World's Best Scientists 2026 revealed!

D-Index & Metrics

Animal Science and Veterinary

D-Index
37
Citations
5369
World Ranking
1506
National Ranking
439

H.D. Norman 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 H.D. Norman 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: 169 publications — 64th percentile

64% of scientists in this discipline score the same or lower.

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

H.D. Norman 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 H.D. Norman 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: 37 D-Index — 54th percentile

54% of scientists in this discipline score the same or lower.

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

Overview

H.D. Norman is affiliated with the Agricultural Research Service in the United States, contributing significantly to the fields of Agricultural and Biological Sciences as well as Biochemistry, Genetics and Molecular Biology. Their research predominantly focuses on genetics, agronomy, animal science, and related subfields, reflecting a multidisciplinary approach within agricultural research.

Their work covers a variety of subfields including:

  • Genetics
  • Agronomy and Crop Science
  • Animal Science and Zoology
  • Plant Science
  • Small Animals

Norman has addressed several main topics in their publications, such as:

  • Genetic and phenotypic traits in livestock
  • Milk Quality and Mastitis in Dairy Cows
  • Reproductive Physiology in Livestock
  • Effects of Environmental Stressors on Livestock
  • Genetic Mapping and Diversity in Plants and Animals
  • Genetics and Plant Breeding
  • Animal Behavior and Welfare Studies

Their recent published papers include the following titles:

  • Changes in genetic trends in US dairy cattle since the implementation of genomic selection, 2022, Journal of Dairy Science
  • Investigating conception rate for beef service sires bred to dairy cows and heifers, 2020, Journal of Dairy Science
  • Symposium review: Development, implementation, and perspectives of health evaluations in the United States, 2020, Journal of Dairy Science
  • Daily milk yield correction factors: What are they?, 2022, JDS Communications
  • Genetic Evaluations of Stillbirth for Five United States Dairy Breeds: A Data-Resource Feasibility Study, 2022, Frontiers in Genetics

Their frequent publication venues demonstrate a focus on dairy science and genetics with contributions appearing in:

  • Journal of Dairy Science
  • JDS Communications
  • arXiv (Cornell University)
  • Frontiers in Genetics

Norman collaborates regularly with other researchers, notably:

  • João Walter Dürr
  • Javier Burchard
  • G.R. Wiggans
  • John B. Cole
  • Curtis P. Van Tassell

Best Publications

  • Development of a National Genetic Evaluation for Cow Fertility

    P.M. VanRaden;A.H. Sanders;M.E. Tooker;R.H. Miller

  • Invited Review: Culling: Nomenclature, Definitions, and Recommendations

    J. Fetrow;K.V. Nordlund;H.D. Norman

  • Reproductive status of Holstein and Jersey cows in the United States.

    H.D. Norman;J.R. Wright;S.M. Hubbard;R.H. Miller

  • Trends in calving ages and calving intervals for dairy cattle breeds in the United States.

    E. Hare;H.D. Norman;J.R. Wright

  • Genetic and environmental factors that affect gestation length in dairy cattle.

    H.D. Norman;J.R. Wright;M.T. Kuhn;S.M. Hubbard

  • Use of sexed semen and its effect on conception rate, calf sex, dystocia, and stillbirth of Holsteins in the United States.

    H.D. Norman;J.L. Hutchison;R.H. Miller

  • Survival Rates and Productive Herd Life of Dairy Cattle in the United States

    E. Hare;H.D. Norman;J.R. Wright

  • Use of residual feed intake in Holsteins during early lactation shows potential to improve feed efficiency through genetic selection.

    E. E. Connor;J. L. Hutchison;H. D. Norman;K. M. Olson

  • Short communication: genotype by environment interaction due to heat stress.

    J. Bohmanova;I. Misztal;S. Tsuruta;H.D. Norman

  • Herd and state means for somatic cell count from dairy herd improvement

    H.D. Norman;R.H. Miller;J.R. Wright;G.R. Wiggans

  • A 100-Year Review: Methods and impact of genetic selection in dairy cattle-From daughter-dam comparisons to deep learning algorithms.

    K.A. Weigel;P.M. VanRaden;H.D. Norman;H. Grosu

  • Changes in genetic trends in US dairy cattle since the implementation of genomic selection.

    Unknown

  • Analysis of copy number variations in Holstein cows identify potential mechanisms contributing to differences in residual feed intake.

    Yali Hou;Yali Hou;Derek M. Bickhart;Hoyoung Chung;Jana L. Hutchison

  • Death losses for lactating cows in herds enrolled in dairy herd improvement test plans.

    R.H. Miller;M.T. Kuhn;H.D. Norman;J.R. Wright

  • Relation of First Lactation Production and Conformation to Lifetime Performance and Profitability in Jerseys

    Unknown

  • Trends in Breeding Value and Production

    R.L. Powell;H.D. Norman;F.N. Dickinson

  • TRIENNIAL LACTATION SYMPOSIUM: Opportunities for improving milk production efficiency in dairy cattle,

    E. E. Connor;J. L. Hutchison;K. M. Olson;H. D. Norman

  • Phenotypic and genetic relationship between linear functional type traits and milk yield for five breeds.

    H.D. Norman;R.L. Powell;J.R. Wright;B.G. Cassell

  • Effects of length of dry period on yields of milk fat and protein, fertility and milk somatic cell score in the subsequent lactation of dairy cows

    Melvin T Kuhn;Jana L Hutchison;H Duane Norman

  • Type Appraisal: III. Relationships of First Lactation Production and Type Traits with Lifetime Performance

    Unknown

  • Voluntary Waiting Period and Adoption of Synchronized Breeding in Dairy Herd Improvement Herds

    R.H. Miller;H.D. Norman;M.T. Kuhn;J.S. Clay

  • Method R estimates of heritability for milk, fat, and protein yields of United States dairy cattle.

    C.P. van Tassell;G.R. Wiggans;H.D. Norman

  • Estimation of (Co)Variance Components for Jersey Type Traits Using a Repeatability Model

    Nicolas Gengler;G. R. Wiggans;J. R. Wright;H. D. Norman

  • Dry period length to maximize production across adjacent lactations and lifetime production.

    M.T. Kuhn;J.L. Hutchison;H.D. Norman

  • Modeling Nuisance Variables for Prediction of Service Sire Fertility

    M.T. Kuhn;J.L. Hutchison;H.D. Norman

  • Relationship of Test-Day Somatic Cell Score with Test-Day and Lactation Milk Yields

    R.H. Miller;H.D. Norman;G.R. Wiggans;J.R. Wright

  • Major Advances in Genetic Evaluation Techniques

    R.L. Powell;H.D. Norman

  • Dry period length in US Jerseys: characterization and effects on performance.

    M.T. Kuhn;J.L. Hutchison;H.D. Norman

Frequent Co-Authors

J.L. Hutchison
J.L. Hutchison US Department of Agriculture
Paul M. VanRaden
Paul M. VanRaden United States Department of Agriculture
Kent A. Weigel
Kent A. Weigel University of Wisconsin–Madison
Filippo Miglior
Filippo Miglior University of Guelph
Erin E. Connor
Erin E. Connor University of Delaware
Chad Daniel Dechow
Chad Daniel Dechow Pennsylvania State University
Nicolas Gengler
Nicolas Gengler Gembloux Agro-Bio Tech
Michael M Schutz
Michael M Schutz Purdue University West Lafayette
Jason E. Lombard
Jason E. Lombard Animal and Plant Health Inspection Service
R.E. Pearson
R.E. Pearson Virginia Tech

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