Bill Silvia
William J. Silvia, Ph. D.
Professor, Reproductive Physiology; Dairy
Department of Animal Sciences
University of Kentucky
405 W.P. Garrigus Building
Lexington, KY 40546-0215Phone: (859) 257-7545
FAX: (859) 323-1027
E-mail: wsilvia@uky.edu
EDUCATION
Ph.D. Colorado State University, 1980-1985, Reproductive Endocrinology
M.S. West Virginia University, 1978-1980, Reproductive Physiology
B.S. Cornell University, 1974-1978, Animal Science
RESEARCH INTERESTS
Formation, maintenance and treatment of ovarian follicular cysts
Endocrine regulation of estrous expression in dairy cows
Endocrine factors that influence fertility in dairy cows
Endocrine regulation of uterine prostaglandin secretion in domestic livestock
Recent Review Articles and Book Chapters
Silvia,W.J., T.B. Hatler, A.M. Nugent and L.F. Laranja da Fonseca. 2002. Ovarian follicular cysts: An abnormality in folliculogenesis. Domestic Animal Endocrinology: 23:167-177.
Silvia, W.J. 1999. The role of uterine and ovarian hormones in luteolysis: a comparison among species. Reprod. Domest. Anim. 34:317-328.
Silvia, W.J. 1999. Eicosanoids. in Encyclopedia of Reproduction (E. Knobil, J. Neill eds). Academic Press Inc., New York. pp 991-1001.
Recent Publications
Hatler, T.B., S.H. Hayes, L.H. Anderson, and W.J. Silvia. Effect of a single injection of progesterone on ovarian follicular cysts in lactating dairy cows.ÿThe Veterinary Journal 172:329-333. 2006.
Kasimanickam, R., R.L. Nebel, I.D. Peeler, W.J. Silvia, K.T. Wolf, A.J. McAllister, and B.G. Cassell.ÿBreed differences in competitive indices of Holstein and Jersey bulls and their association with sperm DNA fragmentation indices and plasma membrane integrity.ÿ Theriogenology 66:1307-1315. 2006.
Silvia, W.J. Addressing the decline in reproductive performance of lactating dairy cows: a researcher’s perspective. Veterinary Sciences Tomorrow (on line journal) Vol. 3: http://www.vetscite.org/cgi-bin/pw.exe/Issue4/000068/000068.htm. 2003.
Hatler,T.B., A.M. Nugent, S.H. Hayes, D.W. Yelton and W.J. Silvia. The relationship between endogenous progesterone and follicular dynamics in lactating dairy cows with ovarian follicular cysts. Biology of Reproduction 69:218-223. 2003.
Bogaki, M., W.J. Silvia, R. Rekawiecki, and J. Kotwica. 2002. Direct inhibitory effect of progesterone on oxytocin-induced secretion of prostaglandin F2a from bovine endometrial tissue. Biology of Reproduction 67:184-188.
Nugent, A.M., T.B. Hatler, and W.J. Silvia. 2002. The effect of intramammary infusion of Eschericia coli endotoxin on ovulation in lactating dairy cows. Reproductive Biology 2:295-309.
Silvia, W.J., R.W. Hemken, and T.B. Hatler. 2002. Timing of onset of somatotropin supplementation on reproductive performance in dairy cows. Journal of Dairy Science 85:384-389.
Washburn, S.P., W.J. Silvia, C.H. Brown, B.T. McDaniel, and A.J. McAllister. 2002. Trends in reproductive performance in southeastern Holstein and Jersey dairy herds. Journal of Dairy Science 85:244-251.
Silvia, W.J., T.B. Hatler, A.M. Nugent, and L.F. Laranja da Fonseca. Ovarian follicular cysts: An abnormality in folliculogenesis. Domestic Animal Endocrinology 23:167-177.
Hatler,T.B., A.M. Nugent, S.H. Hayes, D.W. Yelton and W.J. Silvia. 2003. The relationship between endogenous progesterone and follicular dynamics in lactating dairy cows with ovarian follicular cysts. Biol. Reprod. 69:218-223.
Nugent,A.M., T.B. Hatler and W.J. Silvia. 2002. The Effect of intramammary infusion of Eschericia coli endotoxin on ovulation in lactating dairy cows. Reprod. Biol. 2:295-309.
Bogaki, M., W.J. Silvia, R. Rekawiecki and J. Kotwica. 2002. Direct inhibitory effect of progesterone on oxytocin-induced secretion of prostaglandin F2a from bovine endometrial tissue. Biol. Reprod. 67:184-188.
Washburn,S.P., W.J. Silvia, C.H. Brown, B.T. McDaniel and A.J. McAllister. 2002. Trends in reproductive performance in southeastern Holstein and Jersey dairy herds. J. Dairy Sci. 85:244-251.
Silvia,W.J., R.W. Hemken and T.B. Hatler. 2002. Timing of onset of somatotropin supplementation on reproductive performance in dairy cows. J. Dairy Sci. 85:384-389.
Refereed Journal Articles
Hatler, T.B., S.H. Hayes, D.L. Ray, P.S. Reames and W.J. Silvia. 2007. Effect of subluteal concentrations ofprogesterone on luteinizing hormone and ovulation in lactating dairy cows. The Veterinary Journal (in press,doi:10.1016/j.tvjl.2007.06.003).Reames, P.S., T.B. Hatler, S.H. Hayes, D.L. Ray, and W.J. Silvia. 2011. Differential regulation of estrous behavior and luteinizing hormone secretion by estradiol-17b in ovariectomized dairy cows. Theriogenology 75:233-240.
Silvia, W.J., R.O. Peterson, W.F. Silvia, J.A. Vucetich and A.W. Silvia. 2011. The occurrence and morphology of a lateral metatarsal splint bone in moose (Alces alces). The Anatomical Record 294:231-235.
Reames, P.S., T.B. Hatler, S.H. Hayes, D.L. Ray, and W.J. Silvia. 2010. Differential regulation of estrous behavior and luteinizing hormone secretion by estradiol-17â in ovariectomized dairy cows. Theriogenology. http://dx.doi.org/10.1016/j.theriogenology.2010.08.009.
King, S.S., B.L. Douglas, J.F. Roser, W.J. Silvia, and K.L. Jones. 2010. Differential luteolytic function between the physiological breeding season, autumn transition and persistent winter cyclicity in the mare. Animal Reproduction Science 117:232-240.
Hatler, T.B., S.H. Hayes, D.L. Ray, P.S. Reames, and W.J. Silvia. Effect of subluteal concentrations of progesterone on luteinizing hormone and ovulation in lactating dairy cows. The Veterinary Journal 177: 360-368. 2008.
Hatler, T.B., S.H. Hayes, D.L. Ray, P.S. Reames and W.J. Silvia. 2007. Effect of subluteal concentrations ofprogesterone on luteinizing hormone and ovulation in lactating dairy cows. The Veterinary Journal (in press,doi:10.1016/j.tvjl.2007.06.003).
Silvia, W.J., A.S. McGinnis and T.B. Hatler. A comparison of adrenal gland function in lactating dairy cows with or without ovarian follicular cysts. Reproductive Biology 5:19-29. 2005.
Hatler, T.B., S.H. Hayes, L.H. Anderson and W.J. Silvia. Effect of a single injection of progesterone on ovarian follicular cysts in lactating dairy cows. The Veterinary Journal 170 (accessible online). 2005.
Abstracts
Pescatore, A., S. Burk, E. Vanzant, M. Rossano, W. Silvia and R. Harmon. 2011. The capstone course as a means of measuring assessment in an animal sciences program. NACTA Journal 55 (suppl.1): 80-81.
Smith WA, J.M. Bewley and W.J. Silvia. 2011. Evaluation of three-dimensional accelerometers to monitor motion changes relative to estrus behavior. J. Dairy Sci. 94 (suppl. 1): 62.
Smith, W.A., W.J. Silvia and J.W. Bewley. 2011. Potential for estrus detection in dairy cattle using reticular temperature monitors. J. Dairy Sci. 94 (suppl. 1): 184.
Reames, P., T.B. Hatler and W.J. Silvia. Behavioral and endocrine responses to estradiol-17b (E) in ovariectomized Holstein cows. Journal of Dairy Science 83 (suppl. 1):37. 2005.
Other Research Publications
Burk, S., M. Rossano, E. Vanzant, W. Silvia, and R. Harmon. 2011. Developing an assessment plan in an animal science department. Journal of Equine Veterinary Science 31: 347-348.
