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Photo: Alan Conley

Alan Conley- BVSc, MS, PhD, FRCVS
Professor and Researcher
Population Health & Reproduction

3223 VM3B
Davis, CA 95616

+1 530 752 2128


Research Focus

Comparative Reproduction [Livestock (cattle, sheep, pigs, horses), other Artiodactyla (peccaries), Human & Non-humans Primates, Reptiles (crocodilians), Carnivores (cats, dogs, hyenas), Birds]; Vertebrate sexual development and differentiation; Reproductive & molecular endocrinology; Steroidogenesis (molecular regulation & evolution)

Specialty Focus

Reproductive Physiology


1977 BVSc Veterinary Medicine, University of Melbourne, Australia
1986 MS Reproductive Physiology, Iowa State University, Ames, Iowa
1988 PhD Reproductive Physiology, Iowa State University, Ames, Iowa
1991 NIH Fellowship , Green Center for Reproductive Biology, University of Texas Southwestern Medical Center, Dallas

Honors and Awards

2013 Diploma of Fellowship, Royal College of Veterinary Surgeons (Nov)
2010-2011 Gordon Research Conference, Invited Speaker, Drug Metabolism (July)
2010-2011 Faculty Teaching Award, School of Veterinary Medicine, University of California, Davis
2010-2011 Keynote speaker, University of Kentucky Symposium on Reproductive Biology and Women's Health (May)
2006-2007 Favorite Teacher Award (Class of 2009)
2005-2006 Zoetis Excellence in Research Award, $1,000 (formerly Pfizer Award for Excellence in Research)
2002-2003 Chancellor’s Fellow for Excellence in Research and Teaching, $25,000


Member, Royal College of Veterinary Surgeons

Active Research Grants

Principal Investigator, Steroids & Parturition (NDSU), (Principal Investigator), USDA

Principal Investigator, CNPRC HD071998 Supplement Bales/Conley, (Principal Investigator), NIH

Most Recent 10 Publications

  • Link Icon 2014 Berger T, Conley AJ Reducing endogenous estrogen during prepuberal life does not affect boar libido or sperm fertilizing potential. Theriogenology,
  • Link Icon 2014 Phillips KA, Bales KL, Capitanio JP, Conley A, Czoty PW, 't Hart BA, Hopkins WD, Hu SL, Miller LA, Nader MA, Nathanielsz PW, Rogers J, Shively CA, Voytko ML Why primate models matter. Am J Primatol,
  • Link Icon 2014 Myers JE, Dujovne GA, Galuppo LD, Conley AJ, Moore PF, Mok MY, Aristizabal FA, Christensen BW Theriogenology question of the month. J Am Vet Med Assoc,
  • Link Icon 2014 de Jong MK, Ten Asbroek, EE, Sleiderink AJ, Conley AJ, Mol JA, Schoemaker NJ Gonadectomy-related adrenocortical tumors in ferrets demonstrate increased expression of androgen and estrogen synthesizing enzymes together with high inhibin expression. Domest Anim Endocrinol,
  • Link Icon 2014 Berger T, Conley A Reduced endogenous estrogen and hemicastration interact synergistically to increase porcine sertoli cell proliferation. Biol Reprod,
  • Link Icon 2014 Scholtz EL, Krishnan S, Ball BA, Corbin CJ, Moeller BC, Stanley SD, McDowell, KJ, Hughes AL, McDonnell DP, Conley AJ Pregnancy without progesterone in horses defines a second endogenous biopotent progesterone receptor agonist, 5a-dihydroprogesterone. Proc Natl Acad Sci U S A,
  • Link Icon 2014 Claes A, Ball BA, Corbin CJ, Conley AJ Anti-Mullerian hormone as a diagnostic marker for equine cryptorchidism in three cases with equivocal testosterone concentrations. J Equine Vet Sci,
  • Link Icon 2014 Ball BA, Conley AJ, Almeida J, Esteller-Vico A, Crabtree J, Munro C, Liu IKM A retrospective analysis of 2,253 cases submitted for endocrine diagnosis of possible granulosa cell tumors in mares. J Equine Vet Sci,
  • Link Icon 2014 Cunha GR, Risbridger G, Wang H, Place NJ, Grumbach M, Cunha TJ, Weldele M, Conley AJ, Barcellos D, Agarwal S, Bhargava A, Drea C, Hammond GL, Siiteri P, Coscia EM, McPhaul MJ, Baskin LS, Glickman SE Development of the external genitalia: perspectives from the spotted hyena (Crocuta crocuta). Differentiation,
  • Link Icon 2013 Aleman M, Pickles KJ, Conley AJ, Stanley S, Haggett E, Toth B, Madigan JE Abnormal plasma neuroactive progestagen derivatives in ill, neonatal foals presented to the neonatal intensive care unit. Equine Vet J,

Most Recent 5 Book Chapters

2014 Conley AJ, Reynolds LP: Steroidogenesis and the initiation of parturition, Juengel JL, Miyamoto A, Price C, Reynolds LP, Smith FM, Webb R, (ed), Reproduction in Domestic Ruminants VIII, Cambridge. 399-413.

2012 Conley A, Orr VN, Trainor BC, Berger T, Hughes A: Chapter 4: Multiple forms of aromatase in suiformes: tissue distribution, regulation, and functional significance, Balthazart J, Ball G, (ed), Brain Aromatase, Estrogens, and Behavior, Oxford. 64-88.

2002 Bird IM, Conley AJ: Chapter 1: Steroid biosynthesis: Enzymology, integration and control, Mason JI, (ed), Genetics of Steroid Biosynthesis and Function (Modern Genetics Book 6), New York. 1-36.

1999 Conley AJ, Walters KW: Aromatization, Knobil E, Neill JD, (ed), Encyclopedia of Reproduction, Volume I. 280-91.

1998 Geisert, RD, Conley AJ: Secretion and metabolism of steroids in subprimate mammals during pregnancy, Bazer FW, (ed), Endocrinology of Pregnancy, Totowa, NJ. 291-318.