World's Best Scientists 2026 revealed!

D-Index & Metrics

Animal Science and Veterinary

D-Index
54
Citations
12653
World Ranking
473
National Ranking
21

Theo J.G.M. Lam 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 Theo J.G.M. Lam 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: 209 publications — 76th percentile

76% of scientists in this discipline score the same or lower.

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

Theo J.G.M. Lam 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 Theo J.G.M. Lam 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: 54 D-Index — 85th percentile

85% 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:

  • Internal medicine
  • Bacteria
  • Statistics

His scientific interests lie mostly in Mastitis, Somatic cell count, Herd, Veterinary medicine and Dairy cattle. Mastitis is a primary field of his research addressed under Microbiology. Theo J.G.M. Lam has included themes like Animal husbandry, Agricultural science, Udder, Dairy herds and Milking in his Somatic cell count study.

Theo J.G.M. Lam has researched Herd in several fields, including Incidence and Immunology. His Veterinary medicine research is multidisciplinary, incorporating perspectives in Staphylococcus chromogenes, Staphylococcus epidermidis, Coagulase and Staphylococcus xylosus. His work in Dairy cattle is not limited to one particular discipline; it also encompasses Lactation.

His most cited work include:

  • Incidence of Clinical Mastitis in Dairy Herds Grouped in Three Categories by Bulk Milk Somatic Cell Counts (411 citations)
  • Estimation of Variance Components for Somatic Cell Counts to Determine Thresholds for Uninfected Quarters (315 citations)
  • Economic aspects of mastitis: New developments (264 citations)

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

His main research concerns Mastitis, Veterinary medicine, Somatic cell count, Udder and Herd. His research integrates issues of Milking, Incidence and Staphylococcus aureus in his study of Mastitis. His work in Veterinary medicine covers topics such as Dairy cattle which are related to areas like Antibiotic resistance and Animal husbandry.

His studies deal with areas such as Streptococcus uberis, Somatic cell, Biotechnology, Immunology and Internal medicine as well as Somatic cell count. He focuses mostly in the field of Udder, narrowing it down to matters related to Environmental health and, in some cases, Mastitis control. His Herd study contributes to a more complete understanding of Animal science.

He most often published in these fields:

  • Mastitis (57.42%)
  • Veterinary medicine (37.32%)
  • Somatic cell count (33.49%)

What were the highlights of his more recent work (between 2014-2021)?

  • Mastitis (57.42%)
  • Udder (30.14%)
  • Somatic cell count (33.49%)

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

Mastitis, Udder, Somatic cell count, Herd and Animal science are his primary areas of study. His research in Mastitis intersects with topics in Veterinary medicine, Antibiotic resistance, Antimicrobial use and Staphylococcus aureus. His work in Veterinary medicine tackles topics such as Dairy cattle which are related to areas like Biotechnology.

His Somatic cell count study combines topics from a wide range of disciplines, such as Odds ratio, Milking, Automatic milking and Antimicrobial. His Herd research incorporates themes from Statistics, Odds and Environmental health. He focuses mostly in the field of Animal science, narrowing it down to topics relating to Lactation and, in certain cases, Endocrinology, Internal medicine and Fertility.

Between 2014 and 2021, his most popular works were:

  • Invited review: Changes in the dairy industry affecting dairy cattle health and welfare. (213 citations)
  • Invited review: Determinants of farmers' adoption of management-based strategies for infectious disease prevention and control (93 citations)
  • Molecular relatedness of ESBL/AmpC-producing Escherichia coli from humans, animals, food and the environment : a pooled analysis (74 citations)

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

  • Internal medicine
  • Bacteria
  • Statistics

Theo J.G.M. Lam focuses on Mastitis, Herd, Dairy cattle, Veterinary medicine and Udder. His Mastitis study integrates concerns from other disciplines, such as Animal science and Agricultural science. His study in Herd is interdisciplinary in nature, drawing from both Ice calving and Escherichia coli.

Theo J.G.M. Lam interconnects Biosecurity, Biotechnology, Antibiotic resistance and Food safety in the investigation of issues within Dairy cattle. His Veterinary medicine study which covers Somatic cell count that intersects with Bulk tank, Milking, Subclinical mastitis, Antimicrobial and Descriptive statistics. His Udder research integrates issues from Total cost, Culling and Milk production.

Best Publications

  • Economic aspects of mastitis: New developments

    H. Hogeveen;K. Huijps;T.J.G.M. Lam

  • Incidence of Clinical Mastitis in Dairy Herds Grouped in Three Categories by Bulk Milk Somatic Cell Counts

    H.W. Barkema;Y.H. Schukken;T.J.G.M. Lam;M.L. Beiboer

  • Invited review: Changes in the dairy industry affecting dairy cattle health and welfare.

    H.W. Barkema;M.A.G. von Keyserlingk;J.P. Kastelic;T.J.G.M. Lam

  • Estimation of Variance Components for Somatic Cell Counts to Determine Thresholds for Uninfected Quarters

    A.J. Schepers;T.J.G.M. Lam;Y.H. Schukken;J.B.M. Wilmink

  • Costs of mastitis: facts and perception.

    Kirsten Huijps;Theo J. G. M. Lam;Henk Hogeveen

  • Management Practices Associated with the Incidence Rate of Clinical Mastitis

    H.W. Barkema;Y.H. Schukken;T.J.G.M. Lam;M.L. Beiboer

  • Prevalence, prediction and risk factors of enteropathogens in normal and non-normal faeces of young Dutch dairy calves.

    Chris J.M. Bartels;Menno Holzhauer;Ruurd Jorritsma;Wim A.J.M. Swart

  • Management practices associated with low, medium, and high somatic cell counts in bulk milk

    H.W. Barkema;Y.H. Schukken;T.J.G.M. Lam;M.L. Beiboer

  • Management style and its association with bulk milk somatic cell count and incidence rate of clinical mastitis.

    H.W. Barkema;J.D. Van der Ploeg;Y.H. Schukken;T.J.G.M. Lam

  • Invited review: Determinants of farmers' adoption of management-based strategies for infectious disease prevention and control

    Caroline Ritter;Jolanda Jansen;Steven Roche;David F. Kelton

  • Explaining mastitis incidence in Dutch dairy farming: The influence of farmers’ attitudes and behaviour

    J. Jansen;B.H.P. van den Borne;R.J. Renes;G. van Schaik

  • Production loss due to new subclinical mastitis in Dutch dairy cows estimated with a test-day model

    T.H.B. Halasa;T.H.B. Halasa;M. Nielen;A.P.W. de Roos;R. van Hoorne

  • Debunking the myth of the hard-to-reach farmer: effective communication on udder health.

    J. Jansen;C.D.M. Steuten;R.J. Renes;N. Aarts;N. Aarts

  • Motivation of Dairy Farmers to Improve Mastitis Management

    N.I. Valeeva;T.J.G.M. Lam;H. Hogeveen;H. Hogeveen

  • Molecular relatedness of ESBL/AmpC-producing Escherichia coli from humans, animals, food and the environment : a pooled analysis

    Alejandro Dorado-García;Joost H Smid;Wilfrid van Pelt;Marc J M Bonten

  • Estimation of Interdependence Among Quarters of the Bovine Udder with Subclinical Mastitis and Implications for Analysis

    H.W. Barkema;Y.H. Schukken;T.J.G.M. Lam;D.T. Galligan

  • Prevalence of Coxiella burnetii infection in Dutch dairy herds based on testing bulk tank milk and individual samples by PCR and ELISA

    J. Muskens;E. van Engelen;C. van Maanen;C. Bartels

  • Quarter-milk somatic cell count at calving and at the first six milkings after calving.

    H.W Barkema;H.A Deluyker;Y.H Schukken;T.J.G.M Lam

  • Field comparison of real-time polymerase chain reaction and bacterial culture for identification of bovine mastitis bacteria.

    M.T. Koskinen;G.J. Wellenberg;O.C. Sampimon;J. Holopainen

  • Recurrent clinical mastitis caused by Escherichia coli in dairy cows.

    D. Döpfer;H.W. Barkema;T.J.G.M. Lam;Y.H. Schukken

  • Social influences on the duration of antibiotic treatment of clinical mastitis in dairy cows

    J.M. Swinkels;A. Hilkens;V. Zoche-Golob;V. Krömker

  • Prevalence of intramammary infection in Dutch dairy herds

    Otlis Sampimon;Herman Barkema;Inge Berends;Jan Sol

  • Failure and preventive costs of mastitis on Dutch dairy farms.

    Felix J.S. van Soest;Inge M.G.A. Santman-Berends;Theo J.G.M. Lam;Henk Hogeveen;Henk Hogeveen

  • Prevalence and risk factors for extended-spectrum β-lactamase- and AmpC-producing Escherichia coli in dairy farms.

    M.A. Gonggrijp;I.M.G.A. Santman-Berends;A.E. Heuvelink;G.J. Buter

  • Evaluation of two communication strategies to improve udder health management

    J. Jansen;R.J. Renes;T.J.G.M. Lam

  • Characterization of methicillin-resistant Staphylococcus aureus CC398 obtained from humans and animals on dairy farms.

    Andrea T Fessler;Richard G M Olde Riekerink;Anja Rothkamp;Kristina Kadlec

  • The role of communication in improving udder health

    Jolanda Jansen;Theo J.G.M. Lam

  • An observational study of Eimeria species in housed cattle on Dutch dairy farms

    A.W.C.A. Cornelissen;R. Verstegen;H. van den Brand;N.M. Perie

  • Effect of different scenarios for selective dry-cow therapy on udder health, antimicrobial usage, and economics.

    C.G.M. Scherpenzeel;I.E.M. den Uijl;G. van Schaik;R.G.M.Olde Riekerink

  • Identification of Escherichia coli strains from cows with clinical mastitis by serotyping and DNA polymorphism patterns with REP and ERIC primers.

    L. J. A. Lipman;A. De Nijs;T. J. G. M. Lam;W. Gaastra

Frequent Co-Authors

Henk Hogeveen
Henk Hogeveen Wageningen University & Research
Ynte H. Schukken
Ynte H. Schukken Wageningen University & Research
G. van Schaik
G. van Schaik Utrecht University
Herman W. Barkema
Herman W. Barkema University of Calgary
I.M.G.A. Santman-Berends
I.M.G.A. Santman-Berends De Gezondheidsdienst voor Dieren
Mirjam Nielen
Mirjam Nielen Utrecht University
Klaas Frankena
Klaas Frankena Wageningen University & Research
Ruth N. Zadoks
Ruth N. Zadoks University of Sydney
Dik Mevius
Dik Mevius Utrecht University
M. Eysker
M. Eysker Utrecht University

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Related Online Degrees & Career Pathways

Exploring a degree in Animal Science or Veterinary studies opens doors to diverse careers working with animals. For those interested in expanding their knowledge beyond traditional veterinary roles, there are numerous options that integrate animal care with science, health, and behavior. You can discover many promising careers with animals that highlight a range of specializations and industries.

Additionally, students keen on the intersection of health, fitness, and science may consider online programs such as an online sports science degree. These programs provide flexible learning options and prepare graduates for roles in athletic training, coaching, or fitness management, complementing the study of animal physiology and welfare.

For those aiming to take on leadership roles in sports and fitness organizations, understanding what does an athletic director do provides insight into managing teams, facilities, and programs, blending management skills with a passion for sports and health.

Moreover, degrees related to behavioral analysis, such as the bcba degree, offer career pathways in behavior therapy, including work with animals or humans. This expands opportunities for those interested in applied behavior analysis beyond veterinary science.

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