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Ronald R. Marquardt

Ronald R. Marquardt

University of Manitoba
Canada

D-Index & Metrics

Biology and Biochemistry

D-Index
60
Citations
10411
World Ranking
12167
National Ranking
420

Ronald R. Marquardt publication distribution in Biology and Biochemistry in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Biology and Biochemistry in 2026. The highlighted bar marks where Ronald R. Marquardt sits on this spectrum.

47–56 publications: 8 scientists 57–66 publications: 35 scientists 67–76 publications: 106 scientists 77–86 publications: 231 scientists 87–96 publications: 414 scientists 97–106 publications: 546 scientists 107–116 publications: 704 scientists 117–126 publications: 849 scientists 127–136 publications: 980 scientists 137–146 publications: 942 scientists 147–156 publications: 969 scientists 157–166 publications: 950 scientists 167–176 publications: 951 scientists 177–186 publications: 915 scientists 187–196 publications: 787 scientists 197–206 publications: 841 scientists 207–216 publications: 735 scientists 217–226 publications: 709 scientists 227–236 publications: 651 scientists 237–246 publications: 605 scientists 247–256 publications: 510 scientists 257–266 publications: 524 scientists 267–276 publications: 434 scientists 277–286 publications: 418 scientists 287–296 publications: 350 scientists 297–306 publications: 363 scientists 307–316 publications: 315 scientists 317–326 publications: 296 scientists 327–336 publications: 261 scientists 337–346 publications: 240 scientists 347–356 publications: 219 scientists 357–366 publications: 197 scientists 367–376 publications: 154 scientists 377–386 publications: 161 scientists 387–396 publications: 155 scientists 397–406 publications: 145 scientists 407–416 publications: 124 scientists 417–426 publications: 112 scientists 427–436 publications: 132 scientists 437–446 publications: 116 scientists 447–456 publications: 99 scientists 457–466 publications: 81 scientists 467–476 publications: 91 scientists 477–486 publications: 80 scientists 487–496 publications: 80 scientists 497–506 publications: 60 scientists 507–516 publications: 36 scientists 517–526 publications: 46 scientists 527–536 publications: 54 scientists 537–546 publications: 44 scientists 547–556 publications: 43 scientists 557–566 publications: 43 scientists 567–576 publications: 42 scientists 577–586 publications: 25 scientists 587–596 publications: 34 scientists 597–606 publications: 23 scientists 607–616 publications: 33 scientists 617–626 publications: 31 scientists 627–636 publications: 27 scientists 637–646 publications: 25 scientists 647–656 publications: 28 scientists 657–666 publications: 34 scientists 667–676 publications: 18 scientists 677–686 publications: 16 scientists 687–696 publications: 10 scientists 697–706 publications: 12 scientists 707–716 publications: 21 scientists 717–726 publications: 12 scientists 727–736 publications: 12 scientists 737–746 publications: 10 scientists 747–756 publications: 7 scientists 757–766 publications: 13 scientists 767–776 publications: 15 scientists 777–786 publications: 13 scientists 787–796 publications: 9 scientists 797–806 publications: 9 scientists 807–816 publications: 7 scientists 817–826 publications: 4 scientists 827–836 publications: 9 scientists 837–846 publications: 7 scientists 847–856 publications: 3 scientists 857–866 publications: 5 scientists 867–876 publications: 5 scientists 877–886 publications: 11 scientists 887–896 publications: 3 scientists 897–906 publications: 4 scientists 907–916 publications: 7 scientists 917–926 publications: 5 scientists 927–936 publications: 6 scientists 937–946 publications: 6 scientists 947–956 publications: 3 scientists 957–966 publications: 7 scientists 967–976 publications: 2 scientists 977–986 publications: 2 scientists 987–996 publications: 1 scientists 997–1,006 publications: 5 scientists 1,007–1,016 publications: 2 scientists 1,017–1,026 publications: 2 scientists 1,027 publications: 1 scientists 1,028+ publications: 100 scientists
47 publications 1,028+

This scientist: 247 publications — 66th percentile

66% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,028 publications or more.

Ronald R. Marquardt D-index placement in Biology and Biochemistry in 2026

The chart shows the D-index (discipline H-index) distribution of Biology and Biochemistry scientists ranked by Research.com in 2026. The highlighted bar marks where Ronald R. Marquardt sits on this spectrum.

40–41 D-Index: 80 scientists 42–43 D-Index: 183 scientists 44–45 D-Index: 317 scientists 46–47 D-Index: 504 scientists 48–49 D-Index: 718 scientists 50–51 D-Index: 900 scientists 52–53 D-Index: 1,026 scientists 54–55 D-Index: 1,150 scientists 56–57 D-Index: 1,236 scientists 58–59 D-Index: 1,253 scientists 60–61 D-Index: 1,163 scientists 62–63 D-Index: 1,131 scientists 64–65 D-Index: 1,032 scientists 66–67 D-Index: 897 scientists 68–69 D-Index: 814 scientists 70–71 D-Index: 715 scientists 72–73 D-Index: 709 scientists 74–75 D-Index: 596 scientists 76–77 D-Index: 512 scientists 78–79 D-Index: 473 scientists 80–81 D-Index: 412 scientists 82–83 D-Index: 373 scientists 84–85 D-Index: 358 scientists 86–87 D-Index: 285 scientists 88–89 D-Index: 273 scientists 90–91 D-Index: 227 scientists 92–93 D-Index: 208 scientists 94–95 D-Index: 193 scientists 96–97 D-Index: 153 scientists 98–99 D-Index: 157 scientists 100–101 D-Index: 148 scientists 102–103 D-Index: 120 scientists 104–105 D-Index: 113 scientists 106–107 D-Index: 100 scientists 108–109 D-Index: 86 scientists 110–111 D-Index: 67 scientists 112–113 D-Index: 72 scientists 114–115 D-Index: 73 scientists 116–117 D-Index: 64 scientists 118–119 D-Index: 53 scientists 120–121 D-Index: 60 scientists 122–123 D-Index: 54 scientists 124–125 D-Index: 43 scientists 126–127 D-Index: 38 scientists 128–129 D-Index: 49 scientists 130–131 D-Index: 26 scientists 132–133 D-Index: 18 scientists 134–135 D-Index: 23 scientists 136–137 D-Index: 32 scientists 138–139 D-Index: 32 scientists 140–141 D-Index: 27 scientists 142–143 D-Index: 19 scientists 144–145 D-Index: 22 scientists 146–147 D-Index: 12 scientists 148–149 D-Index: 16 scientists 150–151 D-Index: 14 scientists 152–153 D-Index: 10 scientists 154–155 D-Index: 13 scientists 156–157 D-Index: 10 scientists 158–159 D-Index: 7 scientists 160–161 D-Index: 9 scientists 162–163 D-Index: 13 scientists 164–165 D-Index: 4 scientists 166 D-Index: 4 scientists 167+ D-Index: 98 scientists
40 D-Index 167+

This scientist: 60 D-Index — 41st percentile

41% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 167 D-Index or more.

Overview

Ronald R. Marquardt is affiliated with the University of Manitoba in Canada. Their academic profile includes participation in research activities connected to this institution.

There are no listed recent papers, frequent co-authors, or publication venues available for Ronald R. Marquardt at this time.

Information on main fields of study, subfields, and main topics of work is also not specified for this researcher.

No records of book publications or awards won have been provided.

Ronald R. Marquardt is currently living.

Best Publications

  • A review of recent advances in understanding ochratoxicosis.

    Ronald R. Marquardt;Andrzej A. Frohlich

  • Passive protective effect of egg-yolk antibodies against enterotoxigenic Escherichia coli K88+ infection in neonatal and early-weaned piglets

    Ronald R. Marquardt;L. Z. Jin;Jung Woo Kim;Lin Fang

  • The Effect of Enzyme Supplementation on the Apparent Metabolizable Energy and Nutrient Digestibilities of Wheat, Barley, Oats, and Rye for the Young Broiler Chick

    O. D. Friesen;W. Guenter;R. R. Marquardt;B. A. Rotter

  • Effect of enzyme supplementation on the performance and digestive tract size of broiler chickens fed wheat- and barley-based diets

    A. Brenes;M. Smith;W. Guenter;R. R. Marquardt

  • Response of early-weaned pigs to an enterotoxigenic Escherichia coli (K88) challenge when fed diets containing spray-dried porcine plasma or pea protein isolate plus egg yolk antibody, zinc oxide, fumaric acid, or antibiotic.

    A. Owusu-Asiedu;C. M. Nyachoti;R. R. Marquardt

  • Toxicity of Ochratoxin A, Its Opened Lactone Form and Several of Its Analogs: Structure–Activity Relationships

    Hao Xiao;Srinivasa Madhyastha;Ronald R. Marquardt;Suzhen Li

  • A Strain of Enterococcus faecium (18C23) Inhibits Adhesion of Enterotoxigenic Escherichia coli K88 to Porcine Small Intestine Mucus

    L. Z. Jin;L. Z. Jin;R. R. Marquardt;X. Zhao

  • Isolation, partial characterization, and antinutritional activity of a factor (pentosans) in rye grain.

    Takis Antoniou;Ronald R. Marquardt;Peter E. Cansfield

  • Pharmacokinetics of Ochratoxin A and Its Metabolites in Rats

    S. Li;R.R. Marquardt;A.A. Frohlich;T.G. Vitti

  • A Simple Spectrophotometric Method for the Direct Determination of Uric Acid in Avian Excreta

    Ronald R. Marquardt

  • Influence of vitamins E and C on the toxic effects of ochratoxin A and T-2 toxin in chicks.

    Dirk Hoehler;Ronald R. Marquardt

  • The nutritive value of barley, rye, wheat and corn for young chicks as affected by use of a Trichoderma reesei enzyme preparation

    R.R. Marquardt;D. Boros;W. Guenter;G. Crow

  • Response of early-weaned pigs to spray-dried porcine or animal plasma-based diets supplemented with egg-yolk antibodies against enterotoxigenic Escherichia coli

    A. Owusu-Asiedu;Samuel K Baidoo;C. M. Nyachoti;R. R. Marquardt

  • Purification, Identification and Characterization of a Growth Inhibitor in Faba Beans (Vicia faba L. var. minor)

    Ronald R. Marquardt;A. Thomas Ward;Lloyd D. Campbell;Peter E. Cansfield

  • Influence of Rye Pentosans on the Growth of Chicks

    T. Antoniou;R. R. Marquardt

  • In vitro inhibition of adhesion of enterotoxigenic Escherichia coli K88 to piglet intestinal mucus by egg-yolk antibodies

    L.Z Jin;Samuel K Baidoo;Ronald R Marquardt;Andrew A Frohlich

  • Effect of Enzyme Supplementation on the Nutritional Value of Raw, Autoclaved, and Dehulled Lupins (Lupinus albus) in Chicken Diets

    Agustín Brenes;R. R. Marquardt;W. Guenter;B. A. Rotter

  • Response of early-weaned pigs to an enterotoxigenic Escherichia coli (K88) challenge when fed diets containing spray-dried porcine plasma or pea protein isolate plus egg yolk antibody.

    A. Owusu-Asiedu;C. M. Nyachoti;Samuel K Baidoo;R. R. Marquardt

  • Studies of the tolerance and disposition of ochratoxin A in young calves.

    O. Sreemannarayana;A. A. Frohlich;T. G. Vitti;R. R. Marquardt

  • Use of enzymes to improve nutrient availability in poultry feedstuffs

    Ronald R. Marquardt;Agustin Brenes;Zhiqun Zhang;Dana Boros

Frequent Co-Authors

Wilhelm Guenter
Wilhelm Guenter University of Manitoba
Samuel K Baidoo
Samuel K Baidoo University of Minnesota
Karl-Heinz Südekum
Karl-Heinz Südekum University of Bonn
Charles M. Nyachoti
Charles M. Nyachoti University of Manitoba
Digvir S. Jayas
Digvir S. Jayas University of Manitoba
Grant M. Hatch
Grant M. Hatch University of Manitoba
Xi Yang
Xi Yang University of Manitoba
Xin Zhao
Xin Zhao McGill University
Steven C. Ricke
Steven C. Ricke University of Wisconsin–Madison
Peter Jones
Peter Jones University of Cambridge

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Best Scientists Citing Ronald R. Marquardt

Charles M. Nyachoti

Charles M. Nyachoti

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Publications: 27

Elijah G. Kiarie

Elijah G. Kiarie

University of Guelph

Publications: 23

Antonio J. Ramos

Antonio J. Ramos

University of Lleida

Publications: 20

Bogdan A. Slominski

Bogdan A. Slominski

University of Manitoba

Publications: 19

Vicente Sanchis

Vicente Sanchis

University of Lleida

Publications: 18

Velmurugu Ravindran

Velmurugu Ravindran

Massey University

Publications: 18

Bernard Carré

Bernard Carré

INRAE : Institut national de recherche pour l'agriculture, l'alimentation et l'environnement

Publications: 18

Sonia Marín

Sonia Marín

University of Lleida

Publications: 17

Henry L. Classen

Henry L. Classen

University of Saskatchewan

Publications: 17

Carlos M. G. A. Fontes

Carlos M. G. A. Fontes

Nzytech (Portugal)

Publications: 16

Wilhelm Guenter

Wilhelm Guenter

University of Manitoba

Publications: 16

Mingan Choct

Mingan Choct

University of New England

Publications: 16

Rudolf Krska

Rudolf Krska

BOKU University

Publications: 15

Yulong Yin

Yulong Yin

Chinese Academy of Sciences

Publications: 15

Jan A. Delcour

Jan A. Delcour

KU Leuven

Publications: 14

Per Åman

Per Åman

Swedish University of Agricultural Sciences

Publications: 13

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