J.A. Rooke

2.9k citations

58 papers · 2.2k · h-index 25

Impact in

Agronomy and Crop Science top 0.5%
- Ruminant Nutrition and Digestive Physiology
- Reproductive Physiology in Livestock
Animal Science and Zoology top 0.5%
- Animal Nutrition and Physiology
- Effects of Environmental Stressors on Livestock
- Rabbits: Nutrition, Reproduction, Health

Papers in

Agronomy and Crop Science 45
- Ruminant Nutrition and Digestive Physiology 37
- Reproductive Physiology in Livestock 15
Animal Science and Zoology 24
- Animal Nutrition and Physiology 17
- Effects of Environmental Stressors on Livestock 5

Co-authors: David G. Armstrong (18 shared papers)I.M. Bland (2 shared papers)Jean Le Dividich (2 shared papers)Patrick Herpin (1 shared paper)H. Galbraith (6 shared papers)S. Ghazi (2 shared papers)Catherine M Dwyer (5 shared papers)M.R. Bedford (1 shared paper)
Journals: The Journal of Agricultural Science (9 papers)Animal Feed Science and Technology (9 papers)animal (6 papers)Animal Science (5 papers)Grass and Forage Science (5 papers)
Partner nations: United Kingdom France United States

In The Last Decade

J.A. Rooke

57 papers receiving 2.0k citations

Peers

Replace E.G. O’Riordan with:

E.G. O’Riordan Ireland

Z. B. Johnson United States

Yves Beckers Belgium

G. E. Carstens United States

J. V. Nolan Australia

J. F. Aguilera Spain

S. C. Loerch United States

L.A. Sinclair United Kingdom

R. T. Hardin Canada

P. A. Ludden United States

J.A. Rooke relative to E.G. O’Riordan Ireland E.G. O’Riordan's profile →

Citations per field

00.5×1.5×2×2.4×

E.G. O’Riordan · 1×

×1.0 1k/1k

ACS

×0.7 938/1k

ASZ

×2.4 580/244

SA

×2.3 145/64

AS

×1.5 170/117

EC

Citations per year

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Countries citing papers authored by J.A. Rooke

Since Specialization

Citations

This map shows the geographic impact of J.A. Rooke's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by J.A. Rooke with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites J.A. Rooke more than expected).

Fields of papers citing papers by J.A. Rooke

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by J.A. Rooke. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by J.A. Rooke. The network helps show where J.A. Rooke may publish in the future.

Co-authors

The 25 scholars most cited alongside J.A. Rooke, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.

Border = papers with J.A. Rooke Line = papers co-authored together J.A. Rooke links everyone, so they are left out of the graph.

All Works

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20 of 20 papers shown

Showing the 20 most-cited of 58 papers — load more, or switch the sort, to bring in the rest.

#	Work
1	The acquisition of passive immunity in the new-born piglet Livestock Production Science ·J.A. Rooke, I.M. Bland	2002	267
2	Nutritional and immunological importance of colostrum for the new-born pig The Journal of Agricultural Science ·Jean Le Dividich, J.A. Rooke, Patrick Herpin	2005	260
3	Invited review: Improving neonatal survival in small ruminants: science into practice animal ·Catherine M Dwyer, J. Conington, Fabien Corbière, Ingrid Hunter Holmøy, Karianne Muri, Raymond Nowak, J.A. Rooke, J.E. Vipond, J.M. Gautier	2015	171
4	The potential for the improvement of the nutritive value of soya-bean meal by different proteases in broiler chicks and broiler cockerels British Poultry Science ·S. Ghazi, J.A. Rooke, H. Galbraith, M.R. Bedford	2002	113
5	Improvement of the nutritive value of soybean meal by protease and a-galactosidase treatment in broiler cockerels and broiler chicks British Poultry Science ·S. Ghazi, J.A. Rooke, H. Galbraith	2003	111
6	The effects of intraruminal infusions of urea, casein, glucose syrup and a mixture of casein and glucose syrup on nitrogen digestion in the rumen of cattle receiving grass-silage diets British Journal Of Nutrition ·J.A. Rooke, N. H. Lee, David G. Armstrong	1987	104
7	Effects of vitamin E and selenium on the performance and immune status of ewes and lambs The Journal of Agricultural Science ·J.A. Rooke, J. J. Robinson, John R. Arthur	2004	81
8	The chemical composition and nutritive value of grass silages prepared with no additive or with the application of additives containing either Lactobacillus plantarum or formic acid Grass and Forage Science ·J.A. Rooke, Faisal M Maya, John Arnold, David G. Armstrong	1988	67
9	The effect of inoculation with Lactobacillus plantarum on fermentation in laboratory silos of herbage low in water‐soluble carbohydrate Grass and Forage Science ·J.A. Rooke, ALISON J. BORMAN, David G. Armstrong	1990	52
10	Growth performance and gut function of piglets weaned at four weeks of age and fed protease-treated soya-bean meal Animal Feed Science and Technology ·J.A. Rooke, M. Slessor, H Fraser, Jill R. Thomson	1998	51
11	The importance of the form of nitrogen on microbial protein synthesis in the rumen of cattle receiving grass silage and continuous intrarumen infusions of sucrose British Journal Of Nutrition ·J.A. Rooke, David G. Armstrong	1989	50
12	Relationships between passive absorption of immunoglobulin G by the piglet and plasma concentrations of immunoglobulin G at weaning Livestock Production Science ·J.A. Rooke, C. Carranca, I.M. Bland, A. G. Sinclair, M. Ewen, V.C. Bland, S.A. Edwards	2003	48
13	BOARD INVITED REVIEW: The importance of the gestation period for welfare of calves: Maternal stressors and difficult births1 Journal of Animal Science ·Gareth Arnott, David J. Roberts, J.A. Rooke, Simon P. Turner, A.B. Lawrence, Kenny Rutherford	2012	46
14	Effect of biochar produced from different biomass sources and at different process temperatures on methane production and ammonia concentrations in vitro Animal Feed Science and Technology ·Irene Cabeza, A. Waterhouse, Saran Sohi, J.A. Rooke	2018	44
15	The digestion of untreated and formaldehyde-treated soya-bean and rapeseed meals by cattle fed a basal silage diet The Journal of Agricultural Science ·J.A. Rooke, I.M. Brookes, David G. Armstrong	1983	42
16	Methane emissions from beef and dairy cattle: Quantifying the effect of physiological stage and diet characteristics1 Journal of Animal Science ·Patrícia Ricci, J.A. Rooke, I. M. Nevison, A. Waterhouse	2013	41
17	The effect of dietary addition of nitrate or increase in lipid concentrations, alone or in combination, on performance and methane emissions of beef cattle animal ·Carol-Anne Duthie, Shane M. Troy, J. J. Hyslop, David Ross, R. Roehe, J.A. Rooke	2017	40
18	Evaluation of the laser methane detector to estimate methane emissions from ewes and steers1 Journal of Animal Science ·Patrícia Ricci, M.G.G. Chagunda, J.A. Rooke, J.G.M. Houdijk, Carol-Anne Duthie, J. Hyslop, R. Roehe, A. Waterhouse	2014	40
19	The effect of supplementation with Leucaena leucocephala and maize bran on voluntary food intake, digestibility, live weight and milk yield of Bos indicus × Bos taurus dairy cows and rumen fermentation in steers offered Pennisetum purpureum ad libitum in the semi-humid tropics Animal Science ·R. W. Muinga, J. H. Topps, J.A. Rooke, W.R. Thorpe	1995	36
20	The energetic efficiency of rumen microbial protein synthesis in cattle given silage-based diets Animal Feed Science and Technology ·J.A. Rooke, P. A. Brett, M. A. Overend, David G. Armstrong	1985	36

About J.A. Rooke

J.A. Rooke is a scholar working on Agronomy and Crop Science, Animal Science and Zoology, Genetics, Small Animals and Environmental Chemistry, having authored 58 papers that have together received 2.2k indexed citations. Recurring topics across this work include Ruminant Nutrition and Digestive Physiology (37 papers), Animal Nutrition and Physiology (17 papers), Reproductive Physiology in Livestock (15 papers), Genetic and phenotypic traits in livestock (14 papers), Turfgrass Adaptation and Management (7 papers), Animal health and immunology (6 papers), Agriculture Sustainability and Environmental Impact (5 papers) and Effects of Environmental Stressors on Livestock (5 papers). The work is most often cited by research in Agronomy and Crop Science (1.1k citations), Animal Science and Zoology (938 citations), Small Animals (580 citations), Aquatic Science (145 citations) and Environmental Chemistry (170 citations). J.A. Rooke has collaborated with scholars based in United Kingdom, France and United States. Frequent co-authors include David G. Armstrong, I.M. Bland, Jean Le Dividich, Patrick Herpin, H. Galbraith, S. Ghazi, Catherine M Dwyer, M.R. Bedford, John R. Arthur and A. Waterhouse. Their work appears in journals such as The Journal of Agricultural Science, Animal Feed Science and Technology, animal, Animal Science and Grass and Forage Science.

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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