World's Best Scientists 2026 revealed!

D-Index & Metrics

Animal Science and Veterinary

D-Index
38
Citations
4800
World Ranking
1427
National Ranking
123

Bert J. Tolkamp publication distribution in Animal Science and Veterinary in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Animal Science and Veterinary in 2026. The highlighted bar marks where Bert J. Tolkamp sits on this spectrum.

29–33 publications: 1 scientists 34–38 publications: 6 scientists 39–43 publications: 17 scientists 44–48 publications: 23 scientists 49–53 publications: 28 scientists 54–58 publications: 44 scientists 59–63 publications: 66 scientists 64–68 publications: 75 scientists 69–73 publications: 71 scientists 74–78 publications: 85 scientists 79–83 publications: 108 scientists 84–88 publications: 105 scientists 89–93 publications: 84 scientists 94–98 publications: 103 scientists 99–103 publications: 97 scientists 104–108 publications: 95 scientists 109–113 publications: 89 scientists 114–118 publications: 88 scientists 119–123 publications: 109 scientists 124–128 publications: 93 scientists 129–133 publications: 89 scientists 134–138 publications: 95 scientists 139–143 publications: 92 scientists 144–148 publications: 80 scientists 149–153 publications: 75 scientists 154–158 publications: 74 scientists 159–163 publications: 67 scientists 164–168 publications: 53 scientists 169–173 publications: 62 scientists 174–178 publications: 63 scientists 179–183 publications: 50 scientists 184–188 publications: 55 scientists 189–193 publications: 50 scientists 194–198 publications: 27 scientists 199–203 publications: 44 scientists 204–208 publications: 31 scientists 209–213 publications: 28 scientists 214–218 publications: 38 scientists 219–223 publications: 33 scientists 224–228 publications: 36 scientists 229–233 publications: 29 scientists 234–238 publications: 35 scientists 239–243 publications: 23 scientists 244–248 publications: 24 scientists 249–253 publications: 29 scientists 254–258 publications: 28 scientists 259–263 publications: 21 scientists 264–268 publications: 25 scientists 269–273 publications: 11 scientists 274–278 publications: 18 scientists 279–283 publications: 13 scientists 284–288 publications: 18 scientists 289–293 publications: 10 scientists 294–298 publications: 12 scientists 299–303 publications: 11 scientists 304–308 publications: 15 scientists 309–313 publications: 14 scientists 314–318 publications: 14 scientists 319–323 publications: 8 scientists 324–328 publications: 8 scientists 329–333 publications: 13 scientists 334–338 publications: 14 scientists 339–343 publications: 13 scientists 344–348 publications: 10 scientists 349–353 publications: 11 scientists 354–358 publications: 5 scientists 359–363 publications: 8 scientists 364–368 publications: 8 scientists 369–373 publications: 6 scientists 374–378 publications: 7 scientists 379–383 publications: 8 scientists 384–388 publications: 3 scientists 389–393 publications: 4 scientists 394–398 publications: 5 scientists 399–403 publications: 8 scientists 404–408 publications: 5 scientists 409–413 publications: 4 scientists 414–418 publications: 3 scientists 419–423 publications: 8 scientists 424–428 publications: 5 scientists 429–433 publications: 3 scientists 434–438 publications: 5 scientists 439–441 publications: 5 scientists 442+ publications: 99 scientists
29 publications 442+

This scientist: 102 publications — 28th percentile

28% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 442 publications or more.

Bert J. Tolkamp D-index placement in Animal Science and Veterinary in 2026

The chart shows the D-index (discipline H-index) distribution of Animal Science and Veterinary scientists ranked by Research.com in 2026. The highlighted bar marks where Bert J. Tolkamp sits on this spectrum.

20 D-Index: 5 scientists 21 D-Index: 22 scientists 22 D-Index: 31 scientists 23 D-Index: 44 scientists 24 D-Index: 53 scientists 25 D-Index: 66 scientists 26 D-Index: 80 scientists 27 D-Index: 101 scientists 28 D-Index: 106 scientists 29 D-Index: 116 scientists 30 D-Index: 154 scientists 31 D-Index: 158 scientists 32 D-Index: 143 scientists 33 D-Index: 137 scientists 34 D-Index: 126 scientists 35 D-Index: 134 scientists 36 D-Index: 112 scientists 37 D-Index: 115 scientists 38 D-Index: 105 scientists 39 D-Index: 111 scientists 40 D-Index: 107 scientists 41 D-Index: 87 scientists 42 D-Index: 74 scientists 43 D-Index: 62 scientists 44 D-Index: 61 scientists 45 D-Index: 41 scientists 46 D-Index: 51 scientists 47 D-Index: 43 scientists 48 D-Index: 28 scientists 49 D-Index: 47 scientists 50 D-Index: 40 scientists 51 D-Index: 34 scientists 52 D-Index: 33 scientists 53 D-Index: 43 scientists 54 D-Index: 16 scientists 55 D-Index: 32 scientists 56 D-Index: 21 scientists 57 D-Index: 18 scientists 58 D-Index: 28 scientists 59 D-Index: 33 scientists 60 D-Index: 17 scientists 61 D-Index: 21 scientists 62 D-Index: 18 scientists 63 D-Index: 21 scientists 64 D-Index: 9 scientists 65 D-Index: 20 scientists 66 D-Index: 11 scientists 67 D-Index: 16 scientists 68 D-Index: 12 scientists 69 D-Index: 17 scientists 70 D-Index: 13 scientists 71 D-Index: 15 scientists 72 D-Index: 11 scientists 73 D-Index: 11 scientists 74 D-Index: 14 scientists 75 D-Index: 5 scientists 76 D-Index: 6 scientists 77+ D-Index: 100 scientists
20 D-Index 77+

This scientist: 38 D-Index — 57th percentile

57% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 77 D-Index or more.

Overview

What is he best known for?

The fields of study he is best known for:

  • Ecology
  • Internal medicine
  • Statistics

Bert J. Tolkamp spends much of his time researching Statistics, Food science, Animal science, Meal and Food intake. His study in the field of Frequency distribution also crosses realms of Interval and General validity. He has researched Food science in several fields, including Organic matter, Nutrient and Animal nutrition, Monogastric.

His study looks at the intersection of Animal science and topics like Basal metabolic rate with Nutrient intake. His Meal research incorporates themes from Feeding behavior, Low protein, High protein and Animal feed. The various areas that Bert J. Tolkamp examines in his Food intake study include Host and Immune system.

His most cited work include:

  • Changes in feeding behavior as possible indicators for the automatic monitoring of health disorders in dairy cows. (205 citations)
  • Towards a functional explanation for the occurrence of anorexia during parasitic infections (187 citations)
  • Toward a new theory of feed intake regulation in ruminants 1. Causes of differences in voluntary feed intake: critique of current views. (121 citations)

What are the main themes of his work throughout his whole career to date?

Animal science, Broiler, Food intake, Food science and Feeding behavior are his primary areas of study. His Animal science study combines topics in areas such as Meal, Endocrinology, Animal-assisted therapy and Weight gain. The Broiler study combines topics in areas such as Pecking order, Appetite and Animal welfare.

His Food intake research is multidisciplinary, incorporating elements of Agriculture, Feeding patterns and Live weight. In the field of Food science, his study on Animal feed and Digestion overlaps with subjects such as Closed economy and Conditioned place preference. His studies in Net energy integrate themes in fields like Feed consumption, Biotechnology and Nutrient.

He most often published in these fields:

  • Animal science (48.19%)
  • Broiler (21.69%)
  • Food intake (20.48%)

What were the highlights of his more recent work (between 2011-2018)?

  • Animal science (48.19%)
  • Broiler (21.69%)
  • Veterinary medicine (9.64%)

In recent papers he was focusing on the following fields of study:

Bert J. Tolkamp mainly focuses on Animal science, Broiler, Veterinary medicine, Animal welfare and Parasitism. His Animal science study incorporates themes from Meal, Ice calving and Milk yield. He combines subjects such as Feces, Animal-assisted therapy, Human animal bond and Ostertagia ostertagi with his study of Veterinary medicine.

His Animal welfare research integrates issues from Food science, Appetite and Environmental health. His Food science research includes elements of Water intake, Livestock and Obesity. His Parasitism study combines topics from a wide range of disciplines, such as Body weight, Methane production, Anthelmintic and After treatment.

Between 2011 and 2018, his most popular works were:

  • Hunger and thirst (29 citations)
  • Do the changes in the behaviours of cattle during parasitism with Ostertagia ostertagi have a potential diagnostic value (16 citations)
  • Conditioned place preference or aversion as animal welfare assessment tools: Limitations in their application (15 citations)

In his most recent research, the most cited papers focused on:

  • Ecology
  • Internal medicine
  • Statistics

Bert J. Tolkamp focuses on Veterinary medicine, Animal science, Parasitism, Anthelmintic and Ostertagia ostertagi. The study incorporates disciplines such as HUBzero, Human animal bond and Combined treatment in addition to Veterinary medicine. His biological study spans a wide range of topics, including Rest period and Lactation.

His Parasitism research is multidisciplinary, incorporating perspectives in Body weight, After treatment and Feces.

Best Publications

  • Changes in feeding behavior as possible indicators for the automatic monitoring of health disorders in dairy cows.

    L.A. González;L.A. González;B.J. Tolkamp;M.P. Coffey;A. Ferret

  • Towards a functional explanation for the occurrence of anorexia during parasitic infections

    I. Kyriazakis;B.J. Tolkamp;M.R. Hutchings

  • 'Freedom from hunger' and preventing obesity: the animal welfare implications of reducing food quantity or quality

    Richard B. D'Eath;Bert J. Tolkamp;Ilias Kyriazakis;Alistair B. Lawrence

  • Toward a new theory of feed intake regulation in ruminants 1. Causes of differences in voluntary feed intake: critique of current views.

    J.J.M.H. Ketelaars;B.J. Tolkamp

  • Satiety splits feeding behaviour into bouts

    B J Tolkamp;D J Allcroft;Elizabeth Austin;B L Nielsen

  • To split behaviour into bouts, log-transform the intervals.

    Bert J. Tolkamp;Ilias Kyriazakis

  • The biologically relevant unit for the analysis of short-term feeding behavior of dairy cows.

    B.J. Tolkamp;D.P.N. Schweitzer;D.P.N. Schweitzer;I. Kyriazakis

  • The use of Mixed Distribution Models to Determine Bout Criteria for Analysis of Animal Behaviour

    M.P. Yeates;B.J. Tolkamp;D.J. Allcroft;I. Kyriazakis

  • Toward a new theory of feed intake regulation in ruminants 2. Costs and benefits of feed consumption: an optimization approach

    B.J. Tolkamp;J.J.M.H. Ketelaars

  • Effects of qualitative feed restriction during rearing on the performance of broiler breeders during rearing and lay

    B. J. Tolkamp;V. Sandilands;I. Kyriazakis

  • The evolution of the control of food intake

    A. W. Illius;B. J. Tolkamp;J. Yearsley

  • Diet selection and animal state: an integrative framework.

    Ilias Kyriazakis;Bert J. Tolkamp;Gerry Emmans

  • Toward a new theory of feed intake regulation in ruminants

    J.J.M.H. Ketelaars;B.J. Tolkamp

  • Oxygen efficiency and the control of energy flow in animals and humans

    Jjmh Ketelaars;BJ Tolkamp

  • Behaviour and welfare of broiler breeders fed qualitatively restricted diets during rearing: Are there viable alternatives to quantitative restriction?

    V. Sandilands;B.J. Tolkamp;C.J. Savory;I. Kyriazakis

  • Are cows more likely to lie down the longer they stand

    Bert J. Tolkamp;Marie J. Haskell;Fritha M. Langford;David J. Roberts

  • Behaviour of food restricted broilers during rearing and lay--effects of an alternative feeding method.

    Victoria Sandilands;Bert J Tolkamp;Ilias Kyriazakis

  • Toward a new theory of feed intake regulation in ruminants 3. Optimum feed intake: in search of a physiological background.

    J.J.M.H. Ketelaars;B.J. Tolkamp

  • Theoretical developments in the study and prediction of food intake.

    Jonathan Yearsley;Bert J. Tolkamp;Andrew W. Illius

  • Effects of Feed Composition and Stage of Lactation on the Short-term Feeding Behavior of Dairy Cows

    N.C. Friggens;B.L. Nielsen;I. Kyriazakis;B.J. Tolkamp

  • Analysis of the feeding behavior of pigs using different models.

    Colin A. Morgan;Gerry C. Emmans;Bert J. Tolkamp;Ilias Kyriazakis

  • The temporal structure of feeding behavior.

    Bert Jan Tolkamp;David J Allcroft;Juan Pablo Barrio;Tobias A.G. Bley

Frequent Co-Authors

Ilias Kyriazakis
Ilias Kyriazakis Queen's University Belfast
Andrew W. Illius
Andrew W. Illius University of Edinburgh
John R. Speakman
John R. Speakman University of Aberdeen
Jos G. M. Houdijk
Jos G. M. Houdijk Scotland's Rural College
Richard B. D’Eath
Richard B. D’Eath Scotland's Rural College
Iain J. Gordon
Iain J. Gordon James Hutton Institute
Marie J. Haskell
Marie J. Haskell Scotland's Rural College
Michael R. Hutchings
Michael R. Hutchings Scotland's Rural College
Sandra A. Edwards
Sandra A. Edwards Newcastle University
Alistair Lawrence
Alistair Lawrence Scotland's Rural College

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Related Online Degrees & Career Pathways

Pursuing a degree in Animal Science or Veterinary fields opens up diverse opportunities aligned with science and health care. Many students also explore complementary online programs that enhance their expertise and broaden career prospects.

For those interested in physical health and rehabilitation related to animals and humans, exercise science degrees online offer a practical foundation. These programs emphasize anatomy, physiology, and biomechanics, which are valuable in veterinary physical therapy or animal rehabilitation roles.

Behavioral science is another relevant domain. Professionals aiming to work with animal behavior or training might consider programs from bacb accredited schools. These provide rigorous coursework and certifications in behavior analysis, applicable in clinical and research environments involving animals.

Understanding psychological frameworks can also benefit those pursuing animal welfare or veterinary social work careers. Exploring mental health education through nasp accredited school psychology programs or apa accredited psyd programs enhances skills in behavioral health and counseling, supporting holistic care approaches.

Selecting accredited and reputable online degrees ensures quality education and better career outcomes across these interconnected fields.

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