World's Best Scientists 2026 revealed!

D-Index & Metrics

Animal Science and Veterinary

D-Index
39
Citations
6082
World Ranking
1271
National Ranking
375

Jason E. Lombard 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 Jason E. Lombard 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: 95 publications — 24th percentile

24% of scientists in this discipline score the same or lower.

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

Jason E. Lombard 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 Jason E. Lombard 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: 39 D-Index — 61st percentile

61% of scientists in this discipline score the same or lower.

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

Overview

Jason E. Lombard is affiliated with the Animal and Plant Health Inspection Service in the United States. Their research focuses on multiple aspects of animal health, epidemiology, and infectious diseases within agricultural and biological sciences.

The scientist has contributed to various fields of study including:

  • Medicine
  • Agricultural and Biological Sciences

Within these broader fields, their work delves into specific subfields such as:

  • Infectious Diseases
  • Epidemiology
  • Agronomy and Crop Science
  • Small Animals
  • Microbiology

Jason E. Lombard's main research topics encompass:

  • Viral gastroenteritis research and epidemiology
  • Animal Disease Management and Epidemiology
  • Animal health and immunology
  • Mycobacterium research and diagnosis
  • Microbial infections and disease research
  • Tuberculosis Research and Epidemiology
  • Influenza Virus Research Studies

Their recent publications include:

  • Consensus recommendations on calf- and herd-level passive immunity in dairy calves in the United States (2020, Journal of Dairy Science)
  • Human-to-Cattle Mycobacterium tuberculosis Complex Transmission in the United States (2021, Frontiers in Veterinary Science)

Although not listed as primary author, other influential works in related disciplines where co-authors or frequent collaborators are involved include studies published in Ecosphere, Molecular Biology and Evolution, and Foodborne Pathogens and Disease.

Jason E. Lombard frequently collaborates with several researchers, including:

  • Brian J. McCluskey
  • Chloe Stenkamp-Strahm
  • N.J. Urie
  • Blaine Melody
  • Franklyn B. Garry

They have published multiple papers in the following venues:

  • Journal of Dairy Science
  • bioRxiv (Cold Spring Harbor Laboratory)
  • Frontiers in Veterinary Science
  • Veterinary Clinics of North America Food Animal Practice
  • Ecosphere

The scope of the scientist's work covers important issues related to animal disease management, with particular emphasis on epidemiological studies and immunological aspects in dairy calves and cattle populations. This includes research on Mycobacterium tuberculosis transmission between humans and cattle, as well as passive immunity strategies at both the calf and herd level in dairy farming contexts.

Best Publications

  • Colostrum Management for Dairy Calves

    Sandra Godden

  • Impacts of dystocia on health and survival of dairy calves.

    J.E. Lombard;J.E. Lombard;F.B. Garry;S.M. Tomlinson;S.M. Tomlinson;L.P. Garber

  • Preweaned heifer management on US dairy operations: Part V. Factors associated with morbidity and mortality in preweaned dairy heifer calves

    N.J. Urie;J.E. Lombard;C.B. Shivley;C.A. Kopral

  • Prevalence of failure of passive transfer of immunity in newborn heifer calves and associated management practices on US dairy operations

    A.L. Beam;J.E. Lombard;C.A. Kopral;L.P. Garber

  • Consensus recommendations on calf- and herd-level passive immunity in dairy calves in the United States

    J. Lombard;N. Urie;F. Garry;S. Godden

  • Epidemiology and economics of paratuberculosis.

    Jason E. Lombard

  • Risk of removal and effects on milk production associated with paratuberculosis status in dairy cows

    Jason E. Lombard;Franklyn B. Garry;Brian J. McCluskey;Bruce A. Wagner

  • Herd-level prevalence of Mycobacterium avium subsp. paratuberculosis infection in United States dairy herds in 2007

    J.E. Lombard;I.A. Gardner;S.R. Jafarzadeh;C.P. Fossler

  • Preweaned heifer management on US dairy operations: Part II. Factors associated with colostrum quality and passive transfer status of dairy heifer calves.

    C.B. Shivley;J.E. Lombard;N.J. Urie;D.M. Haines

  • Associations between cow hygiene, hock injuries, and free stall usage on US dairy farms

    J.E. Lombard;C.B. Tucker;M.A.G. von Keyserlingk;C.A. Kopral

  • Prevalence of Salmonella enterica, Listeria monocytogenes, and Escherichia coli virulence factors in bulk tank milk and in-line filters from U.S. dairies.

    Jo Ann S. Van Kessel;Jeffrey S. Karns;Jason E. Lombard;Christine A. Kopral

  • Preweaned heifer management on US dairy operations: Part I. Descriptive characteristics of preweaned heifer raising practices.

    N.J. Urie;J.E. Lombard;C.B. Shivley;C.A. Kopral

  • Evaluation of Environmental Sampling and Culture to Determine Mycobacterium avium subspecies paratuberculosis Distribution and Herd Infection Status on US Dairy Operations

    J.E. Lombard;J.E. Lombard;B.A. Wagner;R.L. Smith;B.J. McCluskey

  • Zoonotic and genetically diverse subtypes of Blastocystis in US pre-weaned dairy heifer calves

    Jenny G Maloney;Jason E Lombard;Natalie J Urie;Chelsey B Shivley

  • Associations between housing and management practices and the prevalence of lameness, hock lesions, and thin cows on US dairy operations.

    A.E. Adams;A.E. Adams;J.E. Lombard;C.P. Fossler;I.N. Román-Muñiz

  • Evaluation of Factors Associated with Increased Dairy Cow Mortality on United States Dairy Operations

    C.S. McConnel;J.E. Lombard;J.E. Lombard;B.A. Wagner;F.B. Garry

  • Decision analysis model for paratuberculosis control in commercial dairy herds.

    Nathan C. Dorshorst;Michael T. Collins;Jason E. Lombard

  • Herd Management Practices and Their Association with Bulk Tank Somatic Cell Count on United States Dairy Operations

    J.R. Wenz;S.M. Jensen;J.E. Lombard;J.E. Lombard;B.A. Wagner

  • Short communication: Methicillin-resistant Staphylococcus aureus detection in US bulk tank milk

    J. E. Virgin;T. M. Van Slyke;J. E. Lombard;Ruth Zadoks

  • Genetic diversity and virulence profiles of Listeria monocytogenes recovered from bulk tank milk, milk filters, and milking equipment from dairies in the United States (2002 to 2014).

    Seon Woo Kim;Julie Haendiges;Eric N. Keller;Robert Myers

  • Comparison of milk and serum enzyme-linked immunosorbent assays for diagnosis of Mycobacterium avium subspecies paratuberculosis infection in dairy cattle.

    Jason E Lombard;Todd M Byrem;Bruce A Wagner;Brian J McCluskey

  • Consensus-based reporting standards for diagnostic test accuracy studies for paratuberculosis in ruminants

    Ian A. Gardner;Søren S. Nielsen;Richard J. Whittington;Michael T. Collins

  • The impact of movements and animal density on continental scale cattle disease outbreaks in the United States.

    Michael G. Buhnerkempe;Michael J. Tildesley;Tom Lindström;Daniel A. Grear

Frequent Co-Authors

Franklyn B. Garry
Franklyn B. Garry Colorado State University
Bruce A. Wagner
Bruce A. Wagner Animal and Plant Health Inspection Service
David A. Dargatz
David A. Dargatz Animal and Plant Health Inspection Service
Paula J. Fedorka-Cray
Paula J. Fedorka-Cray North Carolina State University
Ian A. Gardner
Ian A. Gardner University of Prince Edward Island
Christopher A. Wolf
Christopher A. Wolf Cornell University
J.S. Van Kessel
J.S. Van Kessel Agricultural Research Service
Sandra M Godden
Sandra M Godden University of Minnesota
M.A.G. von Keyserlingk
M.A.G. von Keyserlingk University of British Columbia
Daniel M. Weary
Daniel M. Weary University of British Columbia

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