World's Best Scientists 2026 revealed!
N.B. Williamson

N.B. Williamson

D-Index & Metrics

Animal Science and Veterinary

D-Index
31
Citations
3002
World Ranking
2351
National Ranking
38

N.B. Williamson 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 N.B. Williamson 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: 111 publications — 34th percentile

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

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

N.B. Williamson 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 N.B. Williamson 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: 31 D-Index — 30th percentile

30% of scientists in this discipline score the same or lower.

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

Overview

N.B. Williamson is affiliated with Massey University in New Zealand and has contributed to research primarily within the fields of Agricultural and Biological Sciences, Biochemistry, Genetics and Molecular Biology, and Medicine.

The scientist's work encompasses several subfields, including Agronomy and Crop Science, Genetics, Food Science, Molecular Biology, and Oncology. Their research topics are diverse and include Milk Quality and Mastitis in Dairy Cows, Probiotics and Fermented Foods, Biopolymer Synthesis and Applications, Inflammatory Bowel Disease, Colorectal Cancer Surgical Treatments, Breast Implant and Reconstruction, and Reproductive Physiology in Livestock.

The following are recent research publications by N.B. Williamson:

  • Effect of bismuth subnitrate on in vitro growth of major mastitis pathogens, 2020, Journal of Dairy Science
  • Cellular Response of Neutrophils to Bismuth Subnitrate and Micronized Keratin Products In Vitro, 2020, Veterinary Sciences
  • (005) Young Ehlers-Danlos Syndrome Mice Have Increased Penile and Vaginal Adrenergic Contraction, 2025, The Journal of Sexual Medicine

Frequent co-authors collaborating with Williamson include:

  • Shirli Notcovich
  • Jimena Yapura
  • Y.H. Schukken
  • C. Heuer
  • Steve Flint

Among the venues where the scientist's work has been published are:

  • Journal of Dairy Science
  • Veterinary Sciences
  • The Journal of Sexual Medicine

Best Publications

  • A study of oestrous behaviour and oestrus detection methods in a large commercial dairy herd. I. The relative efficiency of methods of oestrus detection.

    NB Williamson;RS Morris;DC Blood;CM Cannon

  • Patterns of follicular development during periods of anovulation in pasture-fed dairy cows after calving

    S McDougall;C.R Burke;K.L Macmillan;N.B Williamson

  • Effect of Selenium and Iodine Supplementation on Growth Rate and on Thyroid and Somatotropic Function in Dairy Calves at Pasture

    Jeffrey Wichtel;A. L. Craigie;D. A. Freeman;H. Varela-Alvarez

  • A study of oestrous behaviour and oestrus detection methods in a large commercial dairy herd. II. Oestrous signs and behaviour patterns

    N B Williamson;R S Morris;D C Blood;C M Cannon

  • Calculating selected reproductive indices: recommendations of the American Association of Bovine Practitioners

    John Fetrow;David McClary;Robert Harman;Ken Butcher

  • Effect of intraruminal monensin capsules on reproductive performance and milk production of dairy cows fed pasture.

    D.P. Hayes;D.U. Pfeiffer;N.B. Williamson

  • Efficacy of a Neospora caninum killed tachyzoite vaccine in preventing abortion and vertical transmission in dairy cattle.

    J.F. Weston;C. Heuer;N.B. Williamson

  • A health program for commercial dairy herds. 1. Objectives and methods.

    Blood Dc;Morris Rs;Williamson Nb;Cannon Cm

  • Genomic typing of Streptococcus uberis isolates from cases of mastitis, in New Zealand dairy cows, using pulsed-field gel electrophoresis.

    Vicki L Douglas;Stan G Fenwick;Dirk U Pfeiffer;Norman B Williamson

  • A longitudinal study of Neospora caninum infection on a dairy farm in New Zealand.

    D. U. Pfeiffer;N. B. Williamson;M. P. Reichel;Jeffrey Wichtel

  • The use of PCR to detect Neospora caninum DNA in the blood of naturally infected cows.

    C.M Okeoma;N.B Williamson;W.E Pomroy;K.M Stowell

  • The incidence and aetiology of clinical bovine mastitis on 14 farms in Northland, New Zealand

    K R Petrovski;C Heuer;T J Parkinson;N B Williamson

  • GnRH induces ovulation of a dominant follicle in primiparous dairy cows undergoing anovulatory follicle turnover

    S. McDougall;N.B. Williamson;K.L. Macmillan

  • The role of Neospora caninum in three cases of unexplained ewe abortions in the southern North Island of New Zealand

    L. Howe;D.M. West;M.G. Collett;G. Tattersfield

  • A health program for commercial dairy herds. 4. Changes in mastitis prevalence

    R. S. Morris;D. C. Blood;N. B. Williamson;C. M. Cannon

  • The effect of intra-ruminal selenium pellets on growth rate, lactation and reproductive efficiency in dairy cattle.

    Jeffrey Wichtel;A. L. Craigie;H. Varela-Alvarez;N. B. Williamson

  • Some risk factors associated with clinical lameness in dairy herds in Minnesota and Wisconsin

    Scott J Wells;Ava M Trent;W. E. Marsh;N. B. Williamson

  • Improving Parity-Two Litter Size in Swine

    W.E.M. Morrow;A. D. Leman;N. B. Williamson;R. Moser

  • The effect of stocking rate and breed on the period of postpartum anoestrum in grazing dairy cattle

    McDougall S;Burke Cr;Williamson Nb;Macmillan Kl

  • The effect of estradiol benzoate administration on estrous response and synchronized pregnancy rate in dairy heifers after treatment with exogenous progesterone

    D. W. Hanlon;N. B. Williamson;Jeffrey Wichtel;I. J. Steffert

  • Automatic recording of daily walkover liveweight of dairy cattle at pasture in the first 100 days in milk.

    J.I. Alawneh;M.A. Stevenson;N.B. Williamson;N. Lopez-Villalobos

  • The effect of pretreatment with progesterone on the oestrous response to oestradiol-17Beta benzoate in the post-partum dairy cow

    McDougall S;Burke Cr;Macmillan Kl;Williamson Nb

  • Ovulatory responses and plasma luteinizing hormone concentrations in dairy heifers after treatment with exogenous progesterone and estradiol benzoate

    D. W. Hanlon;N. B. Williamson;Jeffrey Wichtel;I. J. Steffert

Frequent Co-Authors

Mark Stevenson
Mark Stevenson University of Melbourne
Nicolas Lopez-Villalobos
Nicolas Lopez-Villalobos Massey University
W.E. Pomroy
W.E. Pomroy Massey University
R.S. Morris
R.S. Morris Massey University
Dirk U. Pfeiffer
Dirk U. Pfeiffer City University of Hong Kong
K.L. Macmillan
K.L. Macmillan University of Melbourne
Scott McDougall
Scott McDougall Massey University
D.M. West
D.M. West Massey University
Cord Heuer
Cord Heuer Massey University
S. T. Morris
S. T. Morris Massey University

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Related Online Degrees & Career Pathways

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For professionals interested in supportive roles, exploring nasp approved online school psychology programs can provide insights into psychological assessment and intervention strategies, which can translate into better understanding animal and caretaker dynamics in clinical or educational environments.

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