World's Best Scientists 2026 revealed!
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Animal Science and Veterinary
USA
2023

D-Index & Metrics

Animal Science and Veterinary

D-Index
80
Citations
21688
World Ranking
79
National Ranking
27

James K. Drackley 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 James K. Drackley 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: 287 publications — 89th percentile

89% of scientists in this discipline score the same or lower.

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

James K. Drackley 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 James K. Drackley 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: 80 D-Index — 98th percentile

98% of scientists in this discipline score the same or lower.

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

Research.com Recognitions

  • 2023 - Research.com Animal Science and Veterinary in United States Leader Award
  • 2015 - American Dairy Science Association Fellowship Award
  • 2002 - American Feed Industry Association Award, American Dairy Science Association
  • 1997 - Cargill Animal Nutrition Young Scientist Award, American Dairy Science Association

Overview

What is he best known for?

The fields of study he is best known for:

  • Enzyme
  • Internal medicine
  • Gene

His primary areas of investigation include Internal medicine, Endocrinology, Lactation, Dairy cattle and NEFA. His work on Glycogen, Adipose tissue and Choline as part of general Internal medicine research is frequently linked to Ketosis, bridging the gap between disciplines. His work on Insulin as part of general Endocrinology study is frequently linked to Diet composition, bridging the gap between disciplines.

His Lactation study incorporates themes from Dry matter, Triglyceride, Carnitine, Lipid metabolism and Metabolism. His Dairy cattle study which covers Pregnancy that intersects with Metabolic disorder. His NEFA research is multidisciplinary, relying on both Cholesterol and Latin square.

His most cited work include:

  • Biology of dairy cows during the transition period : the final frontier? (1161 citations)
  • Adaptations of Glucose and Long-Chain Fatty Acid Metabolism in Liver of Dairy Cows during the Periparturient Period (451 citations)
  • The development, nutrition, and management of the young calf (304 citations)

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

James K. Drackley mainly investigates Endocrinology, Internal medicine, Lactation, Animal science and Dry matter. His work on Metabolism, NEFA, Insulin and Carnitine as part of general Endocrinology research is frequently linked to Ketosis, thereby connecting diverse disciplines of science. His Internal medicine study frequently links to related topics such as Gene expression.

The various areas that James K. Drackley examines in his Lactation study include Dairy cattle, Lipid metabolism and Lactose. In general Animal science, his work in Weaning is often linked to Colostrum linking many areas of study. His Dry matter course of study focuses on Food science and Fatty acid.

He most often published in these fields:

  • Endocrinology (41.70%)
  • Internal medicine (41.70%)
  • Lactation (31.58%)

What were the highlights of his more recent work (between 2013-2021)?

  • Animal science (30.77%)
  • Dry matter (26.72%)
  • Internal medicine (41.70%)

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

James K. Drackley mostly deals with Animal science, Dry matter, Internal medicine, Endocrinology and Lactation. His biological study spans a wide range of topics, including Rumen, Starter and Fatty acid. His research in Dry matter intersects with topics in Food science, Randomized block design, Total mixed ration, Feed conversion ratio and Forage.

James K. Drackley works mostly in the field of Internal medicine, limiting it down to topics relating to Gene expression and, in certain cases, Peroxisome proliferator-activated receptor. His work in the fields of Lipogenesis, Choline, Metabolism and Carbohydrate metabolism overlaps with other areas such as Insulin-like growth factor. His Ice calving and Somatic cell count study, which is part of a larger body of work in Lactation, is frequently linked to Heat index and Composition, bridging the gap between disciplines.

Between 2013 and 2021, his most popular works were:

  • Biomarkers of inflammation, metabolism, and oxidative stress in blood, liver, and milk reveal a better immunometabolic status in peripartal cows supplemented with Smartamine M or MetaSmart. (97 citations)
  • Better postpartal performance in dairy cows supplemented with rumen-protected methionine compared with choline during the peripartal period (80 citations)
  • Invited review: palmitic and stearic acid metabolism in lactating dairy cows. (73 citations)

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

  • Enzyme
  • Internal medicine
  • Gene

His scientific interests lie mostly in Lactation, Internal medicine, Endocrinology, Animal science and Dry matter. James K. Drackley works in the field of Lactation, namely Ice calving. The study of Internal medicine is intertwined with the study of Gene expression in a number of ways.

His study looks at the relationship between Animal science and topics such as Rumen, which overlap with Methionine and Lactobacillus. James K. Drackley has included themes like Randomized block design, Essential fatty acid, Forage and Weaning in his Dry matter study. His Randomized block design research includes elements of Dairy cattle and Micronutrient.

Best Publications

  • Biology of dairy cows during the transition period : the final frontier?

    James K. Drackley

  • Adaptations of Glucose and Long-Chain Fatty Acid Metabolism in Liver of Dairy Cows during the Periparturient Period

    James K. Drackley;Thomas R. Overton;G. Neil Douglas

  • The development, nutrition, and management of the young calf

    Carl L. Davis;James K. Drackley

  • Identification of a missense mutation in the bovine ABCG2 gene with a major effect on the QTL on chromosome 6 affecting milk yield and composition in Holstein cattle

    Miri Cohen-Zinder;Eyal Seroussi;Denis M. Larkin;Juan J. Loor

  • Physiological and pathological adaptations in dairy cows that may increase susceptibility to periparturient diseases and disorders

    James K. Drackley;Heather M. Dann;G. Neil Douglas;Nicole A. Janovick Guretzky

  • Nutrition-induced ketosis alters metabolic and signaling gene networks in liver of periparturient dairy cows

    Juan J. Loor;Robin E. Everts;Massimo Bionaz;Heather M. Dann

  • Calf nutrition from birth to breeding.

    James K. Drackley

  • Diets during far-off and close-up dry periods affect periparturient metabolism and lactation in multiparous cows.

    H.M. Dann;N.B. Litherland;J.P. Underwood;M. Bionaz

  • Effect of Dietary Lipid Source on Conjugated Linoleic Acid Concentrations in Milk Fat

    P. Y. Chouinard;L. Corneau;L. Corneau;W. R. Butler;Y. Chilliard

  • Nutrition during the dry period and hepatic lipid metabolism of periparturient dairy cows.

    D.E. Grum;J.K. Drackley;R.S. Younker;D.W. LaCount

  • Metabolic Changes in Blood and Liver During Development and Early Treatment of Experimental Fatty Liver and Ketosis in Cows

    J. J. Veenhuizen;James K Drackley;M. J. Richard;T. P. Sanderson

  • Prepartum dietary energy intake affects metabolism and health during the periparturient period in primiparous and multiparous Holstein cows.

    N.A. Janovick;Y.R. Boisclair;J.K. Drackley

  • Effects of yeast culture (Saccharomyces cerevisiae) on prepartum intake and postpartum intake and milk production of Jersey cows

    H.M. Dann;J.K. Drackley;G.C. McCoy;M.F. Hutjens

  • Growth and body composition of dairy calves fed milk replacers containing different amounts of protein at two feeding rates.

    K. S. Bartlett;F. K. McKeith;M. J. VandeHaar;G. E. Dahl

  • Temporal gene expression profiling of liver from periparturient dairy cows reveals complex adaptive mechanisms in hepatic function

    Juan J. Loor;Heather M. Dann;Robin E. Everts;Rosane Oliveira

  • Prepartal plane of nutrition, regardless of dietary energy source, affects periparturient metabolism and dry matter intake in Holstein cows.

    G.N. Douglas;T.R. Overton;H.G. Bateman;H.M. Dann

  • Growth, nutrient utilization, and body composition of dairy calves fed milk replacers containing different amounts of protein.

    R. M. Blome;J. K. Drackley;F. K. McKeith;M. F. Hutjens

  • Supplemental smartamine m or metasmart during the transition period benefits postpartal cow performance and blood neutrophil function

    J.S. Osorio;P. Ji;J.K. Drackley;D. Luchini

  • Plane of nutrition prepartum alters hepatic gene expression and function in dairy cows as assessed by longitudinal transcript and metabolic profiling.

    Juan J. Loor;Heather M. Dann;Nicole A. Janovick Guretzky;Robin E. Everts

  • Concentrations of conjugated linoleic acid (cis-9, trans-11-octadecadienoic acid) are not increased in tissue lipids of cattle fed a high-concentrate diet supplemented with soybean oil.

    A D Beaulieu;J K Drackley;N R Merchen

Frequent Co-Authors

Juan J. Loor
Juan J. Loor University of Illinois at Urbana-Champaign
J.H. Clark
J.H. Clark University of Illinois at Urbana-Champaign
Thomas R. Overton
Thomas R. Overton Cornell University
Erminio Trevisi
Erminio Trevisi Catholic University of the Sacred Heart
Harris A. Lewin
Harris A. Lewin University of California, Davis
Sandra L. Rodriguez-Zas
Sandra L. Rodriguez-Zas University of Illinois at Urbana-Champaign
Neal R Merchen
Neal R Merchen University of Illinois at Urbana-Champaign
Massimo Bionaz
Massimo Bionaz Oregon State University
Jack Odle
Jack Odle North Carolina State University
George C. Fahey
George C. Fahey University of Illinois at Urbana-Champaign

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