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Dickson Varner

Professor of Equine Theriogenology & Pin Oak Stud Chair of Stallion Reproductive Studies

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Phone: (979) 845-3541

Mailstop: 4475

Department: VLCS

Photo of Varner, Dickson


  • M.S. Veterinary Anatomy, Texas A&M University 1990
  • D.V.M. Veterinary Medicine, University of Missouri 1978
  • B.S. Agriculture, University of Missouri 1976


  • Kentucky Veterinary Medical License: NS 1098
  • Diplomate, American College of Theriogenologists
  • Texas Veterinary Medical License: 11672

Scholarly Interests

Equine theriogenology. Fertility probes for stallions; in-vitro preservation of equine spermatozoa; capacitation of equine spermatozoa; assisted reproductive techniques; and subfertility in stallions.


The effect of two levels of hemospermia on stallion fertility
Turner CE, Walbornn SR, Blanchard TL, Varner DD, Brinsko SP, LaCaze KA, Teague SR, Love CC
Theriogenology. 2016 86:1399-1402.
Mitochondrial oxygen consumption is a unique indicator of stallion spermatozoal health and varies with cryopreservation media
Darr CR, Cortopassi GA, Datta S, Varner DD, Meyers SA
Theriogenology. 2016 86:1383-1393.
Lactate and pyruvate are major sources of energy for stallion sperm with dose effects on mitochondrial function, motility, and ROS production
Darr CR, Varner DD, Teague S, Cortopassi GA, Datta S, Meyers SA
Biology of Reproduction. 2016 95:1-11.
Approaches to breeding soundness examination and interpretation of results
Varner DD
Journal of Equine Veternary Science. 2016 43:S37-44.
Overview of selected pathologic conditions in breeding stallions: hemosperimia, poor semen quality, enlarged scrotum
Varner DD, Schlaefer DH
Proceedings, American Association of Equine Practitioners. 2015 61:257-267.
The relationship between sperm quality in cool-shipped semen and embryo recovery rate in horses
Love CC, Noble JK, Standridge SA, Bearden CT, Blanchard TL, Varner DD, Cavinder CA
Theriogenology. 2015 84:1587-1593.
Sperm DNA assays and their relationship to sperm motility and morphology in bulls
Serafini R, Romano JE, Varner DD, Di Palo R, Love CC
Anim Reprod Sci. 2015 159:77-86.
Sperm DNA quality evaluated by comet assay and sperm chromatin structure assay in stallions after unilateral orchiectomy
Serafini R, Varner DD, Bissett W Dr, Blanchard TL, Teague SR, Love CC
Theriogenology. 2015 84:833-837.
The effects of urine concentration, and cushion centrifugation to remove urine, on the quality of cool-stored stallion sperm
Voge J, Varner DD, Blanchard TL, Meschini M, Turner C, Teague SR, Brinsko SP, Love CC
Theriogenology. 86:1294-1298.

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