World's Best Scientists 2026 revealed!

D-Index & Metrics

Animal Science and Veterinary

D-Index
33
Citations
11285
World Ranking
1940
National Ranking
157

I. McDonald 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 I. McDonald 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: 78 publications — 13th percentile

13% of scientists in this discipline score the same or lower.

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

I. McDonald 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 I. McDonald 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: 33 D-Index — 39th percentile

39% of scientists in this discipline score the same or lower.

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

Overview

I. McDonald is affiliated with the University of Aberdeen in the United Kingdom. Their recent academic contributions focus on educational psychology, with published work examining complex discourses and psychological perspectives related to school exclusion.

The published output includes the following paper:

  • Excluded from school: complex discourses and psychological perspectives (second edition), 2025, Educational Psychology in Practice

Publication venues where I. McDonald's work appears include:

  • Educational Psychology in Practice

The research topics addressed in their work center around educational psychology themes, particularly those involving school exclusion and associated psychological factors.

There are no frequently collaborating co-authors linked to this profile, indicating that their work may be conducted independently or with varied collaborators.

Best Publications

  • The estimation of protein degradability in the rumen from incubation measurements weighted according to rate of passage

    E. R. Ørskov;I. McDonald

  • A revised model for the estimation of protein degradability in the rumen

    I. McDonald

  • Rates of rumen fermentation in relation to ammonia concentration

    A. Z. Mehrez;E. R. Ørskov;I. McDonald

  • Studies on reproduction in prolific ewes

    J. J. Robinson;I. McDonald;C. Fraser;R. M. J. Crofts

  • Digestion of concentrates in sheep. 4. The effects of urea on digestion, nitrogen retention and growth in young lambs.

    E. R. Ørskov;C. Fraser;I. McDonald

  • The effect of plane of nutrition on the carcasses of pigs and lambs when variations in fat content are excluded

    F. W. H. Elsley;I. McDonald;V. R. Fowler

  • The effects of protein degradability and food intake on milk yield and composition in cows in early lactation.

    E. R. Ørskov;G. W. Reid;I. McDonald

  • Effects of body fatness at lambing and diet in lactation on body tissue loss, feed intake and milk yield of ewes in early lactation

    R. T. Cowan;J. J. Robinson;I. McDonald;R. Smart

  • Studies on reproduction in prolific ewes. 4. Sequential changes in the maternal body during pregnancy

    J. J. Robinson;I. McDonald;I. McHattie;K. Pennie

  • The response of lactating sows and their litters to different dietary energy allowances. 1. Milk yield and composition, reproductive performance of sows and growth rate of litters

    J. F. O'Grady;F. W. H. Elsley;R. M. MacPherson;I. McDonald

  • The effect of changes in the amount of energy infused as volatile fatty acids on the nitrogen retention and creatinine excretion of lambs wholly nourished by intragastric infusion.

    F. D. DeB. Hovell;E. R. Ørskov;N. A. MacLeod;I. McDonald

  • Comparison by direct animal calorimetry of the net energy values of an early and a late season growth of herbage

    J. L. Corbett;J. P. Langlands;I. McDonald;J. D. Pullar

  • The nutrition of the early weaned lamb:III. The effect of ad libitum intake of diets varying in protein concentration on performance and on body composition at different live weights

    E. R. Ørskov;I. McDonald;C. Fraser;Elizabeth L. Corse

  • Digestion of concentrates in sheep. 2. The effect of urea or fish-meal supplementation of barley diets on the apparent digestion of protein, fat, starch and ash in the rumen, the small intestine and the large intestine, and calculation of volatile fatty acid production.

    E. R. Ørskov;C. Fraser;I. McDonald

  • Nutritional studies on East African herbivores. 2. Losses of nitrogen in the faeces.

    Pamela Arman;D. Hopcraft;I. McDonald

  • Estimates of the energy required for maintenance by adult sheep 1. Housed sheep

    J. P. Langlands;J. L. Corbett;I. McDonald;J. D. Pullar

  • The nutrition of the early weaned lamb. IV. Effects on growth rate, food utilization and body composition of changing from a low to a high protein diet

    E. R. Ørskov;I. McDonald;D. A. Grubb;K. Pennie

  • A comparison of the live-weight changes, nitrogen retention and carcass composition of pregnant and non-pregnant gilts

    F. W. H. Elsley;D. M. Anderson;I. McDonald;R. M. MacPherson

  • Digestion of concentrates in sheep. 3. Effects of rumen fermentation of barley and maize diets on protein digestion.

    E. R. Ørskov;C. Fraser;I. McDonald

  • Stomach function in relation to a scour syndrome in the piglet.

    F. White;G. Wenham;G. A. M. Sharman;A. S. Jones

  • Studies on reproduction in prolific ewes. 6. The efficiency of energy utilization for conceptus growth.

    J. J. Robinson;I. McDonald;C. Fraser;J. G. Gordon

Frequent Co-Authors

E. R. Ørskov
E. R. Ørskov James Hutton Institute

If you think any of the details on this page are incorrect, let us know.

Report an issue

We appreciate your kind effort to assist us to improve this page, it would be helpful providing us with as much detail as possible in the text box below:

Related Online Degrees & Career Pathways

Exploring careers in Animal Science and Veterinary fields often leads to diverse opportunities in related health and behavioral sciences. Students interested in animal behavior and its impact on human psychology may find programs like nasp accredited school psychology programs valuable for understanding psychological development in educational settings.

For those aiming to deepen clinical expertise without traditional testing barriers, online psyd programs accredited by apa offer flexible pathways to doctoral-level training in psychology. This can complement veterinary knowledge when addressing animal-assisted therapy or emotional support animals.

Career paths might also extend into counseling, where professionals support individuals coping with substance use challenges. Online options like addiction counseling degree online counseling programs prepare graduates to assist clients in recovery, often integrating holistic approaches to wellness beneficial in veterinary contexts.

Additionally, programs such as online marriage and family therapy graduate programs offer specialized training for addressing family dynamics, which can be crucial when considering the human-animal bond and its influence on therapy outcomes.

Best Scientists Citing I. McDonald