World's Best Scientists 2026 revealed!

D-Index & Metrics

Animal Science and Veterinary

D-Index
53
Citations
9318
World Ranking
511
National Ranking
176

Richard A. Erdman 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 Richard A. Erdman 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: 110 publications — 33rd percentile

33% of scientists in this discipline score the same or lower.

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

Richard A. Erdman 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 Richard A. Erdman 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: 53 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:

  • Biochemistry
  • Internal medicine
  • Metabolism

Richard A. Erdman mainly focuses on Animal science, Lactation, Internal medicine, Endocrinology and Dairy cattle. His Animal science research is multidisciplinary, relying on both Urea and Rumen. As a member of one scientific family, Richard A. Erdman mostly works in the field of Lactation, focusing on Sunflower oil and, on occasion, Unsaturated fatty acid, Corn oil, Oleic acid and Fatty acid.

His Internal medicine study combines topics in areas such as Conjugated linoleic acid, ACACA, Gene expression and Cattle feeding. His work on Feed conversion ratio as part of general Endocrinology study is frequently linked to Regression analysis, therefore connecting diverse disciplines of science. His Dry matter research includes themes of Silage, Digestion and Latin square.

His most cited work include:

  • Using Milk Urea Nitrogen to Predict Nitrogen Excretion and Utilization Efficiency in Lactating Dairy Cows (341 citations)
  • Dietary Buffering Requirements of the Lactating Dairy Cow: A Review (298 citations)
  • Mammary Lipogenic Enzyme Activity, trans Fatty Acids and Conjugated Linoleic Acids Are Altered in Lactating Dairy Cows Fed a Milk Fat–Depressing Diet (236 citations)

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

His scientific interests lie mostly in Lactation, Food science, Animal science, Silage and Endocrinology. His Lactation study incorporates themes from Dairy cattle, Prolactin, photoperiodism and Fatty acid. His work carried out in the field of Food science brings together such families of science as Dry matter and Milk production.

Richard A. Erdman has included themes like Urea, Agronomy and Milk yield in his Animal science study. His research in Silage intersects with topics in Calcium, Choline and Forage. His work deals with themes such as Conjugated linoleic acid, Internal medicine, Casein and Bovine somatotropin, which intersect with Endocrinology.

He most often published in these fields:

  • Lactation (52.63%)
  • Food science (42.98%)
  • Animal science (46.49%)

What were the highlights of his more recent work (between 2010-2020)?

  • Dry matter (28.95%)
  • Food science (42.98%)
  • Lactation (52.63%)

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

Richard A. Erdman spends much of his time researching Dry matter, Food science, Lactation, Endocrinology and Internal medicine. His Dry matter research integrates issues from Feed conversion ratio, Milk yield, Milk production and Latin square. Richard A. Erdman focuses mostly in the field of Food science, narrowing it down to topics relating to Biochemistry and, in certain cases, Metabolomics.

The various areas that Richard A. Erdman examines in his Lactation study include ACACA and Animal science. His Animal science research is multidisciplinary, incorporating elements of Rumen and Pregnancy. He interconnects Conjugated linoleic acid and Gene expression in the investigation of issues within Endocrinology.

Between 2010 and 2020, his most popular works were:

  • Epigenetics: a possible role in acute and transgenerational regulation of dairy cow milk production. (61 citations)
  • Dietary conjugated linoleic Acid and hepatic steatosis: species-specific effects on liver and adipose lipid metabolism and gene expression. (53 citations)
  • Integrated metabolomic and transcriptome analyses reveal finishing forage affects metabolic pathways related to beef quality and animal welfare. (35 citations)

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

  • Biochemistry
  • Metabolism
  • Endocrinology

Richard A. Erdman mainly investigates Food science, Gene expression, Milk yield, Milk production and Simple linear model. His Food science study integrates concerns from other disciplines, such as Metabolome, Metabolomics and Polyunsaturated fatty acid. His Gene expression research includes elements of Genome, Epigenetics, Function and DNA sequencing.

His Milk yield research is multidisciplinary, incorporating perspectives in Feed conversion ratio, Digestion and Dry matter.

Best Publications

  • Using Milk Urea Nitrogen to Predict Nitrogen Excretion and Utilization Efficiency in Lactating Dairy Cows

    J.S. Jonker;R.A. Kohn;R.A. Erdman

  • Dietary Buffering Requirements of the Lactating Dairy Cow: A Review

    Richard A. Erdman

  • Mammary Lipogenic Enzyme Activity, trans Fatty Acids and Conjugated Linoleic Acids Are Altered in Lactating Dairy Cows Fed a Milk Fat–Depressing Diet

    Liliana S. Piperova;Beverly B. Teter;Israel Bruckental;Joseph Sampugna

  • Effect of dietary forage concentration and buffer addition on duodenal flow of trans-C18:1 fatty acids and milk fat production in dairy cows.

    K.F. Kalscheur;B.B. Teter;L.S. Piperova;R.A. Erdman

  • Peroxisome proliferator-activated receptor-γ activation and long-chain fatty acids alter lipogenic gene networks in bovine mammary epithelial cells to various extents

    A.K.G. Kadegowda;M. Bionaz;L.S. Piperova;R.A. Erdman

  • Fixed Yield Responses to Increased Milking Frequency

    Richard A. Erdman;Mark Varner

  • Duodenal and Milk Trans Octadecenoic Acid and Conjugated Linoleic Acid (CLA) Isomers Indicate that Postabsorptive Synthesis Is the Predominant Source of cis-9-Containing CLA in Lactating Dairy Cows

    Liliana S. Piperova;Joseph Sampugna;Beverly B. Teter;Kenneth F. Kalscheur

  • Milk urea nitrogen target concentrations for lactating dairy cows fed according to National Research Council recommendations.

    J.S. Jonker;R.A. Kohn;R.A. Erdman

  • Factors affecting body tissue mobilization in early lactation dairy cows. 1. Effect of dietary protein on mobilization of body fat and protein.

    Madhav V.S. Komaragiri;Richard A. Erdman

  • Milk yield and mammary growth effects due to increased milking frequency during early lactation.

    SA Hale;Anthony Capuco;RA Erdman

  • Dietary Sodium Bicarbonate and Magnesium Oxide for Early Postpartum Lactating Dairy Cows: Effects of Production, Acid-Based Metabolism, and Digestion

    R.A. Erdman;R.W. Hemken;L.S. Bull

  • Performance, ruminal fermentation, and site of starch digestion in early lactation cows fed corn grain harvested and processed differently.

    K.F. Knowlton;B.P. Glenn;R.A. Erdman

  • Effect of fat source on duodenal flow of trans-C18:1 fatty acids and milk fat production in dairy cows

    K.F. Kalscheur;B.B. Teter;L.S. Piperova;R.A. Erdman

  • Effect of rumen ammonia concentration on in situ rate and extent of digestion of feedstuffs.

    R.A. Erdman;G.H. Proctor;J.H. Vandersall

  • Milk fat yield and composition during abomasal infusion of cis or trans octadecenoates in Holstein cows.

    P.J. Gaynor;P.J. Gaynor;P.J. Gaynor;R.A. Erdman;R.A. Erdman;R.A. Erdman;B.B. Teter;B.B. Teter;B.B. Teter;J. Sampugna;J. Sampugna;J. Sampugna

  • Effect of dietary sodium bicarbonate and magnesium oxide on production and physiology in early lactation.

    R.A. Erdman;R.L. Botts;R.W. Hemken;L.S. Bull

  • Direct Analysis of Body Composition of Dairy Cows at Three Physiological Stages

    S.M. Andrew;D.R. Waldo;R.A. Erdman

  • Effects of Dietary Crude Protein Concentration and Degradability on Milk Production Responses of Early, Mid, and Late Lactation Dairy Cows

    K.F. Kalscheur;J.H. Vandersall;R.A. Erdman;R.A. Kohn

  • Effects of a Long Daily Photoperiod on Milk Yield and Circulating Concentrations of Insulin-Like Growth Factor-I

    GE Dahl;TH Elsasser;Anthony Capuco;RA Erdman

  • Glucose Metabolism and Milk Yield of Cows Infused Abomasally or Ruminally with Starch

    K.F. Knowlton;T.E. Dawson;B.P. Glenn;G.B. Huntington

  • Epigenetic regulation of milk production in dairy cows.

    Kuljeet Singh;Richard A. Erdman;Kara M. Swanson;Adrian J. Molenaar

  • Effect of stage of maturity of alfalfa and orchardgrass on in situ dry matter and crude protein degradability and amino acid composition

    Ahmed T. Balde;John H. Vandersall;Richard A. Erdman;James B. Reeves

  • Fixed Y leld Responses to Increased Milking Frequency

    Richard A. Erdman;Mark Varner

Frequent Co-Authors

R.W. Hemken
R.W. Hemken University of Kentucky
Geoffrey E. Dahl
Geoffrey E. Dahl University of Florida
Richard A. Kohn
Richard A. Kohn University of Maryland, College Park
U. Moallem
U. Moallem Agricultural Research Organization
Kenneth Kalscheur
Kenneth Kalscheur Agricultural Research Service
Juan J. Loor
Juan J. Loor University of Illinois at Urbana-Champaign
Christopher K. Reynolds
Christopher K. Reynolds University of Reading
Kyle R. McLeod
Kyle R. McLeod University of Kentucky
Massimo Bionaz
Massimo Bionaz Oregon State University

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Related Online Degrees & Career Pathways

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Additionally, careers addressing substance abuse and community health are vital. Individuals can become a drug counselor online through specialized programs that prepare them to support recovery and wellness, complementing work in veterinary social services or animal-assisted interventions.

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