World's Best Scientists 2026 revealed!

D-Index & Metrics

Animal Science and Veterinary

D-Index
30
Citations
2571
World Ranking
2523
National Ranking
43

Tracy A. Clegg 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 Tracy A. Clegg 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: 72 publications — 10th percentile

10% of scientists in this discipline score the same or lower.

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

Tracy A. Clegg 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 Tracy A. Clegg 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: 30 D-Index — 25th percentile

25% of scientists in this discipline score the same or lower.

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

Overview

Tracy A. Clegg is affiliated with University College Dublin in Ireland. Their research spans several fields, primarily within Agricultural and Biological Sciences and Medicine. They have contributed specifically to subfields including Agronomy and Crop Science, Ecology, Evolution, Behavior and Systematics, and Infectious Diseases.

Their work includes a focus on topics related to Animal Disease Management and Epidemiology, Vector-Borne Animal Diseases, and Viral Gastroenteritis Research and Epidemiology.

One of the recent papers authored by Tracy A. Clegg is titled "Herd-level factors associated with detection of calves persistently infected with bovine viral diarrhoea virus (BVDV) in Irish cattle herds with negative herd status (NHS) during 2017", published in 2020 in the journal Preventive Veterinary Medicine. This publication has received citations, reflecting engagement from the scientific community.

The researcher has collaborated with several coauthors across their publications. Frequent coauthors include:

  • Damien Barrett
  • Guy McGrath
  • Maria Guelbenzu-Gonzalo
  • Pádraig O'Sullivan
  • Simon J. More

For publication venues, Tracy A. Clegg's work appears in the journal Preventive Veterinary Medicine, among others. This reflects a focus on veterinary and agricultural science journals that cover disease management in animal populations.

Best Publications

  • The impact of badger removal on the control of tuberculosis in cattle herds in Ireland.

    J.M. Griffin;D.H. Williams;G.E. Kelly;T.A. Clegg

  • Using latent class analysis to estimate the test characteristics of the γ-interferon test, the single intradermal comparative tuberculin test and a multiplex immunoassay under Irish conditions.

    Tracy A. Clegg;Anthony Duignan;Clare Whelan;Eamonn Gormley

  • Prevalence and distribution of paratuberculosis (Johne's disease) in cattle herds in Ireland

    M Good;T Clegg;H Sheridan;D Yearsely

  • A study of helminth parasites in culled cows from Ireland.

    T.M. Murphy;K.N. Fahy;A. McAuliffe;A.B. Forbes

  • Potential infection-control benefit for Ireland from pre-movement testing of cattle for tuberculosis.

    T.A. Clegg;S.J. More;I.M. Higgins;M. Good

  • Risk factors associated with increased mortality of farmed Pacific oysters in Ireland during 2011.

    Tracy A. Clegg;Teresa Morrissey;Fiona Geoghegan;S. Wayne Martin

  • Pathogens, patterns of pneumonia, and epidemiologic risk factors associated with respiratory disease in recently weaned cattle in Ireland.

    Gerard M. Murray;Simon J. More;Dónal Sammin;Mìcheàl J. Casey

  • Prevalence of Coxiella burnetii (Q fever) antibodies in bovine serum and bulk-milk samples

    E. D. Ryan;M. Kirby;D. M. Collins;R. Sayers

  • How many Eurasian badgers Meles meles L. are there in the Republic of Ireland

    D. P. Sleeman;J. Davenport;S. J. More;T. A. Clegg

  • Herd-level factors associated with the presence of bovine viral diarrhoea virus in herds participating in the voluntary phase of the Irish national eradication programme.

    D.A. Graham;T.A. Clegg;M. Lynch;S.J. More

  • The effect of varying levels of population control on the prevalence of tuberculosis in badgers in Ireland

    L.A.L. Corner;T.A. Clegg;S.J. More;D.H. Williams

  • The use of national-level data to describe trends in intramammary antimicrobial usage on Irish dairy farms from 2003 to 2015.

    Simon J. More;Tracy A. Clegg;Finola McCoy

  • Longer-term risk of Mycobacterium bovis in Irish cattle following an inconclusive diagnosis to the single intradermal comparative tuberculin test

    T.A. Clegg;M. Good;A. Duignan;R. Doyle

  • Aspects of bovine herpesvirus-1 infection in dairy and beef herds in the Republic of Ireland

    DJ Bosco Cowley;Tracy A Clegg;Michael L Doherty;Simon J More

  • Future risk of bovine tuberculosis recurrence among higher risk herds in Ireland.

    T.A. Clegg;M. Good;S.J. More

  • Eradicating BVD, reviewing Irish programme data and model predictions to support prospective decision making.

    H.-H. Thulke;M. Lange;J.A. Tratalos;T.A. Clegg

  • Characteristics of Mycobacterium bovis infected herds tested with the interferon-gamma assay

    Tracy A. Clegg;Mairead B. Doyle;Eoin Ryan;Simon John More

  • Comparison of the Immulite and RIA assay methods for measuring peripheral blood progesterone levels in Greyhound bitches.

    A. Chapwanya;T. Clegg;P. Stanley;L. Vaughan

  • Comparison of bovine tuberculosis recurrence in Irish herds between 1998 and 2008.

    M.J. Gallagher;I.M. Higgins;T.A. Clegg;D.H. Williams

  • Identification of risk factors associated with disclosure of false positive bovine tuberculosis reactors using the gamma-interferon (IFNγ) assay.

    Eamonn Gormley;Mairead Doyle;Anthony Duignan;Margaret Good

  • Insights into udder health and intramammary antibiotic usage on Irish dairy farms during 2003-2010

    Simon John More;Tracy A. Clegg;Luke O'Grady

  • Cadmium and other heavy metal concentrations in bovine kidneys in the Republic of Ireland.

    Mary J. Canty;Aiden Scanlon;Daniel M. Collins;Guy McGrath

  • Quantifying the risk of spread of bovine viral diarrhoea virus (BVDV) between contiguous herds in Ireland.

    D.A. Graham;T.A. Clegg;H.-H. Thulke;P. O’Sullivan

  • Bovine viral diarrhoea virus seroprevalence and vaccination usage in dairy and beef herds in the Republic of Ireland

    D J Bosco Cowley;Tracy A Clegg;Michael L Doherty;Simon J More

  • An outbreak of equine infectious anaemia in Ireland during 2006: the modes of transmission and spread in the Kildare cluster.

    S. J. More;I. Aznar;T. Myers;D. P. Leadon

Frequent Co-Authors

Simon J. More
Simon J. More University College Dublin
David Graham
David Graham Animal Health Ireland
John D. Collins
John D. Collins University College Dublin
Eamonn Gormley
Eamonn Gormley University College Dublin
Bernadette Earley
Bernadette Earley Teagasc - The Irish Agriculture and Food Development Authority
Michael L. Doherty
Michael L. Doherty University College Dublin
Leigh A. L. Corner
Leigh A. L. Corner University College Dublin
John Davenport
John Davenport University College Cork
John F. Mee
John F. Mee Teagasc - The Irish Agriculture and Food Development Authority
S. Wayne Martin
S. Wayne Martin University of Guelph

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Related Online Degrees & Career Pathways

Pursuing a degree in Animal Science or Veterinary studies in the USA opens doors to a variety of related fields, many of which offer flexible online learning options. For those interested in the physical wellness of animals and humans alike, an exercise science degree online provides a foundation in biomechanics and health, supporting careers in rehabilitation and performance.

Behavioral analysis is another growing area linked to animal and human care. Programs focusing on becoming a Board Certified Behavior Analyst (BCBA) are available through the best schools for BCBA. These programs prepare students to work with behavioral interventions, applicable in both clinical and educational settings.

For those interested in the psychological aspects of animal-assisted therapy or educational psychology, exploring nasp accredited online school psychology programs offers pathways to careers supporting mental health in schools and communities.

Additionally, advanced clinical psychology degrees such as apa accredited psyd programs with no GRE requirements provide accessible routes to doctoral-level credentials. This can be beneficial for those interested in research or therapy combining animal science and psychological health.

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