Match tier Confirmed
Presence Current · Arkansas
Last published 2026
Sources OpenAlex · ORCID
Refreshed 2026-10-05

Brittni P Littlejohn

Affiliation confirmed via AI analysis of OpenAlex, ORCID, and web sources.

Assistant Professor Fayetteville

Also affiliated: Texas A&M University System (2015–2020); University of Arkansas System (2022–2026); Texas A&M University (2014–2023); Mississippi State University (2020)

Animal Science

6 h-index 65 pubs 140 cited

  • Animals
  • Cattle
  • Female
  • Male
  • Transportation
  • Pregnancy
  • DNA Methylation
  • Stress, Physiological
  • Melatonin
  • Weaning
  • Temperament
  • Dietary Supplements
  • Prenatal Exposure Delayed Effects
  • Hydrocortisone
  • Epigenomics

Biography and Research Information

OverviewAI-generated summary

Brittni P Littlejohn's research focuses on the physiological and molecular responses of animals to environmental stressors. Her work investigates the influence of factors such as diet, endophyte-infected forages, and maternal stress on animal health and development. A significant portion of her research utilizes DNA methylation patterns as a biomarker for stress and programming effects. She has studied these epigenetic changes in various tissues and leukocytes in Brahman cattle, exploring their potential as surrogates for stress-axis tissues. Additionally, her projects examine the impact of melatonin supplementation on uterine hemodynamics and offspring growth in beef cows grazing endophyte-infected tall fescue. Her work also extends to investigating the effects of gossypol from cottonseed meal on pig growth performance and blood parameters. Littlejohn has published 64 papers and has an h-index of 6 with 134 citations.

Metrics

  • h-index: 6
  • Publications: 65
  • Citations: 140

Positions

  • Senior Advisor for Strategy & Engagement 2025–present
    Texas A&M Agrilife Research Institute for Advancing Health through Agriculture ORCID
  • Associate Professor 2006–present
    Texas A&M University Animal Science ORCID
  • Assistant Professor Fayetteville publications 2021–2026
    University of Arkansas at Fayetteville Animal Science Listing
  • Associate Vice President for Research 2019–2023
    Texas A&M University ORCID
  • Instructor (Research Faculty appointment) 2002–2006
    The University of Texas MD Anderson Cancer Center Carcinogenesis ORCID
  • Postdoc 1997–2002
    University of Texas M D Anderson Cancer Center Science Park - Research Division, Dept of Carcinogenesis ORCID
  • Texas Aerospace Fellow 1996–1997
    NASA Johnson Space Center Radiation Biophysics ORCID
  • Texas Aerospace Fellow 1996–1997
    University of Houston Pharmacological and Pharmaceutical Sciences ORCID

Selected Publications

  • Integrated fetal testicular transcriptomic and epigenomic profiles during maternal nutrient restriction with dietary melatonin intervention (2026)
    Journal of Animal Science 1 citation DOI OpenAlex
  • 17 Effects of 6-day or 7-day CO-Synch + CIDR and fixed-time artificial insemination protocols on pregnancy rates of beef heifers and cows (2026)
    Reproduction Fertility and Development DOI OpenAlex
  • Maternal Melatonin Supplementation Modulates Placental DNA Methylation and Gene Expression in Nutrient-Restricted Cattle (2025)
    International Journal of Molecular Sciences DOI OpenAlex
  • 402 Awardee Talk: Stress-Induced Dna Methylation Changes and Their Implications in Livestock Production (2023)
    Journal of Animal Science DOI OpenAlex
  • 22 Influence of Cell-Mediated Immune Response Classification on Performance of Heat-Stressed Dairy Cattle (2023)
    Journal of Animal Science DOI OpenAlex
  • PSIII-5 Evaluation of Gnrh Administration day in the 7 & 7 Synch Protocol for Fixed-Timed Artificial Insemination in Multiparous Beef Cows (2022)
    Journal of Animal Science DOI OpenAlex
  • Exploring How Maternal Phosphorus Status Affects Calf Growth and Performance (2021)
    Discovery The Student Journal of Dale Bumpers College of Agricultural Food and Life Sciences DOI OpenAlex
  • PSIII-1 Influence of prenatal or postnatal exposure to gossypol from cottonseed meal on semen quality in commercial boars: a preliminary study on feral hog control (2021)
    Journal of Animal Science DOI OpenAlex
  • PSI-7 Comparison of 6-day versus 7-day CIDR protocol with GnRH and PGFα to synchronize crossbred beef cows for fixed-timed ai with sexed semen at two different times (2021)
    Journal of Animal Science DOI OpenAlex
  • 135 Effect of Gossypol from Cottonseed Meal on Growth Performance, Plasma Gossypol, and Complete Blood Cell Counts in Commercial Growing Pigs: A Preliminary Study on Feral Hog Control (2021)
    Journal of Animal Science 4 citations DOI OpenAlex
  • The Potential Use of DNA Methylation Patterns from Peripheral Blood Leukocytes as a Surrogate for Stress Axis Tissues in Mature Brahman Cows (2021)
    Journal of Animal Science 3 citations DOI OpenAlex
  • Evaluation of Peripheral Blood Leukocytes as a Surrogate for RNA-Seq Detection of Gene Expression in Stress Axis Tissues of Mature Brahman Cows (2021)
    Journal of Animal Science DOI OpenAlex
  • Evaluation of Prenatal Transportation Stress on the Number of Pituitary Corticotrophs in Mature Brahman Cows (2021)
    Journal of Animal Science DOI OpenAlex

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Collaboration Network

51 Collaborators 11 Institutions 2 Countries

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