for research into sustainability of agricultural temperate grassland management. Michalk, D. L. (ed.) Proceedings 22nd International Grassland Congress, Sydney, 15-19 September 2013 . New South Wales Dept of Primary Industry, Orange. pp. 1931-1933

The North Wyke Farm Platform - a new National Capability for investigating sustainable intensification of livestock production

C2 - Non-edited contributions to conferences

Murray, P. J., Griffith, B. A., Orr, R. J., Peukert, S. and Shepherd, A. 2013. The North Wyke Farm Platform - a new National Capability for investigating sustainable intensification of livestock production. Abstracts Conference on Sustainable Intensification: the Pathway to Low Carbon Farming? Edinburgh, 25-27 September 2013 . pp. 179-180

North Wyke Farm Platform: methodologies used in the remote sensing of the quantity and quality of drainage water

C2 - Non-edited contributions to conferences

Griffith, B. A., Hawkins, J. M. B., Orr, R. J., Blackwell, M. S. A. and Murray, P. J. 2013. North Wyke Farm Platform: methodologies used in the remote sensing of the quantity and quality of drainage water. Michalk, D. L. (ed.) Proceedings 22nd International Grassland Congress, Sydney, 15-19 September 2013 . New South Wales Dept of Primary Industry, Orange. pp. 1453-1455

Enhancing beetle and spider communities in agricultural grasslands: the roles of seed addition and habitat management

A - Papers appearing in refereed journals

Woodcock, B. A., Savage, J., Bullock, J. M., Nowakowski, M., Orr, R. J., Tallowin, J. R. B. and Pywell, R. F. 2013. Enhancing beetle and spider communities in agricultural grasslands: the roles of seed addition and habitat management. Agriculture, Ecosystems & Environment. 167, pp. 79-85. https://doi.org/10.1016/j.agee.2013.01.009

Improved understanding of solute concentration-discharge dynamics through state-of-the-art antecedent moisture content (AMC) monitoring and analysis

C2 - Non-edited contributions to conferences

Eludoyin, A. O., Brazier, R., Quine, T., Bol, R., Orr, R. J. and Griffith, B. A. 2012. Improved understanding of solute concentration-discharge dynamics through state-of-the-art antecedent moisture content (AMC) monitoring and analysis. EGU.

Foraging paths through vegetation patches for beef cattle in semi-natural pastures

A - Papers appearing in refereed journals

Orr, R. J., Tozer, K. N., Griffith, B. A., Champion, R. A., Cook, J. E. and Rutter, S. M. 2012. Foraging paths through vegetation patches for beef cattle in semi-natural pastures. Applied Animal Behaviour Science. 141 (1-2), pp. 1-8. https://doi.org/10.1016/j.applanim.2012.07.003

Defaecation and urination behaviour in beef cattle grazing semi-natural grassland

A - Papers appearing in refereed journals

Orr, R. J., Griffith, B. A., Champion, R. A. and Cook, J. E. 2012. Defaecation and urination behaviour in beef cattle grazing semi-natural grassland. Applied Animal Behaviour Science. 139, pp. 18-25. https://doi.org/10.1016/j.applanim.2012.03.013

Ingestion and excretion of nitrogen and phosphorus by beef cattle under contrasting grazing intensities

A - Papers appearing in refereed journals

Orr, R. J., Griffith, B. A., Cook, J. E. and Champion, R. A. 2011. Ingestion and excretion of nitrogen and phosphorus by beef cattle under contrasting grazing intensities. Grass and Forage Science. 67 (1), pp. 111-118. https://doi.org/10.1111/j.1365-2494.2011.00826.x

Designing and creating the North Wyke Farm Platform

C2 - Non-edited contributions to conferences

Orr, R. J., Griffith, B. A., Rose, S., Hatch, D. J., Hawkins, J. M. B. and Murray, P. J. 2011. Designing and creating the North Wyke Farm Platform. Abstracts Catchment Science 2011, Dublin, 14-16 September 2011 . pp. 35

The North Wyke Farm Platform: a UK national capability for agri-environmental research

C1 - Edited contributions to conferences/learned societies

Hatch, D. J., Murray, P. J., Orr, R. J. and Griffith, B. A. 2011. The North Wyke Farm Platform: a UK national capability for agri-environmental research. Agricultural Ecology Research: its Role in Delivering Sustainable Farm Systems. Aspects of Applied Biology 109 . pp. 115-118

Options for wide scale enhancement of grassland biodiversity under the Entry Level Scheme

C1 - Edited contributions to conferences/learned societies

Pywell, R. F., Woodcock, B. A., Orr, R. J., Tallowin, J. R. B., Mcewen, I., Nowakowski, M. and Bullock, J. M. 2010. Options for wide scale enhancement of grassland biodiversity under the Entry Level Scheme. Agri-environment Schemes - What Have They Achieved and Where Do We Go From here? Aspects of Applied Biology 100 . pp. 125-131

Learning how to model ecosystem trade-offs at the farm scale

C1 - Edited contributions to conferences/learned societies

Pilgrim, E. S., Macleod, C. J. A., Beaumont, D. A., Blackwell, M. S. A., Bol, R., Del Prado, A., Griffith, B. A., Orr, R. J., Shepherd, A., Wu, L. and Firbank, L. G. 2010. Learning how to model ecosystem trade-offs at the farm scale. Yang, W., Filatova, T., Rizzoli, A., Voinov, A. A. and Swayne, D. A. (ed.) Proceedings International Environmental Modelling and Software Society (iEMSs) 2010 International Congress on Environmental Modelling and Software Modelling for Environment's Sake, Ottawa, 5-8 July 2010 . IEMSS. pp. 8pp

Relationship of bite mass of cattle to sward structure of four temperate grasses in short-term grazing sessions

A - Papers appearing in refereed journals

Soder, K. J., Sanderson, M. A., Gregorini, P., Orr, R. J., Rubano, M. D. and Rook, A. J. 2009. Relationship of bite mass of cattle to sward structure of four temperate grasses in short-term grazing sessions. Grass and Forage Science. 64, pp. 421-431. https://doi.org/10.1111/j.1365-2494.2009.00710.x

Use of a micro-sward technique for determining bite mass of four grass species in short-term tests

A - Papers appearing in refereed journals

Soder, K. J., Orr, R. J., Rubano, M. D. and Rook, A. J. 2009. Use of a micro-sward technique for determining bite mass of four grass species in short-term tests. Euphytica. 168, pp. 135-143. https://doi.org/10.1007/s10681-009-9907-6

Optimising nutrient use efficiency in beef cattle grazing lowland semi-natural pastures

D1 - Technical reports: non-confidential

Orr, R. J. 2007. Optimising nutrient use efficiency in beef cattle grazing lowland semi-natural pastures.

Optimising nutrient use efficiency in beef cattle grazing lowland semi-natural pastures

D1 - Technical reports: non-confidential

Orr, R. J. 2006. Optimising nutrient use efficiency in beef cattle grazing lowland semi-natural pastures.

Communicating North Wyke research to others

G - Articles in popular magazines and other technical publications

Hopkins, A., Murray, P. J., Bristow, A. W., Orr, R. J. and Laws, J. A. 2006. Communicating North Wyke research to others. IGER Innovations. 10, pp. 66-70.

Optimising nutrient use efficiency in beef cattle grazing lowland semi-natural pastures

D1 - Technical reports: non-confidential

Orr, R. J. 2005. Optimising nutrient use efficiency in beef cattle grazing lowland semi-natural pastures.

Behavioural and community ecology: understanding mechanisms driving biodiversity in pasture-based systems

G - Articles in popular magazines and other technical publications

Rook, A. J., Tallowin, J. R. B., Rutter, S. M., Orr, R. J., Hopkins, A. and Gibb, M. J. 2005. Behavioural and community ecology: understanding mechanisms driving biodiversity in pasture-based systems. IGER Innovations. 9, pp. 54-57.

Intake characteristics of diploid and tetraploid perennial ryegrass varieties when grazed by Simmental x Holstein yearling heifers under rotational management

C1 - Edited contributions to conferences/learned societies

Orr, R. J., Cook, J. E., Young, K. L. and Rook, A. J. 2005. Intake characteristics of diploid and tetraploid perennial ryegrass varieties when grazed by Simmental x Holstein yearling heifers under rotational management. Murphy, J. J. (ed.) International Grassland Congress Satellite Workshop, Cork, 3-6 July 2005. pp. p151

Intake characteristics of perennial ryegrass varieties when grazed by yearling beef cattle under rotational grazing management

A - Papers appearing in refereed journals

Orr, R. J., Cook, J. E., Young, K. L., Champion, R. A. and Rutter, S. M. 2005. Intake characteristics of perennial ryegrass varieties when grazed by yearling beef cattle under rotational grazing management. Grass and Forage Science. 60 (2), pp. 157-167. https://doi.org/10.1111/j.1365-2494.2005.00463.x

Development of a micro-sward technique for determining intake characteristics of perennial ryegrass varieties

A - Papers appearing in refereed journals

Orr, R. J., Young, K. L., Cook, J. E. and Champion, R. A. 2005. Development of a micro-sward technique for determining intake characteristics of perennial ryegrass varieties. Euphytica. 141 (1-2), pp. 65-73. https://doi.org/10.1007/s10681-005-5365-y

Agronomic and nutritional qualities of grazed grass varieties: development of breeding tools and a new rapid-screening methodology

D1 - Technical reports: non-confidential

Orr, R. J. 2004. Agronomic and nutritional qualities of grazed grass varieties: development of breeding tools and a new rapid-screening methodology.

Focus on IGER North Wyke

G - Articles in popular magazines and other technical publications

Rutter, S. M. and Orr, R. J. 2004. Focus on IGER North Wyke. Grass Farmer . Autumn, pp. 4-6.

Bite dimensions and grazing movements by sheep and cattle grazing homogeneous perennial ryegrass swards

A - Papers appearing in refereed journals

Rook, A. J., Harvey, A., Parsons, A. J., Orr, R. J. and Rutter, S. M. 2004. Bite dimensions and grazing movements by sheep and cattle grazing homogeneous perennial ryegrass swards . Applied Animal Behaviour Science. 88 (3-4), pp. 227-242. https://doi.org/10.1016/j.applanim.2004.03.006

Relationships between morphological and chemical characteristics of perennial ryegrass varieties and intake by sheep under continuous stocking management

A - Papers appearing in refereed journals

Orr, R. J., Cook, J. E., Champion, R. A. and Rook, A. J. 2004. Relationships between morphological and chemical characteristics of perennial ryegrass varieties and intake by sheep under continuous stocking management. Grass and Forage Science. 59 (4), pp. 389-398. https://doi.org/10.1111/j.1365-2494.2004.00440.x

The effect of the spatial scale of heterogeneity of two herbage species on the grazing behaviour of lactating sheep

A - Papers appearing in refereed journals

Champion, R. A., Orr, R. J., Penning, P. D. and Rutter, S. M. 2004. The effect of the spatial scale of heterogeneity of two herbage species on the grazing behaviour of lactating sheep. Applied Animal Behaviour Science. 88 (1-2), pp. 61-76. https://doi.org/10.1016/j.applanim.2004.02.011

Dietary preference of dairy cows grazing ryegrass and white clover.

A - Papers appearing in refereed journals

Rutter, S. M., Orr, R. J., Yarrow, N. H. and Champion, R. A. 2004. Dietary preference of dairy cows grazing ryegrass and white clover. Journal of Dairy Science. 87 (5), pp. 1317-1324. https://doi.org/10.3168/jds.S0022-0302(04)73281-6

Changes in ingestive behaviour of yearling dairy heifers due to changes in sward state during grazing down of rotationally-stocked ryegrass or white clover pastures

A - Papers appearing in refereed journals

Orr, R. J., Rutter, S. M., Yarrow, N. H., Champion, R. A. and Rook, A. J. 2004. Changes in ingestive behaviour of yearling dairy heifers due to changes in sward state during grazing down of rotationally-stocked ryegrass or white clover pastures . Applied Animal Behaviour Science. 87 (3-4), pp. 205-222. https://doi.org/10.1016/j.applanim.2004.01.009

Intake characteristics and plant traits for perennial ryegrass varieties grazed by sheep

C1 - Edited contributions to conferences/learned societies

Orr, R. J. and Rook, A. J. 2003. Intake characteristics and plant traits for perennial ryegrass varieties grazed by sheep. Proceedings 'Crop Quality: Its role in sustainable livestock production', Association of Applied Biologists Conference, Manchester, 15-16 December 2003.

Agronomic and nutritional qualities of grazed grass varieties: development of breeding tools and a new rapid-screening methodology

D1 - Technical reports: non-confidential

Orr, R. J. 2003. Agronomic and nutritional qualities of grazed grass varieties: development of breeding tools and a new rapid-screening methodology.

NIRS prediction of the intake characteristics of grass varieties continuously stocked with sheep

C1 - Edited contributions to conferences/learned societies

Lister, S. J. and Orr, R. J. 2003. NIRS prediction of the intake characteristics of grass varieties continuously stocked with sheep. 7th British Grassland Society (BGS) Research Conference, Aberystwyth, 1-3 September 2003. pp. 67-68

New methods for identification and evaluation of intake characteristics of grass varieties

G - Articles in popular magazines and other technical publications

Orr, R. J. and Cook, J. E. 2003. New methods for identification and evaluation of intake characteristics of grass varieties. IGER Innovations. 7, pp. 30-33.

Development of a sward box methodology for the rapid screening of bite mass in grass varieties intended for grazing

C1 - Edited contributions to conferences/learned societies

Young, K. L., Cook, J. E., Champion, R. A. and Orr, R. J. 2003. Development of a sward box methodology for the rapid screening of bite mass in grass varieties intended for grazing. BGS Organising Committee (ed.) Proceedings 7th British Grassland Society (BGS) Research Meeting, Aberystwyth, UK, 1-3 September 2003. pp. 73-74

Morphological, chemical and intake characteristics of grass varieties grazed by sheep under continuous stocking management

C1 - Edited contributions to conferences/learned societies

Cook, J. E., Champion, R. A. and Orr, R. J. 2003. Morphological, chemical and intake characteristics of grass varieties grazed by sheep under continuous stocking management. BGS Organising Committee (ed.) Proceedings 7th British Grassland Society (BGS) Research Conference, Aberystwyth, UK, 1-3 September 2003. pp. 21-22

Intake characteristics of perennial ryegrass varieties when grazed by sheep under continuous stocking management.

A - Papers appearing in refereed journals

Orr, R. J., Cook, J. E., Champion, R. A., Penning, P. D. and Rook, A. J. 2003. Intake characteristics of perennial ryegrass varieties when grazed by sheep under continuous stocking management. Euphytica. 134 (3), pp. 247-260. https://doi.org/10.1023/B:EUPH.0000004949.49050.78

Intake and dietary choices by grazing ruminants, effects of time of day and water soluble carbohydrate content in forage

C2 - Non-edited contributions to conferences

Rook, A. J., Orr, R. J., Rutter, S. M. and Moorby, J. M. 2002. Intake and dietary choices by grazing ruminants, effects of time of day and water soluble carbohydrate content in forage. American Society of Agronomy Annual Meeting, Indianapolis, Nov 11-14 2002.

Ingestive behaviour of heifers grazing monocultures of ryegrass or white clover

A - Papers appearing in refereed journals

Rutter, S. M., Orr, R. J., Penning, P. D., Yarrow, N. H. and Champion, R. A. 2002. Ingestive behaviour of heifers grazing monocultures of ryegrass or white clover. Applied Animal Behaviour Science. 76 (1), pp. 1-9. https://doi.org/10.1016/S0168-1591(01)00205-2

Effect of long-term changes in relative resource availability on dietary preference of sheep for perennial ryegrass and white clover

A - Papers appearing in refereed journals

Rook, A. J., Harvey, A., Parsons, A. J., Penning, P. D. and Orr, R. J. 2002. Effect of long-term changes in relative resource availability on dietary preference of sheep for perennial ryegrass and white clover. Grass and Forage Science. 57 (1), pp. 54-60. https://doi.org/10.1046/j.1365-2494.2002.00301.x

Ingestive behaviour and management of animals at pasture

C1 - Edited contributions to conferences/learned societies

Gibb, M. J., Orr, R. J., Rutter, S. M. and Huckle, C. A. 2001. Ingestive behaviour and management of animals at pasture. Wade, M. H. (ed.) Manejo del Pastoreo. Meeting of the Argentinean Association of Animal Production, Universidad Nacional de Lujan, Argentina, November 2001.

Evaluation of perennial ryegrass varieties under frequent cutting or continuous stocking with sheep

A - Papers appearing in refereed journals

Orr, R. J., Martyn, T. M. and Clements, R. O. 2001. Evaluation of perennial ryegrass varieties under frequent cutting or continuous stocking with sheep. International Journal of Plant Varieties and Seeds. 14, pp. 181-199.

Low-input heifer beef

G - Articles in popular magazines and other technical publications

Orr, R. J. 2001. Low-input heifer beef. Mole Livestock Initiative Update. 2 (July), p. p2.

Fast maturing Charolais cross Holstein heifers come up trumps

G - Articles in popular magazines and other technical publications

Orr, R. J. and Snaith, L. 2001. Fast maturing Charolais cross Holstein heifers come up trumps. Farmers Guardian. (6 April), p. p1.

Practice into profit with low input dairy bred Charolais crosses

G - Articles in popular magazines and other technical publications

Orr, R. J. and Snaith, L. 2001. Practice into profit with low input dairy bred Charolais crosses. (6).

Preference for grass and clover by dairy cattle: is free choice important?

C1 - Edited contributions to conferences/learned societies

Rutter, S. M., Nuthall, R., Champion, R. A., Orr, R. J. and Rook, A. J. 2001. Preference for grass and clover by dairy cattle: is free choice important? Garner, J. P., Mench, J. A. and Heekin, S. P. (ed.) 35th International Congress of the International Society for Applied Ethology (ISAE), Davis, California, USA, 4-8 August 2001. pp. 039

Intake rate during meals and meal duration for sheep in different hunger states, grazing grass or white clover swards

A - Papers appearing in refereed journals

Orr, R. J., Penning, P. D., Rutter, S. M., Champion, R. A., Harvey, A. and Rook, A. J. 2001. Intake rate during meals and meal duration for sheep in different hunger states, grazing grass or white clover swards. Applied Animal Behaviour Science. 75, pp. 33-45. https://doi.org/10.1016/S0168-1591(01)00176-9

Intake characteristics and performance of contrasting grass varieties continuously stocked with sheep

C1 - Edited contributions to conferences/learned societies

Orr, R. J., Cook, J. E., Champion, R. A. and Rook, A. J. 2001. Intake characteristics and performance of contrasting grass varieties continuously stocked with sheep. Gomide, J. A., Mattos, W. R. S. and Carneiro da Silva, S. (ed.) Grassland Ecosystems: an Outlook into the 21st Century. Proceedings 19th International Grassland Congress, Sao Paulo, Brazil, 10-21 February 2001. Theme 13: Plant Improvement. pp. 529-530

Matching grass supply to grazing patterns for dairy cows

A - Papers appearing in refereed journals

Orr, R. J., Rutter, S. M., Penning, P. D. and Rook, A. J. 2001. Matching grass supply to grazing patterns for dairy cows. Grass and Forage Science. 56 (4), pp. 352-361. https://doi.org/10.1046/j.1365-2494.2001.00284.x

A new approach to the evaluation of herbage varieties under grazing

D1 - Technical reports: non-confidential

Orr, R. J. 2000. A new approach to the evaluation of herbage varieties under grazing.

Making a profit from grassland

G - Articles in popular magazines and other technical publications

Orr, R. J. and Trewin, C. 2000. Making a profit from grassland. Western Morning News (Devon). (26 July).

Clover enriched herbage boosts margins

G - Articles in popular magazines and other technical publications

Orr, R. J. and King, G. 2000. Clover enriched herbage boosts margins. Farming News. (20 July), p. p19.

Benefits from using clover

G - Articles in popular magazines and other technical publications

Orr, R. J. and Newton, K. 2000. Benefits from using clover. Farmers Guardian. (4 August), p. p11.

Assessing grass variety performance under sheep grazing

G - Articles in popular magazines and other technical publications

Orr, R. J. 2000. Assessing grass variety performance under sheep grazing. Sheep Dairy News - Journal of the Sheep Dairying Association. 17, pp. 15-18.

Key to low input production

G - Articles in popular magazines and other technical publications

Orr, R. J. 2000. Key to low input production. Beef Farmer. Summer, pp. 26-28.

Practice into profit: low-input heifer beef production

C1 - Edited contributions to conferences/learned societies

Yarrow, N. H., Orr, R. J. and Shields, R. W. 2000. Practice into profit: low-input heifer beef production. Pullar, D. (ed.) Beef from Grass and Forage. British Grassland Society, Winter Meeting, Stafford, November 2000. British Grassland Society Occasional Symposium, 35. pp. 173-174

Ingestive behaviour of dairy heifers grazing grass or white clover swards under rotational stocking management

C2 - Non-edited contributions to conferences

Orr, R. J., Rutter, S. M., Penning, P. D., Yarrow, N. H., Champion, R. A. and Rook, A. J. 2000. Ingestive behaviour of dairy heifers grazing grass or white clover swards under rotational stocking management. Proceedings 6th British Grassland Society Research Conference, Aberdeen, 11-13 September 2000. pp. 41-42

Evaluation of herbage varieties under continuous stocking

C1 - Edited contributions to conferences/learned societies

Orr, R. J., Cook, J. E., Atkinson, L. D., Clements, R. O. and Martyn, T. M. 2000. Evaluation of herbage varieties under continuous stocking. Rook, A. J. and Penning, P. D. (ed.) Grazing Management: the Principles and Practice of Grazing, for Profit and Environmental Gain, within Temperate Grassland Systems. British Grassland Society (BGS) Occasional Symposium, 34, Harrogate, 29 February - 2 March 2000. British Grassland Society (BGS) Hurley. pp. 39-44

Intake rate, grazing time and daily intake by sheep grazing perennial ryegrass varieties under continuous stocking management

C2 - Non-edited contributions to conferences

Cook, J. E., Champion, R. A., Orr, R. J. and Rook, A. J. 2000. Intake rate, grazing time and daily intake by sheep grazing perennial ryegrass varieties under continuous stocking management. Proceedings 6th British Grassland Society Research Conference, Aberdeen, 11-13 September 2000. pp. 67-68

Dietary preference for grass and white clover in sheep and cattle: an overview

C1 - Edited contributions to conferences/learned societies

Rutter, S. M. and Orr, R. J. 2000. Dietary preference for grass and white clover in sheep and cattle: an overview. Rook, A. J. and Penning, P. D. (ed.) Grazing Management: the Principles and Practice of Grazing, for Profit and Environmental Gain, within Temperate Grassland Systems. British Grassland Society (BGS) Occasional Symposium, 34, Harrogate, 29 February - 2 March 2000. British Grassland Society (BGS) Hurley. pp. 73-78

Dietary preference of sheep for perennial ryegrass and white clover at contrasting sward surface heights

A - Papers appearing in refereed journals

Harvey, A., Parsons, A. J., Rook, A. J., Penning, P. D. and Orr, R. J. 2000. Dietary preference of sheep for perennial ryegrass and white clover at contrasting sward surface heights. Grass and Forage Science. 55 (3), pp. 242-252. https://doi.org/10.1046/j.1365-2494.2000.00222.x

The assessment of quality - grazing and intake

C2 - Non-edited contributions to conferences

Orr, R. J. 1999. The assessment of quality - grazing and intake. Novel Material and the Assessment of Quality, Quality Feeds Theme Development Group Workshop IGER, Aberystwyth, 12 January 1999.

Matching food supply to animals' natural meal patterns

C2 - Non-edited contributions to conferences

Rook, A. J., Gibb, M. J. and Orr, R. J. 1999. Matching food supply to animals' natural meal patterns. Fifth International Symposium on the Nutrition of Herbivores, San Antonio, Texas, USA, 11-16 April 1999.

Long-term dietary preference for grass and clover in dairy cows

C2 - Non-edited contributions to conferences

Rutter, S. M., Orr, R. J., Yarrow, N. H., Champion, R. A., Atkinson, L. D. and Cook, J. E. 1999. Long-term dietary preference for grass and clover in dairy cows. Fifth International Symposium on the Nutrition of Herbivores, San Antonio, Texas, USA, 11-16 April 1999.

How do cattle and sheep alter ingestive behaviour in response to changes in sward state?

C1 - Edited contributions to conferences/learned societies

Penning, P. D., Orr, R. J., Parsons, A. J. and Harvey, A. 1999. How do cattle and sheep alter ingestive behaviour in response to changes in sward state? Buchanan-Smith, J. G., Bailey, L. D. and McCaughey, P. (ed.) Grasslands 2000, Proceedings of the XVIII International Grassland Congress, Winnipeg, Manitoba, Saskatoon, Saskatchewan, Canada, 8-17 June 1997 (Vol 1). Canadian Forage Council, Can Soc Agron, Can Soc Anim Sci.

Efficient use of grazed herbage by dairy cows

D1 - Technical reports: non-confidential

Orr, R. J. 1998. Efficient use of grazed herbage by dairy cows. Institute of Grassland and Environmental Research IGER, North Wyke Okehampton.

Techniques for measuring bite dimensions and movement patterns within and between grazing bouts for cattle and sheep

C1 - Edited contributions to conferences/learned societies

Harvey, A. and Orr, R. J. 1998. Techniques for measuring bite dimensions and movement patterns within and between grazing bouts for cattle and sheep. Gibb, M. J. (ed.) Techniques for Investigating Intake and Ingestive Behaviour by Farm Animals, Proceedings of the Ninth European Intake Workshop, IGER North Wyke, UK, 18-20 November 1998. Institute of Grassland and Environmental Research, IGER, Aberystwyth. pp. 79-80

Movement patterns of sheep and cattle within and between continuous short-term grazing bouts

C1 - Edited contributions to conferences/learned societies

Harvey, A., Parsons, A. J., Orr, R. J., Rutter, S. M. and Rook, A. J. 1998. Movement patterns of sheep and cattle within and between continuous short-term grazing bouts. Veissier, I. and Boissy, A. (ed.) Proceedings of the 32nd International Congress of the International Society of Applied Ethology (ISAE), Clermont-Ferrand, France, 21-25 July 1998.

Matching grass supply to grazing patterns for dairy cows under strip-grazing management

C2 - Non-edited contributions to conferences

Orr, R. J., Rutter, S. M., Penning, P. D., Yarrow, N. H., Atkinson, L. D. and Champion, R. A. 1998. Matching grass supply to grazing patterns for dairy cows under strip-grazing management. Proceedings of the British Society of Animal Science Winter Meeting, Scarborough, UK, 23-25 March 1998. BSAS, Penicuik, UK. pp. 49

Dietary preference of dairy cows grazing grass and clover

C2 - Non-edited contributions to conferences

Rutter, S. M., Orr, R. J., Penning, P. D., Yarrow, N. H., Champion, R. A. and Atkinson, L. D. 1998. Dietary preference of dairy cows grazing grass and clover. Proceedings of the British Society of Animal Science Winter Meeting, Scarborough, UK, 23-25 March 1998. BSAS, Penicuik, UK. pp. 51

Costs of locomotive and ingestive behaviour by sheep grazing grass or clover monocultures or mixtures of the two species

C1 - Edited contributions to conferences/learned societies

Champion, R. A., Rutter, S. M., Orr, R. J. and Penning, P. D. 1998. Costs of locomotive and ingestive behaviour by sheep grazing grass or clover monocultures or mixtures of the two species. Veissier, I. and Boissy, A. (ed.) Proceedings of the 32nd International Congress of the International Society of Applied Ethology (ISAE), Clermont-Ferrand, France, 21-25 July 1998.

Behavioural and physiological factors limiting intake by grazing ruminants

C1 - Edited contributions to conferences/learned societies

Penning, P. D., Gibb, M. J., Parsons, A. J., Orr, R. J. and Harvey, A. 1998. Behavioural and physiological factors limiting intake by grazing ruminants. Keane, M. G. and O'Riordan, E. (ed.) Extensification of Beef and Sheep Production on Grasslands, Proceedings of Pasture Ecology and Animal Intake Groups Joint Meeting, St Patrick's College, Drumcondra, Dublin, Ireland, 24-25 September 1996. pp. 10-20

Sward state and ingestive behaviour by Friesian dairy heifers under rotational grazing

C2 - Non-edited contributions to conferences

Orr, R. J., Rutter, S. M., Penning, P. D., Yarrow, N. H. and Champion, R. A. 1997. Sward state and ingestive behaviour by Friesian dairy heifers under rotational grazing. British Grassland Society (BGS) Fifth Research Conference, Seale Hayne Faculty of Agriculture Food & Land Use, University of Plymouth, Newton Abbot, Devon, 8-10 September 1997. British Grassland Society (BGS) Hurley. pp. 51-52

Rates of passage of digesta in sheep grazing grass or white clover

C2 - Non-edited contributions to conferences

Kelly, C. L., Penning, P. D., Orr, R. J. and Champion, R. A. 1997. Rates of passage of digesta in sheep grazing grass or white clover. British Grassland Society (BGS) Fifth Research Conference, Seale Hayne Faculty of Agriculture Food & Land Use, University of Plymouth, Newton Abbot, Devon, 8-10 September 1997. British Grassland Society (BGS) Hurley. pp. 181-182

Grazing behaviour of ruminants

G - Articles in popular magazines and other technical publications

Gibb, M. J. and Orr, R. J. 1997. Grazing behaviour of ruminants. IGER Innovations. 1, pp. 54-57.

Does supplementation with different feed types alter the preference by grazing ewes for grass and clover?

C2 - Non-edited contributions to conferences

Harvey, A., Orr, R. J. and Penning, P. D. 1997. Does supplementation with different feed types alter the preference by grazing ewes for grass and clover? British Grassland Society (BGS) Fifth Research Conference, Seale Hayne Faculty of Agriculture Food & Land Use, University of Plymouth, Newton Abbot, Devon, 8-10 September 1997. British Grassland Society (BGS) Hurley. pp. 177-178

Diurnal patterns of intake rate by sheep grazing monocultures of ryegrass or white clover

A - Papers appearing in refereed journals

Orr, R. J., Penning, P. D., Harvey, A. and Champion, R. A. 1997. Diurnal patterns of intake rate by sheep grazing monocultures of ryegrass or white clover. Applied Animal Behaviour Science. 52, pp. 65-77.

Distinguishing bites and chews in recordings of the grazing jaw movements of cattle

C2 - Non-edited contributions to conferences

Champion, R. A., Rutter, S. M. and Orr, R. J. 1997. Distinguishing bites and chews in recordings of the grazing jaw movements of cattle. British Grassland Society (BGS) Fifth Research Conference, Seale Hayne Faculty of Agriculture Food & Land Use, University of Plymouth, Newton Abbot, Devon, 8-10 September 1997. British Grassland Society (BGS) Hurley. pp. 171-172

Dietary preferences of domestic ruminants

C1 - Edited contributions to conferences/learned societies

Rutter, S. M., Penning, P. D., Parsons, A. J., Harvey, A. and Orr, R. J. 1997. Dietary preferences of domestic ruminants. Forbes, J. M., Lawrence, T. L. J., Rodway, R. G. and Varley, M. A. (ed.) Animal Choices, British Society of Animal Science Occasional Publication No 20. BSAS, Edinburgh. pp. 96-97

Diet preferences of adult sheep and goats grazing ryegrass and white clover

A - Papers appearing in refereed journals

Penning, P. D., Newman, J. A., Parsons, A. J., Harvey, A. and Orr, R. J. 1997. Diet preferences of adult sheep and goats grazing ryegrass and white clover. Small Ruminant Research. 24, pp. 175-184. https://doi.org/10.1051/animres:19950583

Bite dimensions and grazing severity for cattle and sheep

C2 - Non-edited contributions to conferences

Orr, R. J., Harvey, A., Kelly, C. L. and Penning, P. D. 1997. Bite dimensions and grazing severity for cattle and sheep. British Grassland Society (BGS) Fifth Research Conference, Seale Hayne Faculty of Agriculture Food & Land Use, University of Plymouth, Newton Abbot, Devon, 8-10 September 1997. British Grassland Society (BGS) Hurley. pp. 185-186

An algorithm for the automatic processing of recordings of foraging behaviour by cattle

C1 - Edited contributions to conferences/learned societies

Rutter, S. M., Penning, P. D., Rook, A. J., Orr, R. J., Gibb, M. J., Champion, R. A. and Huckle, C. A. 1997. An algorithm for the automatic processing of recordings of foraging behaviour by cattle. Hemsworth, P. and Spinka, M. (ed.) Proceedings of the 31st International Congress of the International Society for Applied Ethology, Prague, Czech Republic, 13-16 August 1997. pp. 216

Foraging behaviour of free ranging domestic ruminants

C1 - Edited contributions to conferences/learned societies

Rutter, S. M., Penning, P. D., Parsons, A. J., Harvey, A. and Orr, R. J. 1996. Foraging behaviour of free ranging domestic ruminants. Mini-symposium on diet selection in animals and man, Grassmere, Cumbria, 1-4 July 1996.

Why can't dairy heifers graze clover quicker than grass?

C1 - Edited contributions to conferences/learned societies

Rutter, S. M., Penning, P. D., Champion, R. A. and Orr, R. J. 1996. Why can't dairy heifers graze clover quicker than grass? Duncan, I. J. H., Widowski, T. M. and Haley, D. B. (ed.) Proceedings of the 30th International Congress of the International Society of Applied Ethology (ISAE), Col K L Campbell Centre for the Study of Animal Welfare, Guelph, Ontario, Canada, 14-17 August 1996. University of Guelph, Centre for the Study of Animal Welfare. pp. 134

The effects of spatial aggregation of grass and clover swards grazed by sheep on diet and sward composition

C2 - Non-edited contributions to conferences

Harvey, A. and Orr, R. J. 1996. The effects of spatial aggregation of grass and clover swards grazed by sheep on diet and sward composition. Proceedings of the British Society of Animal Science 112th Meeting, Scarborough, 18-20 March 1996.

The effects of grass nitrogen status on the preference by sheep grazing ryegrass and white clover

B - Book chapters etc edited externally

Harvey, A., Orr, R. J., Parsons, A. J., Penning, P. D. and Vincent, J. F. V. 1996. The effects of grass nitrogen status on the preference by sheep grazing ryegrass and white clover. in: Younie, D. (ed.) Legumes in Sustainable Farming Systems, British Grassland Society Occasional Symposium No 30 (Proceedings of joint conference of BGS and SFS Initiative, SAC, Craibstone, Aberdeen, 2-4 September 1996) British Grassland Society (BGS) Hurley. pp. 227-229

Grazing behaviour and herbage intake rate by Friesian dairy heifers grazing ryegrass or white clover

B - Book chapters etc edited externally

Orr, R. J., Rutter, S. M., Penning, P. D., Yarrow, N. H. and Champion, R. A. 1996. Grazing behaviour and herbage intake rate by Friesian dairy heifers grazing ryegrass or white clover. in: Younie, D. (ed.) Legumes in Sustainable Farming Systems, British Grassland Society Occasional Symposium No 30 (Proceedings of joint conference of BGS and SFS Initiative, SAC, Craibstone, Aberdeen, 2-4 September 1996) British Grassland Society (BGS) Hurley. pp. 221-224

Effects of continuous stocking with sheep or goats on sward composition and animal production from a grass and white clover pasture

A - Papers appearing in refereed journals

Penning, P. D., Johnson, R. H. and Orr, R. J. 1996. Effects of continuous stocking with sheep or goats on sward composition and animal production from a grass and white clover pasture. Small Ruminant Research. 21, pp. 19-29.

Dietary preference of sheep for grass and clover at contrasting sward surface heights

C2 - Non-edited contributions to conferences

Harvey, A. and Orr, R. J. 1996. Dietary preference of sheep for grass and clover at contrasting sward surface heights. Proceedings of the British Society of Animal Science 112th Meeting, Scarborough, 18-20 March 1996.

The role of learning and experience in the development of dietary choice by sheep and goats

C1 - Edited contributions to conferences/learned societies

Orr, R. J., Penning, P. D., Parsons, A. J., Harvey, A. and Newman, J. A. 1995. The role of learning and experience in the development of dietary choice by sheep and goats. Fourth International Symposium on the Nutrition of Herbivores, 11-15 September 1995, Clermont-Ferrand, France.

The preference of adult sheep and goats grazing ryegrass and white clover

C1 - Edited contributions to conferences/learned societies

Penning, P. D., Newman, J. A., Parsons, A. J., Harvey, A. and Orr, R. J. 1995. The preference of adult sheep and goats grazing ryegrass and white clover. Fourth International Symposium on the Nutrition of Herbivores, 11-15 September 1995, Clermont-Ferrand, France.

Intake and behaviour responses by sheep, in different physiological states, when grazing monocultures of grass or white clover

A - Papers appearing in refereed journals

Penning, P. D., Parsons, A. J., Orr, R. J., Harvey, A. and Champion, R. A. 1995. Intake and behaviour responses by sheep, in different physiological states, when grazing monocultures of grass or white clover. Applied Animal Behaviour Science. 45, pp. 63-78.

Herbage intake rates and grazing behaviour of sheep and goats grazing grass or white clover

C1 - Edited contributions to conferences/learned societies

Penning, P. D., Orr, R. J., Parsons, A. J., Harvey, A. and Newman, J. A. 1995. Herbage intake rates and grazing behaviour of sheep and goats grazing grass or white clover. Fourth International Symposium on the Nutrition of Herbivores, 11-15 September 1995, Clermont-Ferrand, France.

Herbage intake and N excretion by sheep grazing monocultures or a mixture of grass and white clover

A - Papers appearing in refereed journals

Orr, R. J., Penning, P. D., Parsons, A. J. and Champion, R. A. 1995. Herbage intake and N excretion by sheep grazing monocultures or a mixture of grass and white clover. Grass and Forage Science. 50 (1), pp. 31-40. https://doi.org/10.1111/j.1365-2494.1995.tb02291.x

Dietary preference of heifers for grass or clover, with and without romensin slow-release anti-bloat boluses

C1 - Edited contributions to conferences/learned societies

Penning, P. D., Parsons, A. J., Orr, R. J., Harvey, A. and Yarrow, N. H. 1995. Dietary preference of heifers for grass or clover, with and without romensin slow-release anti-bloat boluses. Proceedings of the 111th Meeting of the British Society of Animal Science, Scarborough, 20-22 March 1995.

Intake behaviour and production responses by sheep, in different physiological states, grazing monocultures of grass or white clover

C2 - Non-edited contributions to conferences

Penning, P. D., Parsons, A. J., Orr, R. J. and Harvey, A. 1994. Intake behaviour and production responses by sheep, in different physiological states, grazing monocultures of grass or white clover. Abstracts 45th Annual Meeting of the European Association for Animal Production, EAAP, Edinburgh, September 1994. pp. 281

The effect of concentrate level on the intakes of silages or hays by ewes in the first month of lactation

A - Papers appearing in refereed journals

Orr, R. J. and Treacher, T. T. 1994. The effect of concentrate level on the intakes of silages or hays by ewes in the first month of lactation. Animal Production. 58, pp. 109-116.

Intake and behaviour responses by sheep to changes in sward characteristics under rotational grazing

A - Papers appearing in refereed journals

Penning, P. D., Parsons, A. J., Orr, R. J. and Hooper, J. E. 1994. Intake and behaviour responses by sheep to changes in sward characteristics under rotational grazing. Grass and Forage Science. 49 (4), pp. 476-486. https://doi.org/10.1111/j.1365-2494.1994.tb02025.x

Fasting affects intake behaviour and diet preference of grazing sheep

A - Papers appearing in refereed journals

Newman, J. A., Penning, P. D., Parsons, A. J., Harvey, A. and Orr, R. J. 1994. Fasting affects intake behaviour and diet preference of grazing sheep. Animal Behaviour. 47, pp. 185-193. https://doi.org/10.1006/anbe.1994.1021

Diurnal patterns of ingestive behaviour by sheep

C2 - Non-edited contributions to conferences

Orr, R. J., Harvey, A. and Champion, R. A. 1994. Diurnal patterns of ingestive behaviour by sheep. Fourth British Grassland Society (BGS) Research Conference, 26-28 September 1994, Reading University.

Diet preference of sheep: effects of recent diet, physiological state and species abundance

A - Papers appearing in refereed journals

Parsons, A. J., Newman, J. A., Penning, P. D., Harvey, A. and Orr, R. J. 1994. Diet preference of sheep: effects of recent diet, physiological state and species abundance. Journal of Animal Ecology. 63, pp. 465-478. https://doi.org/10.2307/5563

The effects of group size on grazing time in sheep

A - Papers appearing in refereed journals

Penning, P. D., Parsons, A. J., Newman, J. A., Orr, R. J. and Harvey, A. 1993. The effects of group size on grazing time in sheep. Applied Animal Behaviour Science. 37, pp. 101-109. https://doi.org/10.1016/0168-1591(93)90103-V

Factors controlling meal length and herbage intake rate by grazing sheep

C1 - Edited contributions to conferences/learned societies

Penning, P. D., Orr, R. J., Parsons, A. J. and Rutter, S. M. 1993. Factors controlling meal length and herbage intake rate by grazing sheep. Proceedings of the Third International Congress on Applied Ethology, July 1993, Berlin, Germany. Humboldt University, Berlin. pp. 498-500

Effects of some factors on insensible weight loss in grazing sheep

C1 - Edited contributions to conferences/learned societies

Dumont, B., Penning, P. D., Orr, R. J. and D'Hour, P. 1993. Effects of some factors on insensible weight loss in grazing sheep. Proceedings of 8iemes Journees des Recherches sur l'Alimentation et la Nutrition des Herbivores, 24-25 March 1993, Paris, France.

Dietary preferences of sheep and goats

C2 - Non-edited contributions to conferences

Penning, P. D., Parsons, A. J., Harvey, A. and Orr, R. J. 1993. Dietary preferences of sheep and goats. Proceedings from Agricultural and Environmental Management "Pointers for Change", 8 April 1993, National Agricultural Conference, Stoneleigh, UK.

Patterns of ingestive behaviour of sheep continuously stocked on monocultures of ryegrass or white clover

A - Papers appearing in refereed journals

Penning, P. D., Rook, A. J. and Orr, R. J. 1991. Patterns of ingestive behaviour of sheep continuously stocked on monocultures of ryegrass or white clover. Applied Animal Behaviour Science. 31, pp. 237-250.

Micrometeorological studies of ammonia emission from sheep grazed swards

A - Papers appearing in refereed journals

Jarvis, S. C., Hatch, D. J., Orr, R. J. and Reynolds, S. E. 1991. Micrometeorological studies of ammonia emission from sheep grazed swards. The Journal of Agricultural Science. 117, pp. 101-109. https://doi.org/Reynolds(a1)DOI:https://doi.org/10.1017/S0021859600079028

Intake and behaviour responses by sheep to changes in sward characteristics under continuous stocking

A - Papers appearing in refereed journals

Penning, P. D., Parsons, A. J., Orr, R. J. and Treacher, T. T. 1991. Intake and behaviour responses by sheep to changes in sward characteristics under continuous stocking. Grass and Forage Science. 46, pp. 15-28.

The performance of ewes offered diets containing different proportions of perennial ryegrass and white clover silage in late pregnancy

A - Papers appearing in refereed journals

Orr, R. J. and Treacher, T. T. 1990. The performance of ewes offered diets containing different proportions of perennial ryegrass and white clover silage in late pregnancy. Animal Production. 51, pp. 143-153.

Sward composition, animal performance and the potential production of grass/white clover swards continuously stocked with sheep

A - Papers appearing in refereed journals

Orr, R. J., Parsons, A. J., Penning, P. D. and Treacher, T. T. 1990. Sward composition, animal performance and the potential production of grass/white clover swards continuously stocked with sheep. Grass and Forage Science. 45, pp. 325-336.

Intakes of silages, hays or straws by ewes in mid pregnancy

A - Papers appearing in refereed journals

Orr, R. J. and Treacher, T. T. 1990. Intakes of silages, hays or straws by ewes in mid pregnancy. Animal Production. 51, pp. 301-310.