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Animal Science and Veterinary
Canada
2026

D-Index & Metrics

Animal Science and Veterinary

D-Index
116
Citations
58200
World Ranking
5
National Ranking
1

Tim A. McAllister 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 Tim A. McAllister 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: 1,007 publications — 100th percentile

100% of scientists in this discipline score the same or lower.

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

Tim A. McAllister 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 Tim A. McAllister 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: 116 D-Index — 100th percentile

100% of scientists in this discipline score the same or lower.

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

Research.com Recognitions

  • 2026 - Research.com Animal Science and Veterinary in Canada Leader Award
  • 2025 - Research.com Animal Science and Veterinary in Canada Leader Award
  • 2023 - Research.com Animal Science and Veterinary in Canada Leader Award
  • 2022 - Research.com Animal Science and Veterinary in Canada Leader Award
  • 2018 - Canadian Society of Animal Science Fellowship Award
  • 2010 - Ruminant Nutrition Research Award, American Society of Animal Science
  • 2008 - Excellence in Nutrition and Meat Sciences, Canadian Society of Animal Science
  • 2004 - Technical Innovation in Enhancing Production of Safe Affordable Food, Canadian Society of Animal Science
  • 1996 - Young Scientist Award, Canadian Society of Animal Science

Overview

Tim A. McAllister is affiliated with Agriculture and Agriculture-Food Canada in Canada, focusing on research that spans agricultural and biological sciences with particular attention to biochemistry, genetics, and molecular biology.

Their research covers a range of topics related to animal science, with key emphasis on ruminant nutrition and digestive physiology, agriculture sustainability and environmental impact, and microbial interactions. Specific areas of work include:

  • Ruminant Nutrition and Digestive Physiology
  • Agriculture Sustainability and Environmental Impact
  • Bacteriophages and microbial interactions
  • Microbial infections and disease research
  • Gut microbiota and health
  • Pharmaceutical and Antibiotic Environmental Impacts
  • Aquaculture disease management and microbiota

The scientist's publication record includes contributions to multiple journals, with frequent publications in:

  • Journal of Animal Science
  • Canadian Journal of Animal Science
  • Microorganisms
  • Frontiers in Microbiology
  • Frontiers in Veterinary Science

Among recent papers authored or co-authored by McAllister are:

  • Surveillance of Enterococcus spp. reveals distinct species and antimicrobial resistance diversity across a One-Health continuum, 2020, Scientific Reports
  • Invited review: Current enteric methane mitigation options, 2022, Journal of Dairy Science
  • Machine Learning for Antimicrobial Resistance Prediction: Current Practice, Limitations, and Clinical Perspective, 2022, Clinical Microbiology Reviews
  • Strategies to improve the efficiency of beef cattle production, 2020, Canadian Journal of Animal Science
  • Utilization of by-products and food waste in livestock production systems: a Canadian perspective, 2021, Animal Frontiers

Frequent co-authors include:

  • Kim Stanford
  • Rahat Zaheer
  • Gabriel O Ribeiro
  • Kim Ominski
  • G.B. Penner

McAllister's work intersects multiple subfields of study, notably:

  • Agronomy and Crop Science
  • Ecology
  • Molecular Biology
  • Plant Science
  • Infectious Diseases

Their academic career has been recognized with several awards, including:

  • Canadian Society of Animal Science Fellowship Award, 2018
  • Ruminant Nutrition Research Award, American Society of Animal Science, 2010
  • Excellence in Nutrition and Meat Sciences, Canadian Society of Animal Science, 2008
  • Technical Innovation in Enhancing Production of Safe Affordable Food, Canadian Society of Animal Science, 2004
  • Young Scientist Award, Canadian Society of Animal Science, 1996

Best Publications

  • Rumen microbial community composition varies with diet and host, but a core microbiome is found across a wide geographical range

    Gemma Henderson;Faith Cox;Siva Ganesh;Arjan Jonker

  • Nutritional management for enteric methane abatement: A review

    K. A. Beauchemin;M. Kreuzer;F. O'Mara;T. A. McAllister

  • Silage review: Recent advances and future uses of silage additives

    R.E. Muck;E.M.G. Nadeau;T.A. McAllister;F.E. Contreras-Govea

  • A review of plant-derived essential oils in ruminant nutrition and production

    C. Benchaar;S. Calsamiglia;A.V. Chaves;G.R. Fraser

  • Microbial attachment and feed digestion in the rumen.

    T A McAllister;H D Bae;G A Jones;K J Cheng

  • Redirecting rumen fermentation to reduce methanogenesis

    T. A. McAllister;C. J. Newbold

  • Effects of Sainfoin (Onobrychis viciifolia Scop.) Condensed Tannins on Growth and Proteolysis by Four Strains of Ruminal Bacteria

    G. A. Jones;T. A. McAllister;A. D. Muir;K.-J. Cheng

  • Use of condensed tannin extract from quebracho trees to reduce methane emissions from cattle.

    K. A. Beauchemin;S. M. McGinn;T. F. Martinez;T. A. McAllister

  • Life cycle assessment of greenhouse gas emissions from beef production in western Canada: A case study

    Karen A. Beauchemin;H. Henry Janzen;Shannan M. Little;Tim A. McAllister

  • Dietary, environmental and microbiological aspects of methane production in ruminants

    T. A. McAllister;K.-J. Cheng;E. K. Okine;G. W. Mathison

  • Review: Ammonia emissions from dairy farms and beef feedlots1

    A. N. Hristov;M. Hanigan;A. Cole;R. Todd

  • Addressing global ruminant agricultural challenges through understanding the rumen microbiome: past, present and future

    Sharon A. Huws;Christopher J. Creevey;Linda B. Oyama;Itzhak Mizrahi

  • Characterization of the core rumen microbiome in cattle during transition from forage to concentrate as well as during and after an acidotic challenge.

    Renee M. Petri;Tyler Schwaiger;Greg B. Penner;Karen A. Beauchemin

  • Effect of the Protein Matrix on the Digestion of Cereal Grains by Ruminal Microorganisms

    T A McAllister;R C Phillippe;L M Rode;K J Cheng

  • A review of the effects of forage condensed tannins on ruminal fermentation and bloat in grazing cattle

    L. R. McMahon;T. A. McAllister;B. P. Berg;W. Majak

  • Update on Cryptosporidium and Giardia infections in cattle

    Merle E Olson;Ryan M O'Handley;Brenda J Ralston;Timothy A McAllister

  • Effect of Yucca schidigera on ruminal fermentation and nutrient digestion in heifers.

    A N Hristov;T A McAllister;F H Van Herk;K J Cheng

  • Giardia and Cryptosporidium in Canadian farm animals

    M.E. Olson;C.L. Thorlakson;L. Deselliers;D.W. Morck

  • Dietary mitigation of enteric methane from cattle.

    Unknown

  • Effect of rapid or gradual grain adaptation on subacute acidosis and feed intake by feedlot cattle.

    D. W. Bevans;K. A. Beauchemin;K. S. Schwartzkopf-Genswein;J. J. McKinnon

  • Effects of garlic and juniper berry essential oils on ruminal fermentation and on the site and extent of digestion in lactating cows.

    W.Z. Yang;C. Benchaar;B.N. Ametaj;A.V. Chaves

  • Duration of naturally acquired giardiosis and cryptosporidiosis in dairy calves and their association with diarrhea.

    R M O'Handley;C Cockwill;T A McAllister;M Jelinski

  • Digestion, ruminal fermentation, ciliate protozoal populations, and milk production from dairy cows fed cinnamaldehyde, quebracho condensed tannin, or Yucca schidigera saponin extracts.

    C. Benchaar;T.A. McAllister;P.Y. Chouinard

  • Distribution of sulfamethazine, chlortetracycline and tylosin in manure and soil of Canadian feedlots after subtherapeutic use in cattle.

    Marc-Oliver Aust;Frauke Godlinski;Frauke Godlinski;Greg R. Travis;Xiying Hao

Frequent Co-Authors

Kim Stanford
Kim Stanford University of Lethbridge
Karen A. Beauchemin
Karen A. Beauchemin Agriculture and Agriculture-Food Canada
Yuxi Wang
Yuxi Wang Agriculture and Agriculture-Food Canada
Trevor W. Alexander
Trevor W. Alexander Agriculture and Agriculture-Food Canada
John J. McKinnon
John J. McKinnon University of Saskatchewan
Alexandre V. Chaves
Alexandre V. Chaves University of Sydney
Michael E. R. Dugan
Michael E. R. Dugan Agriculture and Agriculture-Food Canada
W.Z. Yang
W.Z. Yang Agriculture and Agriculture-Food Canada
Jennifer L. Aalhus
Jennifer L. Aalhus Agriculture and Agriculture-Food Canada
Merle E. Olson
Merle E. Olson University of Calgary

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Related Online Degrees & Career Pathways

Exploring animal science and veterinary fields often leads students to consider complementary disciplines that enhance their skill set and career opportunities. Psychology and counseling are among these areas, as understanding behavior plays a crucial role in animal care and management. For those interested in human-animal interaction or therapy, pursuing nasp accredited online school psychology programs can provide foundational knowledge about developmental and behavioral challenges.

Additionally, mental health and supportive care professions offer career paths closely related to veterinary and animal care, particularly in therapeutic environments. Those looking to deepen their clinical expertise might explore apa accredited psyd programs online, which focus on psychological services without the barrier of GRE requirements.

Understanding addiction and family dynamics can also be instrumental in community-based animal welfare programs or veterinary social work. Programs such as addiction counseling online degree and marriage and family counseling degree online prepare students for roles that support individuals and families, often intersecting with animal-assisted interventions.

Combining animal science with these allied fields can open diverse career pathways, particularly in research, therapy, and community health, enhancing both professional impact and job flexibility.

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