World's Best Scientists 2026 revealed!

D-Index & Metrics

Animal Science and Veterinary

D-Index
38
Citations
4470
World Ranking
1442
National Ranking
423

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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