World's Best Scientists 2026 revealed!

D-Index & Metrics

Animal Science and Veterinary

D-Index
38
Citations
4470
World Ranking
1445
National Ranking
424

J. M. Powell 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 J. M. Powell 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: 78 publications — 13th percentile

13% of scientists in this discipline score the same or lower.

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

J. M. Powell 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 J. M. Powell 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: 38 D-Index — 57th percentile

57% of scientists in this discipline score the same or lower.

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

Overview

J. M. Powell is affiliated with the Agricultural Research Service in the United States. Their research primarily spans the fields of Agricultural and Biological Sciences and Environmental Science, with a significant focus on agronomy, crop science, and environmental impacts related to livestock and nutrient management.

The scientist's research topics cover several areas, including:

  • Ruminant Nutrition and Digestive Physiology
  • Reproductive Physiology in Livestock
  • Effects of Environmental Stressors on Livestock
  • Genetic and phenotypic traits in livestock
  • Soil and Water Nutrient Dynamics
  • Soil Carbon and Nitrogen Dynamics
  • Isotope Analysis in Ecology

Powell has published research articles in various journals, reflecting a diverse range of subject matter related to livestock nutrition, nutrient management, and environmental interactions. Notable papers include:

  • "Nutrient Intake, Excretion and Use Efficiency of Grazing Lactating Herds on Commercial Dairy Farms," 2020, Animals
  • "Estimating Excreted Nutrients to Improve Nutrient Management for Grazing System Dairy Farms," 2023, Animals
  • "Farming and ranching through wildfire: Producers' critical role in fire risk management and emergency response," 2025, California Agriculture
  • "Soil greenhouse gas flux and nitrogen mineralization following manure application from tannin-fed dairy cows," 2023, Journal of Environmental Quality
  • "Nonlinear models of 15N partitioning kinetics in late-lactation dairy cows from individually labeled feed ingredients," 2024, Journal of Dairy Science

The frequent venues for Powell's work include:

  • Animals
  • California Agriculture
  • Journal of Environmental Quality
  • Journal of Dairy Science
  • Journal of Rural Studies

Collaboration is a notable aspect of Powell's research, with repeated partnerships involving coauthors such as:

  • Sharon R. Aarons
  • C. J. P. Gourley
  • M.A. Wattiaux
  • Natalia Pinzón
  • Ryan E. Galt

The scientist's work integrates approaches from agronomy and animal science to address issues in nutrient cycling, waste management, and the environmental impacts of livestock production systems. Their research contributes to understanding how nutrient intake and excretion influence both productivity and environmental sustainability in grazing and dairy systems.

Best Publications

  • Effect of forage-to-concentrate ratio in dairy cow diets on emission of methane, carbon dioxide, and ammonia, lactation performance, and manure excretion

    M.J. Aguerre;M.A. Wattiaux;J.M. Powell;G.A. Broderick

  • Dietary manipulation in dairy cattle: laboratory experiments to assess the influence on ammonia emissions.

    T.H. Misselbrook;J.M. Powell;G.A. Broderick;J.H. Grabber

  • Nitrogen use efficiency: A potential performance indicator and policy tool for dairy farms

    J.M. Powell;C.J.P. Gourley;C.A. Rotz;D.M. Weaver

  • Management practice effects on phosphorus losses in runoff in corn production systems.

    L. G. Bundy;T. W. Andraski;J. M. Powell

  • A Survey of Selected Heavy Metal Concentrations in Wisconsin Dairy Feeds

    Y. Li;D. F. McCrory;J. M. Powell;H. Saam;H. Saam

  • Symposium review: Uncertainties in enteric methane inventories, measurement techniques, and prediction models

    A. N. Hristov;Ermias Kebreab;M. Niu;J. Oh

  • Nutrient cycling in integrated rangeland/cropland systems of the Sahel

    J.M. Powell;S. Fernández-Rivera;Pierre H.Y. Hiernaux;M. Turner

  • Increasing nutrient use efficiency in West-African agriculture: the impact of micro-topography on nutrient leaching from cattle and sheep manure

    J. Brouwer;J.M. Powell

  • Influence of Bedding Material on Ammonia Emissions from Cattle Excreta

    T.H. Misselbrook;J.M. Powell

  • Ammonia emissions from dairy production in Wisconsin.

    L.A. Harper;T.K. Flesch;J.M. Powell;W.K. Coblentz

  • Inverse-Dispersion Calculation of Ammonia Emissions from Wisconsin Dairy Farms

    T. K. Flesch;L. A. Harper;J. M. Powell;J. D. Wilson

  • Nitrogen use efficiency and manure management practices in contrasting dairy production systems

    Unknown

  • Invited review: Sustainable forage and grain crop production for the US dairy industry

    N.P. Martin;M.P. Russelle;J.M. Powell;C.J. Sniffen

  • Seasonal Diet Affects Ammonia Emissions from Tie-Stall Dairy Barns

    J.M. Powell;G.A. Broderick;T.H. Misselbrook

  • Technical note: effects of forage protein-binding polyphenols on chemistry of dairy excreta.

    J.M. Powell;G.A. Broderick;J.H. Grabber;U.C. Hymes-Fecht

  • Short communication: Evaluation of milk urea nitrogen as a management tool to reduce ammonia emissions from dairy farms

    J. M. Powell;Michel A. Wattiaux;Glen A. Broderick

  • Measures of Nitrogen Use Efficiency and Nitrogen Loss from Dairy Production Systems

    J. M. Powell;C. A. Rotz

  • Dairy Diet Impacts on Fecal Chemical Properties and Nitrogen Cycling in Soils

    J. M. Powell;M. A. Wattiaux;G. A. Broderick;V. R. Moreira

  • Performance, digestion, nitrogen balance, and emission of manure ammonia, enteric methane, and carbon dioxide in lactating cows fed diets with varying alfalfa silage-to-corn silage ratios

    C. Arndt;J.M. Powell;M.J. Aguerre;M.A. Wattiaux

  • Dairy slurry application method impacts ammonia emission and nitrate leaching in no-till corn silage

    J. M. Powell;W. E. Jokela;T. H. Misselbrook

  • Feed conversion efficiency in dairy cows: Repeatability, variation in digestion and metabolism of energy and nitrogen, and ruminal methanogens.

    C. Arndt;J.M. Powell;M.J. Aguerre;P.M. Crump

  • Phosphorus feeding and manure nutrient recycling on Wisconsin dairy farms

    J. M. Powell;Douglas B. Jackson-Smith;L. D. Satter

  • Emissions of ammonia, nitrous oxide, methane, and carbon dioxide during storage of dairy cow manure as affected by dietary forage-to-concentrate ratio and crust formation.

    M.J. Aguerre;M.A. Wattiaux;J.M. Powell

  • Dairy diet effects on phosphorus cycles of cropland

    J. M. Powell;Z. Wu;L. D. Satter

  • Validation of Feed and Manure Data Collected on Wisconsin Dairy Farms

    J.M. Powell;D.B. Jackson-Smith;D.F. McCrory;H. Saam

  • Dietary crude protein and tannin impact dairy manure chemistry and ammonia emissions from incubated soils.

    J. M. Powell;M. J. Aguerre;M. A. Wattiaux

Frequent Co-Authors

Tom Misselbrook
Tom Misselbrook Rothamsted Research
Michel A. Wattiaux
Michel A. Wattiaux University of Wisconsin–Madison
Glen A. Broderick
Glen A. Broderick University of Wisconsin–Madison
John H. Grabber
John H. Grabber Agricultural Research Service
Brian J. Wienhold
Brian J. Wienhold US Department of Agriculture
Timothy S. Griffin
Timothy S. Griffin University of Maine
Martin Riis Weisbjerg
Martin Riis Weisbjerg Aarhus University
Christopher K. Reynolds
Christopher K. Reynolds University of Reading
Kevin J. Shingfield
Kevin J. Shingfield Aberystwyth University
Alexander N. Hristov
Alexander N. Hristov Pennsylvania State University

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Related Online Degrees & Career Pathways

Students pursuing Animal Science and Veterinary careers often explore complementary fields that enhance their expertise in animal health and welfare. For those interested in mental health services related to animal-assisted therapy, exploring degrees such as online APA-accredited PsyD programs can be a valuable step. These programs focus on clinical psychology and counseling techniques, which are increasingly important in holistic animal care.

Additionally, professions in addiction and family counseling provide critical support networks that integrate well with veterinary social work. Prospective students may consider online colleges for addiction counseling or look into online marriage and family therapy graduate programs. These pathways offer practical skills for addressing behavioral health challenges in pet owners and communities.

For advanced career ambitions, such as research or academic leadership in counseling related to animal welfare, an online PhD in counseling provides an affordable route to specialized knowledge and expertise. This blend of science and counseling education opens new opportunities in interdisciplinary animal science careers.

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