World's Best Scientists 2026 revealed!
Katharine F. Knowlton

Katharine F. Knowlton

D-Index & Metrics

Animal Science and Veterinary

D-Index
32
Citations
4155
World Ranking
2116
National Ranking
603

Katharine F. Knowlton 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 Katharine F. Knowlton 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: 116 publications — 36th percentile

36% of scientists in this discipline score the same or lower.

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

Katharine F. Knowlton 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 Katharine F. Knowlton 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: 32 D-Index — 34th percentile

34% of scientists in this discipline score the same or lower.

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

Overview

Katharine F. Knowlton is affiliated with Virginia Tech in the United States and has conducted research primarily within the fields of Biochemistry, Genetics and Molecular Biology, and Environmental Science. Their work spans several subfields including Pollution, Molecular Biology, Molecular Medicine, Agronomy and Crop Science, and Pharmacology.

The central themes of Knowlton's research focus on Pharmaceutical and Antibiotic Environmental Impacts, Antibiotic Resistance in Bacteria, Gut Microbiota and Health, Ruminant Nutrition and Digestive Physiology, Antibiotics Pharmacokinetics and Efficacy, Genomics and Phylogenetic Studies, and Composting and Vermicomposting Techniques.

Knowlton's recent papers include:

  • Combined effects of composting and antibiotic administration on cattle manure-borne antibiotic resistance genes, 2021, Microbiome
  • Metagenomic tracking of antibiotic resistance genes through a pre-harvest vegetable production system: an integrated lab-, microcosm- and greenhouse-scale analysis, 2022, Environmental Microbiology
  • Graduate Student Literature Review: Potential mechanisms of interaction between bacteria and the reproductive tract of dairy cattle, 2020, Journal of Dairy Science
  • Short communication: Increasing temperature and pH can facilitate reductions of cephapirin and antibiotic resistance genes in dairy manure slurries, 2020, Journal of Dairy Science
  • Integrated Metagenomic Assessment of Multiple Pre-harvest Control Points on Lettuce Resistomes at Field-Scale, 2021, Frontiers in Microbiology

The venues where Knowlton frequently publishes include:

  • Journal of Dairy Science
  • Animals
  • Microbiome
  • Environmental Microbiology
  • Frontiers in Microbiology

Knowlton collaborates regularly with several coauthors, including:

  • Amy Pruden
  • Ishi Keenum
  • Partha Ray
  • Kang Xia
  • Lauren Wind

Best Publications

  • Invited review: Sustainability of the US dairy industry.

    M. A.G. von Keyserlingk;N. P. Martin;Ermias Kebreab;K. F. Knowlton

  • Animal management to reduce phosphorus losses to the environment.

    K. F. Knowlton;J. S. Radcliffe;C. L. Novak;D. A. Emmerson

  • 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 Manure Application on Abundance of Antibiotic Resistance Genes and Their Attenuation Rates in Soil: Field-Scale Mass Balance Approach

    Nicole Fahrenfeld;Katharine Knowlton;Leigh Anne Krometis;W Cully Hession

  • Phosphorus partitioning during early lactation in dairy cows fed diets varying in phosphorus content.

    K.F. Knowlton;J.H. Herbein

  • Phosphorus characteristics of dairy feces affected by diets.

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

  • 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

  • Occurrence, fate and removal of synthetic oral contraceptives (SOCs) in the natural environment: A review

    Ze-hua Liu;Jactone Arogo Ogejo;Amy Pruden;Katharine F. Knowlton

  • Phosphorus Feeding Levels and Critical Control Points on Dairy Farms

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

  • Ammonia Emissions and Animal Agriculture

    Katharine F. Knowlton

  • Metagenomic analysis of antibiotic resistance genes in dairy cow feces following therapeutic administration of third generation cephalosporin

    Lindsey Chambers;Ying Yang;Heather Littier;Partha Ray

  • Nitrogen and phosphorus partitioning in lactating Holstein cows fed different sources of dietary protein and phosphorus.

    K.F. Knowlton;J.H. Herbein;M.A. Meister-Weisbarth;W.A. Wark

  • Effects of milk replacer composition on growth, body composition, and nutrient excretion in preweaned Holstein heifers

    S.R. Hill;K.F. Knowlton;K.M. Daniels;R.E. James

  • Lasalocid and Particle Size of Corn Grain for Dairy Cows in Early Lactation. 1. Effect on Performance, Serum Metabolites, and Nutrient Digestibility

    K. F. Knowlton;M. S. Allen;Peter S. Erickson

  • Excretion of antibiotic resistance genes by dairy calves fed milk replacers with varying doses of antibiotics.

    Callie H. Thames;Amy Pruden;Robert E. James;Partha P. Ray

  • Cow and herd variation in milk urea nitrogen concentrations in lactating dairy cattle.

    M. Aguilar;M.D. Hanigan;H.A. Tucker;B.L. Jones

  • Manure nutrient excretion by lactating cows fed exogenous phytase and cellulase.

    K.F. Knowlton;M.S. Taylor;S.R. Hill;C. Cobb

  • Effect of a direct-fed fibrolytic enzyme formulation on nutrient intake, partitioning, and excretion in early and late lactation Holstein cows.

    K.F. Knowlton;J.M. McKinney;C. Cobb

  • Fate and Effect of Antibiotics in Beef and Dairy Manure during Static and Turned Composting

    Partha Ray;Chaoqi Chen;Katharine F. Knowlton;Amy Pruden

  • Dietary calcium has little effect on mineral balance and bone mineral metabolism through twenty weeks of lactation in Holstein cows

    M.S. Taylor;K.F. Knowlton;M.L. McGilliard;W.S. Swecker

  • Effects of Milk Replacer Composition on Selected Blood Metabolites and Hormones in Preweaned Holstein Heifers

    K.M. Daniels;S.R. Hill;K.F. Knowlton;R.E. James

  • Blood mineral, hormone, and osteocalcin responses of multiparous Jersey cows to an oral dose of 25-hydroxyvitamin D3 or vitamin D3 before parturition.

    M.S. Taylor;K.F. Knowlton;M.L. McGilliard;W.M. Seymour

  • Lasalocid and Particle Size of Corn Grain for Dairy Cows in Early Lactation. 2. Effect on Ruminal Measurements and Feeding Behavior

    K. F. Knowlton;M. S. Allen;Peter S. Erickson

  • Exposure to dairy manure leads to greater antibiotic resistance and increased mass-specific respiration in soil microbial communities

    Carl Wepking;Bethany Avera;Brian Badgley;John E. Barrett

  • Effect of composting and soil type on dissipation of veterinary antibiotics in land-applied manures.

    Chaoqi Chen;Partha Ray;Katharine F. Knowlton;Amy Pruden

  • Combined effects of composting and antibiotic administration on cattle manure–borne antibiotic resistance genes

    Ishi Keenum;Robert K. Williams;Partha Ray;Emily D. Garner;Emily D. Garner

  • A model of phosphorus digestion and metabolism in the lactating dairy cow.

    S.R. Hill;K.F. Knowlton;E. Kebreab

Frequent Co-Authors

Nancy G. Love
Nancy G. Love University of Michigan–Ann Arbor
Amy Pruden
Amy Pruden Virginia Tech
M.L. McGilliard
M.L. McGilliard Virginia Tech
James D. Ferguson
James D. Ferguson University of Pennsylvania
Zhengxia Dou
Zhengxia Dou University of Pennsylvania
Ermias Kebreab
Ermias Kebreab University of California, Davis
Richard A. Kohn
Richard A. Kohn University of Maryland, College Park
Michael S. Strickland
Michael S. Strickland University of Idaho
J.H. Herbein
J.H. Herbein Virginia Tech
John E. Barrett
John E. Barrett Virginia Tech

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