Robert J Orr
Robert J Orr
Rothamsed Research, North Wyke
Verified email at rothamsted.ac.uk - Homepage
TitleCited byYear
Diet preference of sheep: effects of recent diet, physiological state and species abundance
AJ Parsons, JA Newman, PD Penning, A Harvey, RJ Orr
Journal of animal ecology, 465-478, 1994
3561994
Intake and behaviour responses by sheep to changes in sward characteristics under continuous stocking
PD Penning, AJ Parsons, RJ Orr, TT Treacher
Grass and Forage Science 46, 15-28, 1991
2581991
Fasting affects intake behaviour and diet preference of grazing sheep
JA Newman, PD Penning, AJ Parsons, A Harvey, RJ Orr
Animal Behaviour 47, 185-193, 1994
1591994
Patterns of ingestive behaviour of sheep continuously stocked on monocultures of ryegrass or white clover
PD Penning, AJ Rook, RJ Orr
Applied Animal Behaviour Science 31, 237-250, 1991
1571991
The effects of group size on grazing time in sheep
PD Penning, AJ Parsons, JA Newman, RJ Orr, A Harvey
Applied Animal Behaviour Science 37, 101-109, 1993
1411993
Intake and behaviour responses by sheep to changes in sward characteristics under rotational grazing
PD Penning, AJ Parsons, RJ Orr, GE Hooper
Grass and Forage Science 49, 476-486, 1994
1381994
Uptake, cycling and fate of nitrogen in grass-clover swards continuously grazed by sheep
AJ Parsons, RJ Orr, PD Penning, DR Lockyer, JC Ryden
Journal of Agricultural Science, Cambridge 116, 47-61, 1991
1381991
Matching grass supply to grazing patterns for dairy cows
RJ Orr, SM Rutter, PD Penning, AJ Rook
Grass and Forage Science 56, 352-361, 2001
1362001
Diurnal patterns of intake rate by sheep grazing monocultures of ryegrass or white clover
RJ Orr, PD Penning, A Harvey, RA Champion
Applied Animal Behaviour Science 52, 65-77, 1997
1211997
Intake and behaviour responses by sheep, in different physiological states, when grazing monocultures of grass or white clover
PD Penning, AJ Parsons, RJ Orr, A Harvey, RA Champion
Applied Animal Behaviour Science 45, 63-78, 1995
1121995
Sward composition, animal performance and the potential production of grass/white clover swards continuously stocked with sheep
RJ Orr, AJ Parsons, PD Penning, TT Treacher
Grass and Forage Science 45, 325-336, 1990
1121990
Dietary preference of dairy cows grazing ryegrass and white clover
SM Rutter, RJ Orr, NH Yarrow, RA Champion
Journal of Dairy Science 87, 1317-1324, 2004
942004
The effect of the spatial scale of heterogeneity of two herbage species on the grazing behaviour of lactating sheep
RA Champion, RJ Orr, PD Penning, SM Rutter
Applied Animal Behaviour Science 88, 61-76, 2004
752004
Ingestive behaviour of heifers grazing monocultures of ryegrass or white clover
SM Rutter, RJ Orr, PD Penning, NH Yarrow, RA Champion
Applied Animal Behaviour Science 76, 1-9, 2002
592002
Seasonal patterns of grass production under cutting or continuous stocking managements
RJ Orr, AJ Parsons, TT Treacher, PD Penning
Grass and Forage Science 43, 199-207, 1988
591988
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
RJ Orr, SM Rutter, NH Yarrow, RA Champion, AJ Rook
Applied Animal Behaviour Science 87, 205-222, 2004
572004
Diet preferences of adult sheep and goats grazing ryegrass and white clover
PD Penning, JA Newman, AJ Parsons, A Harvey, RJ Orr
Small Ruminant Research 24, 175-184, 1997
551997
Effect of long‐term changes in relative resource availability on dietary preference of grazing sheep for perennial ryegrass and white clover
AJ Rook, A Harvey, AJ Parsons, PD Penning, RJ Orr
Grass and Forage Science 57, 54-60, 2002
482002
Bite dimensions and grazing movements by sheep and cattle grazing homogeneous perennial ryegrass swards
AJ Rook, A Harvey, AJ Parsons, RJ Orr, SM Rutter
Applied Animal Behaviour Science 88, 227-242, 2004
462004
Responses of lactating ewes, offered fresh herbage indoors and when grazing, to supplements containing differing protein concentrations
PD Penning, RJ Orr, TT Treacher
Animal Production 46, 403-415, 1988
461988
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