World's Best Scientists 2026 revealed!

D-Index & Metrics

Animal Science and Veterinary

D-Index
47
Citations
8686
World Ranking
723
National Ranking
230

R A Zinn 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 R A Zinn 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: 189 publications — 71st percentile

71% of scientists in this discipline score the same or lower.

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

R A Zinn 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 R A Zinn 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: 47 D-Index — 77th percentile

77% of scientists in this discipline score the same or lower.

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

Overview

R A Zinn is affiliated with the University of California, Davis in the United States. Their research primarily spans the field of Agricultural and Biological Sciences, with a significant focus on Animal Science and Zoology, Agronomy and Crop Science, Small Animals, Genetics, and Plant Science.

The scientist has published extensively on topics related to ruminant nutrition and digestive physiology, animal nutrition and physiology, and the effects of environmental stressors on livestock. Additional research areas include rabbits' nutrition, reproduction and health, genetic and phenotypic traits in livestock, reproductive physiology in livestock, and studies on animal behavior and welfare.

Among recent publications, several papers stand out, including:

  • Effects of single or combined supplementation of probiotics and prebiotics on ruminal fermentation, ruminal bacteria and total tract digestion in lambs (2021, Small Ruminant Research)
  • The Effects of Single or Combined Supplementation of Probiotics and Prebiotics on Growth Performance, Dietary Energetics, Carcass Traits, and Visceral Mass in Lambs Finished under Subtropical Climate Conditions (2021, Biology)
  • The effects of feeding a standardized mixture of essential oils vs monensin on growth performance, dietary energy and carcass characteristics of lambs fed a high-energy finishing diet (2021, Small Ruminant Research)
  • Blend of Essential Oils Supplemented Alone or Combined with Exogenous Amylase Compared with Virginiamycin Supplementation on Finishing Lambs: Performance, Dietary Energetics, Carcass Traits, and Nutrient Digestion (2021, Animals)
  • Interaction of early metabolizable protein supplementation and virginiamycin on feedlot growth performance and carcass characteristics of calf-fed Holstein steers (2021, Translational Animal Science)

R A Zinn frequently collaborates with other researchers, including A. Plascencia, A. Barreras, Brooke C Latack, Alfredo Estrada-Angulo, and Jesús D. Urías-Estrada.

The scientist's work has been published in several journals, with multiple contributions in:

  • Journal of Animal Science
  • Animals
  • Translational Animal Science
  • Small Ruminant Research
  • Canadian Journal of Animal Science

Best Publications

  • A RAPID PROCEDURE FOR PURINE MEASUREMENT AND ITS USE FOR ESTIMATING NET RUMINAL PROTEIN SYNTHESIS

    R. A. Zinn;F. N. Owens

  • Limits to Starch Digestion in the Ruminant Small Intestine1,2

    Unknown

  • An evaluation of ruminally degradable intake protein and metabolizable amino acid requirements of feedlot calves.

    Unknown

  • Flaking corn: processing mechanics, quality standards, and impacts on energy availability and performance of feedlot cattle

    Unknown

  • Comparative feeding value of supplemental fat in finishing diets for feedlot steers supplemented with and without monensin.

    Zinn Ra

  • Influence of flake density on the comparative feeding value of steam-flaked corn for feedlot cattle.

    R. A. Zinn

  • Influence of level and source of dietary fat on its comparative feeding value in finishing diets for feedlot steers: metabolism.

    R. A. Zinn

  • Influence of Level and Source of Dietary Fat on Its Comparative Feeding Value in Finishing Diets for Steers: Feedlot Cattle Growth and Performance

    R. A. Zinn

  • Interaction of Whole Cottonseed and Supplemental Fat on Digestive Function in Cattle

    R A Zinn;A Plascencia

  • Influence of processed corn grain in diets of dairy cows on digestion of nutrients and milk composition.

    L.M. Crocker;E.J. DePeters;J.G. Fadel;H. Perez-Monti

  • B-vitamin supplementation of diets for feedlot calves.

    R. A. Zinn;F. N. Owens;R. L. Stuart;J. R. Dunbar

  • Influence of lasalocid and monensin plus tylosin on comparative feeding value of steam-flaked versus dry-rolled corn in diets for feedlot cattle.

    Zinn Ra

  • Influence of steaming time on site of digestion of flaked corn in steers.

    R A Zinn

  • Influences of saturation ratio of supplemental dietary fat on digestion and milk yield in dairy cows.

    C.D. Avila;E.J. DePeters;H. Perez-Monti;S.J. Taylor

  • Effects of forage level on the comparative feeding value of supplemental fat in growing-finishing diets for feedlot cattle.

    R A Zinn;A Plascencia

  • Influence of flake density on the feeding value of steam-processed corn in diets for lactating cows

    A Plascencia;R A Zinn

  • Effects of Corn Processing on the Site and Extent of Digestion in Lactating Cows

    M.T. Joy;E.J. DePeters;J.G. Fadel;R.A. Zinn

  • Influence of processing on the comparative feeding value of barley for feedlot cattle.

    Zinn Ra

  • Interaction of Forage Level and Monensin in Diets for Feedlot Cattle on Growth Performance and Digestive Function

    R A Zinn;A Plascencia;R Barajas

  • Influence of ruminal biohydrogenation on the feeding value of fat in finishing diets for feedlot cattle.

    Unknown

  • Influence of free fatty acid content on the feeding value of yellow grease in finishing diets for feedlot cattle.

    A Plascencia;M Estrada;R A Zinn

  • Influence of sodium bicarbonate and monensin on utilization of a fat-supplemented, high-energy growing-finishing diet by feedlot steers.

    R A Zinn;J L Borques

  • Interaction of feed intake level on comparative ruminal and total tract digestion of dry-rolled and steam-flaked corn.

    R A Zinn;C F Adam;M S Tamayo

  • Relationship between body weight and level of fat supplementation on fatty acid digestion in feedlot cattle.

    A. Plascencia;G. D. Mendoza;C. Vásquez;R. A. Zinn

Frequent Co-Authors

Edward J. DePeters
Edward J. DePeters University of California, Davis
James G. Fadel
James G. Fadel University of California, Davis
Margalida Joy
Margalida Joy Centro de Investigación y Tecnología Agroalimentaria de Aragón

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By exploring these interdisciplinary online degrees, students can complement their animal science and veterinary knowledge with skills that enhance their career versatility and impact.

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