World's Best Scientists 2026 revealed!

D-Index & Metrics

Animal Science and Veterinary

D-Index
55
Citations
9813
World Ranking
456
National Ranking
34

Henry L. Classen 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 Henry L. Classen 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: 184 publications — 70th percentile

70% of scientists in this discipline score the same or lower.

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

Henry L. Classen 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 Henry L. Classen 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: 55 D-Index — 86th percentile

86% of scientists in this discipline score the same or lower.

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

Overview

What is he best known for?

The fields of study he is best known for:

  • Internal medicine
  • Enzyme
  • Food science

Henry L. Classen mostly deals with Food science, Broiler, Animal science, Feed conversion ratio and Canola. His Food science research is multidisciplinary, incorporating elements of Hydrolysis, Biochemistry, Carbohydrate, Incubation and Colony-forming unit. The Broiler study combines topics in areas such as Small intestine, Viscosity, Nutrient density and Body weight, Weight gain.

His Animal science study combines topics in areas such as photoperiodism, Incidence and Agronomy. In his study, Ageing, Nutrient digestibility and Dietary fat is strongly linked to Glucanase, which falls under the umbrella field of Feed conversion ratio. His Canola research incorporates themes from Meal and Phytic acid.

His most cited work include:

  • Reduction of intestinal viscosity through manipulation of dietary rye and pentosanase concentration is effected through changes in the carbohydrate composition of the intestinal aqueous phase and results in improved growth rate and food conversion efficiency of broiler chicks. (378 citations)
  • The effect of minerals and mineral chelators on the formation of phytase-resistant and phytase-susceptible forms of phytic acid in solution and in a slurry of canola meal (200 citations)
  • The effect of pelleting, salt, and pentosanase on the viscosity of intestinal contents and the performance of broilers fed rye. (197 citations)

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

His primary areas of investigation include Broiler, Animal science, Food science, Feed conversion ratio and Meal. His research integrates issues of Starch, Ascites, Veterinary medicine, Weight gain and Ileum in his study of Broiler. His Animal science research also works with subjects such as

  • photoperiodism which connect with Endocrinology,
  • Cultivar and related Enzyme supplementation.

Henry L. Classen combines subjects such as Biochemistry and Phytase with his study of Food science. The various areas that Henry L. Classen examines in his Feed conversion ratio study include Glucanase, Whole wheat and Gizzard. His Meal study integrates concerns from other disciplines, such as Amen and Extraction.

He most often published in these fields:

  • Broiler (47.31%)
  • Animal science (38.92%)
  • Food science (30.54%)

What were the highlights of his more recent work (between 2016-2021)?

  • Animal science (38.92%)
  • Broiler (47.31%)
  • Feed conversion ratio (21.56%)

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

His primary areas of study are Animal science, Broiler, Feed conversion ratio, Digestion and Food science. The study incorporates disciplines such as Body weight and Analysis of variance in addition to Animal science. His studies in Broiler integrate themes in fields like Beta-glucan, Colonization, Gastrointestinal tract, Coccidiosis and Ileum.

He works mostly in the field of Digestion, limiting it down to topics relating to Starch and, in certain cases, Cultivar. His Food science research incorporates elements of Polyamine, Phosphate, Digestive tract and Phytase. His research in Amen intersects with topics in Internal medicine, Dietary nutrients and Endocrinology.

Between 2016 and 2021, his most popular works were:

  • Diet energy and feed intake in chickens (31 citations)
  • Development of an in vitro protein digestibility assay mimicking the chicken digestive tract. (15 citations)
  • Phytate degradation in gnotobiotic broiler chickens and effects of dietary supplements of phosphorus, calcium, and phytase. (9 citations)

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

  • Internal medicine
  • Enzyme
  • Biochemistry

The scientist’s investigation covers issues in Digestion, Animal science, Feed conversion ratio, Corn gluten meal and Food science. His Digestion study deals with Starch intersecting with Cultivar, Polysaccharide and Starter. His study in Animal science is interdisciplinary in nature, drawing from both Endocrinology and Internal medicine.

His Feed conversion ratio study incorporates themes from Analysis of variance, Starch digestion and Broiler. His Corn gluten meal research is multidisciplinary, incorporating perspectives in Meat and bone meal and Feather meal. Henry L. Classen merges Food science with Inositol phosphate in his research.

Best Publications

  • Reduction of intestinal viscosity through manipulation of dietary rye and pentosanase concentration is effected through changes in the carbohydrate composition of the intestinal aqueous phase and results in improved growth rate and food conversion efficiency of broiler chicks.

    Michael R. Bedford;Henry L. Classen

  • The effect of pelleting, salt, and pentosanase on the viscosity of intestinal contents and the performance of broilers fed rye.

    M. R. Bedford;H. L. Classen;G. L. Campbell

  • The effect of minerals and mineral chelators on the formation of phytase-resistant and phytase-susceptible forms of phytic acid in solution and in a slurry of canola meal

    David D Maenz;Carmen M Engele-Schaan;Rex W Newkirk;Henry L Classen

  • An In Vitro Assay for Prediction of Broiler Intestinal Viscosity and Growth When Fed Rye-Based Diets in the Presence of Exogenous Enzymes

    M. R. Bedford;H. L. Classen

  • Phytase activity in the small intestinal brush border membrane of the chicken

    DD Maenz;HL Classen

  • Function and nutritional roles of the avian caeca: a review

    B. Svihus;M. Choct;H.L. Classen

  • Response of chickens fed on hull-less barley to dietary β-glucanase at different ages

    M.E. Salih;H.L. Classen;G.L. Campbell

  • Photoperiodic Effects on Performance and Leg Abnormalities in Broiler Chickens

    H. L. Classen;C. Riddell

  • The digestibility and content of amino acids in toasted and non-toasted canola meals

    R. W. Newkirk;H. L. Classen;T. A. Scott;M. J. Edney

  • Replacement of fishmeal by canola protein concentrate in diets fed to rainbow trout (Oncorhynchus mykiss)

    D.L. Thiessen;D.D. Maenz;R.W. Newkirk;H.L. Classen

  • Cereal grain starch and exogenous enzymes in poultry diets

    H.L. Classen

  • Effects of increasing photoperiod length on performance and health of broiler chickens

    H L Classen;C Riddell;F E Robinson

  • Growth Performance, Feed Efficiency and the Incidence of Skeletal and Metabolic Disease in Full-Fed and Feed Restricted Broiler and Roaster Chickens

    F. E. Robinson;H. L. Classen;J. A. Hanson;D. K. Onderka

  • The energy content of barley fed to growing pigs: characterizing the nature of its variability and developing prediction equations for its estimation.

    S L Fairbairn;J F Patience;H L Classen;R T Zijlstra

  • Effect of light intensity on broiler production, processing characteristics, and welfare

    A. Deep;K. Schwean-Lardner;T. G. Crowe;B. I. Fancher

  • Influence of Dietary Nutrient Density, Feed Form, and Lighting on Growth and Meat Yield of Broiler Chickens

    K. E. Brickett;J. P. Dahiya;H. L. Classen;S. Gomis

  • Genotypic and environmental differences in extract viscosity of barley and their relationship to its nutritive value for broiler chickens

    G.L. Campbell;B.G. Rossnagel;H.L. Classen;P.A. Thacker

  • The effect of dietary enzyme supplementation of rye- and barley-based diets on digestion and subsequent performance in weanling pigs

    J. F. Patience;M. R. Bedford;H. L. Classen;J. Inborr

  • The effect of β-glucanase supplementation on nutrient digestibility and growth in broilers given diets containing barley, oat groats or wheat

    M.J. Edney;G.L. Campbell;H.L. Classen

  • The effects of toasting canola meal on body weight, feed conversion efficiency, and mortality in broiler chickens

    RW Newkirk;HL Classen

  • STUDIES ON THE USE OF HULLESS BARLEY IN CHICK DIETS: DELETERIOUS EFFECTS AND METHODS OF ALLEVIATION

    H. L. Classen;G. L. Campbell;B. G. Rossnagel;R. Bhatty

  • The Impact of Nutrient Density, Feed Form, and Photoperiod on the Walking Ability and Skeletal Quality of Broiler Chickens

    K. E. Brickett;J. P. Dahiya;H. L. Classen;C. B. Annett

  • Feeding broiler chickens wheat and barley diets containing whole, ground and pelleted grain.

    CD Bennett;HL Classen;C Riddell

Frequent Co-Authors

Andrew G. Van Kessel
Andrew G. Van Kessel University of Saskatchewan
Pierre Hucl
Pierre Hucl University of Saskatchewan
Brian G. Rossnagel
Brian G. Rossnagel University of Saskatchewan
F. E. Robinson
F. E. Robinson University of Alberta
J. D. Garlich
J. D. Garlich North Carolina State University
Philip A. Thacker
Philip A. Thacker University of Saskatchewan
Wilhelm Guenter
Wilhelm Guenter University of Manitoba
Birger Svihus
Birger Svihus Norwegian University of Life Sciences
M. R. Bedford
M. R. Bedford AmeriCorps VISTA
Peter R. Ferket
Peter R. Ferket North Carolina State University

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Related Online Degrees & Career Pathways

Studying Animal Science and Veterinary opens diverse career options, many of which benefit from complementary skills in human and animal health, behavior, and management. For those interested in leadership roles within sports and animal-related organizations, exploring the how to become an athletic director path can provide valuable insights into administrative and operational responsibilities.

Students might also consider online degree programs that enhance their understanding of movement and physical health. Programs in online exercise science programs offer specialized knowledge beneficial for animal trainers, rehabilitation specialists, or those interested in comparative physiology.

Behavioral aspects are also crucial in veterinary and animal science careers. For those wanting to delve deeper into behavior management, studying a behavioral analysis degree can provide techniques applicable to animal training and therapeutic interventions.

Lastly, understanding psychological principles through nasp accredited online school psychology programs can support professionals working in animal-assisted therapy or educational roles involving animals, fostering stronger human-animal connections.

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