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Brian K. Speake

D-Index & Metrics

Biology and Biochemistry

D-Index
55
Citations
8177
World Ranking
15285
National Ranking
1203

Brian K. Speake 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 Brian K. Speake 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: 413 scientists 97–106 publications: 546 scientists 107–116 publications: 704 scientists 117–126 publications: 848 scientists 127–136 publications: 980 scientists 137–146 publications: 942 scientists 147–156 publications: 969 scientists 157–166 publications: 949 scientists 167–176 publications: 951 scientists 177–186 publications: 915 scientists 187–196 publications: 787 scientists 197–206 publications: 840 scientists 207–216 publications: 733 scientists 217–226 publications: 708 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: 417 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: 196 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: 59 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: 149 publications — 26th percentile

26% of scientists in this discipline score the same or lower.

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

Brian K. Speake 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 Brian K. Speake sits on this spectrum.

40–41 D-Index: 80 scientists 42–43 D-Index: 183 scientists 44–45 D-Index: 316 scientists 46–47 D-Index: 504 scientists 48–49 D-Index: 718 scientists 50–51 D-Index: 899 scientists 52–53 D-Index: 1,025 scientists 54–55 D-Index: 1,149 scientists 56–57 D-Index: 1,235 scientists 58–59 D-Index: 1,253 scientists 60–61 D-Index: 1,162 scientists 62–63 D-Index: 1,130 scientists 64–65 D-Index: 1,031 scientists 66–67 D-Index: 897 scientists 68–69 D-Index: 814 scientists 70–71 D-Index: 714 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: 71 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: 55 D-Index — 25th percentile

25% of scientists in this discipline score the same or lower.

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

Overview

Brian K. Speake is affiliated with the Scottish Agricultural College in the United Kingdom. Their work is connected to the institution, contributing to the academic and practical landscape of agricultural sciences in that region.

No recent papers, co-authors, publication venues, or awards have been documented in the available data. There is also no detailed information regarding their specific fields or subfields of study, main topics of research, or book publications.

This profile is based on the limited information currently accessible about Brian K. Speake, emphasizing their institutional affiliation without further detail on research output or academic contributions.

Best Publications

  • Transport and transformations of yolk lipids during development of the avian embryo

    Brian K. Speake;Alison M.B. Murray;Raymond C. Noble

  • Tissue-specific differences in antioxidant distribution and susceptibility to lipid peroxidation during development of the chick embryo.

    Peter F. Surai;Raymond C. Noble;Brian K. Speake

  • Distribution of carotenoids from the yolk to the tissues of the chick embryo

    Peter F Surai;Brian K Speake

  • Carotenoids in Avian Nutrition and Embryonic Development. 1. Absorption, Availability and Levels in Plasma and Egg Yolk

    P. F. Surai;B. K. Speake;N. H. C. Sparks

  • Lipid and antioxidant changes in spermatozoa and seminal plasma throughout the reproductive period of bulls

    K. A. Kelso;A. Redpath;R. C. Noble;B. K. Speake

  • Parental investment and egg yolk lipid composition in gulls

    Nick J. Royle;P. F. Surai;R. J. McCartney;B. K. Speake

  • Effect of dietary fat supplements on levels of n-3 poly-unsaturated fatty acids, trans acids and conjugated linoleic acid in bovine milk

    N. W. Offer;M. Marsden;J. Dixon;B. K. Speake

  • Designer egg evaluation in a controlled trial.

    P. F. Surai;A. MacPherson;B. K. Speake;N. H. C. Sparks

  • Relationship between spermatozoan lipid composition and fertility during aging of chickens.

    S Cerolini;K A Kelso;R C Noble;B K Speake

  • Effect of Vitamin E and Selenium Supplementation of Cockerel Diets on Glutathione Peroxidase Activity and Lipid Peroxidation Susceptibility in Sperm, Testes, and Liver

    Peter Surai;Inna Kostjuk;Graham Wishart;Allan Macpherson

  • Effect of canthaxanthin content of the maternal diet on the antioxidant system of the developing chick.

    A.P. Surai;P.F. Surai;W. Steinberg;W.G. Wakeman

  • Polyunsaturated Fatty Acids, Lipid Peroxidation and Antioxidant Protection in Avian Semen - Review -

    P. F. Surai;N. Fujihara;B. K. Speake;J-P. Brillard

  • Maternal docosahexaenoic acid supplementation and fetal accretion.

    Colette Montgomery;Brian K. Speake;Alan Cameron;Naveed Sattar

  • Effect of supplementing the hen's diet with vitamin A on the accumulation of vitamins A and E, ascorbic acid and carotenoids in the egg yolk and in the embryonic liver

    P. F. Surai;I. A. Ionov;T. V. Kuklenko;I. A. Kostjuk

  • Lipid and antioxidant changes in semen of broiler fowl from 25 to 60 weeks of age

    K. A. Kelso;S. Cerolini;R. C. Noble;N. H. C Sparks

  • Carotenoid discrimination by the avian embryo: a lesson from wild birds.

    Peter F. Surai;Brian K. Speake;Nicholas A.R. Wood;Jonathan D. Blount

  • Embryonic development within carotenoid-enriched eggs influences the post-hatch carotenoid status of the chicken.

    Filiz Karadas;Athanasios C. Pappas;Peter F. Surai;Brian K. Speake

  • Effects of dietary supplementation with α-linolenic acid on the phospholipid fatty acid composition and quality of spermatozoa in cockerel from 24 to 72 weeks of age

    K. A. Kelso;S. Cerolini;B. K. Speake;L. G. Cavalchini

  • Relationship between vitamin E content and susceptibility to lipid peroxidation in tissues of the newly hatched chick

    P. F. Surai;R. C. Noble;B. K. Speake

  • Carotenoids in Avian Nutrition and Embryonic Development. 2. Antioxidant Properties and Discrimination in Embryonic Tissues

    P. F. Surai;B. K. Speake;N. H. C. Sparks

Frequent Co-Authors

Peter F. Surai
Peter F. Surai Feed Food Ltd
Michael B. Thompson
Michael B. Thompson University of Sydney
Gary R. Bortolotti
Gary R. Bortolotti University of Saskatchewan
Mark W. J. Ferguson
Mark W. J. Ferguson University of Manchester
Stephen Bishop
Stephen Bishop University of Edinburgh
Jonathan D. Blount
Jonathan D. Blount University of Exeter
Ronald R. Watson
Ronald R. Watson University of Arizona
Naveed Sattar
Naveed Sattar University of Glasgow
D. C. Deeming
D. C. Deeming University of Lincoln
Phillip Cassey
Phillip Cassey University of Adelaide

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Best Scientists Citing Brian K. Speake

Peter F. Surai

Peter F. Surai

Feed Food Ltd

Publications: 80

Michael B. Thompson

Michael B. Thompson

University of Sydney

Publications: 63

Kevin J. McGraw

Kevin J. McGraw

Arizona State University

Publications: 33

Anders Pape Møller

Anders Pape Møller

University of Paris-Saclay

Publications: 33

David Costantini

David Costantini

French National Museum of Natural History

Publications: 32

Kevin J. Shingfield

Kevin J. Shingfield

Aberystwyth University

Publications: 23

Nicola Saino

Nicola Saino

University of Milan

Publications: 20

Yves Chilliard

Yves Chilliard

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

Publications: 18

Jonathan D. Blount

Jonathan D. Blount

University of Exeter

Publications: 16

Matthew C. Brandley

Matthew C. Brandley

University of Sydney

Publications: 16

Laurence Bernard

Laurence Bernard

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

Publications: 13

Erik Wapstra

Erik Wapstra

University of Tasmania

Publications: 13

Ton G. G. Groothuis

Ton G. G. Groothuis

University of Groningen

Publications: 11

János Török

János Török

Eötvös Loránd University

Publications: 11

Mohammad Javad Zamiri

Mohammad Javad Zamiri

Shiraz University

Publications: 10

Rifat Ullah Khan

Rifat Ullah Khan

University of Agriculture

Publications: 10

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