World's Best Scientists 2026 revealed!

D-Index & Metrics

Animal Science and Veterinary

D-Index
50
Citations
9338
World Ranking
612
National Ranking
45

Masahito Oba 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 Masahito Oba 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: 153 publications — 58th percentile

58% of scientists in this discipline score the same or lower.

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

Masahito Oba 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 Masahito Oba 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: 50 D-Index — 81st percentile

81% of scientists in this discipline score the same or lower.

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

Overview

What is he best known for?

The fields of study he is best known for:

  • Internal medicine
  • Biochemistry
  • Enzyme

His scientific interests lie mostly in Rumen, Animal science, Dairy cattle, Dry matter and Neutral Detergent Fiber. A large part of his Rumen studies is devoted to Latin square. His Animal science study combines topics from a wide range of disciplines, such as Temperature gradient gel electrophoresis, Biochemistry, Firmicutes and Isovalerate.

His work focuses on many connections between Dairy cattle and other disciplines, such as Food science, that overlap with his field of interest in Forage and Ice calving. His Dry matter research integrates issues from Pyruvic acid, Citric acid, Lactation and Citric acid cycle, Metabolism. As a part of the same scientific family, Masahito Oba mostly works in the field of Neutral Detergent Fiber, focusing on Digestion and, on occasion, Silage.

His most cited work include:

  • Evaluation of the importance of the digestibility of neutral detergent fiber from forage: effects on dry matter intake and milk yield of dairy cows. (414 citations)
  • BOARD-INVITED REVIEW: The hepatic oxidation theory of the control of feed intake and its application to ruminants (365 citations)
  • Effects of brown midrib 3 mutation in corn silage on productivity of dairy cows fed two concentrations of dietary neutral detergent fiber: 1. Feeding behavior and nutrient utilization. (198 citations)

What are the main themes of his work throughout his whole career to date?

Masahito Oba mainly investigates Animal science, Dry matter, Rumen, Food science and Dairy cattle. His Animal science research is multidisciplinary, incorporating elements of Endocrinology, Forage, Agronomy and Internal medicine. His Dry matter study incorporates themes from Fatty acid, Lactation, Starch and Latin square.

His work deals with themes such as Hay, Digestion, Propionate and Acidosis, which intersect with Rumen. His Food science course of study focuses on Feed conversion ratio and Sunflower. His Dairy cattle research includes themes of Embryogenesis, Linolenic acid, Protein degradation and Animal fat.

He most often published in these fields:

  • Animal science (52.42%)
  • Dry matter (45.16%)
  • Rumen (44.35%)

What were the highlights of his more recent work (between 2015-2021)?

  • Animal science (52.42%)
  • Dry matter (45.16%)
  • Rumen (44.35%)

In recent papers he was focusing on the following fields of study:

The scientist’s investigation covers issues in Animal science, Dry matter, Rumen, Starch and Food science. His Animal science research incorporates themes from Meal, Fermentation, Insulin and Starter. His research in Dry matter intersects with topics in Productivity, Endocrinology, Lactation and Internal medicine.

His research investigates the connection between Rumen and topics such as Agronomy that intersect with problems in Latin square. Masahito Oba interconnects Metabolite and Ice calving in the investigation of issues within Starch. His work on Lactose and Fiber degradation as part of general Food science study is frequently linked to Microbial inoculation and Digestion, bridging the gap between disciplines.

Between 2015 and 2021, his most popular works were:

  • Assessment of microbiome changes after rumen transfaunation: implications on improving feed efficiency in beef cattle (36 citations)
  • The effects of feeding 3-nitrooxypropanol at two doses on milk production, rumen fermentation, plasma metabolites, nutrient digestibility, and methane emissions in lactating Holstein cows (29 citations)
  • Effect of increasing dietary nonfiber carbohydrate with starch, sucrose, or lactose on rumen fermentation and productivity of lactating dairy cows. (20 citations)

In his most recent research, the most cited papers focused on:

  • Internal medicine
  • Enzyme
  • Biochemistry

Masahito Oba mainly focuses on Animal science, Dry matter, Rumen, Beef cattle and Food science. His Animal science research includes elements of Meal, Internal medicine, Area under the curve, Endocrinology and Latin square. His research integrates issues of Fermentation, Lactation and Starch in his study of Dry matter.

The various areas that Masahito Oba examines in his Rumen study include Agronomy, Acidosis, Carbohydrate, Fatty acid and Digestion. His Beef cattle research integrates issues from Urea, Forage and Methane. His work deals with themes such as Microbiome and Microbial ecology, which intersect with Food science.

Best Publications

  • Evaluation of the importance of the digestibility of neutral detergent fiber from forage: effects on dry matter intake and milk yield of dairy cows.

    M. Oba;M.S. Allen

  • BOARD-INVITED REVIEW: The hepatic oxidation theory of the control of feed intake and its application to ruminants

    M. S. Allen;B. J. Bradford;M. Oba

  • Effects of brown midrib 3 mutation in corn silage on productivity of dairy cows fed two concentrations of dietary neutral detergent fiber: 1. Feeding behavior and nutrient utilization.

    M. Oba;M.S. Allen

  • Effects of Corn Grain Conservation Method on Feeding Behavior and Productivity of Lactating Dairy Cows at Two Dietary Starch Concentrations

    M. Oba;M.S. Allen

  • Effects of sampling location and time, and host animal on assessment of bacterial diversity and fermentation parameters in the bovine rumen.

    M. Li;G.B. Penner;E. Hernandez-Sanabria;M. Oba

  • Effects of brown midrib 3 mutation in corn silage on dry matter intake and productivity of high yielding dairy cows.

    M. Oba;M.S. Allen

  • Epithelial Capacity for Apical Uptake of Short Chain Fatty Acids Is a Key Determinant for Intraruminal pH and the Susceptibility to Subacute Ruminal Acidosis in Sheep

    Gregory B Penner;Jörg R Aschenbach;Gotthold Gäbel;Reiko Rackwitz

  • Effect of dietary forage to concentrate ratio on volatile fatty acid absorption and the expression of genes related to volatile fatty acid absorption and metabolism in ruminal tissue.

    G.B. Penner;M. Taniguchi;L.L. Guan;K.A. Beauchemin

  • Effects of Brown Midrib 3 Mutation in Corn Silage on Productivity of Dairy Cows Fed Two Concentrations of Dietary Neutral Detergent Fiber: 3. Digestibility and Microbial Efficiency

    M. Oba;M.S. Allen

  • Effects of corn grain conservation method on ruminal digestion kinetics for lactating dairy cows at two dietary starch concentrations

    M. Oba;M.S. Allen

  • Effects of Diet Fermentability on Efficiency of Microbial Nitrogen Production in Lactating Dairy Cows

    M. Oba;M.S. Allen

  • Increasing dietary sugar concentration may improve dry matter intake, ruminal fermentation, and productivity of dairy cows in the postpartum phase of the transition period.

    G.B. Penner;M. Oba

  • Review: Effects of feeding sugars on productivity of lactating dairy cows

    Masahito Oba

  • The effects of feeding 3-nitrooxypropanol on methane emissions and productivity of Holstein cows in mid lactation

    J. Haisan;Y. Sun;L.L. Guan;K.A. Beauchemin

  • Changes in bacterial diversity associated with epithelial tissue in the beef cow rumen during the transition to a high-grain diet.

    Yanhong Chen;Gregory B. Penner;Meiju Li;Masahito Oba

  • Diets enriched in unsaturated fatty acids enhance early embryonic development in lactating Holstein cows

    G. Thangavelu;M.G. Colazo;D.J. Ambrose;M. Oba

  • Relationship between rumen methanogens and methane production in dairy cows fed diets supplemented with a feed enzyme additive.

    M. Zhou;Y.-H. Chung;K.A. Beauchemin;L. Holtshausen

  • Effects of barley grain processing on productivity of cattle

    M. Dehghan-banadaky;R. Corbett;M. Oba

  • The potential of 3-nitrooxypropanol to lower enteric methane emissions from beef cattle.

    A. Romero-Perez;E. K. Okine;S. M. McGinn;L. L. Guan

  • Effect of calf starter feeding on gut microbial diversity and expression of genes involved in host immune responses and tight junctions in dairy calves during weaning transition

    Nilusha Malmuthuge;Meiju Li;Laksiri A. Goonewardene;Masahito Oba

  • Variation of bacterial communities and expression of Toll-like receptor genes in the rumen of steers differing in susceptibility to subacute ruminal acidosis.

    Yanhong Chen;Masahito Oba;Le Luo Guan

  • Assessment of microbiome changes after rumen transfaunation: implications on improving feed efficiency in beef cattle

    Mi Zhou;Yong-Jia Peng;Yanhong Chen;Christen M. Klinger

  • Effects of feeding a calf starter on molecular adaptations in the ruminal epithelium and liver of Holstein dairy calves.

    A.H. Laarman;A.L. Ruiz-Sanchez;T. Sugino;L.L. Guan

  • Intraruminal Infusion of Propionate Alters Feeding Behavior and Decreases Energy Intake of Lactating Dairy Cows

    Masahito Oba;Michael S. Allen

  • Short communication: Effect of calf starter on rumen pH of Holstein dairy calves at weaning

    A.H. Laarman;M. Oba

  • Evaluation of triticale dried distillers grains with solubles as a substitute for barley grain and barley silage in feedlot finishing diets

    K. T. Wierenga;T. A. McAllister;D. J. Gibb;A. V. Chaves

  • Effects of hydrolyzable tannin with or without condensed tannin on methane emissions, nitrogen use, and performance of beef cattle fed a high-forage diet.

    Isaac A Aboagye;Isaac A Aboagye;Masahito Oba;Alejandro Ramon Castillo;Karen M Koenig

  • Effect of parity and stage of lactation on feed sorting behavior of lactating dairy cows

    T.J. DeVries;L. Holtshausen;M. Oba;K.A. Beauchemin

Frequent Co-Authors

Karen A. Beauchemin
Karen A. Beauchemin Agriculture and Agriculture-Food Canada
Michael S. Allen
Michael S. Allen Michigan State University
Tim A. McAllister
Tim A. McAllister Agriculture and Agriculture-Food Canada
Le Luo Guan
Le Luo Guan University of Alberta
Michael A. Steele
Michael A. Steele University of Guelph
Vern S. Baron
Vern S. Baron Agriculture and Agriculture-Food Canada
Erasmus K. Okine
Erasmus K. Okine University of Lethbridge
W.Z. Yang
W.Z. Yang Agriculture and Agriculture-Food Canada
Trevor W. Alexander
Trevor W. Alexander Agriculture and Agriculture-Food Canada
Alexandre V. Chaves
Alexandre V. Chaves University of Sydney

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For those interested in a career working with animals, exploring careers with animals that pay well can provide valuable insights into rewarding job options beyond traditional veterinary roles. Specializing in animal science often leads to diverse paths, including wildlife conservation, animal nutrition, and research.

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Behavioral expertise is also crucial in animal-related careers. Earning a behavioral analysis degree prepares professionals to work in behavior modification and training, enhancing animal welfare through science-based approaches. Combining these online degrees provides diverse opportunities for career growth in animal science and veterinary fields.

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