World's Best Scientists 2026 revealed!

D-Index & Metrics

Animal Science and Veterinary

D-Index
29
Citations
5098
World Ranking
2530
National Ranking
709

Overview

What is he best known for?

The fields of study he is best known for:

  • Biochemistry
  • Enzyme
  • Organic chemistry

Richard A. Kohn mainly focuses on Animal science, Urea, Dairy cattle, Nitrogen and Excretion. His Animal science study combines topics from a wide range of disciplines, such as Biotechnology and Inorganic phosphorus. Richard A. Kohn integrates many fields in his works, including Urea and Urea nitrogen.

Richard A. Kohn has researched Dairy cattle in several fields, including Herd, Herd management and Forage. The concepts of his Nitrogen study are interwoven with issues in Clearance rate and Gram. His Excretion research includes themes of Feed conversion ratio and Nitrogen balance.

His most cited work include:

  • Using Milk Urea Nitrogen to Predict Nitrogen Excretion and Utilization Efficiency in Lactating Dairy Cows (341 citations)
  • A nitrogen footprint model to help consumers understand their role in nitrogen losses to the environment (246 citations)
  • Using blood urea nitrogen to predict nitrogen excretion and efficiency of nitrogen utilization in cattle, sheep, goats, horses, pigs, and rats (245 citations)

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

His primary areas of study are Animal science, Rumen, Dairy cattle, Food science and Herd. The Animal science study combines topics in areas such as Urea, Dairy industry, Excretion and Nitrogen. His Rumen research is multidisciplinary, incorporating perspectives in Chromatography and Metabolism.

Richard A. Kohn has included themes like Endocrinology and Milk production in his Dairy cattle study. His Food science research includes elements of Dry matter and Cattle feeding. His Herd study which covers Manure that intersects with Crop, Animal product and Dietary Formulations.

He most often published in these fields:

  • Animal science (38.18%)
  • Rumen (30.91%)
  • Dairy cattle (29.09%)

What were the highlights of his more recent work (between 2011-2019)?

  • Fermentation (14.55%)
  • Rumen (30.91%)
  • Microorganism (7.27%)

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

Fermentation, Rumen, Microorganism, Food science and Fatty acid are his primary areas of study. His studies deal with areas such as Environmental chemistry and Acetogenesis, Methanogenesis as well as Rumen. His Microorganism research is multidisciplinary, relying on both Biomass, Biotechnology and Biochemistry.

Richard A. Kohn interconnects Hydrogen supply, Propionate, Animal science and Volatile fatty acids in the investigation of issues within Fatty acid. His Propionate research is multidisciplinary, incorporating elements of In vitro, Butyrate, Chromatography, Digestion and Forage. His research integrates issues of Sodium acetate and Nutrient in his study of Animal science.

Between 2011 and 2019, his most popular works were:

  • A nitrogen footprint model to help consumers understand their role in nitrogen losses to the environment (246 citations)
  • Impacts of ruminal microorganisms on the production of fuels: how can we intercede from the outside? (12 citations)
  • Representing interconversions among volatile fatty acids in the Molly cow model (6 citations)

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

  • Using blood urea nitrogen to predict nitrogen excretion and efficiency of nitrogen utilization in cattle, sheep, goats, horses, pigs, and rats

    R. A. Kohn;M. M. Dinneen;E. Russek-Cohen

  • Effects of Amount and Source of Fat on the Rates of Lipolysis and Biohydrogenation of Fatty Acids in Ruminal Contents

    T.M. Beam;T.C. Jenkins;P.J. Moate;R.A. Kohn

  • 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

  • Evaluation of models to estimate urinary nitrogen and expected milk urea nitrogen.

    R.A. Kohn;K.F. Kalscheur;E. Russek-Cohen

  • Dairy Herd Management Practices that Impact Nitrogen Utilization Efficiency

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

  • A Sensitivity Analysis of Nitrogen Losses from Dairy Farms

    R.A. Kohn;Z. Dou;J.D. Ferguson;R.C. Boston

  • Phosphorus characteristics of dairy feces affected by diets.

    Zhengxia Dou;Katharine F. Knowlton;Richard A. Kohn;Zhiguo Wu

  • 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

  • Milk production of dairy cows fed differing concentrations of rumen-degraded protein.

    K.F. Kalscheur;K.F. Kalscheur;R.L. Baldwin;B.P. Glenn;R.A. Kohn

  • Calculation of the buffering capacity of bicarbonate in the rumen and in vitro.

    R A Kohn;T F Dunlap

  • Use of milk urea nitrogen to improve dairy cow diets.

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

  • A meta-analysis of fumarate effects on methane production in ruminal batch cultures

    E. M. Ungerfeld;R. A. Kohn;R. J. Wallace;C. J. Newbold

  • EFFECTS OF MILK UREA NITROGEN AND OTHER FACTORS ON PROBABILITY OF CONCEPTION OF DAIRY COWS

    K. Guo;E. Russek-Cohen;M. A.Varner;R.A. Kohn

  • Whole-farm nitrogen balance on western dairy farms.

    R. A. Spears;R. A. Kohn;Allen J. Young

  • Enrichment of proteolytic activity relative to nitrogen in preparations from the rumen for in vitro studies

    R.A. Kohn;M.S. Allen

  • Phosphorus Feeding Levels and Critical Control Points on Dairy Farms

    Z. Dou;J.D. Ferguson;J. Fiorini;J.D. Toth

  • Whole-Farm Phosphorus Balance on Western Dairy Farms

    R.A. Spears;A.J. Young;R.A. Kohn

  • The role of thermodynamics in controlling rumen metabolism.

    R. A. Kohn;R. C. Boston;J. P. McNamara

  • Managing Nitrogen on Dairy Farms: An Integrated Approach I. Model Description

    Z. Dou;R.A. Kohn;J.D. Ferguson;R.C. Boston

  • Evaluation of Models for Balancing the Protein Requirements of Dairy Cows

    R.A. Kohn;K.F. Kalscheur;M. Hanigan

  • Salvage of blood urea nitrogen in sheep is highly dependent on plasma urea concentration and the efficiency of capture within the digestive tract.

    Nishanth E Sunny;Sandra L Owens;R L Baldwin;Samer W El-Kadi

  • In vitro protein degradation of feeds using concentrated enzymes extracted from rumen contents

    R.A. Kohn;M.S. Allen

  • Storage of fresh and ensiled forages by freezing affects fibre and crude protein fractions

    Richard A Kohn;Michael S Allen

  • Comparison of analytical methods and the influence of milk components on milk urea nitrogen recovery.

    A.B. Peterson;K.R. French;E. Russek-Cohen;R.A. Kohn

  • The Impact of Somatotropin, Milking Frequency, and Photoperiod on Dairy Farm Nutrient Flows

    T.F. Dunlap;R.A. Kohn;G.E. Dahl;M. Varner

  • The impact of animal production systems on the nitrogen cycle

    James Galloway;Frank Dentener;Marshall Burke;Egon Dumont

  • Impacts of ruminal microorganisms on the production of fuels: how can we intercede from the outside?

    Paul J. Weimer;Paul J. Weimer;Richard A. Kohn

  • A Comparison of Instruments and Laboratories Used to Measure Milk Urea Nitrogen in Bulk-Tank Milk Samples*

    R.A. Kohn;K.R. French;E. Russek-Cohen

Frequent Co-Authors

James D. Ferguson
James D. Ferguson University of Pennsylvania
Richard A. Erdman
Richard A. Erdman University of Maryland, College Park
Zhengxia Dou
Zhengxia Dou University of Pennsylvania
Kenneth Kalscheur
Kenneth Kalscheur Agricultural Research Service
Michael S. Allen
Michael S. Allen Michigan State University
Raymond C. Boston
Raymond C. Boston St Vincent's Hospital
James N. Galloway
James N. Galloway University of Virginia
Paul J. Weimer
Paul J. Weimer University of Wisconsin–Madison
T.C. Jenkins
T.C. Jenkins Clemson University

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Related Online Degrees & Career Pathways

Exploring a career in Animal Science and Veterinary fields opens the door to diverse educational options and professional paths. Many students complement their animal-centered studies by pursuing a marriage and family counseling degree online, which enhances skills in communication and empathy, beneficial for client interactions in veterinary counseling or animal welfare roles.

For those interested in advanced research or academic roles, pursuing a doctorate in counseling online offers a flexible route to specialize in areas such as animal-assisted therapy or behavioral science.

Students committed to working directly with animals will find numerous options outlined under animal degrees. These programs prepare graduates for careers ranging from veterinary medicine to wildlife conservation and animal nutrition.

Interestingly, the leadership and management skills developed through such studies can also lead to unique career opportunities, including positions like an athletic director. Learning what does an athletic director do highlights the crossover potential in managing teams, events, and organizational operations—skills relevant in animal facility administration or educational program coordination.

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